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/* |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% % |
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% % |
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% % |
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% DDDD RRRR AAA W W % |
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% D D R R A A W W % |
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% D D RRRR AAAAA W W W % |
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% D D R RN A A WW WW % |
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% DDDD R R A A W W % |
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% % |
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% % |
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% MagickCore Image Drawing Methods % |
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% % |
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% % |
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% Software Design % |
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% Cristy % |
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% July 1998 % |
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% % |
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% % |
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% Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization % |
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% dedicated to making software imaging solutions freely available. % |
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% % |
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% You may not use this file except in compliance with the License. You may % |
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% obtain a copy of the License at % |
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% % |
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% http://www.imagemagick.org/script/license.php % |
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% % |
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% Unless required by applicable law or agreed to in writing, software % |
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% distributed under the License is distributed on an "AS IS" BASIS, % |
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
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% See the License for the specific language governing permissions and % |
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% limitations under the License. % |
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% % |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% |
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% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon |
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% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion", |
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% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent |
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% (www.appligent.com) contributed the dash pattern, linecap stroking |
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% algorithm, and minor rendering improvements. |
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% |
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*/ |
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/* |
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Include declarations. |
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*/ |
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#include "MagickCore/studio.h" |
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#include "MagickCore/annotate.h" |
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#include "MagickCore/artifact.h" |
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#include "MagickCore/blob.h" |
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#include "MagickCore/cache.h" |
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#include "MagickCore/cache-private.h" |
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#include "MagickCore/cache-view.h" |
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#include "MagickCore/channel.h" |
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#include "MagickCore/color.h" |
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#include "MagickCore/colorspace-private.h" |
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#include "MagickCore/composite.h" |
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#include "MagickCore/composite-private.h" |
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#include "MagickCore/constitute.h" |
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#include "MagickCore/draw.h" |
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#include "MagickCore/draw-private.h" |
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#include "MagickCore/enhance.h" |
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#include "MagickCore/exception.h" |
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#include "MagickCore/exception-private.h" |
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#include "MagickCore/gem.h" |
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#include "MagickCore/geometry.h" |
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#include "MagickCore/image-private.h" |
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#include "MagickCore/list.h" |
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#include "MagickCore/log.h" |
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#include "MagickCore/monitor.h" |
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#include "MagickCore/monitor-private.h" |
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#include "MagickCore/option.h" |
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#include "MagickCore/paint.h" |
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#include "MagickCore/pixel-accessor.h" |
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#include "MagickCore/pixel-private.h" |
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#include "MagickCore/property.h" |
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#include "MagickCore/resample.h" |
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#include "MagickCore/resample-private.h" |
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#include "MagickCore/resource_.h" |
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#include "MagickCore/string_.h" |
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#include "MagickCore/string-private.h" |
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#include "MagickCore/thread-private.h" |
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#include "MagickCore/token.h" |
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#include "MagickCore/transform-private.h" |
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#include "MagickCore/utility.h" |
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/* |
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Define declarations. |
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*/ |
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#define BezierQuantum 200 |
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#define DrawEpsilon (1.0e-10) |
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/* |
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Typedef declarations. |
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*/ |
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typedef struct _EdgeInfo |
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{ |
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SegmentInfo |
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bounds; |
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double |
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scanline; |
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PointInfo |
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*points; |
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size_t |
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number_points; |
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ssize_t |
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direction; |
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MagickBooleanType |
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ghostline; |
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size_t |
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highwater; |
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} EdgeInfo; |
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typedef struct _ElementInfo |
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{ |
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double |
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cx, |
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cy, |
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major, |
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minor, |
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angle; |
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} ElementInfo; |
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typedef struct _PolygonInfo |
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{ |
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EdgeInfo |
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*edges; |
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size_t |
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number_edges; |
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} PolygonInfo; |
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typedef enum |
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{ |
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MoveToCode, |
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OpenCode, |
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GhostlineCode, |
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LineToCode, |
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EndCode |
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} PathInfoCode; |
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typedef struct _PathInfo |
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{ |
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PointInfo |
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point; |
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PathInfoCode |
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code; |
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} PathInfo; |
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/* |
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Forward declarations. |
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*/ |
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static MagickBooleanType |
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DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *, |
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ExceptionInfo *); |
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static PrimitiveInfo |
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*TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *); |
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static size_t |
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TracePath(PrimitiveInfo *,const char *); |
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static void |
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TraceArc(PrimitiveInfo *,const PointInfo,const PointInfo,const PointInfo), |
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TraceArcPath(PrimitiveInfo *,const PointInfo,const PointInfo,const PointInfo, |
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const double,const MagickBooleanType,const MagickBooleanType), |
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TraceBezier(PrimitiveInfo *,const size_t), |
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TraceCircle(PrimitiveInfo *,const PointInfo,const PointInfo), |
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TraceEllipse(PrimitiveInfo *,const PointInfo,const PointInfo, |
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const PointInfo), |
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TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo), |
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TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo), |
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TraceRoundRectangle(PrimitiveInfo *,const PointInfo,const PointInfo, |
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PointInfo), |
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TraceSquareLinecap(PrimitiveInfo *,const size_t,const double); |
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/* |
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|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% % |
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% % |
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% % |
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|
% A c q u i r e D r a w I n f o % |
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% % |
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% % |
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% % |
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|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% |
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% AcquireDrawInfo() returns a DrawInfo structure properly initialized. |
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% |
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% The format of the AcquireDrawInfo method is: |
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% |
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% DrawInfo *AcquireDrawInfo(void) |
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% |
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*/ |
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|
MagickExport DrawInfo *AcquireDrawInfo(void) |
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|
{ |
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DrawInfo |
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|
*draw_info; |
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draw_info=(DrawInfo *) AcquireMagickMemory(sizeof(*draw_info)); |
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|
if (draw_info == (DrawInfo *) NULL) |
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|
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
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|
GetDrawInfo((ImageInfo *) NULL,draw_info); |
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return(draw_info); |
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|
} |
|
|
|
|
|
/* |
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|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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|
% % |
|
|
% % |
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|
% % |
|
|
% C l o n e D r a w I n f o % |
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|
% % |
|
|
% % |
|
|
% % |
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|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% |
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|
% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL |
|
|
% is specified, a new DrawInfo structure is created initialized to default |
|
|
% values. |
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|
% |
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|
% The format of the CloneDrawInfo method is: |
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% |
|
|
% DrawInfo *CloneDrawInfo(const ImageInfo *image_info, |
|
|
% const DrawInfo *draw_info) |
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|
% |
|
|
% A description of each parameter follows: |
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|
% |
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|
% o image_info: the image info. |
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|
% |
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|
% o draw_info: the draw info. |
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|
% |
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|
*/ |
|
|
MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info, |
|
|
const DrawInfo *draw_info) |
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|
{ |
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|
DrawInfo |
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|
*clone_info; |
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|
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ExceptionInfo |
|
|
*exception; |
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|
clone_info=(DrawInfo *) AcquireMagickMemory(sizeof(*clone_info)); |
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|
if (clone_info == (DrawInfo *) NULL) |
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|
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
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|
GetDrawInfo(image_info,clone_info); |
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|
if (draw_info == (DrawInfo *) NULL) |
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|
return(clone_info); |
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|
exception=AcquireExceptionInfo(); |
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|
if (clone_info->primitive != (char *) NULL) |
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|
(void) CloneString(&clone_info->primitive,draw_info->primitive); |
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|
if (draw_info->geometry != (char *) NULL) |
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|
(void) CloneString(&clone_info->geometry,draw_info->geometry); |
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|
clone_info->viewbox=draw_info->viewbox; |
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|
clone_info->affine=draw_info->affine; |
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|
clone_info->gravity=draw_info->gravity; |
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|
clone_info->fill=draw_info->fill; |
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|
clone_info->stroke=draw_info->stroke; |
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|
clone_info->stroke_width=draw_info->stroke_width; |
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|
if (draw_info->fill_pattern != (Image *) NULL) |
|
|
clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue, |
|
|
exception); |
|
|
if (draw_info->stroke_pattern != (Image *) NULL) |
|
|
clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0, |
|
|
MagickTrue,exception); |
|
|
clone_info->stroke_antialias=draw_info->stroke_antialias; |
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|
clone_info->text_antialias=draw_info->text_antialias; |
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|
clone_info->fill_rule=draw_info->fill_rule; |
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|
clone_info->linecap=draw_info->linecap; |
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|
clone_info->linejoin=draw_info->linejoin; |
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|
clone_info->miterlimit=draw_info->miterlimit; |
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|
clone_info->dash_offset=draw_info->dash_offset; |
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|
clone_info->decorate=draw_info->decorate; |
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|
clone_info->compose=draw_info->compose; |
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|
if (draw_info->text != (char *) NULL) |
|
|
(void) CloneString(&clone_info->text,draw_info->text); |
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|
if (draw_info->font != (char *) NULL) |
|
|
(void) CloneString(&clone_info->font,draw_info->font); |
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|
if (draw_info->metrics != (char *) NULL) |
|
|
(void) CloneString(&clone_info->metrics,draw_info->metrics); |
|
|
if (draw_info->family != (char *) NULL) |
|
|
(void) CloneString(&clone_info->family,draw_info->family); |
|
|
clone_info->style=draw_info->style; |
|
|
clone_info->stretch=draw_info->stretch; |
|
|
clone_info->weight=draw_info->weight; |
|
|
if (draw_info->encoding != (char *) NULL) |
|
|
(void) CloneString(&clone_info->encoding,draw_info->encoding); |
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|
clone_info->pointsize=draw_info->pointsize; |
|
|
clone_info->kerning=draw_info->kerning; |
|
|
clone_info->interline_spacing=draw_info->interline_spacing; |
|
|
clone_info->interword_spacing=draw_info->interword_spacing; |
|
|
clone_info->direction=draw_info->direction; |
|
|
if (draw_info->density != (char *) NULL) |
|
|
(void) CloneString(&clone_info->density,draw_info->density); |
|
|
clone_info->align=draw_info->align; |
|
|
clone_info->undercolor=draw_info->undercolor; |
|
|
clone_info->border_color=draw_info->border_color; |
|
|
if (draw_info->server_name != (char *) NULL) |
|
|
(void) CloneString(&clone_info->server_name,draw_info->server_name); |
|
|
if (draw_info->dash_pattern != (double *) NULL) |
|
|
{ |
|
|
register ssize_t |
|
|
x; |
|
|
|
|
|
for (x=0; fabs(draw_info->dash_pattern[x]) >= DrawEpsilon; x++) ; |
|
|
clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) x+1UL, |
|
|
sizeof(*clone_info->dash_pattern)); |
|
|
if (clone_info->dash_pattern == (double *) NULL) |
|
|
ThrowFatalException(ResourceLimitFatalError, |
|
|
"UnableToAllocateDashPattern"); |
|
|
(void) CopyMagickMemory(clone_info->dash_pattern,draw_info->dash_pattern, |
|
|
(size_t) (x+1)*sizeof(*clone_info->dash_pattern)); |
|
|
} |
|
|
clone_info->gradient=draw_info->gradient; |
|
|
if (draw_info->gradient.stops != (StopInfo *) NULL) |
|
|
{ |
|
|
size_t |
|
|
number_stops; |
|
|
|
|
|
number_stops=clone_info->gradient.number_stops; |
|
|
clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t) |
|
|
number_stops,sizeof(*clone_info->gradient.stops)); |
|
|
if (clone_info->gradient.stops == (StopInfo *) NULL) |
|
|
ThrowFatalException(ResourceLimitFatalError, |
|
|
"UnableToAllocateDashPattern"); |
|
|
(void) CopyMagickMemory(clone_info->gradient.stops, |
|
|
draw_info->gradient.stops,(size_t) number_stops* |
|
|
sizeof(*clone_info->gradient.stops)); |
|
|
} |
|
|
if (draw_info->clip_mask != (char *) NULL) |
|
|
(void) CloneString(&clone_info->clip_mask,draw_info->clip_mask); |
|
|
clone_info->bounds=draw_info->bounds; |
|
|
clone_info->clip_units=draw_info->clip_units; |
|
|
clone_info->render=draw_info->render; |
|
|
clone_info->fill_alpha=draw_info->fill_alpha; |
|
|
clone_info->stroke_alpha=draw_info->stroke_alpha; |
|
|
clone_info->element_reference=draw_info->element_reference; |
|
|
clone_info->debug=IsEventLogging(); |
|
|
exception=DestroyExceptionInfo(exception); |
|
|
return(clone_info); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ C o n v e r t P a t h T o P o l y g o n % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% ConvertPathToPolygon() converts a path to the more efficient sorted |
