You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.8 KiB
69 lines
1.8 KiB
/*
|
|
* 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"
|
|
|
|
namespace android {
|
|
namespace 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) {
|
|
// Use a temporary variable to support the case where one of the inputs
|
|
// is also the destination, e.g. left.loadMultiply(left, right);
|
|
Matrix2x2 temp;
|
|
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;
|
|
}
|
|
temp.set(i, 0, ri0);
|
|
temp.set(i, 1, ri1);
|
|
}
|
|
load(&temp);
|
|
}
|
|
|
|
void Matrix2x2::transpose() {
|
|
float temp = m[1];
|
|
m[1] = m[2];
|
|
m[2] = temp;
|
|
}
|
|
|
|
} // namespace renderscript
|
|
} // namespace android
|