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 {
getMatrix4x428     float get(uint32_t col, uint32_t row) const {
29         return m[col*4 + row];
30     }
31 
setMatrix4x432     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 
multiplyMatrix4x461     void multiply(const rs_matrix4x4 *rhs) {
62         loadMultiply(this, rhs);
63     }
rotateMatrix4x464     void rotate(float rot, float x, float y, float z) {
65         Matrix4x4 tmp;
66         tmp.loadRotate(rot, x, y, z);
67         multiply(&tmp);
68     }
scaleMatrix4x469     void scale(float x, float y, float z) {
70         Matrix4x4 tmp;
71         tmp.loadScale(x, y, z);
72         multiply(&tmp);
73     }
translateMatrix4x474     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