|
|
% rendering form. |
|
|
% |
|
|
% The format of the ConvertPathToPolygon method is: |
|
|
% |
|
|
% PolygonInfo *ConvertPathToPolygon(const DrawInfo *draw_info, |
|
|
% const PathInfo *path_info) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o Method ConvertPathToPolygon returns the path in a more efficient sorted |
|
|
% rendering form of type PolygonInfo. |
|
|
% |
|
|
% o draw_info: Specifies a pointer to an DrawInfo structure. |
|
|
% |
|
|
% o path_info: Specifies a pointer to an PathInfo structure. |
|
|
% |
|
|
% |
|
|
*/ |
|
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus) |
|
|
extern "C" { |
|
|
#endif |
|
|
|
|
|
static int CompareEdges(const void *x,const void *y) |
|
|
{ |
|
|
register const EdgeInfo |
|
|
*p, |
|
|
*q; |
|
|
|
|
|
/* |
|
|
Compare two edges. |
|
|
*/ |
|
|
p=(const EdgeInfo *) x; |
|
|
q=(const EdgeInfo *) y; |
|
|
if ((p->points[0].y-DrawEpsilon) > q->points[0].y) |
|
|
return(1); |
|
|
if ((p->points[0].y+DrawEpsilon) < q->points[0].y) |
|
|
return(-1); |
|
|
if ((p->points[0].x-DrawEpsilon) > q->points[0].x) |
|
|
return(1); |
|
|
if ((p->points[0].x+DrawEpsilon) < q->points[0].x) |
|
|
return(-1); |
|
|
if (((p->points[1].x-p->points[0].x)*(q->points[1].y-q->points[0].y)- |
|
|
(p->points[1].y-p->points[0].y)*(q->points[1].x-q->points[0].x)) > 0.0) |
|
|
return(1); |
|
|
return(-1); |
|
|
} |
|
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus) |
|
|
} |
|
|
#endif |
|
|
|
|
|
static void LogPolygonInfo(const PolygonInfo *polygon_info) |
|
|
{ |
|
|
register EdgeInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
j; |
|
|
|
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge"); |
|
|
p=polygon_info->edges; |
|
|
for (i=0; i < (ssize_t) polygon_info->number_edges; i++) |
|
|
{ |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:", |
|
|
(double) i); |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s", |
|
|
p->direction != MagickFalse ? "down" : "up"); |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s", |
|
|
p->ghostline != MagickFalse ? "transparent" : "opaque"); |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1, |
|
|
p->bounds.x2,p->bounds.y2); |
|
|
for (j=0; j < (ssize_t) p->number_points; j++) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g", |
|
|
p->points[j].x,p->points[j].y); |
|
|
p++; |
|
|
} |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge"); |
|
|
} |
|
|
|
|
|
static void ReversePoints(PointInfo *points,const size_t number_points) |
|
|
{ |
|
|
PointInfo |
|
|
point; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
for (i=0; i < (ssize_t) (number_points >> 1); i++) |
|
|
{ |
|
|
point=points[i]; |
|
|
points[i]=points[number_points-(i+1)]; |
|
|
points[number_points-(i+1)]=point; |
|
|
} |
|
|
} |
|
|
|
|
|
static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info) |
|
|
{ |
|
|
long |
|
|
direction, |
|
|
next_direction; |
|
|
|
|
|
PointInfo |
|
|
point, |
|
|
*points; |
|
|
|
|
|
PolygonInfo |
|
|
*polygon_info; |
|
|
|
|
|
SegmentInfo |
|
|
bounds; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
n; |
|
|
|
|
|
MagickBooleanType |
|
|
ghostline; |
|
|
|
|
|
size_t |
|
|
edge, |
|
|
number_edges, |
|
|
number_points; |
|
|
|
|
|
/* |
|
|
Convert a path to the more efficient sorted rendering form. |
|
|
*/ |
|
|
polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info)); |
|
|
if (polygon_info == (PolygonInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
number_edges=16; |
|
|
polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges, |
|
|
sizeof(*polygon_info->edges)); |
|
|
if (polygon_info->edges == (EdgeInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
(void) ResetMagickMemory(polygon_info->edges,0,number_edges* |
|
|
sizeof(*polygon_info->edges)); |
|
|
direction=0; |
|
|
edge=0; |
|
|
ghostline=MagickFalse; |
|
|
n=0; |
|
|
number_points=0; |
|
|
points=(PointInfo *) NULL; |
|
|
(void) ResetMagickMemory(&point,0,sizeof(point)); |
|
|
(void) ResetMagickMemory(&bounds,0,sizeof(bounds)); |
|
|
for (i=0; path_info[i].code != EndCode; i++) |
|
|
{ |
|
|
if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) || |
|
|
(path_info[i].code == GhostlineCode)) |
|
|
{ |
|
|
/* |
|
|
Move to. |
|
|
*/ |
|
|
if ((points != (PointInfo *) NULL) && (n >= 2)) |
|
|
{ |
|
|
if (edge == number_edges) |
|
|
{ |
|
|
number_edges<<=1; |
|
|
polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory( |
|
|
polygon_info->edges,(size_t) number_edges, |
|
|
sizeof(*polygon_info->edges)); |
|
|
if (polygon_info->edges == (EdgeInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
} |
|
|
polygon_info->edges[edge].number_points=(size_t) n; |
|
|
polygon_info->edges[edge].scanline=(-1.0); |
|
|
polygon_info->edges[edge].highwater=0; |
|
|
polygon_info->edges[edge].ghostline=ghostline; |
|
|
polygon_info->edges[edge].direction=(ssize_t) (direction > 0); |
|
|
if (direction < 0) |
|
|
ReversePoints(points,(size_t) n); |
|
|
polygon_info->edges[edge].points=points; |
|
|
polygon_info->edges[edge].bounds=bounds; |
|
|
polygon_info->edges[edge].bounds.y1=points[0].y; |
|
|
polygon_info->edges[edge].bounds.y2=points[n-1].y; |
|
|
points=(PointInfo *) NULL; |
|
|
ghostline=MagickFalse; |
|
|
edge++; |
|
|
} |
|
|
if (points == (PointInfo *) NULL) |
|
|
{ |
|
|
number_points=16; |
|
|
points=(PointInfo *) AcquireQuantumMemory((size_t) number_points, |
|
|
sizeof(*points)); |
|
|
if (points == (PointInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
} |
|
|
ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse; |
|
|
point=path_info[i].point; |
|
|
points[0]=point; |
|
|
bounds.x1=point.x; |
|
|
bounds.x2=point.x; |
|
|
direction=0; |
|
|
n=1; |
|
|
continue; |
|
|
} |
|
|
/* |
|
|
Line to. |
|
|
*/ |
|
|
next_direction=((path_info[i].point.y > point.y) || |
|
|
((fabs(path_info[i].point.y-point.y) < DrawEpsilon) && |
|
|
(path_info[i].point.x > point.x))) ? 1 : -1; |
|
|
if ((points != (PointInfo *) NULL) && (direction != 0) && |
|
|
(direction != next_direction)) |
|
|
{ |
|
|
/* |
|
|
New edge. |
|
|
*/ |
|
|
point=points[n-1]; |
|
|
if (edge == number_edges) |
|
|
{ |
|
|
number_edges<<=1; |
|
|
polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory( |
|
|
polygon_info->edges,(size_t) number_edges, |
|
|
sizeof(*polygon_info->edges)); |
|
|
if (polygon_info->edges == (EdgeInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
} |
|
|
polygon_info->edges[edge].number_points=(size_t) n; |
|
|
polygon_info->edges[edge].scanline=(-1.0); |
|
|
polygon_info->edges[edge].highwater=0; |
|
|
polygon_info->edges[edge].ghostline=ghostline; |
|
|
polygon_info->edges[edge].direction=(ssize_t) (direction > 0); |
|
|
if (direction < 0) |
|
|
ReversePoints(points,(size_t) n); |
|
|
polygon_info->edges[edge].points=points; |
|
|
polygon_info->edges[edge].bounds=bounds; |
|
|
polygon_info->edges[edge].bounds.y1=points[0].y; |
|
|
polygon_info->edges[edge].bounds.y2=points[n-1].y; |
|
|
number_points=16; |
|
|
points=(PointInfo *) AcquireQuantumMemory((size_t) number_points, |
|
|
sizeof(*points)); |
|
|
if (points == (PointInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
n=1; |
|
|
ghostline=MagickFalse; |
|
|
points[0]=point; |
|
|
bounds.x1=point.x; |
|
|
bounds.x2=point.x; |
|
|
edge++; |
|
|
} |
|
|
direction=next_direction; |
|
|
if (points == (PointInfo *) NULL) |
|
|
continue; |
|
|
if (n == (ssize_t) number_points) |
|
|
{ |
|
|
number_points<<=1; |
|
|
points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points, |
|
|
sizeof(*points)); |
|
|
if (points == (PointInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
} |
|
|
point=path_info[i].point; |
|
|
points[n]=point; |
|
|
if (point.x < bounds.x1) |
|
|
bounds.x1=point.x; |
|
|
if (point.x > bounds.x2) |
|
|
bounds.x2=point.x; |
|
|
n++; |
|
|
} |
|
|
if (points != (PointInfo *) NULL) |
|
|
{ |
|
|
if (n < 2) |
|
|
points=(PointInfo *) RelinquishMagickMemory(points); |
|
|
else |
|
|
{ |
|
|
if (edge == number_edges) |
|
|
{ |
|
|
number_edges<<=1; |
|
|
polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory( |
|
|
polygon_info->edges,(size_t) number_edges, |
|
|
sizeof(*polygon_info->edges)); |
|
|
if (polygon_info->edges == (EdgeInfo *) NULL) |
|
|
return((PolygonInfo *) NULL); |
|
|
} |
|
|
polygon_info->edges[edge].number_points=(size_t) n; |
|
|
polygon_info->edges[edge].scanline=(-1.0); |
|
|
polygon_info->edges[edge].highwater=0; |
|
|
polygon_info->edges[edge].ghostline=ghostline; |
|
|
polygon_info->edges[edge].direction=(ssize_t) (direction > 0); |
|
|
if (direction < 0) |
|
|
ReversePoints(points,(size_t) n); |
|
|
polygon_info->edges[edge].points=points; |
|
|
polygon_info->edges[edge].bounds=bounds; |
|
|
polygon_info->edges[edge].bounds.y1=points[0].y; |
|
|
polygon_info->edges[edge].bounds.y2=points[n-1].y; |
|
|
ghostline=MagickFalse; |
|
|
edge++; |
|
|
} |
|
|
} |
|
|
polygon_info->number_edges=edge; |
|
|
qsort(polygon_info->edges,(size_t) polygon_info->number_edges, |
|
|
sizeof(*polygon_info->edges),CompareEdges); |
|
|
if (IsEventLogging() != MagickFalse) |
|
|
LogPolygonInfo(polygon_info); |
|
|
return(polygon_info); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ C o n v e r t P r i m i t i v e T o P a t h % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector |
|
|
% path structure. |
|
|
% |
|
|
% The format of the ConvertPrimitiveToPath method is: |
|
|
% |
|
|
% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info, |
|
|
% const PrimitiveInfo *primitive_info) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o Method ConvertPrimitiveToPath returns a vector path structure of type |
|
|
% PathInfo. |
|
|
% |
|
|
% o draw_info: a structure of type DrawInfo. |
|
|
% |
|
|
% o primitive_info: Specifies a pointer to an PrimitiveInfo structure. |
|
|
% |
|
|
% |
|
|
*/ |
|
|
|
|
|
static void LogPathInfo(const PathInfo *path_info) |
|
|
{ |
|
|
register const PathInfo |
|
|
*p; |
|
|
|
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path"); |
|
|
for (p=path_info; p->code != EndCode; p++) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ? |
|
|
"moveto ghostline" : p->code == OpenCode ? "moveto open" : |
|
|
p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" : |
|
|
"?"); |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path"); |
|
|
} |
|
|
|
|
|
static PathInfo *ConvertPrimitiveToPath(const PrimitiveInfo *primitive_info) |
|
|
{ |
|
|
PathInfo |
|
|
*path_info; |
|
|
|
|
|
PathInfoCode |
|
|
code; |
|
|
|
|
|
PointInfo |
|
|
p, |
|
|
q; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
n; |
|
|
|
|
|
ssize_t |
|
|
coordinates, |
|
|
start; |
|
|
|
|
|
/* |
|
|
Converts a PrimitiveInfo structure into a vector path structure. |
|
|
*/ |
|
|
switch (primitive_info->primitive) |
|
|
{ |
|
|
case AlphaPrimitive: |
|
|
case ColorPrimitive: |
|
|
case ImagePrimitive: |
|
|
case PointPrimitive: |
|
|
case TextPrimitive: |
|
|
return((PathInfo *) NULL); |
|
|
default: |
|
|
break; |
|
|
} |
|
|
for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ; |
|
|
path_info=(PathInfo *) AcquireQuantumMemory((size_t) (2UL*i+3UL), |
|
|
sizeof(*path_info)); |
|
|
if (path_info == (PathInfo *) NULL) |
|
|
return((PathInfo *) NULL); |
|
|
coordinates=0; |
|
|
n=0; |
|
|
p.x=(-1.0); |
|
|
p.y=(-1.0); |
|
|
q.x=(-1.0); |
|
|
q.y=(-1.0); |
|
|
start=0; |
|
|
for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) |
|
|
{ |
|
|
code=LineToCode; |
|
|
if (coordinates <= 0) |
|
|
{ |
|
|
coordinates=(ssize_t) primitive_info[i].coordinates; |
|
|
p=primitive_info[i].point; |
|
|
start=n; |
|
|
code=MoveToCode; |
|
|
} |
|
|
coordinates--; |
|
|
/* |
|
|
Eliminate duplicate points. |
|
|
*/ |
|
|
if ((i == 0) || (fabs(q.x-primitive_info[i].point.x) >= DrawEpsilon) || |
|
|
(fabs(q.y-primitive_info[i].point.y) >= DrawEpsilon)) |
|
|
{ |
|
|
path_info[n].code=code; |
|
|
path_info[n].point=primitive_info[i].point; |
|
|
q=primitive_info[i].point; |
|
|
n++; |
|
|
} |
|
|
if (coordinates > 0) |
|
|
continue; |
|
|
if ((fabs(p.x-primitive_info[i].point.x) < DrawEpsilon) && |
|
|
(fabs(p.y-primitive_info[i].point.y) < DrawEpsilon)) |
|
|
continue; |
|
|
/* |
|
|
Mark the p point as open if it does not match the q. |
|
|
*/ |
|
|
path_info[start].code=OpenCode; |
|
|
path_info[n].code=GhostlineCode; |
|
|
path_info[n].point=primitive_info[i].point; |
|
|
n++; |
|
|
path_info[n].code=LineToCode; |
|
|
path_info[n].point=p; |
|
|
n++; |
|
|
} |
|
|
path_info[n].code=EndCode; |
|
|
path_info[n].point.x=0.0; |
|
|
path_info[n].point.y=0.0; |
|
|
if (IsEventLogging() != MagickFalse) |
|
|
LogPathInfo(path_info); |
|
|
return(path_info); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% D e s t r o y D r a w I n f o % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DestroyDrawInfo() deallocates memory associated with an DrawInfo |
|
|
% structure. |
|
|
% |
|
|
% The format of the DestroyDrawInfo method is: |
|
|
% |
|
|
% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
*/ |
|
|
MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info) |
|
|
{ |
|
|
if (draw_info->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
|
|
assert(draw_info != (DrawInfo *) NULL); |
|
|
assert(draw_info->signature == MagickCoreSignature); |
|
|
if (draw_info->primitive != (char *) NULL) |
|
|
draw_info->primitive=DestroyString(draw_info->primitive); |
|
|
if (draw_info->text != (char *) NULL) |
|
|
draw_info->text=DestroyString(draw_info->text); |
|
|
if (draw_info->geometry != (char *) NULL) |
|
|
draw_info->geometry=DestroyString(draw_info->geometry); |
|
|
if (draw_info->fill_pattern != (Image *) NULL) |
|
|
draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern); |
|
|
if (draw_info->stroke_pattern != (Image *) NULL) |
|
|
draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern); |
|
|
if (draw_info->font != (char *) NULL) |
|
|
draw_info->font=DestroyString(draw_info->font); |
|
|
if (draw_info->metrics != (char *) NULL) |
|
|
draw_info->metrics=DestroyString(draw_info->metrics); |
|
|
if (draw_info->family != (char *) NULL) |
|
|
draw_info->family=DestroyString(draw_info->family); |
|
|
if (draw_info->encoding != (char *) NULL) |
|
|
draw_info->encoding=DestroyString(draw_info->encoding); |
|
|
if (draw_info->density != (char *) NULL) |
|
|
draw_info->density=DestroyString(draw_info->density); |
|
|
if (draw_info->server_name != (char *) NULL) |
|
|
draw_info->server_name=(char *) |
|
|
RelinquishMagickMemory(draw_info->server_name); |
|
|
if (draw_info->dash_pattern != (double *) NULL) |
|
|
draw_info->dash_pattern=(double *) RelinquishMagickMemory( |
|
|
draw_info->dash_pattern); |
|
|
if (draw_info->gradient.stops != (StopInfo *) NULL) |
|
|
draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory( |
|
|
draw_info->gradient.stops); |
|
|
if (draw_info->clip_mask != (char *) NULL) |
|
|
draw_info->clip_mask=DestroyString(draw_info->clip_mask); |
|
|
draw_info->signature=(~MagickCoreSignature); |
|
|
draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info); |
|
|
return(draw_info); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ D e s t r o y E d g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DestroyEdge() destroys the specified polygon edge. |
|
|
% |
|
|
% The format of the DestroyEdge method is: |
|
|
% |
|
|
% ssize_t DestroyEdge(PolygonInfo *polygon_info,const int edge) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o polygon_info: Specifies a pointer to an PolygonInfo structure. |
|
|
% |
|
|
% o edge: the polygon edge number to destroy. |
|
|
% |
|
|
*/ |
|
|
static size_t DestroyEdge(PolygonInfo *polygon_info, |
|
|
const size_t edge) |
|
|
{ |
|
|
assert(edge < polygon_info->number_edges); |
|
|
polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory( |
|
|
polygon_info->edges[edge].points); |
|
|
polygon_info->number_edges--; |
|
|
if (edge < polygon_info->number_edges) |
|
|
(void) CopyMagickMemory(polygon_info->edges+edge,polygon_info->edges+edge+1, |
|
|
(size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges)); |
|
|
return(polygon_info->number_edges); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ D e s t r o y P o l y g o n I n f o % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DestroyPolygonInfo() destroys the PolygonInfo data structure. |
|
|
% |
|
|
% The format of the DestroyPolygonInfo method is: |
|
|
% |
|
|
% PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o polygon_info: Specifies a pointer to an PolygonInfo structure. |
|
|
% |
|
|
*/ |
|
|
static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info) |
|
|
{ |
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
for (i=0; i < (ssize_t) polygon_info->number_edges; i++) |
|
|
polygon_info->edges[i].points=(PointInfo *) |
|
|
RelinquishMagickMemory(polygon_info->edges[i].points); |
|
|
polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(polygon_info->edges); |
|
|
return((PolygonInfo *) RelinquishMagickMemory(polygon_info)); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% D r a w A f f i n e I m a g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawAffineImage() composites the source over the destination image as |
|
|
% dictated by the affine transform. |
|
|
% |
|
|
% The format of the DrawAffineImage method is: |
|
|
% |
|
|
% MagickBooleanType DrawAffineImage(Image *image,const Image *source, |
|
|
% const AffineMatrix *affine,ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o source: the source image. |
|
|
% |
|
|
% o affine: the affine transform. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
|
|
|
static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine, |
|
|
const double y,const SegmentInfo *edge) |
|
|
{ |
|
|
double |
|
|
intercept, |
|
|
z; |
|
|
|
|
|
register double |
|
|
x; |
|
|
|
|
|
SegmentInfo |
|
|
inverse_edge; |
|
|
|
|
|
/* |
|
|
Determine left and right edges. |
|
|
*/ |
|
|
inverse_edge.x1=edge->x1; |
|
|
inverse_edge.y1=edge->y1; |
|
|
inverse_edge.x2=edge->x2; |
|
|
inverse_edge.y2=edge->y2; |
|
|
z=affine->ry*y+affine->tx; |
|
|
if (affine->sx >= DrawEpsilon) |
|
|
{ |
|
|
intercept=(-z/affine->sx); |
|
|
x=intercept; |
|
|
if (x > inverse_edge.x1) |
|
|
inverse_edge.x1=x; |
|
|
intercept=(-z+(double) image->columns)/affine->sx; |
|
|
x=intercept; |
|
|
if (x < inverse_edge.x2) |
|
|
inverse_edge.x2=x; |
|
|
} |
|
|
else |
|
|
if (affine->sx < -DrawEpsilon) |
|
|
{ |
|
|
intercept=(-z+(double) image->columns)/affine->sx; |
|
|
x=intercept; |
|
|
if (x > inverse_edge.x1) |
|
|
inverse_edge.x1=x; |
|
|
intercept=(-z/affine->sx); |
|
|
x=intercept; |
|
|
if (x < inverse_edge.x2) |
|
|
inverse_edge.x2=x; |
|
|
} |
|
|
else |
|
|
if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns)) |
|
|
{ |
|
|
inverse_edge.x2=edge->x1; |
|
|
return(inverse_edge); |
|
|
} |
|
|
/* |
|
|
Determine top and bottom edges. |
|
|
*/ |
|
|
z=affine->sy*y+affine->ty; |
|
|
if (affine->rx >= DrawEpsilon) |
|
|
{ |
|
|
intercept=(-z/affine->rx); |
|
|
x=intercept; |
|
|
if (x > inverse_edge.x1) |
|
|
inverse_edge.x1=x; |
|
|
intercept=(-z+(double) image->rows)/affine->rx; |
|
|
x=intercept; |
|
|
if (x < inverse_edge.x2) |
|
|
inverse_edge.x2=x; |
|
|
} |
|
|
else |
|
|
if (affine->rx < -DrawEpsilon) |
|
|
{ |
|
|
intercept=(-z+(double) image->rows)/affine->rx; |
|
|
x=intercept; |
|
|
if (x > inverse_edge.x1) |
|
|
inverse_edge.x1=x; |
|
|
intercept=(-z/affine->rx); |
|
|
x=intercept; |
|
|
if (x < inverse_edge.x2) |
|
|
inverse_edge.x2=x; |
|
|
} |
|
|
else |
|
|
if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows)) |
|
|
{ |
|
|
inverse_edge.x2=edge->x2; |
|
|
return(inverse_edge); |
|
|
} |
|
|
return(inverse_edge); |
|
|
} |
|
|
|
|
|
static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine) |
|
|
{ |
|
|
AffineMatrix |
|
|
inverse_affine; |
|
|
|
|
|
double |
|
|
determinant; |
|
|
|
|
|
determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx* |
|
|
affine->ry); |
|
|
inverse_affine.sx=determinant*affine->sy; |
|
|
inverse_affine.rx=determinant*(-affine->rx); |
|
|
inverse_affine.ry=determinant*(-affine->ry); |
|
|
inverse_affine.sy=determinant*affine->sx; |
|
|
inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty* |
|
|
inverse_affine.ry; |
|
|
inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty* |
|
|
inverse_affine.sy; |
|
|
return(inverse_affine); |
|
|
} |
|
|
|
|
|
MagickExport MagickBooleanType DrawAffineImage(Image *image, |
|
|
const Image *source,const AffineMatrix *affine,ExceptionInfo *exception) |
|
|
{ |
|
|
AffineMatrix |
|
|
inverse_affine; |
|
|
|
|
|
CacheView |
|
|
*image_view, |
|
|
*source_view; |
|
|
|
|
|
MagickBooleanType |
|
|
status; |
|
|
|
|
|
PixelInfo |
|
|
zero; |
|
|
|
|
|
PointInfo |
|
|
extent[4], |
|
|
min, |
|
|
max; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
SegmentInfo |
|
|
edge; |
|
|
|
|
|
ssize_t |
|
|
start, |
|
|
stop, |
|
|
y; |
|
|
|
|
|
/* |
|
|
Determine bounding box. |
|
|
*/ |
|
|
assert(image != (Image *) NULL); |
|
|
assert(image->signature == MagickCoreSignature); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
|
|
assert(source != (const Image *) NULL); |
|
|
assert(source->signature == MagickCoreSignature); |
|
|
assert(affine != (AffineMatrix *) NULL); |
|
|
extent[0].x=0.0; |
|
|
extent[0].y=0.0; |
|
|
extent[1].x=(double) source->columns-1.0; |
|
|
extent[1].y=0.0; |
|
|
extent[2].x=(double) source->columns-1.0; |
|
|
extent[2].y=(double) source->rows-1.0; |
|
|
extent[3].x=0.0; |
|
|
extent[3].y=(double) source->rows-1.0; |
|
|
for (i=0; i < 4; i++) |
|
|
{ |
|
|
PointInfo |
|
|
point; |
|
|
|
|
|
point=extent[i]; |
|
|
extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx; |
|
|
extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty; |
|
|
} |
|
|
min=extent[0]; |
|
|
max=extent[0]; |
|
|
for (i=1; i < 4; i++) |
|
|
{ |
|
|
if (min.x > extent[i].x) |
|
|
min.x=extent[i].x; |
|
|
if (min.y > extent[i].y) |
|
|
min.y=extent[i].y; |
|
|
if (max.x < extent[i].x) |
|
|
max.x=extent[i].x; |
|
|
if (max.y < extent[i].y) |
|
|
max.y=extent[i].y; |
|
|
} |
|
|
/* |
|
|
Affine transform image. |
|
|
*/ |
|
|
if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse) |
|
|
return(MagickFalse); |
|
|
status=MagickTrue; |
|
|
edge.x1=MagickMax(min.x,0.0); |
|
|
edge.y1=MagickMax(min.y,0.0); |
|
|
edge.x2=MagickMin(max.x,(double) image->columns-1.0); |
|
|
edge.y2=MagickMin(max.y,(double) image->rows-1.0); |
|
|
inverse_affine=InverseAffineMatrix(affine); |
|
|
GetPixelInfo(image,&zero); |
|
|
start=(ssize_t) ceil(edge.y1-0.5); |
|
|
stop=(ssize_t) floor(edge.y2+0.5); |
|
|
source_view=AcquireVirtualCacheView(source,exception); |
|
|
image_view=AcquireAuthenticCacheView(image,exception); |
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT) |
|
|
#pragma omp parallel for schedule(static,4) shared(status) \ |
|
|
magick_threads(source,image,1,1) |
|
|
#endif |
|
|
for (y=start; y <= stop; y++) |
|
|
{ |
|
|
PixelInfo |
|
|
composite, |
|
|
pixel; |
|
|
|
|
|
PointInfo |
|
|
point; |
|
|
|
|
|
register ssize_t |
|
|
x; |
|
|
|
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
SegmentInfo |
|
|
inverse_edge; |
|
|
|
|
|
ssize_t |
|
|
x_offset; |
|
|
|
|
|
inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge); |
|
|
if (inverse_edge.x2 < inverse_edge.x1) |
|
|
