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107 lines
3.5 KiB
107 lines
3.5 KiB
/* |
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* Copyright 2015 Google Inc. |
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* |
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* Use of this source code is governed by a BSD-style license that can be |
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* found in the LICENSE file. |
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*/ |
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#include "DecodeFile.h" |
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#include "Sample.h" |
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#include "Resources.h" |
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#include "SkCanvas.h" |
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#include "SkLightingShader.h" |
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#include "SkNormalSource.h" |
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#include "SkPoint3.h" |
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static sk_sp<SkLights> create_lights(SkScalar angle, SkScalar blue) { |
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const SkVector3 dir = SkVector3::Make(SkScalarSin(angle)*SkScalarSin(SK_ScalarPI*0.25f), |
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SkScalarCos(angle)*SkScalarSin(SK_ScalarPI*0.25f), |
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SkScalarCos(SK_ScalarPI*0.25f)); |
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SkLights::Builder builder; |
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builder.add(SkLights::Light::MakeDirectional(SkColor3f::Make(1.0f, 1.0f, blue), dir)); |
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builder.setAmbientLightColor(SkColor3f::Make(0.1f, 0.1f, 0.1f)); |
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return builder.finish(); |
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} |
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//////////////////////////////////////////////////////////////////////////// |
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class LightingView : public Sample { |
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public: |
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LightingView() : fLightAngle(0.0f) , fColorFactor(0.0f) { |
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{ |
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SkBitmap diffuseBitmap; |
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SkAssertResult(GetResourceAsBitmap("images/brickwork-texture.jpg", &diffuseBitmap)); |
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fRect = SkRect::MakeIWH(diffuseBitmap.width(), diffuseBitmap.height()); |
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fDiffuseShader = SkShader::MakeBitmapShader(diffuseBitmap, |
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SkShader::kClamp_TileMode, |
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SkShader::kClamp_TileMode, |
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nullptr); |
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} |
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{ |
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SkBitmap normalBitmap; |
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SkAssertResult(GetResourceAsBitmap("images/brickwork_normal-map.jpg", &normalBitmap)); |
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sk_sp<SkShader> normalMap = SkShader::MakeBitmapShader(normalBitmap, |
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SkShader::kClamp_TileMode, |
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SkShader::kClamp_TileMode, |
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nullptr); |
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fNormalSource = SkNormalSource::MakeFromNormalMap(std::move(normalMap), SkMatrix::I()); |
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} |
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} |
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protected: |
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bool onQuery(Sample::Event* evt) override { |
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if (Sample::TitleQ(*evt)) { |
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Sample::TitleR(evt, "Lighting"); |
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return true; |
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} |
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return this->INHERITED::onQuery(evt); |
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} |
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void onDrawContent(SkCanvas* canvas) override { |
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sk_sp<SkLights> lights(create_lights(fLightAngle, fColorFactor)); |
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SkPaint paint; |
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paint.setShader(SkLightingShader::Make(fDiffuseShader, |
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fNormalSource, |
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std::move(lights))); |
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paint.setColor(SK_ColorBLACK); |
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canvas->drawRect(fRect, paint); |
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} |
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Sample::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override { |
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return this->INHERITED::onFindClickHandler(x, y, modi); |
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} |
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bool onAnimate(const SkAnimTimer& timer) override { |
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fLightAngle += 0.015f; |
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fColorFactor += 0.01f; |
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if (fColorFactor > 1.0f) { |
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fColorFactor = 0.0f; |
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} |
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return true; |
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} |
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private: |
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SkRect fRect; |
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sk_sp<SkShader> fDiffuseShader; |
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sk_sp<SkNormalSource> fNormalSource; |
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SkScalar fLightAngle; |
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SkScalar fColorFactor; |
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typedef Sample INHERITED; |
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}; |
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////////////////////////////////////////////////////////////////////////////// |
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DEF_SAMPLE( return new LightingView(); )
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