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      1 /*
      2  * Copyright (C) 2009-2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_RS_MATRIX_4x4_H
     18 #define ANDROID_RS_MATRIX_4x4_H
     19 
     20 #include "rsType.h"
     21 
     22 
     23 // ---------------------------------------------------------------------------
     24 namespace android {
     25 namespace renderscript {
     26 
     27 struct Matrix4x4 : public rs_matrix4x4 {
     28     float get(uint32_t col, uint32_t row) const {
     29         return m[col*4 + row];
     30     }
     31 
     32     void set(uint32_t col, uint32_t row, float v) {
     33         m[col*4 + row] = v;
     34     }
     35 
     36     void loadIdentity();
     37     void load(const float *);
     38     void load(const rs_matrix4x4 *);
     39     void load(const rs_matrix3x3 *);
     40     void load(const rs_matrix2x2 *);
     41 
     42     void loadRotate(float rot, float x, float y, float z);
     43     void loadScale(float x, float y, float z);
     44     void loadTranslate(float x, float y, float z);
     45     void loadMultiply(const rs_matrix4x4 *lhs, const rs_matrix4x4 *rhs);
     46 
     47     void loadOrtho(float l, float r, float b, float t, float n, float f);
     48     void loadFrustum(float l, float r, float b, float t, float n, float f);
     49     void loadPerspective(float fovy, float aspect, float near, float far);
     50 
     51     // Note: This assumes that the input vector (in) is of length 3.
     52     void vectorMultiply(float *v4out, const float *v3in) const;
     53 
     54     bool inverse();
     55     bool inverseTranspose();
     56     void transpose();
     57 
     58     void logv(const char *s) const;
     59 
     60 
     61     void multiply(const rs_matrix4x4 *rhs) {
     62         loadMultiply(this, rhs);
     63     }
     64     void rotate(float rot, float x, float y, float z) {
     65         Matrix4x4 tmp;
     66         tmp.loadRotate(rot, x, y, z);
     67         multiply(&tmp);
     68     }
     69     void scale(float x, float y, float z) {
     70         Matrix4x4 tmp;
     71         tmp.loadScale(x, y, z);
     72         multiply(&tmp);
     73     }
     74     void translate(float x, float y, float z) {
     75         Matrix4x4 tmp;
     76         tmp.loadTranslate(x, y, z);
     77         multiply(&tmp);
     78     }
     79 };
     80 
     81 } // namespace renderscript
     82 } // namespace android
     83 
     84 #endif  // ANDROID_RS_MATRIX_4x4_H
     85