continue; |
|
|
q=GetCacheViewAuthenticPixels(image_view,(ssize_t) ceil(inverse_edge.x1- |
|
|
0.5),y,(size_t) (floor(inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1), |
|
|
1,exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
continue; |
|
|
pixel=zero; |
|
|
composite=zero; |
|
|
x_offset=0; |
|
|
for (x=(ssize_t) ceil(inverse_edge.x1-0.5); x <= (ssize_t) floor(inverse_edge.x2+0.5); x++) |
|
|
{ |
|
|
point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+ |
|
|
inverse_affine.tx; |
|
|
point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+ |
|
|
inverse_affine.ty; |
|
|
(void) InterpolatePixelInfo(source,source_view,UndefinedInterpolatePixel, |
|
|
point.x,point.y,&pixel,exception); |
|
|
GetPixelInfoPixel(image,q,&composite); |
|
|
CompositePixelInfoOver(&pixel,pixel.alpha,&composite,composite.alpha, |
|
|
&composite); |
|
|
SetPixelViaPixelInfo(image,&composite,q); |
|
|
x_offset++; |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
|
|
status=MagickFalse; |
|
|
} |
|
|
source_view=DestroyCacheView(source_view); |
|
|
image_view=DestroyCacheView(image_view); |
|
|
return(status); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ D r a w B o u n d i n g R e c t a n g l e s % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawBoundingRectangles() draws the bounding rectangles on the image. This |
|
|
% is only useful for developers debugging the rendering algorithm. |
|
|
% |
|
|
% The format of the DrawBoundingRectangles method is: |
|
|
% |
|
|
% void DrawBoundingRectangles(Image *image,const DrawInfo *draw_info, |
|
|
% PolygonInfo *polygon_info,ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o polygon_info: Specifies a pointer to a PolygonInfo structure. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
static void DrawBoundingRectangles(Image *image,const DrawInfo *draw_info, |
|
|
const PolygonInfo *polygon_info,ExceptionInfo *exception) |
|
|
{ |
|
|
DrawInfo |
|
|
*clone_info; |
|
|
|
|
|
double |
|
|
mid; |
|
|
|
|
|
PointInfo |
|
|
end, |
|
|
resolution, |
|
|
start; |
|
|
|
|
|
PrimitiveInfo |
|
|
primitive_info[6]; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
SegmentInfo |
|
|
bounds; |
|
|
|
|
|
ssize_t |
|
|
coordinates; |
|
|
|
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
(void) QueryColorCompliance("#0000",AllCompliance,&clone_info->fill, |
|
|
exception); |
|
|
resolution.x=DefaultResolution; |
|
|
resolution.y=DefaultResolution; |
|
|
if (clone_info->density != (char *) NULL) |
|
|
{ |
|
|
GeometryInfo |
|
|
geometry_info; |
|
|
|
|
|
MagickStatusType |
|
|
flags; |
|
|
|
|
|
flags=ParseGeometry(clone_info->density,&geometry_info); |
|
|
resolution.x=geometry_info.rho; |
|
|
resolution.y=geometry_info.sigma; |
|
|
if ((flags & SigmaValue) == MagickFalse) |
|
|
resolution.y=resolution.x; |
|
|
} |
|
|
mid=(resolution.x/72.0)*ExpandAffine(&clone_info->affine)* |
|
|
clone_info->stroke_width/2.0; |
|
|
bounds.x1=0.0; |
|
|
bounds.y1=0.0; |
|
|
bounds.x2=0.0; |
|
|
bounds.y2=0.0; |
|
|
if (polygon_info != (PolygonInfo *) NULL) |
|
|
{ |
|
|
bounds=polygon_info->edges[0].bounds; |
|
|
for (i=1; i < (ssize_t) polygon_info->number_edges; i++) |
|
|
{ |
|
|
if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1) |
|
|
bounds.x1=polygon_info->edges[i].bounds.x1; |
|
|
if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1) |
|
|
bounds.y1=polygon_info->edges[i].bounds.y1; |
|
|
if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2) |
|
|
bounds.x2=polygon_info->edges[i].bounds.x2; |
|
|
if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2) |
|
|
bounds.y2=polygon_info->edges[i].bounds.y2; |
|
|
} |
|
|
bounds.x1-=mid; |
|
|
bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) |
|
|
image->columns ? (double) image->columns-1 : bounds.x1; |
|
|
bounds.y1-=mid; |
|
|
bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) |
|
|
image->rows ? (double) image->rows-1 : bounds.y1; |
|
|
bounds.x2+=mid; |
|
|
bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) |
|
|
image->columns ? (double) image->columns-1 : bounds.x2; |
|
|
bounds.y2+=mid; |
|
|
bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) |
|
|
image->rows ? (double) image->rows-1 : bounds.y2; |
|
|
for (i=0; i < (ssize_t) polygon_info->number_edges; i++) |
|
|
{ |
|
|
if (polygon_info->edges[i].direction != 0) |
|
|
(void) QueryColorCompliance("red",AllCompliance,&clone_info->stroke, |
|
|
exception); |
|
|
else |
|
|
(void) QueryColorCompliance("green",AllCompliance,&clone_info->stroke, |
|
|
exception); |
|
|
start.x=(double) (polygon_info->edges[i].bounds.x1-mid); |
|
|
start.y=(double) (polygon_info->edges[i].bounds.y1-mid); |
|
|
end.x=(double) (polygon_info->edges[i].bounds.x2+mid); |
|
|
end.y=(double) (polygon_info->edges[i].bounds.y2+mid); |
|
|
primitive_info[0].primitive=RectanglePrimitive; |
|
|
TraceRectangle(primitive_info,start,end); |
|
|
primitive_info[0].method=ReplaceMethod; |
|
|
coordinates=(ssize_t) primitive_info[0].coordinates; |
|
|
primitive_info[coordinates].primitive=UndefinedPrimitive; |
|
|
(void) DrawPrimitive(image,clone_info,primitive_info,exception); |
|
|
} |
|
|
} |
|
|
(void) QueryColorCompliance("blue",AllCompliance,&clone_info->stroke, |
|
|
exception); |
|
|
start.x=(double) (bounds.x1-mid); |
|
|
start.y=(double) (bounds.y1-mid); |
|
|
end.x=(double) (bounds.x2+mid); |
|
|
end.y=(double) (bounds.y2+mid); |
|
|
primitive_info[0].primitive=RectanglePrimitive; |
|
|
TraceRectangle(primitive_info,start,end); |
|
|
primitive_info[0].method=ReplaceMethod; |
|
|
coordinates=(ssize_t) primitive_info[0].coordinates; |
|
|
primitive_info[coordinates].primitive=UndefinedPrimitive; |
|
|
(void) DrawPrimitive(image,clone_info,primitive_info,exception); |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% D r a w C l i p P a t h % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawClipPath() draws the clip path on the image mask. |
|
|
% |
|
|
% The format of the DrawClipPath method is: |
|
|
% |
|
|
% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info, |
|
|
% const char *name,ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o name: the name of the clip path. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
MagickExport MagickBooleanType DrawClipPath(Image *image, |
|
|
const DrawInfo *draw_info,const char *name,ExceptionInfo *exception) |
|
|
{ |
|
|
char |
|
|
filename[MagickPathExtent]; |
|
|
|
|
|
Image |
|
|
*clip_mask; |
|
|
|
|
|
const char |
|
|
*value; |
|
|
|
|
|
DrawInfo |
|
|
*clone_info; |
|
|
|
|
|
MagickStatusType |
|
|
status; |
|
|
|
|
|
assert(image != (Image *) NULL); |
|
|
assert(image->signature == MagickCoreSignature); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
|
|
assert(draw_info != (const DrawInfo *) NULL); |
|
|
(void) FormatLocaleString(filename,MagickPathExtent,"%s",name); |
|
|
value=GetImageArtifact(image,filename); |
|
|
if (value == (const char *) NULL) |
|
|
return(MagickFalse); |
|
|
clip_mask=CloneImage(image,image->columns,image->rows,MagickTrue,exception); |
|
|
if (clip_mask == (Image *) NULL) |
|
|
return(MagickFalse); |
|
|
(void) QueryColorCompliance("#0000",AllCompliance, |
|
|
&clip_mask->background_color,exception); |
|
|
clip_mask->background_color.alpha=(MagickRealType) TransparentAlpha; |
|
|
(void) SetImageBackgroundColor(clip_mask,exception); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s", |
|
|
draw_info->clip_mask); |
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
(void) CloneString(&clone_info->primitive,value); |
|
|
(void) QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill, |
|
|
exception); |
|
|
clone_info->clip_mask=(char *) NULL; |
|
|
status=NegateImage(clip_mask,MagickFalse,exception); |
|
|
(void) SetImageMask(image,ReadPixelMask,clip_mask,exception); |
|
|
clip_mask=DestroyImage(clip_mask); |
|
|
status&=DrawImage(image,clone_info,exception); |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path"); |
|
|
return(status != 0 ? MagickTrue : MagickFalse); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ D r a w D a s h P o l y g o n % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the |
|
|
% image while respecting the dash offset and dash pattern attributes. |
|
|
% |
|
|
% The format of the DrawDashPolygon method is: |
|
|
% |
|
|
% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info, |
|
|
% const PrimitiveInfo *primitive_info,Image *image, |
|
|
% ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o primitive_info: Specifies a pointer to a PrimitiveInfo structure. |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info, |
|
|
const PrimitiveInfo *primitive_info,Image *image,ExceptionInfo *exception) |
|
|
{ |
|
|
DrawInfo |
|
|
*clone_info; |
|
|
|
|
|
double |
|
|
length, |
|
|
maximum_length, |
|
|
offset, |
|
|
scale, |
|
|
total_length; |
|
|
|
|
|
MagickStatusType |
|
|
status; |
|
|
|
|
|
PrimitiveInfo |
|
|
*dash_polygon; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
register double |
|
|
dx, |
|
|
dy; |
|
|
|
|
|
size_t |
|
|
number_vertices; |
|
|
|
|
|
ssize_t |
|
|
j, |
|
|
n; |
|
|
|
|
|
assert(draw_info != (const DrawInfo *) NULL); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash"); |
|
|
for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ; |
|
|
number_vertices=(size_t) i; |
|
|
dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t) |
|
|
(2UL*number_vertices+1UL),sizeof(*dash_polygon)); |
|
|
if (dash_polygon == (PrimitiveInfo *) NULL) |
|
|
return(MagickFalse); |
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
clone_info->miterlimit=0; |
|
|
dash_polygon[0]=primitive_info[0]; |
|
|
scale=ExpandAffine(&draw_info->affine); |
|
|
length=scale*(draw_info->dash_pattern[0]-0.5); |
|
|
offset=fabs(draw_info->dash_offset) >= DrawEpsilon ? |
|
|
scale*draw_info->dash_offset : 0.0; |
|
|
j=1; |
|
|
for (n=0; offset > 0.0; j=0) |
|
|
{ |
|
|
if (draw_info->dash_pattern[n] <= 0.0) |
|
|
break; |
|
|
length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5)); |
|
|
if (offset > length) |
|
|
{ |
|
|
offset-=length; |
|
|
n++; |
|
|
length=scale*(draw_info->dash_pattern[n]+0.5); |
|
|
continue; |
|
|
} |
|
|
if (offset < length) |
|
|
{ |
|
|
length-=offset; |
|
|
offset=0.0; |
|
|
break; |
|
|
} |
|
|
offset=0.0; |
|
|
n++; |
|
|
} |
|
|
status=MagickTrue; |
|
|
maximum_length=0.0; |
|
|
total_length=0.0; |
|
|
for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++) |
|
|
{ |
|
|
dx=primitive_info[i].point.x-primitive_info[i-1].point.x; |
|
|
dy=primitive_info[i].point.y-primitive_info[i-1].point.y; |
|
|
maximum_length=hypot((double) dx,dy); |
|
|
if (fabs(length) < DrawEpsilon) |
|
|
{ |
|
|
n++; |
|
|
if (fabs(draw_info->dash_pattern[n]) < DrawEpsilon) |
|
|
n=0; |
|
|
length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5)); |
|
|
} |
|
|
for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); ) |
|
|
{ |
|
|
total_length+=length; |
|
|
if ((n & 0x01) != 0) |
|
|
{ |
|
|
dash_polygon[0]=primitive_info[0]; |
|
|
dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx* |
|
|
total_length/maximum_length); |
|
|
dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy* |
|
|
total_length/maximum_length); |
|
|
j=1; |
|
|
} |
|
|
else |
|
|
{ |
|
|
if ((j+1) > (ssize_t) (2*number_vertices)) |
|
|
break; |
|
|
dash_polygon[j]=primitive_info[i-1]; |
|
|
dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx* |
|
|
total_length/maximum_length); |
|
|
dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy* |
|
|
total_length/maximum_length); |
|
|
dash_polygon[j].coordinates=1; |
|
|
j++; |
|
|
dash_polygon[0].coordinates=(size_t) j; |
|
|
dash_polygon[j].primitive=UndefinedPrimitive; |
|
|
status&=DrawStrokePolygon(image,clone_info,dash_polygon,exception); |
|
|
} |
|
|
n++; |
|
|
if (fabs(draw_info->dash_pattern[n]) < DrawEpsilon) |
|
|
n=0; |
|
|
length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5)); |
|
|
} |
|
|
length-=(maximum_length-total_length); |
|
|
if ((n & 0x01) != 0) |
|
|
continue; |
|
|
dash_polygon[j]=primitive_info[i]; |
|
|
dash_polygon[j].coordinates=1; |
|
|
j++; |
|
|
} |
|
|
if ((total_length <= maximum_length) && ((n & 0x01) == 0) && (j > 1)) |
|
|
{ |
|
|
dash_polygon[j]=primitive_info[i-1]; |
|
|
dash_polygon[j].point.x+=DrawEpsilon; |
|
|
dash_polygon[j].point.y+=DrawEpsilon; |
|
|
dash_polygon[j].coordinates=1; |
|
|
j++; |
|
|
dash_polygon[0].coordinates=(size_t) j; |
|
|
dash_polygon[j].primitive=UndefinedPrimitive; |
|
|
status&=DrawStrokePolygon(image,clone_info,dash_polygon,exception); |
|
|
} |
|
|
dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon); |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash"); |
|
|
return(status != 0 ? MagickTrue : MagickFalse); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% D r a w I m a g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawImage() draws a graphic primitive on your image. The primitive |
|
|
% may be represented as a string or filename. Precede the filename with an |
|
|
% "at" sign (@) and the contents of the file are drawn on the image. You |
|
|
% can affect how text is drawn by setting one or more members of the draw |
|
|
% info structure. |
|
|
% |
|
|
% The format of the DrawImage method is: |
|
|
% |
|
|
% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info, |
|
|
% ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
|
|
|
static inline MagickBooleanType IsPoint(const char *point) |
|
|
{ |
|
|
char |
|
|
*p; |
|
|
|
|
|
double |
|
|
value; |
|
|
|
|
|
value=StringToDouble(point,&p); |
|
|
return((fabs(value) < DrawEpsilon) && (p == point) ? MagickFalse : MagickTrue); |
|
|
} |
|
|
|
|
|
static inline void TracePoint(PrimitiveInfo *primitive_info, |
|
|
const PointInfo point) |
|
|
{ |
|
|
primitive_info->coordinates=1; |
|
|
primitive_info->point=point; |
|
|
} |
|
|
|
|
|
MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info, |
|
|
ExceptionInfo *exception) |
|
|
{ |
|
|
#define RenderImageTag "Render/Image" |
|
|
|
|
|
AffineMatrix |
|
|
affine, |
|
|
current; |
|
|
|
|
|
char |
|
|
keyword[MagickPathExtent], |
|
|
geometry[MagickPathExtent], |
|
|
*next_token, |
|
|
pattern[MagickPathExtent], |
|
|
*primitive, |
|
|
*token; |
|
|
|
|
|
const char |
|
|
*q; |
|
|
|
|
|
DrawInfo |
|
|
**graphic_context; |
|
|
|
|
|
MagickBooleanType |
|
|
proceed; |
|
|
|
|
|
MagickSizeType |
|
|
length, |
|
|
number_points; |
|
|
|
|
|
MagickStatusType |
|
|
status; |
|
|
|
|
|
double |
|
|
angle, |
|
|
factor, |
|
|
primitive_extent; |
|
|
|
|
|
PointInfo |
|
|
point; |
|
|
|
|
|
PrimitiveInfo |
|
|
*primitive_info; |
|
|
|
|
|
PrimitiveType |
|
|
primitive_type; |
|
|
|
|
|
register const char |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
x; |
|
|
|
|
|
SegmentInfo |
|
|
bounds; |
|
|
|
|
|
size_t |
|
|
extent, |
|
|
number_stops; |
|
|
|
|
|
ssize_t |
|
|
j, |
|
|
k, |
|
|
n; |
|
|
|
|
|
StopInfo |
|
|
*stops; |
|
|
|
|
|
/* |
|
|
Ensure the annotation info is valid. |
|
|
*/ |
|
|
assert(image != (Image *) NULL); |
|
|
assert(image->signature == MagickCoreSignature); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
|
|
assert(draw_info != (DrawInfo *) NULL); |
|
|
assert(draw_info->signature == MagickCoreSignature); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
|
|
if ((draw_info->primitive == (char *) NULL) || |
|
|
(*draw_info->primitive == '\0')) |
|
|
return(MagickFalse); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image"); |
|
|
if (*draw_info->primitive != '@') |
|
|
primitive=AcquireString(draw_info->primitive); |
|
|
else |
|
|
primitive=FileToString(draw_info->primitive+1,~0UL,exception); |
|
|
if (primitive == (char *) NULL) |
|
|
return(MagickFalse); |
|
|
primitive_extent=(double) strlen(primitive); |
|
|
(void) SetImageArtifact(image,"MVG",primitive); |
|
|
n=0; |
|
|
number_stops=0; |
|
|
stops=(StopInfo *) NULL; |
|
|
/* |
|
|
Allocate primitive info memory. |
|
|
*/ |
|
|
graphic_context=(DrawInfo **) AcquireMagickMemory( |
|
|
sizeof(*graphic_context)); |
|
|
if (graphic_context == (DrawInfo **) NULL) |
|
|
{ |
|
|
primitive=DestroyString(primitive); |
|
|
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed", |
|
|
image->filename); |
|
|
} |
|
|
number_points=6553; |
|
|
primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t) number_points, |
|
|
sizeof(*primitive_info)); |
|
|
if (primitive_info == (PrimitiveInfo *) NULL) |
|
|
{ |
|
|
primitive=DestroyString(primitive); |
|
|
for ( ; n >= 0; n--) |
|
|
graphic_context[n]=DestroyDrawInfo(graphic_context[n]); |
|
|
graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context); |
|
|
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed", |
|
|
image->filename); |
|
|
} |
|
|
graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
graphic_context[n]->viewbox=image->page; |
|
|
if ((image->page.width == 0) || (image->page.height == 0)) |
|
|
{ |
|
|
graphic_context[n]->viewbox.width=image->columns; |
|
|
graphic_context[n]->viewbox.height=image->rows; |
|
|
} |
|
|
token=AcquireString(primitive); |
|
|
extent=strlen(token)+MagickPathExtent; |
|
|
if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse) |
|
|
return(MagickFalse); |
|
|
status=MagickTrue; |
|
|
for (q=primitive; *q != '\0'; ) |
|
|
{ |
|
|
/* |
|
|
Interpret graphic primitive. |
|
|
*/ |
|
|
GetNextToken(q,&q,MagickPathExtent,keyword); |
|
|
if (*keyword == '\0') |
|
|
break; |
|
|
if (*keyword == '#') |
|
|
{ |
|
|
/* |
|
|
Comment. |
|
|
*/ |
|
|
while ((*q != '\n') && (*q != '\0')) |
|
|
q++; |
|
|
continue; |
|
|
} |
|
|
p=q-strlen(keyword)-1; |
|
|
primitive_type=UndefinedPrimitive; |
|
|
current=graphic_context[n]->affine; |
|
|
GetAffineMatrix(&affine); |
|
|
switch (*keyword) |
|
|
{ |
|
|
case ';': |
|
|
break; |
|
|
case 'a': |
|
|
case 'A': |
|
|
{ |
|
|
if (LocaleCompare("affine",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.sx=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.rx=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.ry=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.sy=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.tx=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.ty=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("alpha",keyword) == 0) |
|
|
{ |
|
|
primitive_type=AlphaPrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("arc",keyword) == 0) |
|
|
{ |
|
|
primitive_type=ArcPrimitive; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'b': |
|
|
case 'B': |
|
|
{ |
|
|
if (LocaleCompare("bezier",keyword) == 0) |
|
|
{ |
|
|
primitive_type=BezierPrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("border-color",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) QueryColorCompliance(token,AllCompliance, |
|
|
&graphic_context[n]->border_color,exception); |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'c': |
|
|
case 'C': |
|
|
{ |
|
|
if (LocaleCompare("clip-path",keyword) == 0) |
|
|
{ |
|
|
/* |
|
|
Create clip mask. |
|
|
*/ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CloneString(&graphic_context[n]->clip_mask,token); |
|
|
(void) DrawClipPath(image,graphic_context[n], |
|
|
graphic_context[n]->clip_mask,exception); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("clip-rule",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
fill_rule; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse, |
|
|
token); |
|
|
if (fill_rule == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->fill_rule=(FillRule) fill_rule; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("clip-units",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
clip_units; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse, |
|
|
token); |
|
|
if (clip_units == -1) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
graphic_context[n]->clip_units=(ClipPathUnits) clip_units; |
|
|
if (clip_units == ObjectBoundingBox) |
|
|
{ |
|
|
GetAffineMatrix(¤t); |
|
|
affine.sx=draw_info->bounds.x2; |
|
|
affine.sy=draw_info->bounds.y2; |
|
|
affine.tx=draw_info->bounds.x1; |
|
|
affine.ty=draw_info->bounds.y1; |
|
|
break; |
|
|
} |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("circle",keyword) == 0) |
|
|
{ |
|
|
primitive_type=CirclePrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("color",keyword) == 0) |
|
|
{ |
|
|
primitive_type=ColorPrimitive; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'd': |
|
|
case 'D': |
|
|
{ |
|
|
if (LocaleCompare("decorate",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
decorate; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse, |
|
|
token); |
|
|
if (decorate == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->decorate=(DecorationType) decorate; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("density",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CloneString(&graphic_context[n]->density,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("direction",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
direction; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
direction=ParseCommandOption(MagickDirectionOptions,MagickFalse, |
|
|
token); |
|
|
if (direction == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->direction=(DirectionType) direction; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'e': |
|
|
case 'E': |
|
|
{ |
|
|
if (LocaleCompare("ellipse",keyword) == 0) |
|
|
{ |
|
|
primitive_type=EllipsePrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("encoding",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CloneString(&graphic_context[n]->encoding,token); |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'f': |
|
|
case 'F': |
|
|
{ |
|
|
if (LocaleCompare("fill",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) FormatLocaleString(pattern,MagickPathExtent,"%s",token); |
|
|
if (GetImageArtifact(image,pattern) != (const char *) NULL) |
|
|
(void) DrawPatternPath(image,draw_info,token, |
|
|
&graphic_context[n]->fill_pattern,exception); |
|
|
else |
|
|
{ |
|
|
status&=QueryColorCompliance(token,AllCompliance, |
|
|
&graphic_context[n]->fill,exception); |
|
|
if (graphic_context[n]->fill_alpha != OpaqueAlpha) |
|
|
graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha; |
|
|
if (status == MagickFalse) |
|
|
{ |
|
|
ImageInfo |
|
|
*pattern_info; |
|
|
|
|
|
pattern_info=AcquireImageInfo(); |
|
|
(void) CopyMagickString(pattern_info->filename,token, |
|
|
MagickPathExtent); |
|
|
graphic_context[n]->fill_pattern=ReadImage(pattern_info, |
|
|
exception); |
|
|
CatchException(exception); |
|
|
pattern_info=DestroyImageInfo(pattern_info); |
|
|
} |
|
|
} |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("fill-opacity",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0; |
|
|
graphic_context[n]->fill_alpha=(double) QuantumRange*(1.0-factor* |
|
|
StringToDouble(token,&next_token)); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("fill-rule",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
fill_rule; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse, |
|
|
token); |
|
|
if (fill_rule == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->fill_rule=(FillRule) fill_rule; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("font",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CloneString(&graphic_context[n]->font,token); |
|
|
if (LocaleCompare("none",token) == 0) |
|
|
graphic_context[n]->font=(char *) RelinquishMagickMemory( |
