64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
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/*
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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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using namespace android;
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using namespace android::renderscript;
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void Matrix2x2::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] = 1.f;
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}
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void Matrix2x2::load(const float *v) {
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memcpy(m, v, sizeof(m));
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}
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void Matrix2x2::load(const rs_matrix2x2 *v) {
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memcpy(m, v->m, sizeof(m));
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}
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void Matrix2x2::loadMultiply(const rs_matrix2x2 *lhs, const rs_matrix2x2 *rhs) {
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for (int i=0 ; i<2 ; i++) {
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float ri0 = 0;
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float ri1 = 0;
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for (int j=0 ; j<2 ; j++) {
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const float rhs_ij = ((const Matrix2x2 *)rhs)->get(i, j);
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ri0 += ((const Matrix2x2 *)lhs)->get(j, 0) * rhs_ij;
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ri1 += ((const Matrix2x2 *)lhs)->get(j, 1) * rhs_ij;
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}
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set(i, 0, ri0);
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set(i, 1, ri1);
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}
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}
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void Matrix2x2::transpose() {
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float temp = m[1];
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m[1] = m[2];
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m[2] = temp;
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}
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