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82 lines
2.1 KiB
82 lines
2.1 KiB
/* |
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* Copyright (C) 2011 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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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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#include "rsMatrix2x2.h" |
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#include "rsMatrix3x3.h" |
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#include "rsMatrix4x4.h" |
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#include "stdlib.h" |
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#include "string.h" |
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#include "math.h" |
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namespace android { |
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namespace renderscript { |
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void Matrix3x3::loadIdentity() { |
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m[0] = 1.f; |
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m[1] = 0.f; |
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m[2] = 0.f; |
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m[3] = 0.f; |
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m[4] = 1.f; |
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m[5] = 0.f; |
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m[6] = 0.f; |
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m[7] = 0.f; |
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m[8] = 1.f; |
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} |
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void Matrix3x3::load(const float *v) { |
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memcpy(m, v, sizeof(m)); |
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} |
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void Matrix3x3::load(const rs_matrix3x3 *v) { |
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memcpy(m, v->m, sizeof(m)); |
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} |
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void Matrix3x3::loadMultiply(const rs_matrix3x3 *lhs, const rs_matrix3x3 *rhs) { |
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// Use a temporary variable to support the case where one of the inputs |
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// is also the destination, e.g. left.loadMultiply(left, right); |
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Matrix3x3 temp; |
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for (int i=0 ; i<3 ; i++) { |
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float ri0 = 0; |
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float ri1 = 0; |
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float ri2 = 0; |
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for (int j=0 ; j<3 ; j++) { |
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const float rhs_ij = ((const Matrix3x3 *)rhs)->get(i, j); |
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ri0 += ((const Matrix3x3 *)lhs)->get(j, 0) * rhs_ij; |
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ri1 += ((const Matrix3x3 *)lhs)->get(j, 1) * rhs_ij; |
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ri2 += ((const Matrix3x3 *)lhs)->get(j, 2) * rhs_ij; |
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} |
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temp.set(i, 0, ri0); |
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temp.set(i, 1, ri1); |
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temp.set(i, 2, ri2); |
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} |
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load(&temp); |
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} |
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void Matrix3x3::transpose() { |
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int i, j; |
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float temp; |
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for (i = 0; i < 2; ++i) { |
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for (j = i + 1; j < 3; ++j) { |
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temp = get(i, j); |
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set(i, j, get(j, i)); |
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set(j, i, temp); |
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} |
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} |
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} |
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} // namespace renderscript |
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} // namespace android
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