|
|
graphic_context[n]->font); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("font-family",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CloneString(&graphic_context[n]->family,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("font-size",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->pointsize=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("font-stretch",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
stretch; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token); |
|
|
if (stretch == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->stretch=(StretchType) stretch; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("font-style",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
style; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
style=ParseCommandOption(MagickStyleOptions,MagickFalse,token); |
|
|
if (style == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->style=(StyleType) style; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("font-weight",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
weight; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token); |
|
|
if (weight == -1) |
|
|
weight=(ssize_t) StringToUnsignedLong(token); |
|
|
graphic_context[n]->weight=(size_t) weight; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'g': |
|
|
case 'G': |
|
|
{ |
|
|
if (LocaleCompare("gradient-units",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("gravity",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
gravity; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token); |
|
|
if (gravity == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->gravity=(GravityType) gravity; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'i': |
|
|
case 'I': |
|
|
{ |
|
|
if (LocaleCompare("image",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
compose; |
|
|
|
|
|
primitive_type=ImagePrimitive; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token); |
|
|
if (compose == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->compose=(CompositeOperator) compose; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("interline-spacing",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->interline_spacing=StringToDouble(token, |
|
|
&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("interword-spacing",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->interword_spacing=StringToDouble(token, |
|
|
&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'k': |
|
|
case 'K': |
|
|
{ |
|
|
if (LocaleCompare("kerning",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->kerning=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'l': |
|
|
case 'L': |
|
|
{ |
|
|
if (LocaleCompare("line",keyword) == 0) |
|
|
primitive_type=LinePrimitive; |
|
|
else |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'o': |
|
|
case 'O': |
|
|
{ |
|
|
if (LocaleCompare("offset",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("opacity",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0; |
|
|
graphic_context[n]->fill_alpha=QuantumRange*(1.0-(QuantumScale* |
|
|
graphic_context[n]->fill_alpha*(1.0-factor*StringToDouble(token, |
|
|
&next_token)))); |
|
|
graphic_context[n]->stroke_alpha=QuantumRange*(1.0-(QuantumScale* |
|
|
graphic_context[n]->stroke_alpha*(1.0-factor*StringToDouble(token, |
|
|
&next_token)))); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'p': |
|
|
case 'P': |
|
|
{ |
|
|
if (LocaleCompare("path",keyword) == 0) |
|
|
{ |
|
|
primitive_type=PathPrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("point",keyword) == 0) |
|
|
{ |
|
|
primitive_type=PointPrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("polyline",keyword) == 0) |
|
|
{ |
|
|
primitive_type=PolylinePrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("polygon",keyword) == 0) |
|
|
{ |
|
|
primitive_type=PolygonPrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("pop",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (LocaleCompare("clip-path",token) == 0) |
|
|
break; |
|
|
if (LocaleCompare("defs",token) == 0) |
|
|
break; |
|
|
if (LocaleCompare("gradient",token) == 0) |
|
|
break; |
|
|
if (LocaleCompare("graphic-context",token) == 0) |
|
|
{ |
|
|
if (n <= 0) |
|
|
{ |
|
|
(void) ThrowMagickException(exception,GetMagickModule(), |
|
|
DrawError,"UnbalancedGraphicContextPushPop","`%s'",token); |
|
|
status=MagickFalse; |
|
|
n=0; |
|
|
break; |
|
|
} |
|
|
if (graphic_context[n]->clip_mask != (char *) NULL) |
|
|
if (LocaleCompare(graphic_context[n]->clip_mask, |
|
|
graphic_context[n-1]->clip_mask) != 0) |
|
|
(void) SetImageMask(image,ReadPixelMask,(Image *) NULL, |
|
|
exception); |
|
|
graphic_context[n]=DestroyDrawInfo(graphic_context[n]); |
|
|
n--; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("pattern",token) == 0) |
|
|
break; |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("push",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (LocaleCompare("clip-path",token) == 0) |
|
|
{ |
|
|
char |
|
|
name[MagickPathExtent]; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) FormatLocaleString(name,MagickPathExtent,"%s",token); |
|
|
for (p=q; *q != '\0'; ) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (LocaleCompare(token,"pop") != 0) |
|
|
continue; |
|
|
GetNextToken(q,(const char **) NULL,extent,token); |
|
|
if (LocaleCompare(token,"clip-path") != 0) |
|
|
continue; |
|
|
break; |
|
|
} |
|
|
(void) CopyMagickString(token,p,(size_t) (q-p-4+1)); |
|
|
(void) SetImageArtifact(image,name,token); |
|
|
GetNextToken(q,&q,extent,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("gradient",token) == 0) |
|
|
{ |
|
|
char |
|
|
key[2*MagickPathExtent], |
|
|
name[MagickPathExtent], |
|
|
type[MagickPathExtent]; |
|
|
|
|
|
SegmentInfo |
|
|
segment; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CopyMagickString(name,token,MagickPathExtent); |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CopyMagickString(type,token,MagickPathExtent); |
|
|
GetNextToken(q,&q,extent,token); |
|
|
segment.x1=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
segment.y1=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
segment.x2=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
segment.y2=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
if (LocaleCompare(type,"radial") == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
} |
|
|
for (p=q; *q != '\0'; ) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (LocaleCompare(token,"pop") != 0) |
|
|
continue; |
|
|
GetNextToken(q,(const char **) NULL,extent,token); |
|
|
if (LocaleCompare(token,"gradient") != 0) |
|
|
continue; |
|
|
break; |
|
|
} |
|
|
(void) CopyMagickString(token,p,(size_t) (q-p-4+1)); |
|
|
bounds.x1=graphic_context[n]->affine.sx*segment.x1+ |
|
|
graphic_context[n]->affine.ry*segment.y1+ |
|
|
graphic_context[n]->affine.tx; |
|
|
bounds.y1=graphic_context[n]->affine.rx*segment.x1+ |
|
|
graphic_context[n]->affine.sy*segment.y1+ |
|
|
graphic_context[n]->affine.ty; |
|
|
bounds.x2=graphic_context[n]->affine.sx*segment.x2+ |
|
|
graphic_context[n]->affine.ry*segment.y2+ |
|
|
graphic_context[n]->affine.tx; |
|
|
bounds.y2=graphic_context[n]->affine.rx*segment.x2+ |
|
|
graphic_context[n]->affine.sy*segment.y2+ |
|
|
graphic_context[n]->affine.ty; |
|
|
(void) FormatLocaleString(key,MagickPathExtent,"%s",name); |
|
|
(void) SetImageArtifact(image,key,token); |
|
|
(void) FormatLocaleString(key,MagickPathExtent,"%s-type",name); |
|
|
(void) SetImageArtifact(image,key,type); |
|
|
(void) FormatLocaleString(key,MagickPathExtent,"%s-geometry", |
|
|
name); |
|
|
(void) FormatLocaleString(geometry,MagickPathExtent, |
|
|
"%gx%g%+.15g%+.15g", |
|
|
MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0), |
|
|
MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0), |
|
|
bounds.x1,bounds.y1); |
|
|
(void) SetImageArtifact(image,key,geometry); |
|
|
GetNextToken(q,&q,extent,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("pattern",token) == 0) |
|
|
{ |
|
|
char |
|
|
key[2*MagickPathExtent], |
|
|
name[MagickPathExtent]; |
|
|
|
|
|
RectangleInfo |
|
|
pattern_bounds; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) CopyMagickString(name,token,MagickPathExtent); |
|
|
GetNextToken(q,&q,extent,token); |
|
|
pattern_bounds.x=(ssize_t) ceil(StringToDouble(token, |
|
|
&next_token)-0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
pattern_bounds.y=(ssize_t) ceil(StringToDouble(token, |
|
|
&next_token)-0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
pattern_bounds.width=(size_t) floor(StringToDouble(token, |
|
|
&next_token)+0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
pattern_bounds.height=(size_t) floor(StringToDouble(token, |
|
|
&next_token)+0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
for (p=q; *q != '\0'; ) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (LocaleCompare(token,"pop") != 0) |
|
|
continue; |
|
|
GetNextToken(q,(const char **) NULL,extent,token); |
|
|
if (LocaleCompare(token,"pattern") != 0) |
|
|
continue; |
|
|
break; |
|
|
} |
|
|
(void) CopyMagickString(token,p,(size_t) (q-p-4+1)); |
|
|
(void) FormatLocaleString(key,MagickPathExtent,"%s",name); |
|
|
(void) SetImageArtifact(image,key,token); |
|
|
(void) FormatLocaleString(key,MagickPathExtent,"%s-geometry", |
|
|
name); |
|
|
(void) FormatLocaleString(geometry,MagickPathExtent, |
|
|
"%.20gx%.20g%+.20g%+.20g",(double)pattern_bounds.width, |
|
|
(double)pattern_bounds.height,(double)pattern_bounds.x, |
|
|
(double)pattern_bounds.y); |
|
|
(void) SetImageArtifact(image,key,geometry); |
|
|
GetNextToken(q,&q,extent,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("graphic-context",token) == 0) |
|
|
{ |
|
|
n++; |
|
|
graphic_context=(DrawInfo **) ResizeQuantumMemory( |
|
|
graphic_context,(size_t) (n+1),sizeof(*graphic_context)); |
|
|
if (graphic_context == (DrawInfo **) NULL) |
|
|
{ |
|
|
(void) ThrowMagickException(exception,GetMagickModule(), |
|
|
ResourceLimitError,"MemoryAllocationFailed","`%s'", |
|
|
image->filename); |
|
|
break; |
|
|
} |
|
|
graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL, |
|
|
graphic_context[n-1]); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("defs",token) == 0) |
|
|
break; |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'r': |
|
|
case 'R': |
|
|
{ |
|
|
if (LocaleCompare("rectangle",keyword) == 0) |
|
|
{ |
|
|
primitive_type=RectanglePrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("rotate",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
angle=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0))); |
|
|
affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0))); |
|
|
affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0)))); |
|
|
affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0))); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("roundRectangle",keyword) == 0) |
|
|
{ |
|
|
primitive_type=RoundRectanglePrimitive; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 's': |
|
|
case 'S': |
|
|
{ |
|
|
if (LocaleCompare("scale",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.sx=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.sy=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("skewX",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
angle=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
affine.ry=sin(DegreesToRadians(angle)); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("skewY",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
angle=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
affine.rx=(-tan(DegreesToRadians(angle)/2.0)); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stop-color",keyword) == 0) |
|
|
{ |
|
|
PixelInfo |
|
|
stop_color; |
|
|
|
|
|
number_stops++; |
|
|
if (number_stops == 1) |
|
|
stops=(StopInfo *) AcquireQuantumMemory(2,sizeof(*stops)); |
|
|
else if (number_stops > 2) |
|
|
stops=(StopInfo *) ResizeQuantumMemory(stops,number_stops, |
|
|
sizeof(*stops)); |
|
|
if (stops == (StopInfo *) NULL) |
|
|
{ |
|
|
(void) ThrowMagickException(exception,GetMagickModule(), |
|
|
ResourceLimitError,"MemoryAllocationFailed","`%s'", |
|
|
image->filename); |
|
|
break; |
|
|
} |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) QueryColorCompliance(token,AllCompliance,&stop_color, |
|
|
exception); |
|
|
stops[number_stops-1].color=stop_color; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
stops[number_stops-1].offset=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) FormatLocaleString(pattern,MagickPathExtent,"%s",token); |
|
|
if (GetImageArtifact(image,pattern) != (const char *) NULL) |
|
|
(void) DrawPatternPath(image,draw_info,token, |
|
|
&graphic_context[n]->stroke_pattern,exception); |
|
|
else |
|
|
{ |
|
|
status&=QueryColorCompliance(token,AllCompliance, |
|
|
&graphic_context[n]->stroke,exception); |
|
|
if (graphic_context[n]->stroke_alpha != OpaqueAlpha) |
|
|
graphic_context[n]->stroke.alpha= |
|
|
graphic_context[n]->stroke_alpha; |
|
|
if (status == MagickFalse) |
|
|
{ |
|
|
ImageInfo |
|
|
*pattern_info; |
|
|
|
|
|
pattern_info=AcquireImageInfo(); |
|
|
(void) CopyMagickString(pattern_info->filename,token, |
|
|
MagickPathExtent); |
|
|
graphic_context[n]->stroke_pattern=ReadImage(pattern_info, |
|
|
exception); |
|
|
CatchException(exception); |
|
|
pattern_info=DestroyImageInfo(pattern_info); |
|
|
} |
|
|
} |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-antialias",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->stroke_antialias= |
|
|
StringToLong(token) != 0 ? MagickTrue : MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-dasharray",keyword) == 0) |
|
|
{ |
|
|
if (graphic_context[n]->dash_pattern != (double *) NULL) |
|
|
graphic_context[n]->dash_pattern=(double *) |
|
|
RelinquishMagickMemory(graphic_context[n]->dash_pattern); |
|
|
if (IsPoint(q) != MagickFalse) |
|
|
{ |
|
|
const char |
|
|
*r; |
|
|
|
|
|
r=q; |
|
|
GetNextToken(r,&r,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(r,&r,extent,token); |
|
|
for (x=0; IsPoint(token) != MagickFalse; x++) |
|
|
{ |
|
|
GetNextToken(r,&r,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(r,&r,extent,token); |
|
|
} |
|
|
graphic_context[n]->dash_pattern=(double *) |
|
|
AcquireQuantumMemory((size_t) (2UL*x+1UL), |
|
|
sizeof(*graphic_context[n]->dash_pattern)); |
|
|
if (graphic_context[n]->dash_pattern == (double *) NULL) |
|
|
{ |
|
|
(void) ThrowMagickException(exception,GetMagickModule(), |
|
|
ResourceLimitError,"MemoryAllocationFailed","`%s'", |
|
|
image->filename); |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
for (j=0; j < x; j++) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->dash_pattern[j]=StringToDouble(token, |
|
|
&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
if (graphic_context[n]->dash_pattern[j] < 0.0) |
|
|
status=MagickFalse; |
|
|
} |
|
|
if ((x & 0x01) != 0) |
|
|
for ( ; j < (2*x); j++) |
|
|
graphic_context[n]->dash_pattern[j]= |
|
|
graphic_context[n]->dash_pattern[j-x]; |
|
|
graphic_context[n]->dash_pattern[j]=0.0; |
|
|
break; |
|
|
} |
|
|
GetNextToken(q,&q,extent,token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-dashoffset",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->dash_offset=StringToDouble(token, |
|
|
&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-linecap",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
linecap; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token); |
|
|
if (linecap == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->linecap=(LineCap) linecap; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-linejoin",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
linejoin; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse, |
|
|
token); |
|
|
if (linejoin == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->linejoin=(LineJoin) linejoin; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-miterlimit",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->miterlimit=StringToUnsignedLong(token); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-opacity",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0; |
|
|
graphic_context[n]->stroke_alpha=(double) QuantumRange*(1.0-factor* |
|
|
StringToDouble(token,&next_token)); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("stroke-width",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->stroke_width=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 't': |
|
|
case 'T': |
|
|
{ |
|
|
if (LocaleCompare("text",keyword) == 0) |
|
|
{ |
|
|
primitive_type=TextPrimitive; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("text-align",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
align; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
align=ParseCommandOption(MagickAlignOptions,MagickFalse,token); |
|
|
if (align == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->align=(AlignType) align; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("text-anchor",keyword) == 0) |
|
|
{ |
|
|
ssize_t |
|
|
align; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
align=ParseCommandOption(MagickAlignOptions,MagickFalse,token); |
|
|
if (align == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
graphic_context[n]->align=(AlignType) align; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("text-antialias",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->text_antialias=StringToLong(token) != 0 ? |
|
|
MagickTrue : MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("text-undercolor",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
(void) QueryColorCompliance(token,AllCompliance, |
|
|
&graphic_context[n]->undercolor,exception); |
|
|
break; |
|
|
} |
|
|
if (LocaleCompare("translate",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.tx=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
affine.ty=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
case 'v': |
|
|
case 'V': |
|
|
{ |
|
|
if (LocaleCompare("viewbox",keyword) == 0) |
|
|
{ |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->viewbox.x=(ssize_t) ceil(StringToDouble(token, |
|
|
&next_token)-0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->viewbox.y=(ssize_t) ceil(StringToDouble(token, |
|
|
&next_token)-0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->viewbox.width=(size_t) floor(StringToDouble( |
|
|
token,&next_token)+0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
graphic_context[n]->viewbox.height=(size_t) floor(StringToDouble( |
|
|
token,&next_token)+0.5); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
default: |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
} |
|
|
if (status == MagickFalse) |
|
|
break; |
|
|
if ((fabs(affine.sx-1.0) >= DrawEpsilon) || |
|
|
(fabs(affine.rx) >= DrawEpsilon) || (fabs(affine.ry) >= DrawEpsilon) || |
|
|
(fabs(affine.sy-1.0) >= DrawEpsilon) || |
|
|
(fabs(affine.tx) >= DrawEpsilon) || (fabs(affine.ty) >= DrawEpsilon)) |
|
|
{ |
|
|
graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx; |
|
|
graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx; |
|
|
graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy; |
|
|
graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy; |
|
|
graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+ |
|
|
current.tx; |
|
|
graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+ |
|
|
current.ty; |
|
|
} |
|
|
if (primitive_type == UndefinedPrimitive) |
|
|
{ |
|
|
if (*q == '\0') |
|
|
{ |
|
|
if (number_stops > 1) |
|
|
{ |
|
|
GradientType |
|
|
type; |
|
|
|
|
|
type=LinearGradient; |
|
|
if (draw_info->gradient.type == RadialGradient) |
|
|
type=RadialGradient; |
|
|
(void) GradientImage(image,type,PadSpread,stops,number_stops, |
|
|
exception); |
|
|
} |
|
|
if (number_stops > 0) |
|
|
stops=(StopInfo *) RelinquishMagickMemory(stops); |
|
|
} |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) |
|
|
(q-p),p); |
|
|
continue; |
|
|
} |
|
|
/* |
|
|
Parse the primitive attributes. |
|
|
*/ |
|
|
i=0; |
|
|
j=0; |
|
|
primitive_info[0].point.x=0.0; |
|
|
primitive_info[0].point.y=0.0; |
|
|
for (x=0; *q != '\0'; x++) |
|
|
{ |
|
|
/* |
|
|
Define points. |
|
|
*/ |
|
|
if (IsPoint(q) == MagickFalse) |
|
|
break; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
point.x=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,&q,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
point.y=StringToDouble(token,&next_token); |
|
|
if (token == next_token) |
|
|
status=MagickFalse; |
|
|
GetNextToken(q,(const char **) NULL,extent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
primitive_info[i].primitive=primitive_type; |
|
|
primitive_info[i].point=point; |
|
|
primitive_info[i].coordinates=0; |
|
|
primitive_info[i].method=FloodfillMethod; |
|
|
i++; |
|
|
if (i < (ssize_t) number_points) |
|
|
continue; |
|
|
number_points<<=1; |
|
|
primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(primitive_info, |
|
|
(size_t) number_points,sizeof(*primitive_info)); |
|
|
if ((primitive_info == (PrimitiveInfo *) NULL) || |
|
|
(number_points != (MagickSizeType) ((size_t) number_points))) |
|
|
{ |
|
|
(void) ThrowMagickException(exception,GetMagickModule(), |
|
|
ResourceLimitError,"MemoryAllocationFailed","`%s'",image->filename); |
|
|
break; |
|
|
} |
|
|
} |
|
|
primitive_info[j].primitive=primitive_type; |
|
|
primitive_info[j].coordinates=(size_t) x; |
|
|
primitive_info[j].method=FloodfillMethod; |
|
|
primitive_info[j].text=(char *) NULL; |
|
|
/* |
|
|
Circumscribe primitive within a circle. |
|
|
*/ |
|
|
bounds.x1=primitive_info[j].point.x; |
|
|
bounds.y1=primitive_info[j].point.y; |
|
|
bounds.x2=primitive_info[j].point.x; |
|
|
bounds.y2=primitive_info[j].point.y; |
|
|
for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++) |
|
|
{ |
|
|
point=primitive_info[j+k].point; |
|
|
if (point.x < bounds.x1) |
|
|
bounds.x1=point.x; |
|
|
if (point.y < bounds.y1) |
|
|
bounds.y1=point.y; |
|
|
if (point.x > bounds.x2) |
|
|
bounds.x2=point.x; |
|
|
if (point.y > bounds.y2) |
|
|
bounds.y2=point.y; |
|
|
} |
|
|
/* |
|
|
Speculate how many points our primitive might consume. |
|
|
*/ |
|
|
length=primitive_info[j].coordinates; |
|
|
switch (primitive_type) |
|
|
{ |
|
|
case RectanglePrimitive: |
|
|
{ |
|
|
length*=5; |
|
|
break; |
|
|
} |
|
|
case RoundRectanglePrimitive: |
|
|
{ |
|
|
double |
|
|
alpha, |
|
|
beta, |
|
|
radius; |
|
|
|
|
|
alpha=bounds.x2-bounds.x1; |
|
|
beta=bounds.y2-bounds.y1; |
|
|
radius=hypot((double) alpha,(double) beta); |
|
|
length*=5; |
|
|
length+=2*((size_t) ceil((double) MagickPI*radius))+6*BezierQuantum+360; |
|
|
break; |
|
|
} |
|
|
case BezierPrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates > 107) |
|
|
(void) ThrowMagickException(exception,GetMagickModule(),DrawError, |
|
|
"TooManyBezierCoordinates","`%s'",token); |
|
|
length=BezierQuantum*primitive_info[j].coordinates; |
|
|
break; |
|
|
} |
|
|
case PathPrimitive: |
|
|
{ |
|
|
char |
|
|
*s, |
|
|
*t; |
|
|
|
|
|
GetNextToken(q,&q,extent,token); |
|
|
length=1; |
|
|
t=token; |
|
|
for (s=token; *s != '\0'; s=t) |
|
|
{ |
|
|
double |
|
|
value; |
|
|
|
|
|
value=StringToDouble(s,&t); |
|
|
(void) value; |
|
|
if (s == t) |
|
|
{ |
|
|
t++; |
|
|
continue; |
|
|
} |
|
|
length++; |
|
|
} |
|
|
length=length*BezierQuantum/2; |
|
|
break; |
