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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "rsMatrix2x2.h"
#include "rsMatrix3x3.h"
#include "rsMatrix4x4.h"
#include "stdlib.h"
#include "string.h"
#include "math.h"
using namespace android;
using namespace android::renderscript;
void Matrix2x2::loadIdentity() {
m[0] = 1.f;
m[1] = 0.f;
m[2] = 0.f;
m[3] = 1.f;
}
void Matrix2x2::load(const float *v) {
memcpy(m, v, sizeof(m));
}
void Matrix2x2::load(const rs_matrix2x2 *v) {
memcpy(m, v->m, sizeof(m));
}
void Matrix2x2::loadMultiply(const rs_matrix2x2 *lhs, const rs_matrix2x2 *rhs) {
for (int i=0 ; i<2 ; i++) {
float ri0 = 0;
float ri1 = 0;
for (int j=0 ; j<2 ; j++) {
const float rhs_ij = ((const Matrix2x2 *)rhs)->get(i, j);
ri0 += ((const Matrix2x2 *)lhs)->get(j, 0) * rhs_ij;
ri1 += ((const Matrix2x2 *)lhs)->get(j, 1) * rhs_ij;
}
set(i, 0, ri0);
set(i, 1, ri1);
}
}
void Matrix2x2::transpose() {
float temp = m[1];
m[1] = m[2];
m[2] = temp;
}
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