|
|
} |
|
|
case CirclePrimitive: |
|
|
case ArcPrimitive: |
|
|
case EllipsePrimitive: |
|
|
{ |
|
|
double |
|
|
alpha, |
|
|
beta, |
|
|
radius; |
|
|
|
|
|
alpha=bounds.x2-bounds.x1; |
|
|
beta=bounds.y2-bounds.y1; |
|
|
radius=hypot((double) alpha,(double) beta); |
|
|
length=2*((size_t) ceil((double) MagickPI*radius))+6*BezierQuantum+360; |
|
|
break; |
|
|
} |
|
|
default: |
|
|
break; |
|
|
} |
|
|
if ((i+length) >= number_points) |
|
|
{ |
|
|
/* |
|
|
Resize based on speculative points required by primitive. |
|
|
*/ |
|
|
number_points+=length+1; |
|
|
primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(primitive_info, |
|
|
(size_t) number_points,sizeof(*primitive_info)); |
|
|
if ((primitive_info == (PrimitiveInfo *) NULL) || |
|
|
(number_points != (MagickSizeType) ((size_t) number_points))) |
|
|
{ |
|
|
(void) ThrowMagickException(exception,GetMagickModule(), |
|
|
ResourceLimitError,"MemoryAllocationFailed","`%s'", |
|
|
image->filename); |
|
|
break; |
|
|
} |
|
|
} |
|
|
switch (primitive_type) |
|
|
{ |
|
|
case PointPrimitive: |
|
|
default: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 1) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
TracePoint(primitive_info+j,primitive_info[j].point); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case LinePrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 2) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
TraceLine(primitive_info+j,primitive_info[j].point, |
|
|
primitive_info[j+1].point); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case RectanglePrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 2) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
TraceRectangle(primitive_info+j,primitive_info[j].point, |
|
|
primitive_info[j+1].point); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case RoundRectanglePrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 3) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
TraceRoundRectangle(primitive_info+j,primitive_info[j].point, |
|
|
primitive_info[j+1].point,primitive_info[j+2].point); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case ArcPrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 3) |
|
|
{ |
|
|
primitive_type=UndefinedPrimitive; |
|
|
break; |
|
|
} |
|
|
TraceArc(primitive_info+j,primitive_info[j].point, |
|
|
primitive_info[j+1].point,primitive_info[j+2].point); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case EllipsePrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 3) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
TraceEllipse(primitive_info+j,primitive_info[j].point, |
|
|
primitive_info[j+1].point,primitive_info[j+2].point); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case CirclePrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 2) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
TraceCircle(primitive_info+j,primitive_info[j].point, |
|
|
primitive_info[j+1].point); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case PolylinePrimitive: |
|
|
break; |
|
|
case PolygonPrimitive: |
|
|
{ |
|
|
primitive_info[i]=primitive_info[j]; |
|
|
primitive_info[i].coordinates=0; |
|
|
primitive_info[j].coordinates++; |
|
|
i++; |
|
|
break; |
|
|
} |
|
|
case BezierPrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates < 3) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
TraceBezier(primitive_info+j,primitive_info[j].coordinates); |
|
|
i=(ssize_t) (j+primitive_info[j].coordinates); |
|
|
break; |
|
|
} |
|
|
case PathPrimitive: |
|
|
{ |
|
|
i=(ssize_t) (j+TracePath(primitive_info+j,token)); |
|
|
break; |
|
|
} |
|
|
case AlphaPrimitive: |
|
|
case ColorPrimitive: |
|
|
{ |
|
|
ssize_t |
|
|
method; |
|
|
|
|
|
if (primitive_info[j].coordinates != 1) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
GetNextToken(q,&q,extent,token); |
|
|
method=ParseCommandOption(MagickMethodOptions,MagickFalse,token); |
|
|
if (method == -1) |
|
|
status=MagickFalse; |
|
|
else |
|
|
primitive_info[j].method=(PaintMethod) method; |
|
|
break; |
|
|
} |
|
|
case TextPrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 1) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
if (*token != ',') |
|
|
GetNextToken(q,&q,extent,token); |
|
|
primitive_info[j].text=AcquireString(token); |
|
|
break; |
|
|
} |
|
|
case ImagePrimitive: |
|
|
{ |
|
|
if (primitive_info[j].coordinates != 2) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
break; |
|
|
} |
|
|
GetNextToken(q,&q,extent,token); |
|
|
primitive_info[j].text=AcquireString(token); |
|
|
break; |
|
|
} |
|
|
} |
|
|
if (primitive_info == (PrimitiveInfo *) NULL) |
|
|
break; |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p); |
|
|
if (status == MagickFalse) |
|
|
break; |
|
|
primitive_info[i].primitive=UndefinedPrimitive; |
|
|
if (i == 0) |
|
|
continue; |
|
|
/* |
|
|
Transform points. |
|
|
*/ |
|
|
for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) |
|
|
{ |
|
|
point=primitive_info[i].point; |
|
|
primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+ |
|
|
graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx; |
|
|
primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+ |
|
|
graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty; |
|
|
point=primitive_info[i].point; |
|
|
if (point.x < graphic_context[n]->bounds.x1) |
|
|
graphic_context[n]->bounds.x1=point.x; |
|
|
if (point.y < graphic_context[n]->bounds.y1) |
|
|
graphic_context[n]->bounds.y1=point.y; |
|
|
if (point.x > graphic_context[n]->bounds.x2) |
|
|
graphic_context[n]->bounds.x2=point.x; |
|
|
if (point.y > graphic_context[n]->bounds.y2) |
|
|
graphic_context[n]->bounds.y2=point.y; |
|
|
if (primitive_info[i].primitive == ImagePrimitive) |
|
|
break; |
|
|
if (i >= (ssize_t) number_points) |
|
|
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
|
|
} |
|
|
if (graphic_context[n]->render != MagickFalse) |
|
|
{ |
|
|
if ((n != 0) && (graphic_context[n]->clip_mask != (char *) NULL) && |
|
|
(LocaleCompare(graphic_context[n]->clip_mask, |
|
|
graphic_context[n-1]->clip_mask) != 0)) |
|
|
status&=DrawClipPath(image,graphic_context[n], |
|
|
graphic_context[n]->clip_mask,exception); |
|
|
status&=DrawPrimitive(image,graphic_context[n],primitive_info, |
|
|
exception); |
|
|
} |
|
|
if (primitive_info->text != (char *) NULL) |
|
|
primitive_info->text=(char *) RelinquishMagickMemory( |
|
|
primitive_info->text); |
|
|
proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType) |
|
|
primitive_extent); |
|
|
if (proceed == MagickFalse) |
|
|
break; |
|
|
if (status == 0) |
|
|
break; |
|
|
} |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image"); |
|
|
/* |
|
|
Relinquish resources. |
|
|
*/ |
|
|
token=DestroyString(token); |
|
|
if (primitive_info != (PrimitiveInfo *) NULL) |
|
|
primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info); |
|
|
primitive=DestroyString(primitive); |
|
|
for ( ; n >= 0; n--) |
|
|
graphic_context[n]=DestroyDrawInfo(graphic_context[n]); |
|
|
graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context); |
|
|
if (status == MagickFalse) |
|
|
ThrowBinaryException(DrawError,"NonconformingDrawingPrimitiveDefinition", |
|
|
keyword); |
|
|
return(status != 0 ? MagickTrue : MagickFalse); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% D r a w G r a d i e n t I m a g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawGradientImage() draws a linear gradient on the image. |
|
|
% |
|
|
% The format of the DrawGradientImage method is: |
|
|
% |
|
|
% MagickBooleanType DrawGradientImage(Image *image, |
|
|
% const DrawInfo *draw_info,ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
|
|
|
static inline double GetStopColorOffset(const GradientInfo *gradient, |
|
|
const ssize_t x,const ssize_t y) |
|
|
{ |
|
|
switch (gradient->type) |
|
|
{ |
|
|
case UndefinedGradient: |
|
|
case LinearGradient: |
|
|
{ |
|
|
double |
|
|
gamma, |
|
|
length, |
|
|
offset, |
|
|
scale; |
|
|
|
|
|
PointInfo |
|
|
p, |
|
|
q; |
|
|
|
|
|
const SegmentInfo |
|
|
*gradient_vector; |
|
|
|
|
|
gradient_vector=(&gradient->gradient_vector); |
|
|
p.x=gradient_vector->x2-gradient_vector->x1; |
|
|
p.y=gradient_vector->y2-gradient_vector->y1; |
|
|
q.x=(double) x-gradient_vector->x1; |
|
|
q.y=(double) y-gradient_vector->y1; |
|
|
length=sqrt(q.x*q.x+q.y*q.y); |
|
|
gamma=sqrt(p.x*p.x+p.y*p.y)*length; |
|
|
gamma=PerceptibleReciprocal(gamma); |
|
|
scale=p.x*q.x+p.y*q.y; |
|
|
offset=gamma*scale*length; |
|
|
return(offset); |
|
|
} |
|
|
case RadialGradient: |
|
|
{ |
|
|
PointInfo |
|
|
v; |
|
|
|
|
|
if (gradient->spread == RepeatSpread) |
|
|
{ |
|
|
v.x=(double) x-gradient->center.x; |
|
|
v.y=(double) y-gradient->center.y; |
|
|
return(sqrt(v.x*v.x+v.y*v.y)); |
|
|
} |
|
|
v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians( |
|
|
gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians( |
|
|
gradient->angle))))/gradient->radii.x; |
|
|
v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians( |
|
|
gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians( |
|
|
gradient->angle))))/gradient->radii.y; |
|
|
return(sqrt(v.x*v.x+v.y*v.y)); |
|
|
} |
|
|
} |
|
|
return(0.0); |
|
|
} |
|
|
|
|
|
static int StopInfoCompare(const void *x,const void *y) |
|
|
{ |
|
|
StopInfo |
|
|
*stop_1, |
|
|
*stop_2; |
|
|
|
|
|
stop_1=(StopInfo *) x; |
|
|
stop_2=(StopInfo *) y; |
|
|
if (stop_1->offset > stop_2->offset) |
|
|
return(1); |
|
|
if (fabs(stop_1->offset-stop_2->offset) <= DrawEpsilon) |
|
|
return(0); |
|
|
return(-1); |
|
|
} |
|
|
|
|
|
MagickExport MagickBooleanType DrawGradientImage(Image *image, |
|
|
const DrawInfo *draw_info,ExceptionInfo *exception) |
|
|
{ |
|
|
CacheView |
|
|
*image_view; |
|
|
|
|
|
const GradientInfo |
|
|
*gradient; |
|
|
|
|
|
const SegmentInfo |
|
|
*gradient_vector; |
|
|
|
|
|
double |
|
|
length; |
|
|
|
|
|
MagickBooleanType |
|
|
status; |
|
|
|
|
|
PixelInfo |
|
|
zero; |
|
|
|
|
|
PointInfo |
|
|
point; |
|
|
|
|
|
RectangleInfo |
|
|
bounding_box; |
|
|
|
|
|
ssize_t |
|
|
y; |
|
|
|
|
|
/* |
|
|
Draw linear or radial gradient on image. |
|
|
*/ |
|
|
assert(image != (Image *) NULL); |
|
|
assert(image->signature == MagickCoreSignature); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
|
|
assert(draw_info != (const DrawInfo *) NULL); |
|
|
gradient=(&draw_info->gradient); |
|
|
qsort(gradient->stops,gradient->number_stops,sizeof(StopInfo), |
|
|
StopInfoCompare); |
|
|
gradient_vector=(&gradient->gradient_vector); |
|
|
point.x=gradient_vector->x2-gradient_vector->x1; |
|
|
point.y=gradient_vector->y2-gradient_vector->y1; |
|
|
length=sqrt(point.x*point.x+point.y*point.y); |
|
|
bounding_box=gradient->bounding_box; |
|
|
status=MagickTrue; |
|
|
GetPixelInfo(image,&zero); |
|
|
image_view=AcquireAuthenticCacheView(image,exception); |
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT) |
|
|
#pragma omp parallel for schedule(static,4) shared(status) \ |
|
|
magick_threads(image,image,1,1) |
|
|
#endif |
|
|
for (y=bounding_box.y; y < (ssize_t) bounding_box.height; y++) |
|
|
{ |
|
|
PixelInfo |
|
|
composite, |
|
|
pixel; |
|
|
|
|
|
double |
|
|
alpha, |
|
|
offset; |
|
|
|
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
x; |
|
|
|
|
|
ssize_t |
|
|
j; |
|
|
|
|
|
if (status == MagickFalse) |
|
|
continue; |
|
|
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
continue; |
|
|
} |
|
|
pixel=zero; |
|
|
composite=zero; |
|
|
offset=GetStopColorOffset(gradient,0,y); |
|
|
if (gradient->type != RadialGradient) |
|
|
offset/=length; |
|
|
for (x=bounding_box.x; x < (ssize_t) bounding_box.width; x++) |
|
|
{ |
|
|
GetPixelInfoPixel(image,q,&pixel); |
|
|
switch (gradient->spread) |
|
|
{ |
|
|
case UndefinedSpread: |
|
|
case PadSpread: |
|
|
{ |
|
|
if ((x != (ssize_t) ceil(gradient_vector->x1-0.5)) || |
|
|
(y != (ssize_t) ceil(gradient_vector->y1-0.5))) |
|
|
{ |
|
|
offset=GetStopColorOffset(gradient,x,y); |
|
|
if (gradient->type != RadialGradient) |
|
|
offset/=length; |
|
|
} |
|
|
for (i=0; i < (ssize_t) gradient->number_stops; i++) |
|
|
if (offset < gradient->stops[i].offset) |
|
|
break; |
|
|
if ((offset < 0.0) || (i == 0)) |
|
|
composite=gradient->stops[0].color; |
|
|
else |
|
|
if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops)) |
|
|
composite=gradient->stops[gradient->number_stops-1].color; |
|
|
else |
|
|
{ |
|
|
j=i; |
|
|
i--; |
|
|
alpha=(offset-gradient->stops[i].offset)/ |
|
|
(gradient->stops[j].offset-gradient->stops[i].offset); |
|
|
CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha, |
|
|
&gradient->stops[j].color,alpha,&composite); |
|
|
} |
|
|
break; |
|
|
} |
|
|
case ReflectSpread: |
|
|
{ |
|
|
if ((x != (ssize_t) ceil(gradient_vector->x1-0.5)) || |
|
|
(y != (ssize_t) ceil(gradient_vector->y1-0.5))) |
|
|
{ |
|
|
offset=GetStopColorOffset(gradient,x,y); |
|
|
if (gradient->type != RadialGradient) |
|
|
offset/=length; |
|
|
} |
|
|
if (offset < 0.0) |
|
|
offset=(-offset); |
|
|
if ((ssize_t) fmod(offset,2.0) == 0) |
|
|
offset=fmod(offset,1.0); |
|
|
else |
|
|
offset=1.0-fmod(offset,1.0); |
|
|
for (i=0; i < (ssize_t) gradient->number_stops; i++) |
|
|
if (offset < gradient->stops[i].offset) |
|
|
break; |
|
|
if (i == 0) |
|
|
composite=gradient->stops[0].color; |
|
|
else |
|
|
if (i == (ssize_t) gradient->number_stops) |
|
|
composite=gradient->stops[gradient->number_stops-1].color; |
|
|
else |
|
|
{ |
|
|
j=i; |
|
|
i--; |
|
|
alpha=(offset-gradient->stops[i].offset)/ |
|
|
(gradient->stops[j].offset-gradient->stops[i].offset); |
|
|
CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha, |
|
|
&gradient->stops[j].color,alpha,&composite); |
|
|
} |
|
|
break; |
|
|
} |
|
|
case RepeatSpread: |
|
|
{ |
|
|
MagickBooleanType |
|
|
antialias; |
|
|
|
|
|
double |
|
|
repeat; |
|
|
|
|
|
antialias=MagickFalse; |
|
|
repeat=0.0; |
|
|
if ((x != (ssize_t) ceil(gradient_vector->x1-0.5)) || |
|
|
(y != (ssize_t) ceil(gradient_vector->y1-0.5))) |
|
|
{ |
|
|
offset=GetStopColorOffset(gradient,x,y); |
|
|
if (gradient->type == LinearGradient) |
|
|
{ |
|
|
repeat=fmod(offset,length); |
|
|
if (repeat < 0.0) |
|
|
repeat=length-fmod(-repeat,length); |
|
|
else |
|
|
repeat=fmod(offset,length); |
|
|
antialias=(repeat < length) && ((repeat+1.0) > length) ? |
|
|
MagickTrue : MagickFalse; |
|
|
offset=repeat/length; |
|
|
} |
|
|
else |
|
|
{ |
|
|
repeat=fmod(offset,gradient->radius); |
|
|
if (repeat < 0.0) |
|
|
repeat=gradient->radius-fmod(-repeat,gradient->radius); |
|
|
else |
|
|
repeat=fmod(offset,gradient->radius); |
|
|
antialias=repeat+1.0 > gradient->radius ? MagickTrue : |
|
|
MagickFalse; |
|
|
offset=repeat/gradient->radius; |
|
|
} |
|
|
} |
|
|
for (i=0; i < (ssize_t) gradient->number_stops; i++) |
|
|
if (offset < gradient->stops[i].offset) |
|
|
break; |
|
|
if (i == 0) |
|
|
composite=gradient->stops[0].color; |
|
|
else |
|
|
if (i == (ssize_t) gradient->number_stops) |
|
|
composite=gradient->stops[gradient->number_stops-1].color; |
|
|
else |
|
|
{ |
|
|
j=i; |
|
|
i--; |
|
|
alpha=(offset-gradient->stops[i].offset)/ |
|
|
(gradient->stops[j].offset-gradient->stops[i].offset); |
|
|
if (antialias != MagickFalse) |
|
|
{ |
|
|
if (gradient->type == LinearGradient) |
|
|
alpha=length-repeat; |
|
|
else |
|
|
alpha=gradient->radius-repeat; |
|
|
i=0; |
|
|
j=(ssize_t) gradient->number_stops-1L; |
|
|
} |
|
|
CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha, |
|
|
&gradient->stops[j].color,alpha,&composite); |
|
|
} |
|
|
break; |
|
|
} |
|
|
} |
|
|
CompositePixelInfoOver(&composite,composite.alpha,&pixel,pixel.alpha, |
|
|
&pixel); |
|
|
SetPixelViaPixelInfo(image,&pixel,q); |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
|
|
status=MagickFalse; |
|
|
} |
|
|
image_view=DestroyCacheView(image_view); |
|
|
return(status); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% D r a w P a t t e r n P a t h % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawPatternPath() draws a pattern. |
|
|
% |
|
|
% The format of the DrawPatternPath method is: |
|
|
% |
|
|
% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info, |
|
|
% const char *name,Image **pattern,ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o name: the pattern name. |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
MagickExport MagickBooleanType DrawPatternPath(Image *image, |
|
|
const DrawInfo *draw_info,const char *name,Image **pattern, |
|
|
ExceptionInfo *exception) |
|
|
{ |
|
|
char |
|
|
property[MagickPathExtent]; |
|
|
|
|
|
const char |
|
|
*geometry, |
|
|
*path, |
|
|
*type; |
|
|
|
|
|
DrawInfo |
|
|
*clone_info; |
|
|
|
|
|
ImageInfo |
|
|
*image_info; |
|
|
|
|
|
MagickBooleanType |
|
|
status; |
|
|
|
|
|
assert(image != (Image *) NULL); |
|
|
assert(image->signature == MagickCoreSignature); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
|
|
assert(draw_info != (const DrawInfo *) NULL); |
|
|
assert(name != (const char *) NULL); |
|
|
(void) FormatLocaleString(property,MagickPathExtent,"%s",name); |
|
|
path=GetImageArtifact(image,property); |
|
|
if (path == (const char *) NULL) |
|
|
return(MagickFalse); |
|
|
(void) FormatLocaleString(property,MagickPathExtent,"%s-geometry",name); |
|
|
geometry=GetImageArtifact(image,property); |
|
|
if (geometry == (const char *) NULL) |
|
|
return(MagickFalse); |
|
|
if ((*pattern) != (Image *) NULL) |
|
|
*pattern=DestroyImage(*pattern); |
|
|
image_info=AcquireImageInfo(); |
|
|
image_info->size=AcquireString(geometry); |
|
|
*pattern=AcquireImage(image_info,exception); |
|
|
image_info=DestroyImageInfo(image_info); |
|
|
(void) QueryColorCompliance("#000000ff",AllCompliance, |
|
|
&(*pattern)->background_color,exception); |
|
|
(void) SetImageBackgroundColor(*pattern,exception); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
"begin pattern-path %s %s",name,geometry); |
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
clone_info->fill_pattern=NewImageList(); |
|
|
clone_info->stroke_pattern=NewImageList(); |
|
|
(void) FormatLocaleString(property,MagickPathExtent,"%s-type",name); |
|
|
type=GetImageArtifact(image,property); |
|
|
if (type != (const char *) NULL) |
|
|
clone_info->gradient.type=(GradientType) ParseCommandOption( |
|
|
MagickGradientOptions,MagickFalse,type); |
|
|
(void) CloneString(&clone_info->primitive,path); |
|
|
status=DrawImage(*pattern,clone_info,exception); |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path"); |
|
|
return(status); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ D r a w P o l y g o n P r i m i t i v e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawPolygonPrimitive() draws a polygon on the image. |
|
|
% |
|
|
% The format of the DrawPolygonPrimitive method is: |
|
|
% |
|
|
% MagickBooleanType DrawPolygonPrimitive(Image *image, |
|
|
% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info, |
|
|
% ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o primitive_info: Specifies a pointer to a PrimitiveInfo structure. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
|
|
|
static PolygonInfo **DestroyPolygonThreadSet(PolygonInfo **polygon_info) |
|
|
{ |
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
assert(polygon_info != (PolygonInfo **) NULL); |
|
|
for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++) |
|
|
if (polygon_info[i] != (PolygonInfo *) NULL) |
|
|
polygon_info[i]=DestroyPolygonInfo(polygon_info[i]); |
|
|
polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info); |
|
|
return(polygon_info); |
|
|
} |
|
|
|
|
|
static PolygonInfo **AcquirePolygonThreadSet( |
|
|
const PrimitiveInfo *primitive_info) |
|
|
{ |
|
|
PathInfo |
|
|
*magick_restrict path_info; |
|
|
|
|
|
PolygonInfo |
|
|
**polygon_info; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
size_t |
|
|
number_threads; |
|
|
|
|
|
number_threads=(size_t) GetMagickResourceLimit(ThreadResource); |
|
|
polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads, |
|
|
sizeof(*polygon_info)); |
|
|
if (polygon_info == (PolygonInfo **) NULL) |
|
|
return((PolygonInfo **) NULL); |
|
|
(void) ResetMagickMemory(polygon_info,0,number_threads*sizeof(*polygon_info)); |
|
|
path_info=ConvertPrimitiveToPath(primitive_info); |
|
|
if (path_info == (PathInfo *) NULL) |
|
|
return(DestroyPolygonThreadSet(polygon_info)); |
|
|
for (i=0; i < (ssize_t) number_threads; i++) |
|
|
{ |
|
|
polygon_info[i]=ConvertPathToPolygon(path_info); |
|
|
if (polygon_info[i] == (PolygonInfo *) NULL) |
|
|
return(DestroyPolygonThreadSet(polygon_info)); |
|
|
} |
|
|
path_info=(PathInfo *) RelinquishMagickMemory(path_info); |
|
|
return(polygon_info); |
|
|
} |
|
|
|
|
|
static double GetFillAlpha(PolygonInfo *polygon_info,const double mid, |
|
|
const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x, |
|
|
const ssize_t y,double *stroke_alpha) |
|
|
{ |
|
|
double |
|
|
alpha, |
|
|
beta, |
|
|
distance, |
|
|
subpath_alpha; |
|
|
|
|
|
PointInfo |
|
|
delta; |
|
|
|
|
|
register const PointInfo |
|
|
*q; |
|
|
|
|
|
register EdgeInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
ssize_t |
|
|
j, |
|
|
winding_number; |
|
|
|
|
|
/* |
|
|
Compute fill & stroke opacity for this (x,y) point. |
|
|
*/ |
|
|
*stroke_alpha=0.0; |
|
|
subpath_alpha=0.0; |
|
|
p=polygon_info->edges; |
|
|
for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++) |
|
|
{ |
|
|
if ((double) y <= (p->bounds.y1-mid-0.5)) |
|
|
break; |
|
|
if ((double) y > (p->bounds.y2+mid+0.5)) |
|
|
{ |
|
|
(void) DestroyEdge(polygon_info,(size_t) j); |
|
|
continue; |
|
|
} |
|
|
if (((double) x <= (p->bounds.x1-mid-0.5)) || |
|
|
((double) x > (p->bounds.x2+mid+0.5))) |
|
|
continue; |
|
|
i=(ssize_t) MagickMax((double) p->highwater,1.0); |
|
|
for ( ; i < (ssize_t) p->number_points; i++) |
|
|
{ |
|
|
if ((double) y <= (p->points[i-1].y-mid-0.5)) |
|
|
break; |
|
|
if ((double) y > (p->points[i].y+mid+0.5)) |
|
|
continue; |
|
|
if (p->scanline != (double) y) |
|
|
{ |
|
|
p->scanline=(double) y; |
|
|
p->highwater=(size_t) i; |
|
|
} |
|
|
/* |
|
|
Compute distance between a point and an edge. |
|
|
*/ |
|
|
q=p->points+i-1; |
|
|
delta.x=(q+1)->x-q->x; |
|
|
delta.y=(q+1)->y-q->y; |
|
|
beta=delta.x*(x-q->x)+delta.y*(y-q->y); |
|
|
if (beta < 0.0) |
|
|
{ |
|
|
delta.x=(double) x-q->x; |
|
|
delta.y=(double) y-q->y; |
|
|
distance=delta.x*delta.x+delta.y*delta.y; |
|
|
} |
|
|
else |
|
|
{ |
|
|
alpha=delta.x*delta.x+delta.y*delta.y; |
|
|
if (beta > alpha) |
|
|
{ |
|
|
delta.x=(double) x-(q+1)->x; |
|
|
delta.y=(double) y-(q+1)->y; |
|
|
distance=delta.x*delta.x+delta.y*delta.y; |
|
|
} |
|
|
else |
|
|
{ |
|
|
alpha=1.0/alpha; |
|
|
beta=delta.x*(y-q->y)-delta.y*(x-q->x); |
|
|
distance=alpha*beta*beta; |
|
|
} |
|
|
} |
|
|
/* |
|
|
Compute stroke & subpath opacity. |
|
|
*/ |
|
|
beta=0.0; |
|
|
if (p->ghostline == MagickFalse) |
|
|
{ |
|
|
alpha=mid+0.5; |
|
|
if ((*stroke_alpha < 1.0) && |
|
|
(distance <= ((alpha+0.25)*(alpha+0.25)))) |
|
|
{ |
|
|
alpha=mid-0.5; |
|
|
if (distance <= ((alpha+0.25)*(alpha+0.25))) |
|
|
*stroke_alpha=1.0; |
|
|
else |
|
|
{ |
|
|
beta=1.0; |
|
|
if (fabs(distance-1.0) >= DrawEpsilon) |
|
|
beta=sqrt((double) distance); |
|
|
alpha=beta-mid-0.5; |
|
|
if (*stroke_alpha < ((alpha-0.25)*(alpha-0.25))) |
|
|
*stroke_alpha=(alpha-0.25)*(alpha-0.25); |
|
|
} |
|
|
} |
|
|
} |
|
|
if ((fill == MagickFalse) || (distance > 1.0) || (subpath_alpha >= 1.0)) |
|
|
continue; |
|
|
if (distance <= 0.0) |
|
|
{ |
|
|
subpath_alpha=1.0; |
|
|
continue; |
|
|
} |
|
|
if (distance > 1.0) |
|
|
continue; |
|
|
if (fabs(beta) < DrawEpsilon) |
|
|
{ |
|
|
beta=1.0; |
|
|
if (fabs(distance-1.0) >= DrawEpsilon) |
|
|
beta=sqrt(distance); |
|
|
} |
|
|
alpha=beta-1.0; |
|
|
if (subpath_alpha < (alpha*alpha)) |
|
|
subpath_alpha=alpha*alpha; |
|
|
} |
|
|
} |
|
|
/* |
|
|
Compute fill opacity. |
|
|
*/ |
|
|
if (fill == MagickFalse) |
|
|
return(0.0); |
|
|
if (subpath_alpha >= 1.0) |
|
|
return(1.0); |
|
|
/* |
|
|
Determine winding number. |
|
|
*/ |
|
|
winding_number=0; |
|
|
p=polygon_info->edges; |
|
|
for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++) |
|
|
{ |
|
|
if ((double) y <= p->bounds.y1) |
|
|
break; |
|
|
if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1)) |
|
|
continue; |
|
|
if ((double) x > p->bounds.x2) |
|
|
{ |
|
|
winding_number+=p->direction ? 1 : -1; |
|
|
continue; |
|
|
} |
|
|
i=(ssize_t) MagickMax((double) p->highwater,1.0); |
|
|
for ( ; i < (ssize_t) p->number_points; i++) |
|
|
if ((double) y <= p->points[i].y) |
|
|
break; |
|
|
q=p->points+i-1; |
|
|
if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x))) |
|
|
winding_number+=p->direction ? 1 : -1; |
|
|
} |
|
|
if (fill_rule != NonZeroRule) |
|
|
{ |
|
|
if ((MagickAbsoluteValue(winding_number) & 0x01) != 0) |
|
|
return(1.0); |
|
|
} |
|
|
else |
|
|
if (MagickAbsoluteValue(winding_number) != 0) |
|
|
return(1.0); |
|
|
return(subpath_alpha); |
|
|
} |
|
|
|
|
|
static MagickBooleanType DrawPolygonPrimitive(Image *image, |
|
|
const DrawInfo *draw_info,const PrimitiveInfo *primitive_info, |
|
|
ExceptionInfo *exception) |
|
|
{ |
|
|
CacheView |
|
|
*image_view; |
|
|
|
|
|
MagickBooleanType |
|
|
fill, |
|
|
status; |
|
|
|
|
|
double |
|
|
mid; |
|
|
|
|
|
PolygonInfo |
|
|
**magick_restrict polygon_info; |
|
|
|
|
|
register EdgeInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
SegmentInfo |
|
|
bounds; |
|
|
|
|
|
ssize_t |
|
|
start_y, |
|
|
stop_y, |
|
|
y; |
|
|
|
|
|
/* |
|
|
Compute bounding box. |
|
|
*/ |
|
|
assert(image != (Image *) NULL); |
|
|
assert(image->signature == MagickCoreSignature); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
|
|
assert(draw_info != (DrawInfo *) NULL); |
|
|
assert(draw_info->signature == MagickCoreSignature); |
|
|
assert(primitive_info != (PrimitiveInfo *) NULL); |
|
|
if (primitive_info->coordinates == 0) |
|
|
return(MagickTrue); |
|
|
polygon_info=AcquirePolygonThreadSet(primitive_info); |
|
|
if (polygon_info == (PolygonInfo **) NULL) |
|
|
return(MagickFalse); |
|
|
DisableMSCWarning(4127) |
|
|
if (0) |
|
|
DrawBoundingRectangles(image,draw_info,polygon_info[0],exception); |
|
|
RestoreMSCWarning |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon"); |
|
|
fill=(primitive_info->method == FillToBorderMethod) || |
|
|
(primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse; |
|
|
mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0; |
|
|
bounds=polygon_info[0]->edges[0].bounds; |
|
|
for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++) |
|
|
{ |
|
|
p=polygon_info[0]->edges+i; |
|
|
if (p->bounds.x1 < bounds.x1) |
|
|
bounds.x1=p->bounds.x1; |
|
|
if (p->bounds.y1 < bounds.y1) |
|
|
bounds.y1=p->bounds.y1; |
|
|
if (p->bounds.x2 > bounds.x2) |
|
|
bounds.x2=p->bounds.x2; |
|
|
if (p->bounds.y2 > bounds.y2) |
|
|
bounds.y2=p->bounds.y2; |
|
|
} |
|
|
bounds.x1-=(mid+1.0); |
|
|
bounds.x1=bounds.x1 < 0.0 ? 0.0 : (size_t) ceil(bounds.x1-0.5) >= |
|
|
image->columns ? (double) image->columns-1 : bounds.x1; |
|
|
bounds.y1-=(mid+1.0); |
|
|
bounds.y1=bounds.y1 < 0.0 ? 0.0 : (size_t) ceil(bounds.y1-0.5) >= |
|
|
image->rows ? (double) image->rows-1 : bounds.y1; |
|
|
bounds.x2+=(mid+1.0); |
|
|
bounds.x2=bounds.x2 < 0.0 ? 0.0 : (size_t) floor(bounds.x2+0.5) >= |
|
|
image->columns ? (double) image->columns-1 : bounds.x2; |
|
|
bounds.y2+=(mid+1.0); |
|
|
bounds.y2=bounds.y2 < 0.0 ? 0.0 : (size_t) floor(bounds.y2+0.5) >= |
|
|
image->rows ? (double) image->rows-1 : bounds.y2; |
|
|
status=MagickTrue; |
|
|
image_view=AcquireAuthenticCacheView(image,exception); |
|
|
if ((primitive_info->coordinates == 1) || |
|
|
(polygon_info[0]->number_edges == 0)) |
|
|
{ |
|
|
/* |
|
|
Draw point. |
|
|
*/ |
|
|
start_y=(ssize_t) ceil(bounds.y1-0.5); |
|
|
stop_y=(ssize_t) floor(bounds.y2+0.5); |
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT) |
|
|
#pragma omp parallel for schedule(static,4) shared(status) \ |
|
|
magick_threads(image,image,1,1) |
|
|
#endif |
|
|
for (y=start_y; y <= stop_y; y++) |
|
|
{ |
|
|
MagickBooleanType |
|
|
sync; |
|
|
|
|
|
PixelInfo |
|
|
pixel; |
|
|
|
|
|
register ssize_t |
|
|
x; |
|
|
|
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
ssize_t |
|
|
start_x, |
|
|
stop_x; |
|
|
|
|
|
if (status == MagickFalse) |
|
|
continue; |
|
|
start_x=(ssize_t) ceil(bounds.x1-0.5); |
|
|
stop_x=(ssize_t) floor(bounds.x2+0.5); |
|
|
x=start_x; |
|
|
q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (stop_x-x+1),1, |
|
|
exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
continue; |
|
|
} |
|
|
GetPixelInfo(image,&pixel); |
|
|
for ( ; x <= stop_x; x++) |
|
|
{ |
|
|
if ((x == (ssize_t) ceil(primitive_info->point.x-0.5)) && |
|
|
(y == (ssize_t) ceil(primitive_info->point.y-0.5))) |
|
|
{ |
|
|
GetFillColor(draw_info,x-start_x,y-start_y,&pixel,exception); |
|
|
SetPixelViaPixelInfo(image,&pixel,q); |
|
|
} |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
sync=SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
if (sync == MagickFalse) |
|
|
status=MagickFalse; |
|
|
} |
|
|
image_view=DestroyCacheView(image_view); |
|
|
polygon_info=DestroyPolygonThreadSet(polygon_info); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" end draw-polygon"); |
|
|
return(status); |
|
|
} |
|
|
/* |
|
|
Draw polygon or line. |
|
|
*/ |
|
|
if (image->alpha_trait == UndefinedPixelTrait) |
|
|
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception); |
|
|
start_y=(ssize_t) ceil(bounds.y1-0.5); |
|
|
stop_y=(ssize_t) floor(bounds.y2+0.5); |
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT) |
|
|
#pragma omp parallel for schedule(static,4) shared(status) \ |
|
|
magick_threads(image,image,1,1) |
|
|
#endif |
|
|
for (y=start_y; y <= stop_y; y++) |
|
|
{ |
|
|
const int |
|
|
id = GetOpenMPThreadId(); |
|
|
|
|
|
double |
|
|
fill_alpha, |
|
|
stroke_alpha; |
|
|
|
|
|
PixelInfo |
|
|
fill_color, |
|
|
stroke_color; |
|
|
|
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
register ssize_t |
|
|
x; |
|
|
|
|
|
ssize_t |
|
|
start_x, |
|
|
stop_x; |
|
|
|
|
|
if (status == MagickFalse) |
|
|
continue; |
|
|
start_x=(ssize_t) ceil(bounds.x1-0.5); |
|
|
stop_x=(ssize_t) floor(bounds.x2+0.5); |
|
|
q=GetCacheViewAuthenticPixels(image_view,start_x,y,(size_t) (stop_x-start_x+1),1, |
|
|
exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
{ |
|
|
status=MagickFalse; |
|
|
continue; |
|
|
} |
|
|
for (x=start_x; x <= stop_x; x++) |
|
|
{ |
|
|
/* |
|
|
Fill and/or stroke. |
|
|
*/ |
|
|
fill_alpha=GetFillAlpha(polygon_info[id],mid,fill,draw_info->fill_rule, |
|
|
x,y,&stroke_alpha); |
|
|
if (draw_info->stroke_antialias == MagickFalse) |
|
|
{ |
|
|
fill_alpha=fill_alpha > 0.25 ? 1.0 : 0.0; |
|
|
stroke_alpha=stroke_alpha > 0.25 ? 1.0 : 0.0; |
|
|
} |
|
|
GetFillColor(draw_info,x-start_x,y-start_y,&fill_color,exception); |
|
|
fill_alpha=fill_alpha*fill_color.alpha; |
|
|
CompositePixelOver(image,&fill_color,fill_alpha,q,(double) |
|
|
GetPixelAlpha(image,q),q); |
|
|
GetStrokeColor(draw_info,x-start_x,y-start_y,&stroke_color,exception); |
|
|
stroke_alpha=stroke_alpha*stroke_color.alpha; |
|
|
CompositePixelOver(image,&stroke_color,stroke_alpha,q,(double) |
|
|
GetPixelAlpha(image,q),q); |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
|
|
status=MagickFalse; |
|
|
} |
|
|
image_view=DestroyCacheView(image_view); |
|
|
polygon_info=DestroyPolygonThreadSet(polygon_info); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon"); |
|
|
return(status); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% D r a w P r i m i t i v e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image. |
|
|
% |
|
|
% The format of the DrawPrimitive method is: |
|
|
% |
|
|
% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info, |
|
|
% PrimitiveInfo *primitive_info,ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o primitive_info: Specifies a pointer to a PrimitiveInfo structure. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
|
|
|
static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info) |
|
|
{ |
|
|
const char |
|
|
*methods[] = |
|
|
{ |
|
|
"point", |
|
|
"replace", |
|
|
"floodfill", |
|
|
"filltoborder", |
|
|
"reset", |
|
|
"?" |
|
|
}; |
|
|
|
|
|
PointInfo |
|
|
p, |
|
|
q, |
|
|
point; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
x; |
|
|
|
|
|
ssize_t |
|
|
coordinates, |
|
|
y; |
|
|
|
|
|
x=(ssize_t) ceil(primitive_info->point.x-0.5); |
|
|
y=(ssize_t) ceil(primitive_info->point.y-0.5); |
|
|
switch (primitive_info->primitive) |
|
|
{ |
|
|
case AlphaPrimitive: |
|
|
{ |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
"AlphaPrimitive %.20g,%.20g %s",(double) x,(double) y, |
|
|
methods[primitive_info->method]); |
|
|
return; |
|
|
} |
|
|
case ColorPrimitive: |
|
|
{ |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
"ColorPrimitive %.20g,%.20g %s",(double) x,(double) y, |
|
|
methods[primitive_info->method]); |
|
|
return; |
|
|
} |
|
|
case ImagePrimitive: |
|
|
{ |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
"ImagePrimitive %.20g,%.20g",(double) x,(double) y); |
|
|
return; |
|
|
} |
|
|
case PointPrimitive: |
|
|
{ |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
"PointPrimitive %.20g,%.20g %s",(double) x,(double) y, |
|
|
methods[primitive_info->method]); |
|
|
return; |
|
|
} |
|
|
case TextPrimitive: |
|
|
{ |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
"TextPrimitive %.20g,%.20g",(double) x,(double) y); |
|
|
return; |
|
|
} |
|
|
default: |
|
|
break; |
|
|
} |
|
|
coordinates=0; |
|
|
p=primitive_info[0].point; |
|
|
q.x=(-1.0); |
|
|
q.y=(-1.0); |
|
|
for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) |
|
|
{ |
|
|
point=primitive_info[i].point; |
|
|
if (coordinates <= 0) |
|
|
{ |
|
|
coordinates=(ssize_t) primitive_info[i].coordinates; |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" begin open (%.20g)",(double) coordinates); |
|
|
p=point; |
|
|
} |
|
|
point=primitive_info[i].point; |
|
|
if ((fabs(q.x-point.x) >= DrawEpsilon) || |
|
|
(fabs(q.y-point.y) >= DrawEpsilon)) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y); |
|
|
else |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y); |
|
|
q=point; |
|
|
coordinates--; |
|
|
if (coordinates > 0) |
|
|
continue; |
|
|
if ((fabs(p.x-point.x) >= DrawEpsilon) || |
|
|
(fabs(p.y-point.y) >= DrawEpsilon)) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)", |
|
|
(double) coordinates); |
|
|
else |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)", |
|
|
(double) coordinates); |
|
|
} |
|
|
} |
|
|
|
|
|
MagickExport MagickBooleanType DrawPrimitive(Image *image, |
|
|
const DrawInfo *draw_info,const PrimitiveInfo *primitive_info, |
|
|
ExceptionInfo *exception) |
|
|
{ |
|
|
CacheView |
|
|
*image_view; |
|
|
|
|
|
MagickStatusType |
|
|
status; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
x; |
|
|
|
|
|
ssize_t |
|
|
y; |
|
|
|
|
|
if (image->debug != MagickFalse) |
|
|
{ |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" begin draw-primitive"); |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx, |
|
|
draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy, |
|
|
draw_info->affine.tx,draw_info->affine.ty); |
|
|
} |
|
|
if ((IsGrayColorspace(image->colorspace) != MagickFalse) && |
|
|
((IsPixelInfoGray(&draw_info->fill) == MagickFalse) || |
|
|
(IsPixelInfoGray(&draw_info->stroke) == MagickFalse))) |
|
|
(void) SetImageColorspace(image,sRGBColorspace,exception); |
|
|
status=MagickTrue; |
|
|
x=(ssize_t) ceil(primitive_info->point.x-0.5); |
|
|
y=(ssize_t) ceil(primitive_info->point.y-0.5); |
|
|
image_view=AcquireAuthenticCacheView(image,exception); |
|
|
switch (primitive_info->primitive) |
|
|
{ |
|
|
case AlphaPrimitive: |
|
|
{ |
|
|
if (image->alpha_trait == UndefinedPixelTrait) |
|
|
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception); |
|
|
switch (primitive_info->method) |
|
|
{ |
|
|
case PointMethod: |
|
|
default: |
|
|
{ |
|
|
PixelInfo |
|
|
pixel; |
|
|
|
|
|
register Quantum |
|
|
*q; |
|
|
|
|
|
q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
GetFillColor(draw_info,x,y,&pixel,exception); |
|
|
SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q); |
|
|
(void) SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
break; |
|
|
} |
|
|
case ReplaceMethod: |
|
|
{ |
|
|
MagickBooleanType |
|
|
sync; |
|
|
|
|
|
PixelInfo |
|
|
pixel, |
|
|
target; |
|
|
|
|
|
(void) GetOneCacheViewVirtualPixelInfo(image_view,x,y,&target, |
|
|
exception); |
|
|
GetPixelInfo(image,&pixel); |
|
|
for (y=0; y < (ssize_t) image->rows; y++) |
|
|
{ |
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1, |
|
|
exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
for (x=0; x < (ssize_t) image->columns; x++) |
|
|
{ |
|
|
GetPixelInfoPixel(image,q,&pixel); |
|
|
if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse) |
|
|
{ |
|
|
q+=GetPixelChannels(image); |
|
|
continue; |
|
|
} |
|
|
GetFillColor(draw_info,x,y,&pixel,exception); |
|
|
SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q); |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
sync=SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
if (sync == MagickFalse) |
|
|
break; |
|
|
} |
|
|
break; |
|
|
} |
|
|
case FloodfillMethod: |
|
|
case FillToBorderMethod: |
|
|
{ |
|
|
ChannelType |
|
|
channel_mask; |
|
|
|
|
|
PixelInfo |
|
|
target; |
|
|
|
|
|
(void) GetOneVirtualPixelInfo(image,TileVirtualPixelMethod,x,y, |
|
|
&target,exception); |
|
|
if (primitive_info->method == FillToBorderMethod) |
|
|
{ |
|
|
target.red=(double) draw_info->border_color.red; |
|
|
target.green=(double) draw_info->border_color.green; |
|
|
target.blue=(double) draw_info->border_color.blue; |
|
|
} |
|
|
channel_mask=SetImageChannelMask(image,AlphaChannel); |
|
|
status&=FloodfillPaintImage(image,draw_info,&target,x,y, |
|
|
primitive_info->method == FloodfillMethod ? MagickFalse : |
|
|
MagickTrue,exception); |
|
|
(void) SetImageChannelMask(image,channel_mask); |
|
|
break; |
|
|
} |
|
|
case ResetMethod: |
|
|
{ |
|
|
MagickBooleanType |
|
|
sync; |
|
|
|
|
|
PixelInfo |
|
|
pixel; |
|
|
|
|
|
for (y=0; y < (ssize_t) image->rows; y++) |
|
|
{ |
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1, |
|
|
exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
for (x=0; x < (ssize_t) image->columns; x++) |
|
|
{ |
|
|
GetFillColor(draw_info,x,y,&pixel,exception); |
|
|
SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q); |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
sync=SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
if (sync == MagickFalse) |
|
|
break; |
|
|
} |
|
|
break; |
|
|
} |
|
|
} |
|
|
break; |
|
|
} |
|
|
case ColorPrimitive: |
|
|
{ |
|
|
switch (primitive_info->method) |
|
|
{ |
|
|
case PointMethod: |
|
|
default: |
|
|
{ |
|
|
PixelInfo |
|
|
pixel; |
|
|
|
|
|
register Quantum |
|
|
*q; |
|
|
|
|
|
q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
GetPixelInfo(image,&pixel); |
|
|
GetFillColor(draw_info,x,y,&pixel,exception); |
|
|
SetPixelViaPixelInfo(image,&pixel,q); |
|
|
(void) SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
break; |
|
|
} |
|
|
case ReplaceMethod: |
|
|
{ |
|
|
MagickBooleanType |
|
|
sync; |
|
|
|
|
|
PixelInfo |
|
|
pixel, |
|
|
target; |
|
|
|
|
|
(void) GetOneCacheViewVirtualPixelInfo(image_view,x,y,&target, |
|
|
exception); |
|
|
for (y=0; y < (ssize_t) image->rows; y++) |
|
|
{ |
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1, |
|
|
exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
for (x=0; x < (ssize_t) image->columns; x++) |
|
|
{ |
|
|
GetPixelInfoPixel(image,q,&pixel); |
|
|
if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse) |
|
|
{ |
|
|
q+=GetPixelChannels(image); |
|
|
continue; |
|
|
} |
|
|
GetFillColor(draw_info,x,y,&pixel,exception); |
|
|
SetPixelViaPixelInfo(image,&pixel,q); |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
sync=SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
if (sync == MagickFalse) |
|
|
break; |
|
|
} |
|
|
break; |
|
|
} |
|
|
case FloodfillMethod: |
|
|
case FillToBorderMethod: |
|
|
{ |
|
|
PixelInfo |
|
|
target; |
|
|
|
|
|
(void) GetOneVirtualPixelInfo(image,TileVirtualPixelMethod,x,y, |
|
|
&target,exception); |
|
|
if (primitive_info->method == FillToBorderMethod) |
|
|
{ |
|
|
target.red=(double) draw_info->border_color.red; |
|
|
target.green=(double) draw_info->border_color.green; |
|
|
target.blue=(double) draw_info->border_color.blue; |
|
|
} |
|
|
status&=FloodfillPaintImage(image,draw_info,&target,x,y, |
|
|
primitive_info->method == FloodfillMethod ? MagickFalse : |
|
|
MagickTrue,exception); |
|
|
break; |
|
|
} |
|
|
case ResetMethod: |
|
|
{ |
|
|
MagickBooleanType |
|
|
sync; |
|
|
|
|
|
PixelInfo |
|
|
pixel; |
|
|
|
|
|
GetPixelInfo(image,&pixel); |
|
|
for (y=0; y < (ssize_t) image->rows; y++) |
|
|
{ |
|
|
register Quantum |
|
|
*magick_restrict q; |
|
|
|
|
|
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1, |
|
|
exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
for (x=0; x < (ssize_t) image->columns; x++) |
|
|
{ |
|
|
GetFillColor(draw_info,x,y,&pixel,exception); |
|
|
SetPixelViaPixelInfo(image,&pixel,q); |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
sync=SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
if (sync == MagickFalse) |
|
|
break; |
|
|
} |
|
|
break; |
|
|
} |
|
|
} |
|
|
break; |
|
|
} |
|
|
case ImagePrimitive: |
|
|
{ |
|
|
AffineMatrix |
|
|
affine; |
|
|
|
|
|
char |
|
|
composite_geometry[MagickPathExtent]; |
|
|
|
|
|
Image |
|
|
*composite_image; |
|
|
|
|
|
ImageInfo |
|
|
*clone_info; |
|
|
|
|
|
RectangleInfo |
|
|
geometry; |
|
|
|
|
|
ssize_t |
|
|
x1, |
|
|
y1; |
|
|
|
|
|
if (primitive_info->text == (char *) NULL) |
|
|
break; |
|
|
clone_info=AcquireImageInfo(); |
|
|
if (LocaleNCompare(primitive_info->text,"data:",5) == 0) |
|
|
composite_image=ReadInlineImage(clone_info,primitive_info->text, |
|
|
exception); |
|
|
else |
|
|
{ |
|
|
(void) CopyMagickString(clone_info->filename,primitive_info->text, |
|
|
MagickPathExtent); |
|
|
composite_image=ReadImage(clone_info,exception); |
|
|
} |
|
|
clone_info=DestroyImageInfo(clone_info); |
|
|
if (composite_image == (Image *) NULL) |
|
|
break; |
|
|
(void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor) |
|
|
NULL,(void *) NULL); |
|
|
x1=(ssize_t) ceil(primitive_info[1].point.x-0.5); |
|
|
y1=(ssize_t) ceil(primitive_info[1].point.y-0.5); |
|
|
if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) || |
|
|
((y1 != 0L) && (y1 != (ssize_t) composite_image->rows))) |
|
|
{ |
|
|
/* |
|
|
Resize image. |
|
|
*/ |
|
|
(void) FormatLocaleString(composite_geometry,MagickPathExtent, |
|
|
"%gx%g!",primitive_info[1].point.x,primitive_info[1].point.y); |
|
|
composite_image->filter=image->filter; |
|
|
(void) TransformImage(&composite_image,(char *) NULL, |
|
|
composite_geometry,exception); |
|
|
} |
|
|
if (composite_image->alpha_trait == UndefinedPixelTrait) |
|
|
(void) SetImageAlphaChannel(composite_image,OpaqueAlphaChannel, |
|
|
exception); |
|
|
if (draw_info->alpha != OpaqueAlpha) |
|
|
(void) SetImageAlpha(composite_image,draw_info->alpha,exception); |
|
|
SetGeometry(image,&geometry); |
|
|
image->gravity=draw_info->gravity; |
|
|
geometry.x=x; |
|
|
geometry.y=y; |
|
|
(void) FormatLocaleString(composite_geometry,MagickPathExtent, |
|
|
"%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double) |
|
|
composite_image->rows,(double) geometry.x,(double) geometry.y); |
|
|
(void) ParseGravityGeometry(image,composite_geometry,&geometry,exception); |
|
|
affine=draw_info->affine; |
|
|
affine.tx=(double) geometry.x; |
|
|
affine.ty=(double) geometry.y; |
|
|
composite_image->interpolate=image->interpolate; |
|
|
if (draw_info->compose == OverCompositeOp) |
|
|
(void) DrawAffineImage(image,composite_image,&affine,exception); |
|
|
else |
|
|
(void) CompositeImage(image,composite_image,draw_info->compose, |
|
|
MagickTrue,geometry.x,geometry.y,exception); |
|
|
composite_image=DestroyImage(composite_image); |
|
|
break; |
|
|
} |
|
|
case PointPrimitive: |
|
|
{ |
|
|
PixelInfo |
|
|
fill_color; |
|
|
|
|
|
register Quantum |
|
|
*q; |
|
|
|
|
|
if ((y < 0) || (y >= (ssize_t) image->rows)) |
|
|
break; |
|
|
if ((x < 0) || (x >= (ssize_t) image->columns)) |
|
|
break; |
|
|
q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
GetFillColor(draw_info,x,y,&fill_color,exception); |
|
|
CompositePixelOver(image,&fill_color,(double) fill_color.alpha,q, |
|
|
(double) GetPixelAlpha(image,q),q); |
|
|
(void) SyncCacheViewAuthenticPixels(image_view,exception); |
|
|
break; |
|
|
} |
|
|
case TextPrimitive: |
|
|
{ |
|
|
char |
|
|
geometry[MagickPathExtent]; |
|
|
|
|
|
DrawInfo |
|
|
*clone_info; |
|
|
|
|
|
if (primitive_info->text == (char *) NULL) |
|
|
break; |
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
(void) CloneString(&clone_info->text,primitive_info->text); |
|
|
(void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f", |
|
|
primitive_info->point.x,primitive_info->point.y); |
|
|
(void) CloneString(&clone_info->geometry,geometry); |
|
|
status&=AnnotateImage(image,clone_info,exception); |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
break; |
|
|
} |
|
|
default: |
|
|
{ |
|
|
double |
|
|
mid, |
|
|
scale; |
|
|
|
|
|
DrawInfo |
|
|
*clone_info; |
|
|
|
|
|
if (IsEventLogging() != MagickFalse) |
|
|
LogPrimitiveInfo(primitive_info); |
|
|
scale=ExpandAffine(&draw_info->affine); |
|
|
if ((draw_info->dash_pattern != (double *) NULL) && |
|
|
(fabs(draw_info->dash_pattern[0]) >= DrawEpsilon) && |
|
|
(fabs(scale*draw_info->stroke_width) >= DrawEpsilon) && |
|
|
(draw_info->stroke.alpha != (Quantum) TransparentAlpha)) |
|
|
{ |
|
|
/* |
|
|
Draw dash polygon. |
|
|
*/ |
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
clone_info->stroke_width=0.0; |
|
|
clone_info->stroke.alpha=(MagickRealType) TransparentAlpha; |
|
|
status&=DrawPolygonPrimitive(image,clone_info,primitive_info, |
|
|
exception); |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
(void) DrawDashPolygon(draw_info,primitive_info,image,exception); |
|
|
break; |
|
|
} |
|
|
mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0; |
|
|
if ((mid > 1.0) && |
|
|
((draw_info->stroke.alpha != (Quantum) TransparentAlpha) || |
|
|
(draw_info->stroke_pattern != (Image *) NULL))) |
|
|
{ |
|
|
MagickBooleanType |
|
|
closed_path; |
|
|
|
|
|
/* |
|
|
Draw strokes while respecting line cap/join attributes. |
|
|
*/ |
|
|
for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ; |
|
|
closed_path= |
|
|
(fabs(primitive_info[i-1].point.x-primitive_info[0].point.x) < DrawEpsilon) && |
|
|
(fabs(primitive_info[i-1].point.y-primitive_info[0].point.y) < DrawEpsilon) ? |
|
|
MagickTrue : MagickFalse; |
|
|
i=(ssize_t) primitive_info[0].coordinates; |
|
|
if (((closed_path != MagickFalse) && |
|
|
(draw_info->linejoin == RoundJoin)) || |
|
|
(primitive_info[i].primitive != UndefinedPrimitive)) |
|
|
{ |
|
|
(void) DrawPolygonPrimitive(image,draw_info,primitive_info, |
|
|
exception); |
|
|
break; |
|
|
} |
|
|
if (draw_info->linecap == RoundCap) |
|
|
{ |
|
|
(void) DrawPolygonPrimitive(image,draw_info,primitive_info, |
|
|
exception); |
|
|
break; |
|
|
} |
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
clone_info->stroke_width=0.0; |
|
|
clone_info->stroke.alpha=(MagickRealType) TransparentAlpha; |
|
|
status&=DrawPolygonPrimitive(image,clone_info,primitive_info, |
|
|
exception); |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
status&=DrawStrokePolygon(image,draw_info,primitive_info,exception); |
|
|
break; |
|
|
} |
|
|
status&=DrawPolygonPrimitive(image,draw_info,primitive_info,exception); |
|
|
break; |
|
|
} |
|
|
} |
|
|
image_view=DestroyCacheView(image_view); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive"); |
|
|
return(status != 0 ? MagickTrue : MagickFalse); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ D r a w S t r o k e P o l y g o n % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on |
|
|
% the image while respecting the line cap and join attributes. |
|
|
% |
|
|
% The format of the DrawStrokePolygon method is: |
|
|
% |
|
|
% MagickBooleanType DrawStrokePolygon(Image *image, |
|
|
% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image: the image. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
% o primitive_info: Specifies a pointer to a PrimitiveInfo structure. |
|
|
% |
|
|
% |
|
|
*/ |
|
|
|
|
|
static void DrawRoundLinecap(Image *image,const DrawInfo *draw_info, |
|
|
const PrimitiveInfo *primitive_info,ExceptionInfo *exception) |
|
|
{ |
|
|
PrimitiveInfo |
|
|
linecap[5]; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
for (i=0; i < 4; i++) |
|
|
linecap[i]=(*primitive_info); |
|
|
linecap[0].coordinates=4; |
|
|
linecap[1].point.x+=2.0*DrawEpsilon; |
|
|
linecap[2].point.x+=2.0*DrawEpsilon; |
|
|
linecap[2].point.y+=2.0*DrawEpsilon; |
|
|
linecap[3].point.y+=2.0*DrawEpsilon; |
|
|
linecap[4].primitive=UndefinedPrimitive; |
|
|
(void) DrawPolygonPrimitive(image,draw_info,linecap,exception); |
|
|
} |
|
|
|
|
|
static MagickBooleanType DrawStrokePolygon(Image *image, |
|
|
const DrawInfo *draw_info,const PrimitiveInfo *primitive_info, |
|
|
ExceptionInfo *exception) |
|
|
{ |
|
|
DrawInfo |
|
|
*clone_info; |
|
|
|
|
|
MagickBooleanType |
|
|
closed_path; |
|
|
|
|
|
MagickStatusType |
|
|
status; |
|
|
|
|
|
PrimitiveInfo |
|
|
*stroke_polygon; |
|
|
|
|
|
register const PrimitiveInfo |
|
|
*p, |
|
|
*q; |
|
|
|
|
|
/* |
|
|
Draw stroked polygon. |
|
|
*/ |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" begin draw-stroke-polygon"); |
|
|
clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info); |
|
|
clone_info->fill=draw_info->stroke; |
|
|
if (clone_info->fill_pattern != (Image *) NULL) |
|
|
clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern); |
|
|
if (clone_info->stroke_pattern != (Image *) NULL) |
|
|
clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0, |
|
|
MagickTrue,exception); |
|
|
clone_info->stroke.alpha=(MagickRealType) TransparentAlpha; |
|
|
clone_info->stroke_width=0.0; |
|
|
clone_info->fill_rule=NonZeroRule; |
|
|
status=MagickTrue; |
|
|
for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=p->coordinates) |
|
|
{ |
|
|
stroke_polygon=TraceStrokePolygon(draw_info,p); |
|
|
status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon,exception); |
|
|
if (status == 0) |
|
|
break; |
|
|
stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon); |
|
|
q=p+p->coordinates-1; |
|
|
closed_path=(fabs(q->point.x-p->point.x) < DrawEpsilon) && |
|
|
(fabs(q->point.y-p->point.y) < DrawEpsilon) ? MagickTrue : MagickFalse; |
|
|
if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse)) |
|
|
{ |
|
|
DrawRoundLinecap(image,draw_info,p,exception); |
|
|
DrawRoundLinecap(image,draw_info,q,exception); |
|
|
} |
|
|
} |
|
|
clone_info=DestroyDrawInfo(clone_info); |
|
|
if (image->debug != MagickFalse) |
|
|
(void) LogMagickEvent(DrawEvent,GetMagickModule(), |
|
|
" end draw-stroke-polygon"); |
|
|
return(status != 0 ? MagickTrue : MagickFalse); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% G e t A f f i n e M a t r i x % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% GetAffineMatrix() returns an AffineMatrix initialized to the identity |
|
|
% matrix. |
|
|
% |
|
|
% The format of the GetAffineMatrix method is: |
|
|
% |
|
|
% void GetAffineMatrix(AffineMatrix *affine_matrix) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o affine_matrix: the affine matrix. |
|
|
% |
|
|
*/ |
|
|
MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix) |
|
|
{ |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
|
|
assert(affine_matrix != (AffineMatrix *) NULL); |
|
|
(void) ResetMagickMemory(affine_matrix,0,sizeof(*affine_matrix)); |
|
|
affine_matrix->sx=1.0; |
|
|
affine_matrix->sy=1.0; |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ G e t D r a w I n f o % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% GetDrawInfo() initializes draw_info to default values from image_info. |
|
|
% |
|
|
% The format of the GetDrawInfo method is: |
|
|
% |
|
|
% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o image_info: the image info.. |
|
|
% |
|
|
% o draw_info: the draw info. |
|
|
% |
|
|
*/ |
|
|
MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info) |
|
|
{ |
|
|
char |
|
|
*next_token; |
|
|
|
|
|
const char |
|
|
*option; |
|
|
|
|
|
ExceptionInfo |
|
|
*exception; |
|
|
|
|
|
ImageInfo |
|
|
*clone_info; |
|
|
|
|
|
/* |
|
|
Initialize draw attributes. |
|
|
*/ |
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
|
|
assert(draw_info != (DrawInfo *) NULL); |
|
|
(void) ResetMagickMemory(draw_info,0,sizeof(*draw_info)); |
|
|
clone_info=CloneImageInfo(image_info); |
|
|
GetAffineMatrix(&draw_info->affine); |
|
|
exception=AcquireExceptionInfo(); |
|
|
(void) QueryColorCompliance("#000F",AllCompliance,&draw_info->fill, |
|
|
exception); |
|
|
(void) QueryColorCompliance("#0000",AllCompliance,&draw_info->stroke, |
|
|
exception); |
|
|
draw_info->stroke_width=1.0; |
|
|
draw_info->fill_rule=EvenOddRule; |
|
|
draw_info->fill_alpha=OpaqueAlpha; |
|
|
draw_info->stroke_alpha=OpaqueAlpha; |
|
|
draw_info->linecap=ButtCap; |
|
|
draw_info->linejoin=MiterJoin; |
|
|
draw_info->miterlimit=10; |
|
|
draw_info->decorate=NoDecoration; |
|
|
draw_info->pointsize=12.0; |
|
|
draw_info->undercolor.alpha=(MagickRealType) TransparentAlpha; |
|
|
draw_info->compose=OverCompositeOp; |
|
|
draw_info->render=MagickTrue; |
|
|
draw_info->debug=IsEventLogging(); |
|
|
draw_info->stroke_antialias=clone_info->antialias; |
|
|
if (clone_info->font != (char *) NULL) |
|
|
draw_info->font=AcquireString(clone_info->font); |
|
|
if (clone_info->density != (char *) NULL) |
|
|
draw_info->density=AcquireString(clone_info->density); |
|
|
draw_info->text_antialias=clone_info->antialias; |
|
|
if (fabs(clone_info->pointsize) >= DrawEpsilon) |
|
|
draw_info->pointsize=clone_info->pointsize; |
|
|
draw_info->border_color=clone_info->border_color; |
|
|
if (clone_info->server_name != (char *) NULL) |
|
|
draw_info->server_name=AcquireString(clone_info->server_name); |
|
|
option=GetImageOption(clone_info,"direction"); |
|
|
if (option != (const char *) NULL) |
|
|
draw_info->direction=(DirectionType) ParseCommandOption( |
|
|
MagickDirectionOptions,MagickFalse,option); |
|
|
else |
|
|
draw_info->direction=UndefinedDirection; |
|
|
option=GetImageOption(clone_info,"encoding"); |
|
|
if (option != (const char *) NULL) |
|
|
(void) CloneString(&draw_info->encoding,option); |
|
|
option=GetImageOption(clone_info,"family"); |
|
|
if (option != (const char *) NULL) |
|
|
(void) CloneString(&draw_info->family,option); |
|
|
option=GetImageOption(clone_info,"fill"); |
|
|
if (option != (const char *) NULL) |
|
|
(void) QueryColorCompliance(option,AllCompliance,&draw_info->fill, |
|
|
exception); |
|
|
option=GetImageOption(clone_info,"gravity"); |
|
|
if (option != (const char *) NULL) |
|
|
draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions, |
|
|
MagickFalse,option); |
|
|
option=GetImageOption(clone_info,"interline-spacing"); |
|
|
if (option != (const char *) NULL) |
|
|
draw_info->interline_spacing=StringToDouble(option,&next_token); |
|
|
option=GetImageOption(clone_info,"interword-spacing"); |
|
|
if (option != (const char *) NULL) |
|
|
draw_info->interword_spacing=StringToDouble(option,&next_token); |
|
|
option=GetImageOption(clone_info,"kerning"); |
|
|
if (option != (const char *) NULL) |
|
|
draw_info->kerning=StringToDouble(option,&next_token); |
|
|
option=GetImageOption(clone_info,"stroke"); |
|
|
if (option != (const char *) NULL) |
|
|
(void) QueryColorCompliance(option,AllCompliance,&draw_info->stroke, |
|
|
exception); |
|
|
option=GetImageOption(clone_info,"strokewidth"); |
|
|
if (option != (const char *) NULL) |
|
|
draw_info->stroke_width=StringToDouble(option,&next_token); |
|
|
option=GetImageOption(clone_info,"style"); |
|
|
if (option != (const char *) NULL) |
|
|
draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions, |
|
|
MagickFalse,option); |
|
|
option=GetImageOption(clone_info,"undercolor"); |
|
|
if (option != (const char *) NULL) |
|
|
(void) QueryColorCompliance(option,AllCompliance,&draw_info->undercolor, |
|
|
exception); |
|
|
option=GetImageOption(clone_info,"weight"); |
|
|
if (option != (const char *) NULL) |
|
|
{ |
|
|
ssize_t |
|
|
weight; |
|
|
|
|
|
weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option); |
|
|
if (weight == -1) |
|
|
weight=(ssize_t) StringToUnsignedLong(option); |
|
|
draw_info->weight=(size_t) weight; |
|
|
} |
|
|
exception=DestroyExceptionInfo(exception); |
|
|
draw_info->signature=MagickCoreSignature; |
|
|
clone_info=DestroyImageInfo(clone_info); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ P e r m u t a t e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% Permutate() returns the permuation of the (n,k). |
|
|
% |
|
|
% The format of the Permutate method is: |
|
|
% |
|
|
% void Permutate(ssize_t n,ssize_t k) |
|
|
% |
|
|
% A description of each parameter follows: |
|
|
% |
|
|
% o n: |
|
|
% |
|
|
% o k: |
|
|
% |
|
|
% |
|
|
*/ |
|
|
static inline double Permutate(const ssize_t n,const ssize_t k) |
|
|
{ |
|
|
double |
|
|
r; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
r=1.0; |
|
|
for (i=k+1; i <= n; i++) |
|
|
r*=i; |
|
|
for (i=1; i <= (n-k); i++) |
|
|
r/=i; |
|
|
return(r); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
+ T r a c e P r i m i t i v e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% TracePrimitive is a collection of methods for generating graphic |
|
|
% primitives such as arcs, ellipses, paths, etc. |
|
|
% |
|
|
*/ |
|
|
|
|
|
static void TraceArc(PrimitiveInfo *primitive_info,const PointInfo start, |
|
|
const PointInfo end,const PointInfo degrees) |
|
|
{ |
|
|
PointInfo |
|
|
center, |
|
|
radii; |
|
|
|
|
|
center.x=0.5*(end.x+start.x); |
|
|
center.y=0.5*(end.y+start.y); |
|
|
radii.x=fabs(center.x-start.x); |
|
|
radii.y=fabs(center.y-start.y); |
|
|
TraceEllipse(primitive_info,center,radii,degrees); |
|
|
} |
|
|
|
|
|
static void TraceArcPath(PrimitiveInfo *primitive_info,const PointInfo start, |
|
|
const PointInfo end,const PointInfo arc,const double angle, |
|
|
const MagickBooleanType large_arc,const MagickBooleanType sweep) |
|
|
{ |
|
|
double |
|
|
alpha, |
|
|
beta, |
|
|
delta, |
|
|
factor, |
|
|
gamma, |
|
|
theta; |
|
|
|
|
|
PointInfo |
|
|
center, |
|
|
points[3], |
|
|
radii; |
|
|
|
|
|
register double |
|
|
cosine, |
|
|
sine; |
|
|
|
|
|
register PrimitiveInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
size_t |
|
|
arc_segments; |
|
|
|
|
|
if ((fabs(start.x-end.x) < DrawEpsilon) && |
|
|
(fabs(start.y-end.y) < DrawEpsilon)) |
|
|
{ |
|
|
TracePoint(primitive_info,end); |
|
|
return; |
|
|
} |
|
|
radii.x=fabs(arc.x); |
|
|
radii.y=fabs(arc.y); |
|
|
if ((fabs(radii.x) < DrawEpsilon) || (fabs(radii.y) < DrawEpsilon)) |
|
|
{ |
|
|
TraceLine(primitive_info,start,end); |
|
|
return; |
|
|
} |
|
|
cosine=cos(DegreesToRadians(fmod((double) angle,360.0))); |
|
|
sine=sin(DegreesToRadians(fmod((double) angle,360.0))); |
|
|
center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2); |
|
|
center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2); |
|
|
delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/ |
|
|
(radii.y*radii.y); |
|
|
if (delta < DrawEpsilon) |
|
|
{ |
|
|
TraceLine(primitive_info,start,end); |
|
|
return; |
|
|
} |
|
|
if (delta > 1.0) |
|
|
{ |
|
|
radii.x*=sqrt((double) delta); |
|
|
radii.y*=sqrt((double) delta); |
|
|
} |
|
|
points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x); |
|
|
points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y); |
|
|
points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x); |
|
|
points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y); |
|
|
alpha=points[1].x-points[0].x; |
|
|
beta=points[1].y-points[0].y; |
|
|
factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25; |
|
|
if (factor <= 0.0) |
|
|
factor=0.0; |
|
|
else |
|
|
{ |
|
|
factor=sqrt((double) factor); |
|
|
if (sweep == large_arc) |
|
|
factor=(-factor); |
|
|
} |
|
|
center.x=(double) ((points[0].x+points[1].x)/2-factor*beta); |
|
|
center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha); |
|
|
alpha=atan2(points[0].y-center.y,points[0].x-center.x); |
|
|
theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha; |
|
|
if ((theta < 0.0) && (sweep != MagickFalse)) |
|
|
theta+=(double) (2.0*MagickPI); |
|
|
else |
|
|
if ((theta > 0.0) && (sweep == MagickFalse)) |
|
|
theta-=(double) (2.0*MagickPI); |
|
|
arc_segments=(size_t) ceil(fabs((double) (theta/(0.5*MagickPI+ |
|
|
DrawEpsilon)))); |
|
|
p=primitive_info; |
|
|
for (i=0; i < (ssize_t) arc_segments; i++) |
|
|
{ |
|
|
beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments)); |
|
|
gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))* |
|
|
sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/ |
|
|
sin(fmod((double) beta,DegreesToRadians(360.0))); |
|
|
points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/ |
|
|
arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+ |
|
|
(double) i*theta/arc_segments),DegreesToRadians(360.0)))); |
|
|
points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/ |
|
|
arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+ |
|
|
(double) i*theta/arc_segments),DegreesToRadians(360.0)))); |
|
|
points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)* |
|
|
theta/arc_segments),DegreesToRadians(360.0)))); |
|
|
points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)* |
|
|
theta/arc_segments),DegreesToRadians(360.0)))); |
|
|
points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double) |
|
|
(i+1)*theta/arc_segments),DegreesToRadians(360.0)))); |
|
|
points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double) |
|
|
(i+1)*theta/arc_segments),DegreesToRadians(360.0)))); |
|
|
p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x; |
|
|
p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y; |
|
|
(p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y* |
|
|
points[0].y); |
|
|
(p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y* |
|
|
points[0].y); |
|
|
(p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y* |
|
|
points[1].y); |
|
|
(p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y* |
|
|
points[1].y); |
|
|
(p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y* |
|
|
points[2].y); |
|
|
(p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y* |
|
|
points[2].y); |
|
|
if (i == (ssize_t) (arc_segments-1)) |
|
|
(p+3)->point=end; |
|
|
TraceBezier(p,4); |
|
|
p+=p->coordinates; |
|
|
} |
|
|
primitive_info->coordinates=(size_t) (p-primitive_info); |
|
|
for (i=0; i < (ssize_t) primitive_info->coordinates; i++) |
|
|
{ |
|
|
p->primitive=primitive_info->primitive; |
|
|
p--; |
|
|
} |
|
|
} |
|
|
|
|
|
static void TraceBezier(PrimitiveInfo *primitive_info, |
|
|
const size_t number_coordinates) |
|
|
{ |
|
|
double |
|
|
alpha, |
|
|
*coefficients, |
|
|
weight; |
|
|
|
|
|
PointInfo |
|
|
end, |
|
|
point, |
|
|
*points; |
|
|
|
|
|
register PrimitiveInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i, |
|
|
j; |
|
|
|
|
|
size_t |
|
|
control_points, |
|
|
quantum; |
|
|
|
|
|
/* |
|
|
Allocate coeficients. |
|
|
*/ |
|
|
quantum=number_coordinates; |
|
|
for (i=0; i < (ssize_t) number_coordinates; i++) |
|
|
{ |
|
|
for (j=i+1; j < (ssize_t) number_coordinates; j++) |
|
|
{ |
|
|
alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x); |
|
|
if (alpha > (double) quantum) |
|
|
quantum=(size_t) alpha; |
|
|
alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y); |
|
|
if (alpha > (double) quantum) |
|
|
quantum=(size_t) alpha; |
|
|
} |
|
|
} |
|
|
quantum=(size_t) MagickMin((double) quantum/number_coordinates, |
|
|
(double) BezierQuantum); |
|
|
control_points=quantum*number_coordinates; |
|
|
coefficients=(double *) AcquireQuantumMemory((size_t) |
|
|
number_coordinates,sizeof(*coefficients)); |
|
|
points=(PointInfo *) AcquireQuantumMemory((size_t) control_points, |
|
|
sizeof(*points)); |
|
|
if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL)) |
|
|
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
|
|
/* |
|
|
Compute bezier points. |
|
|
*/ |
|
|
end=primitive_info[number_coordinates-1].point; |
|
|
for (i=0; i < (ssize_t) number_coordinates; i++) |
|
|
coefficients[i]=Permutate((ssize_t) number_coordinates-1,i); |
|
|
weight=0.0; |
|
|
for (i=0; i < (ssize_t) control_points; i++) |
|
|
{ |
|
|
p=primitive_info; |
|
|
point.x=0.0; |
|
|
point.y=0.0; |
|
|
alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0); |
|
|
for (j=0; j < (ssize_t) number_coordinates; j++) |
|
|
{ |
|
|
point.x+=alpha*coefficients[j]*p->point.x; |
|
|
point.y+=alpha*coefficients[j]*p->point.y; |
|
|
alpha*=weight/(1.0-weight); |
|
|
p++; |
|
|
} |
|
|
points[i]=point; |
|
|
weight+=1.0/control_points; |
|
|
} |
|
|
/* |
|
|
Bezier curves are just short segmented polys. |
|
|
*/ |
|
|
p=primitive_info; |
|
|
for (i=0; i < (ssize_t) control_points; i++) |
|
|
{ |
|
|
TracePoint(p,points[i]); |
|
|
p+=p->coordinates; |
|
|
} |
|
|
TracePoint(p,end); |
|
|
p+=p->coordinates; |
|
|
primitive_info->coordinates=(size_t) (p-primitive_info); |
|
|
for (i=0; i < (ssize_t) primitive_info->coordinates; i++) |
|
|
{ |
|
|
p->primitive=primitive_info->primitive; |
|
|
p--; |
|
|
} |
|
|
points=(PointInfo *) RelinquishMagickMemory(points); |
|
|
coefficients=(double *) RelinquishMagickMemory(coefficients); |
|
|
} |
|
|
|
|
|
static void TraceCircle(PrimitiveInfo *primitive_info,const PointInfo start, |
|
|
const PointInfo end) |
|
|
{ |
|
|
double |
|
|
alpha, |
|
|
beta, |
|
|
radius; |
|
|
|
|
|
PointInfo |
|
|
offset, |
|
|
degrees; |
|
|
|
|
|
alpha=end.x-start.x; |
|
|
beta=end.y-start.y; |
|
|
radius=hypot((double) alpha,(double) beta); |
|
|
offset.x=(double) radius; |
|
|
offset.y=(double) radius; |
|
|
degrees.x=0.0; |
|
|
degrees.y=360.0; |
|
|
TraceEllipse(primitive_info,start,offset,degrees); |
|
|
} |
|
|
|
|
|
static void TraceEllipse(PrimitiveInfo *primitive_info,const PointInfo start, |
|
|
const PointInfo stop,const PointInfo degrees) |
|
|
{ |
|
|
double |
|
|
delta, |
|
|
step, |
|
|
y; |
|
|
|
|
|
PointInfo |
|
|
angle, |
|
|
point; |
|
|
|
|
|
register PrimitiveInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
/* |
|
|
Ellipses are just short segmented polys. |
|
|
*/ |
|
|
if ((fabs(stop.x) < DrawEpsilon) && (fabs(stop.y) < DrawEpsilon)) |
|
|
{ |
|
|
TracePoint(primitive_info,start); |
|
|
return; |
|
|
} |
|
|
delta=2.0/MagickMax(stop.x,stop.y); |
|
|
step=(double) (MagickPI/8.0); |
|
|
if ((delta >= 0.0) && (delta < (double) (MagickPI/8.0))) |
|
|
step=(double) (MagickPI/(4*(MagickPI/delta/2+0.5))); |
|
|
angle.x=DegreesToRadians(degrees.x); |
|
|
y=degrees.y; |
|
|
while (y < degrees.x) |
|
|
y+=360.0; |
|
|
angle.y=(double) DegreesToRadians(y); |
|
|
for (p=primitive_info; angle.x < angle.y; angle.x+=step) |
|
|
{ |
|
|
point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*stop.x+start.x; |
|
|
point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*stop.y+start.y; |
|
|
TracePoint(p,point); |
|
|
p+=p->coordinates; |
|
|
} |
|
|
point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*stop.x+start.x; |
|
|
point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*stop.y+start.y; |
|
|
TracePoint(p,point); |
|
|
p+=p->coordinates; |
|
|
primitive_info->coordinates=(size_t) (p-primitive_info); |
|
|
for (i=0; i < (ssize_t) primitive_info->coordinates; i++) |
|
|
{ |
|
|
p->primitive=primitive_info->primitive; |
|
|
p--; |
|
|
} |
|
|
} |
|
|
|
|
|
static void TraceLine(PrimitiveInfo *primitive_info,const PointInfo start, |
|
|
const PointInfo end) |
|
|
{ |
|
|
TracePoint(primitive_info,start); |
|
|
if ((fabs(start.x-end.x) < DrawEpsilon) && |
|
|
(fabs(start.y-end.y) < DrawEpsilon)) |
|
|
{ |
|
|
primitive_info->primitive=PointPrimitive; |
|
|
primitive_info->coordinates=1; |
|
|
return; |
|
|
} |
|
|
TracePoint(primitive_info+1,end); |
|
|
(primitive_info+1)->primitive=primitive_info->primitive; |
|
|
primitive_info->coordinates=2; |
|
|
} |
|
|
|
|
|
static size_t TracePath(PrimitiveInfo *primitive_info,const char *path) |
|
|
{ |
|
|
char |
|
|
*next_token, |
|
|
token[MagickPathExtent]; |
|
|
|
|
|
const char |
|
|
*p; |
|
|
|
|
|
int |
|
|
attribute, |
|
|
last_attribute; |
|
|
|
|
|
double |
|
|
x, |
|
|
y; |
|
|
|
|
|
PointInfo |
|
|
end = {0.0, 0.0}, |
|
|
points[4] = { {0.0,0.0}, {0.0,0.0}, {0.0,0.0}, {0.0,0.0} }, |
|
|
point = {0.0, 0.0}, |
|
|
start = {0.0, 0.0}; |
|
|
|
|
|
PrimitiveType |
|
|
primitive_type; |
|
|
|
|
|
register PrimitiveInfo |
|
|
*q; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
size_t |
|
|
number_coordinates, |
|
|
z_count; |
|
|
|
|
|
attribute=0; |
|
|
number_coordinates=0; |
|
|
z_count=0; |
|
|
primitive_type=primitive_info->primitive; |
|
|
q=primitive_info; |
|
|
for (p=path; *p != '\0'; ) |
|
|
{ |
|
|
while (isspace((int) ((unsigned char) *p)) != 0) |
|
|
p++; |
|
|
if (*p == '\0') |
|
|
break; |
|
|
last_attribute=attribute; |
|
|
attribute=(int) (*p++); |
|
|
switch (attribute) |
|
|
{ |
|
|
case 'a': |
|
|
case 'A': |
|
|
{ |
|
|
MagickBooleanType |
|
|
large_arc, |
|
|
sweep; |
|
|
|
|
|
double |
|
|
angle; |
|
|
|
|
|
PointInfo |
|
|
arc; |
|
|
|
|
|
/* |
|
|
Compute arc points. |
|
|
*/ |
|
|
do |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
arc.x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
arc.y=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
angle=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse; |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse; |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
end.x=(double) (attribute == (int) 'A' ? x : point.x+x); |
|
|
end.y=(double) (attribute == (int) 'A' ? y : point.y+y); |
|
|
TraceArcPath(q,point,end,arc,angle,large_arc,sweep); |
|
|
q+=q->coordinates; |
|
|
point=end; |
|
|
while (isspace((int) ((unsigned char) *p)) != 0) |
|
|
p++; |
|
|
if (*p == ',') |
|
|
p++; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 'c': |
|
|
case 'C': |
|
|
{ |
|
|
/* |
|
|
Compute bezier points. |
|
|
*/ |
|
|
do |
|
|
{ |
|
|
points[0]=point; |
|
|
for (i=1; i < 4; i++) |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
end.x=(double) (attribute == (int) 'C' ? x : point.x+x); |
|
|
end.y=(double) (attribute == (int) 'C' ? y : point.y+y); |
|
|
points[i]=end; |
|
|
} |
|
|
for (i=0; i < 4; i++) |
|
|
(q+i)->point=points[i]; |
|
|
TraceBezier(q,4); |
|
|
q+=q->coordinates; |
|
|
point=end; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 'H': |
|
|
case 'h': |
|
|
{ |
|
|
do |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
point.x=(double) (attribute == (int) 'H' ? x: point.x+x); |
|
|
TracePoint(q,point); |
|
|
q+=q->coordinates; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 'l': |
|
|
case 'L': |
|
|
{ |
|
|
do |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
point.x=(double) (attribute == (int) 'L' ? x : point.x+x); |
|
|
point.y=(double) (attribute == (int) 'L' ? y : point.y+y); |
|
|
TracePoint(q,point); |
|
|
q+=q->coordinates; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 'M': |
|
|
case 'm': |
|
|
{ |
|
|
if (q != primitive_info) |
|
|
{ |
|
|
primitive_info->coordinates=(size_t) (q-primitive_info); |
|
|
number_coordinates+=primitive_info->coordinates; |
|
|
primitive_info=q; |
|
|
} |
|
|
i=0; |
|
|
do |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
point.x=(double) (attribute == (int) 'M' ? x : point.x+x); |
|
|
point.y=(double) (attribute == (int) 'M' ? y : point.y+y); |
|
|
if (i == 0) |
|
|
start=point; |
|
|
i++; |
|
|
TracePoint(q,point); |
|
|
q+=q->coordinates; |
|
|
if ((i != 0) && (attribute == (int) 'M')) |
|
|
{ |
|
|
TracePoint(q,point); |
|
|
q+=q->coordinates; |
|
|
} |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 'q': |
|
|
case 'Q': |
|
|
{ |
|
|
/* |
|
|
Compute bezier points. |
|
|
*/ |
|
|
do |
|
|
{ |
|
|
points[0]=point; |
|
|
for (i=1; i < 3; i++) |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
if (*p == ',') |
|
|
p++; |
|
|
end.x=(double) (attribute == (int) 'Q' ? x : point.x+x); |
|
|
end.y=(double) (attribute == (int) 'Q' ? y : point.y+y); |
|
|
points[i]=end; |
|
|
} |
|
|
for (i=0; i < 3; i++) |
|
|
(q+i)->point=points[i]; |
|
|
TraceBezier(q,3); |
|
|
q+=q->coordinates; |
|
|
point=end; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 's': |
|
|
case 'S': |
|
|
{ |
|
|
/* |
|
|
Compute bezier points. |
|
|
*/ |
|
|
do |
|
|
{ |
|
|
points[0]=points[3]; |
|
|
points[1].x=2.0*points[3].x-points[2].x; |
|
|
points[1].y=2.0*points[3].y-points[2].y; |
|
|
for (i=2; i < 4; i++) |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
if (*p == ',') |
|
|
p++; |
|
|
end.x=(double) (attribute == (int) 'S' ? x : point.x+x); |
|
|
end.y=(double) (attribute == (int) 'S' ? y : point.y+y); |
|
|
points[i]=end; |
|
|
} |
|
|
if (strchr("CcSs",last_attribute) == (char *) NULL) |
|
|
{ |
|
|
points[0]=point; |
|
|
points[1]=point; |
|
|
} |
|
|
for (i=0; i < 4; i++) |
|
|
(q+i)->point=points[i]; |
|
|
TraceBezier(q,4); |
|
|
q+=q->coordinates; |
|
|
point=end; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 't': |
|
|
case 'T': |
|
|
{ |
|
|
/* |
|
|
Compute bezier points. |
|
|
*/ |
|
|
do |
|
|
{ |
|
|
points[0]=points[2]; |
|
|
points[1].x=2.0*points[2].x-points[1].x; |
|
|
points[1].y=2.0*points[2].y-points[1].y; |
|
|
for (i=2; i < 3; i++) |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
x=StringToDouble(token,&next_token); |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
end.x=(double) (attribute == (int) 'T' ? x : point.x+x); |
|
|
end.y=(double) (attribute == (int) 'T' ? y : point.y+y); |
|
|
points[i]=end; |
|
|
} |
|
|
if (strchr("QqTt",last_attribute) == (char *) NULL) |
|
|
{ |
|
|
points[0]=point; |
|
|
points[1]=point; |
|
|
} |
|
|
for (i=0; i < 3; i++) |
|
|
(q+i)->point=points[i]; |
|
|
TraceBezier(q,3); |
|
|
q+=q->coordinates; |
|
|
point=end; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 'v': |
|
|
case 'V': |
|
|
{ |
|
|
do |
|
|
{ |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
if (*token == ',') |
|
|
GetNextToken(p,&p,MagickPathExtent,token); |
|
|
y=StringToDouble(token,&next_token); |
|
|
point.y=(double) (attribute == (int) 'V' ? y : point.y+y); |
|
|
TracePoint(q,point); |
|
|
q+=q->coordinates; |
|
|
} while (IsPoint(p) != MagickFalse); |
|
|
break; |
|
|
} |
|
|
case 'z': |
|
|
case 'Z': |
|
|
{ |
|
|
point=start; |
|
|
TracePoint(q,point); |
|
|
q+=q->coordinates; |
|
|
primitive_info->coordinates=(size_t) (q-primitive_info); |
|
|
number_coordinates+=primitive_info->coordinates; |
|
|
primitive_info=q; |
|
|
z_count++; |
|
|
break; |
|
|
} |
|
|
default: |
|
|
{ |
|
|
if (isalpha((int) ((unsigned char) attribute)) != 0) |
|
|
(void) FormatLocaleFile(stderr,"attribute not recognized: %c\n", |
|
|
attribute); |
|
|
break; |
|
|
} |
|
|
} |
|
|
} |
|
|
primitive_info->coordinates=(size_t) (q-primitive_info); |
|
|
number_coordinates+=primitive_info->coordinates; |
|
|
for (i=0; i < (ssize_t) number_coordinates; i++) |
|
|
{ |
|
|
q--; |
|
|
q->primitive=primitive_type; |
|
|
if (z_count > 1) |
|
|
q->method=FillToBorderMethod; |
|
|
} |
|
|
q=primitive_info; |
|
|
return(number_coordinates); |
|
|
} |
|
|
|
|
|
static void TraceRectangle(PrimitiveInfo *primitive_info,const PointInfo start, |
|
|
const PointInfo end) |
|
|
{ |
|
|
PointInfo |
|
|
point; |
|
|
|
|
|
register PrimitiveInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
p=primitive_info; |
|
|
TracePoint(p,start); |
|
|
p+=p->coordinates; |
|
|
point.x=start.x; |
|
|
point.y=end.y; |
|
|
TracePoint(p,point); |
|
|
p+=p->coordinates; |
|
|
TracePoint(p,end); |
|
|
p+=p->coordinates; |
|
|
point.x=end.x; |
|
|
point.y=start.y; |
|
|
TracePoint(p,point); |
|
|
p+=p->coordinates; |
|
|
TracePoint(p,start); |
|
|
p+=p->coordinates; |
|
|
primitive_info->coordinates=(size_t) (p-primitive_info); |
|
|
for (i=0; i < (ssize_t) primitive_info->coordinates; i++) |
|
|
{ |
|
|
p->primitive=primitive_info->primitive; |
|
|
p--; |
|
|
} |
|
|
} |
|
|
|
|
|
static void TraceRoundRectangle(PrimitiveInfo *primitive_info, |
|
|
const PointInfo start,const PointInfo end,PointInfo arc) |
|
|
{ |
|
|
PointInfo |
|
|
degrees, |
|
|
offset, |
|
|
point; |
|
|
|
|
|
register PrimitiveInfo |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
p=primitive_info; |
|
|
offset.x=fabs(end.x-start.x); |
|
|
offset.y=fabs(end.y-start.y); |
|
|
if (arc.x > (0.5*offset.x)) |
|
|
arc.x=0.5*offset.x; |
|
|
if (arc.y > (0.5*offset.y)) |
|
|
arc.y=0.5*offset.y; |
|
|
point.x=start.x+offset.x-arc.x; |
|
|
point.y=start.y+arc.y; |
|
|
degrees.x=270.0; |
|
|
degrees.y=360.0; |
|
|
TraceEllipse(p,point,arc,degrees); |
|
|
p+=p->coordinates; |
|
|
point.x=start.x+offset.x-arc.x; |
|
|
point.y=start.y+offset.y-arc.y; |
|
|
degrees.x=0.0; |
|
|
degrees.y=90.0; |
|
|
TraceEllipse(p,point,arc,degrees); |
|
|
p+=p->coordinates; |
|
|
point.x=start.x+arc.x; |
|
|
point.y=start.y+offset.y-arc.y; |
|
|
degrees.x=90.0; |
|
|
degrees.y=180.0; |
|
|
TraceEllipse(p,point,arc,degrees); |
|
|
p+=p->coordinates; |
|
|
point.x=start.x+arc.x; |
|
|
point.y=start.y+arc.y; |
|
|
degrees.x=180.0; |
|
|
degrees.y=270.0; |
|
|
TraceEllipse(p,point,arc,degrees); |
|
|
p+=p->coordinates; |
|
|
TracePoint(p,primitive_info->point); |
|
|
p+=p->coordinates; |
|
|
primitive_info->coordinates=(size_t) (p-primitive_info); |
|
|
for (i=0; i < (ssize_t) primitive_info->coordinates; i++) |
|
|
{ |
|
|
p->primitive=primitive_info->primitive; |
|
|
p--; |
|
|
} |
|
|
} |
|
|
|
|
|
static void TraceSquareLinecap(PrimitiveInfo *primitive_info, |
|
|
const size_t number_vertices,const double offset) |
|
|
{ |
|
|
double |
|
|
distance; |
|
|
|
|
|
register double |
|
|
dx, |
|
|
dy; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
ssize_t |
|
|
j; |
|
|
|
|
|
dx=0.0; |
|
|
dy=0.0; |
|
|
for (i=1; i < (ssize_t) number_vertices; i++) |
|
|
{ |
|
|
dx=primitive_info[0].point.x-primitive_info[i].point.x; |
|
|
dy=primitive_info[0].point.y-primitive_info[i].point.y; |
|
|
if ((fabs((double) dx) >= DrawEpsilon) || |
|
|
(fabs((double) dy) >= DrawEpsilon)) |
|
|
break; |
|
|
} |
|
|
if (i == (ssize_t) number_vertices) |
|
|
i=(ssize_t) number_vertices-1L; |
|
|
distance=hypot((double) dx,(double) dy); |
|
|
primitive_info[0].point.x=(double) (primitive_info[i].point.x+ |
|
|
dx*(distance+offset)/distance); |
|
|
primitive_info[0].point.y=(double) (primitive_info[i].point.y+ |
|
|
dy*(distance+offset)/distance); |
|
|
for (j=(ssize_t) number_vertices-2; j >= 0; j--) |
|
|
{ |
|
|
dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x; |
|
|
dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y; |
|
|
if ((fabs((double) dx) >= DrawEpsilon) || |
|
|
(fabs((double) dy) >= DrawEpsilon)) |
|
|
break; |
|
|
} |
|
|
distance=hypot((double) dx,(double) dy); |
|
|
primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+ |
|
|
dx*(distance+offset)/distance); |
|
|
primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+ |
|
|
dy*(distance+offset)/distance); |
|
|
} |
|
|
|
|
|
static inline double DrawEpsilonReciprocal(const double x) |
|
|
{ |
|
|
double sign = x < 0.0 ? -1.0 : 1.0; |
|
|
return((sign*x) >= DrawEpsilon ? 1.0/x : sign*(1.0/DrawEpsilon)); |
|
|
} |
|
|
|
|
|
static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info, |
|
|
const PrimitiveInfo *primitive_info) |
|
|
{ |
|
|
typedef struct _LineSegment |
|
|
{ |
|
|
double |
|
|
p, |
|
|
q; |
|
|
} LineSegment; |
|
|
|
|
|
LineSegment |
|
|
dx, |
|
|
dy, |
|
|
inverse_slope, |
|
|
slope, |
|
|
theta; |
|
|
|
|
|
MagickBooleanType |
|
|
closed_path; |
|
|
|
|
|
double |
|
|
delta_theta, |
|
|
dot_product, |
|
|
mid, |
|
|
miterlimit; |
|
|
|
|
|
PointInfo |
|
|
box_p[5], |
|
|
box_q[5], |
|
|
center, |
|
|
offset, |
|
|
*path_p, |
|
|
*path_q; |
|
|
|
|
|
PrimitiveInfo |
|
|
*polygon_primitive, |
|
|
*stroke_polygon; |
|
|
|
|
|
register ssize_t |
|
|
i; |
|
|
|
|
|
size_t |
|
|
arc_segments, |
|
|
max_strokes, |
|
|
number_vertices; |
|
|
|
|
|
ssize_t |
|
|
j, |
|
|
n, |
|
|
p, |
|
|
q; |
|
|
|
|
|
/* |
|
|
Allocate paths. |
|
|
*/ |
|
|
number_vertices=primitive_info->coordinates; |
|
|
max_strokes=2*number_vertices+6*BezierQuantum+360; |
|
|
path_p=(PointInfo *) AcquireQuantumMemory((size_t) max_strokes, |
|
|
sizeof(*path_p)); |
|
|
path_q=(PointInfo *) AcquireQuantumMemory((size_t) max_strokes, |
|
|
sizeof(*path_q)); |
|
|
polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t) |
|
|
number_vertices+2UL,sizeof(*polygon_primitive)); |
|
|
if ((path_p == (PointInfo *) NULL) || (path_q == (PointInfo *) NULL) || |
|
|
(polygon_primitive == (PrimitiveInfo *) NULL)) |
|
|
return((PrimitiveInfo *) NULL); |
|
|
(void) CopyMagickMemory(polygon_primitive,primitive_info,(size_t) |
|
|
number_vertices*sizeof(*polygon_primitive)); |
|
|
closed_path= |
|
|
(primitive_info[number_vertices-1].point.x == primitive_info[0].point.x) && |
|
|
(primitive_info[number_vertices-1].point.y == primitive_info[0].point.y) ? |
|
|
MagickTrue : MagickFalse; |
|
|
if ((draw_info->linejoin == RoundJoin) || |
|
|
((draw_info->linejoin == MiterJoin) && (closed_path != MagickFalse))) |
|
|
{ |
|
|
polygon_primitive[number_vertices]=primitive_info[1]; |
|
|
number_vertices++; |
|
|
} |
|
|
polygon_primitive[number_vertices].primitive=UndefinedPrimitive; |
|
|
/* |
|
|
Compute the slope for the first line segment, p. |
|
|
*/ |
|
|
dx.p=0.0; |
|
|
dy.p=0.0; |
|
|
for (n=1; n < (ssize_t) number_vertices; n++) |
|
|
{ |
|
|
dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x; |
|
|
dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y; |
|
|
if ((fabs(dx.p) >= DrawEpsilon) || (fabs(dy.p) >= DrawEpsilon)) |
|
|
break; |
|
|
} |
|
|
if (n == (ssize_t) number_vertices) |
|
|
n=(ssize_t) number_vertices-1L; |
|
|
slope.p=0.0; |
|
|
inverse_slope.p=0.0; |
|
|
if (fabs(dx.p) < DrawEpsilon) |
|
|
{ |
|
|
if (dx.p >= 0.0) |
|
|
slope.p=dy.p < 0.0 ? -1.0/DrawEpsilon : 1.0/DrawEpsilon; |
|
|
else |
|
|
slope.p=dy.p < 0.0 ? 1.0/DrawEpsilon : -1.0/DrawEpsilon; |
|
|
} |
|
|
else |
|
|
if (fabs(dy.p) < DrawEpsilon) |
|
|
{ |
|
|
if (dy.p >= 0.0) |
|
|
inverse_slope.p=dx.p < 0.0 ? -1.0/DrawEpsilon : 1.0/DrawEpsilon; |
|
|
else |
|
|
inverse_slope.p=dx.p < 0.0 ? 1.0/DrawEpsilon : -1.0/DrawEpsilon; |
|
|
} |
|
|
else |
|
|
{ |
|
|
slope.p=dy.p/dx.p; |
|
|
inverse_slope.p=(-1.0/slope.p); |
|
|
} |
|
|
mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0; |
|
|
miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit* |
|
|
mid*mid); |
|
|
if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse)) |
|
|
TraceSquareLinecap(polygon_primitive,number_vertices,mid); |
|
|
offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0))); |
|
|
offset.y=(double) (offset.x*inverse_slope.p); |
|
|
if ((dy.p*offset.x-dx.p*offset.y) > 0.0) |
|
|
{ |
|
|
box_p[0].x=polygon_primitive[0].point.x-offset.x; |
|
|
box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p; |
|
|
box_p[1].x=polygon_primitive[n].point.x-offset.x; |
|
|
box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p; |
|
|
box_q[0].x=polygon_primitive[0].point.x+offset.x; |
|
|
box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p; |
|
|
box_q[1].x=polygon_primitive[n].point.x+offset.x; |
|
|
box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p; |
|
|
} |
|
|
else |
|
|
{ |
|
|
box_p[0].x=polygon_primitive[0].point.x+offset.x; |
|
|
box_p[0].y=polygon_primitive[0].point.y+offset.y; |
|
|
box_p[1].x=polygon_primitive[n].point.x+offset.x; |
|
|
box_p[1].y=polygon_primitive[n].point.y+offset.y; |
|
|
box_q[0].x=polygon_primitive[0].point.x-offset.x; |
|
|
box_q[0].y=polygon_primitive[0].point.y-offset.y; |
|
|
box_q[1].x=polygon_primitive[n].point.x-offset.x; |
|
|
box_q[1].y=polygon_primitive[n].point.y-offset.y; |
|
|
} |
|
|
/* |
|
|
Create strokes for the line join attribute: bevel, miter, round. |
|
|
*/ |
|
|
p=0; |
|
|
q=0; |
|
|
path_q[p++]=box_q[0]; |
|
|
path_p[q++]=box_p[0]; |
|
|
for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++) |
|
|
{ |
|
|
/* |
|
|
Compute the slope for this line segment, q. |
|
|
*/ |
|
|
dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x; |
|
|
dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y; |
|
|
dot_product=dx.q*dx.q+dy.q*dy.q; |
|
|
if (dot_product < 0.25) |
|
|
continue; |
|
|
slope.q=0.0; |
|
|
inverse_slope.q=0.0; |
|
|
if (fabs(dx.q) < DrawEpsilon) |
|
|
{ |
|
|
if (dx.q >= 0.0) |
|
|
slope.q=dy.q < 0.0 ? -1.0/DrawEpsilon : 1.0/DrawEpsilon; |
|
|
else |
|
|
slope.q=dy.q < 0.0 ? 1.0/DrawEpsilon : -1.0/DrawEpsilon; |
|
|
} |
|
|
else |
|
|
if (fabs(dy.q) < DrawEpsilon) |
|
|
{ |
|
|
if (dy.q >= 0.0) |
|
|
inverse_slope.q=dx.q < 0.0 ? -1.0/DrawEpsilon : 1.0/DrawEpsilon; |
|
|
else |
|
|
inverse_slope.q=dx.q < 0.0 ? 1.0/DrawEpsilon : -1.0/DrawEpsilon; |
|
|
} |
|
|
else |
|
|
{ |
|
|
slope.q=dy.q/dx.q; |
|
|
inverse_slope.q=(-1.0/slope.q); |
|
|
} |
|
|
offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0))); |
|
|
offset.y=(double) (offset.x*inverse_slope.q); |
|
|
dot_product=dy.q*offset.x-dx.q*offset.y; |
|
|
if (dot_product > 0.0) |
|
|
{ |
|
|
box_p[2].x=polygon_primitive[n].point.x-offset.x; |
|
|
box_p[2].y=polygon_primitive[n].point.y-offset.y; |
|
|
box_p[3].x=polygon_primitive[i].point.x-offset.x; |
|
|
box_p[3].y=polygon_primitive[i].point.y-offset.y; |
|
|
box_q[2].x=polygon_primitive[n].point.x+offset.x; |
|
|
box_q[2].y=polygon_primitive[n].point.y+offset.y; |
|
|
box_q[3].x=polygon_primitive[i].point.x+offset.x; |
|
|
box_q[3].y=polygon_primitive[i].point.y+offset.y; |
|
|
} |
|
|
else |
|
|
{ |
|
|
box_p[2].x=polygon_primitive[n].point.x+offset.x; |
|
|
box_p[2].y=polygon_primitive[n].point.y+offset.y; |
|
|
box_p[3].x=polygon_primitive[i].point.x+offset.x; |
|
|
box_p[3].y=polygon_primitive[i].point.y+offset.y; |
|
|
box_q[2].x=polygon_primitive[n].point.x-offset.x; |
|
|
box_q[2].y=polygon_primitive[n].point.y-offset.y; |
|
|
box_q[3].x=polygon_primitive[i].point.x-offset.x; |
|
|
box_q[3].y=polygon_primitive[i].point.y-offset.y; |
|
|
} |
|
|
if (fabs((double) (slope.p-slope.q)) < DrawEpsilon) |
|
|
{ |
|
|
box_p[4]=box_p[1]; |
|
|
box_q[4]=box_q[1]; |
|
|
} |
|
|
else |
|
|
{ |
|
|
box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+ |
|
|
box_p[3].y)/(slope.p-slope.q)); |
|
|
box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y); |
|
|
box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+ |
|
|
box_q[3].y)/(slope.p-slope.q)); |
|
|
box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y); |
|
|
} |
|
|
if (q >= (ssize_t) (max_strokes-6*BezierQuantum-360)) |
|
|
{ |
|
|
if (~max_strokes < (6*BezierQuantum+360)) |
|
|
{ |
|
|
path_p=(PointInfo *) RelinquishMagickMemory(path_p); |
|
|
path_q=(PointInfo *) RelinquishMagickMemory(path_q); |
|
|
} |
|
|
else |
|
|
{ |
|
|
max_strokes+=6*BezierQuantum+360; |
|
|
path_p=(PointInfo *) ResizeQuantumMemory(path_p,max_strokes, |
|
|
sizeof(*path_p)); |
|
|
path_q=(PointInfo *) ResizeQuantumMemory(path_q,max_strokes, |
|
|
sizeof(*path_q)); |
|
|
} |
|
|
if ((path_p == (PointInfo *) NULL) || (path_q == (PointInfo *) NULL)) |
|
|
{ |
|
|
if (path_p != (PointInfo *) NULL) |
|
|
path_p=(PointInfo *) RelinquishMagickMemory(path_p); |
|
|
if (path_q != (PointInfo *) NULL) |
|
|
path_q=(PointInfo *) RelinquishMagickMemory(path_q); |
|
|
polygon_primitive=(PrimitiveInfo *) |
|
|
RelinquishMagickMemory(polygon_primitive); |
|
|
return((PrimitiveInfo *) NULL); |
|
|
} |
|
|
} |
|
|
dot_product=dx.q*dy.p-dx.p*dy.q; |
|
|
if (dot_product <= 0.0) |
|
|
switch (draw_info->linejoin) |
|
|
{ |
|
|
case BevelJoin: |
|
|
{ |
|
|
path_q[q++]=box_q[1]; |
|
|
path_q[q++]=box_q[2]; |
|
|
dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+ |
|
|
(box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y); |
|
|
if (dot_product <= miterlimit) |
|
|
path_p[p++]=box_p[4]; |
|
|
else |
|
|
{ |
|
|
path_p[p++]=box_p[1]; |
|
|
path_p[p++]=box_p[2]; |
|
|
} |
|
|
break; |
|
|
} |
|
|
case MiterJoin: |
|
|
{ |
|
|
dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+ |
|
|
(box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y); |
|
|
if (dot_product <= miterlimit) |
|
|
{ |
|
|
path_q[q++]=box_q[4]; |
|
|
path_p[p++]=box_p[4]; |
|
|
} |
|
|
else |
|
|
{ |
|
|
path_q[q++]=box_q[1]; |
|
|
path_q[q++]=box_q[2]; |
|
|
path_p[p++]=box_p[1]; |
|
|
path_p[p++]=box_p[2]; |
|
|
} |
|
|
break; |
|
|
} |
|
|
case RoundJoin: |
|
|
{ |
|
|
dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+ |
|
|
(box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y); |
|
|
if (dot_product <= miterlimit) |
|
|
path_p[p++]=box_p[4]; |
|
|
else |
|
|
{ |
|
|
path_p[p++]=box_p[1]; |
|
|
path_p[p++]=box_p[2]; |
|
|
} |
|
|
center=polygon_primitive[n].point; |
|
|
theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x); |
|
|
theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x); |
|
|
if (theta.q < theta.p) |
|
|
theta.q+=(double) (2.0*MagickPI); |
|
|
arc_segments=(size_t) ceil((double) ((theta.q-theta.p)/ |
|
|
(2.0*sqrt((double) (1.0/mid))))); |
|
|
path_q[q].x=box_q[1].x; |
|
|
path_q[q].y=box_q[1].y; |
|
|
q++; |
|
|
for (j=1; j < (ssize_t) arc_segments; j++) |
|
|
{ |
|
|
delta_theta=(double) (j*(theta.q-theta.p)/arc_segments); |
|
|
path_q[q].x=(double) (center.x+mid*cos(fmod((double) |
|
|
(theta.p+delta_theta),DegreesToRadians(360.0)))); |
|
|
path_q[q].y=(double) (center.y+mid*sin(fmod((double) |
|
|
(theta.p+delta_theta),DegreesToRadians(360.0)))); |
|
|
q++; |
|
|
} |
|
|
path_q[q++]=box_q[2]; |
|
|
break; |
|
|
} |
|
|
default: |
|
|
break; |
|
|
} |
|
|
else |
|
|
switch (draw_info->linejoin) |
|
|
{ |
|
|
case BevelJoin: |
|
|
{ |
|
|
path_p[p++]=box_p[1]; |
|
|
path_p[p++]=box_p[2]; |
|
|
dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+ |
|
|
(box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y); |
|
|
if (dot_product <= miterlimit) |
|
|
path_q[q++]=box_q[4]; |
|
|
else |
|
|
{ |
|
|
path_q[q++]=box_q[1]; |
|
|
path_q[q++]=box_q[2]; |
|
|
} |
|
|
break; |
|
|
} |
|
|
case MiterJoin: |
|
|
{ |
|
|
dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+ |
|
|
(box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y); |
|
|
if (dot_product <= miterlimit) |
|
|
{ |
|
|
path_q[q++]=box_q[4]; |
|
|
path_p[p++]=box_p[4]; |
|
|
} |
|
|
else |
|
|
{ |
|
|
path_q[q++]=box_q[1]; |
|
|
path_q[q++]=box_q[2]; |
|
|
path_p[p++]=box_p[1]; |
|
|
path_p[p++]=box_p[2]; |
|
|
} |
|
|
break; |
|
|
} |
|
|
case RoundJoin: |
|
|
{ |
|
|
dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+ |
|
|
(box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y); |
|
|
if (dot_product <= miterlimit) |
|
|
path_q[q++]=box_q[4]; |
|
|
else |
|
|
{ |
|
|
path_q[q++]=box_q[1]; |
|
|
path_q[q++]=box_q[2]; |
|
|
} |
|
|
center=polygon_primitive[n].point; |
|
|
theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x); |
|
|
theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x); |
|
|
if (theta.p < theta.q) |
|
|
theta.p+=(double) (2.0*MagickPI); |
|
|
arc_segments=(size_t) ceil((double) ((theta.p-theta.q)/ |
|
|
(2.0*sqrt((double) (1.0/mid))))); |
|
|
path_p[p++]=box_p[1]; |
|
|
for (j=1; j < (ssize_t) arc_segments; j++) |
|
|
{ |
|
|
delta_theta=(double) (j*(theta.q-theta.p)/arc_segments); |
|
|
path_p[p].x=(double) (center.x+mid*cos(fmod((double) |
|
|
(theta.p+delta_theta),DegreesToRadians(360.0)))); |
|
|
path_p[p].y=(double) (center.y+mid*sin(fmod((double) |
|
|
(theta.p+delta_theta),DegreesToRadians(360.0)))); |
|
|
p++; |
|
|
} |
|
|
path_p[p++]=box_p[2]; |
|
|
break; |
|
|
} |
|
|
default: |
|
|
break; |
|
|
} |
|
|
slope.p=slope.q; |
|
|
inverse_slope.p=inverse_slope.q; |
|
|
box_p[0]=box_p[2]; |
|
|
box_p[1]=box_p[3]; |
|
|
box_q[0]=box_q[2]; |
|
|
box_q[1]=box_q[3]; |
|
|
dx.p=dx.q; |
|
|
dy.p=dy.q; |
|
|
n=i; |
|
|
} |
|
|
path_p[p++]=box_p[1]; |
|
|
path_q[q++]=box_q[1]; |
|
|
/* |
|
|
Trace stroked polygon. |
|
|
*/ |
|
|
stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t) |
|
|
(p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon)); |
|
|
if (stroke_polygon != (PrimitiveInfo *) NULL) |
|
|
{ |
|
|
for (i=0; i < (ssize_t) p; i++) |
|
|
{ |
|
|
stroke_polygon[i]=polygon_primitive[0]; |
|
|
stroke_polygon[i].point=path_p[i]; |
|
|
} |
|
|
if (closed_path != MagickFalse) |
|
|
{ |
|
|
stroke_polygon[i]=polygon_primitive[0]; |
|
|
stroke_polygon[i].point=stroke_polygon[0].point; |
|
|
i++; |
|
|
} |
|
|
for ( ; i < (ssize_t) (p+q+closed_path); i++) |
|
|
{ |
|
|
stroke_polygon[i]=polygon_primitive[0]; |
|
|
stroke_polygon[i].point=path_q[p+q+closed_path-(i+1)]; |
|
|
} |
|
|
if (closed_path != MagickFalse) |
|
|
{ |
|
|
stroke_polygon[i]=polygon_primitive[0]; |
|
|
stroke_polygon[i].point=stroke_polygon[p+closed_path].point; |
|
|
i++; |
|
|
} |
|
|
stroke_polygon[i]=polygon_primitive[0]; |
|
|
stroke_polygon[i].point=stroke_polygon[0].point; |
|
|
i++; |
|
|
stroke_polygon[i].primitive=UndefinedPrimitive; |
|
|
stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1); |
|
|
} |
|
|
path_p=(PointInfo *) RelinquishMagickMemory(path_p); |
|
|
path_q=(PointInfo *) RelinquishMagickMemory(path_q); |
|
|
polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive); |
|
|
return(stroke_polygon); |
|
|
}
|
|
|
|
