1 |
1dec66e0
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
2 |
|
|
// Copyright 2023 Leszek Koltunski leszek@koltunski.pl //
|
3 |
|
|
// //
|
4 |
|
|
// This file is part of Distorted. //
|
5 |
|
|
// //
|
6 |
|
|
// This library is free software; you can redistribute it and/or //
|
7 |
|
|
// modify it under the terms of the GNU Lesser General Public //
|
8 |
|
|
// License as published by the Free Software Foundation; either //
|
9 |
|
|
// version 2.1 of the License, or (at your option) any later version. //
|
10 |
|
|
// //
|
11 |
|
|
// This library is distributed in the hope that it will be useful, //
|
12 |
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
13 |
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
|
14 |
|
|
// Lesser General Public License for more details. //
|
15 |
|
|
// //
|
16 |
|
|
// You should have received a copy of the GNU Lesser General Public //
|
17 |
|
|
// License along with this library; if not, write to the Free Software //
|
18 |
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA //
|
19 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
20 |
|
|
|
21 |
|
|
package org.distorted.library.helpers;
|
22 |
|
|
|
23 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
24 |
|
|
|
25 |
|
|
public class MatrixHelper
|
26 |
|
|
{
|
27 |
|
|
public static void setIdentity(float[] output)
|
28 |
|
|
{
|
29 |
|
|
output[ 0] = 1;
|
30 |
|
|
output[ 1] = 0;
|
31 |
|
|
output[ 2] = 0;
|
32 |
|
|
output[ 3] = 0;
|
33 |
|
|
output[ 4] = 0;
|
34 |
|
|
output[ 5] = 1;
|
35 |
|
|
output[ 6] = 0;
|
36 |
|
|
output[ 7] = 0;
|
37 |
|
|
output[ 8] = 0;
|
38 |
|
|
output[ 9] = 0;
|
39 |
|
|
output[10] = 1;
|
40 |
|
|
output[11] = 0;
|
41 |
|
|
output[12] = 0;
|
42 |
|
|
output[13] = 0;
|
43 |
|
|
output[14] = 0;
|
44 |
|
|
output[15] = 1;
|
45 |
|
|
}
|
46 |
|
|
|
47 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
48 |
|
|
|
49 |
|
|
public static void multiply(float[] output, float[] m1, float[] m2)
|
50 |
|
|
{
|
51 |
|
|
output[ 0] = m1[ 0]*m2[ 0] + m1[ 4]*m2[ 1] + m1[ 8]*m2[ 2] + m1[12]*m2[ 3];
|
52 |
|
|
output[ 1] = m1[ 1]*m2[ 0] + m1[ 5]*m2[ 1] + m1[ 9]*m2[ 2] + m1[13]*m2[ 3];
|
53 |
|
|
output[ 2] = m1[ 2]*m2[ 0] + m1[ 6]*m2[ 1] + m1[10]*m2[ 2] + m1[14]*m2[ 3];
|
54 |
|
|
output[ 3] = m1[ 3]*m2[ 0] + m1[ 7]*m2[ 1] + m1[11]*m2[ 2] + m1[15]*m2[ 3];
|
55 |
|
|
|
56 |
|
|
output[ 4] = m1[ 0]*m2[ 4] + m1[ 4]*m2[ 5] + m1[ 8]*m2[ 6] + m1[12]*m2[ 7];
|
57 |
|
|
output[ 5] = m1[ 1]*m2[ 4] + m1[ 5]*m2[ 5] + m1[ 9]*m2[ 6] + m1[13]*m2[ 7];
|
58 |
|
|
output[ 6] = m1[ 2]*m2[ 4] + m1[ 6]*m2[ 5] + m1[10]*m2[ 6] + m1[14]*m2[ 7];
|
59 |
|
|
output[ 7] = m1[ 3]*m2[ 4] + m1[ 7]*m2[ 5] + m1[11]*m2[ 6] + m1[15]*m2[ 7];
|
60 |
|
|
|
61 |
|
|
output[ 8] = m1[ 0]*m2[ 8] + m1[ 4]*m2[ 9] + m1[ 8]*m2[10] + m1[12]*m2[11];
|
62 |
|
|
output[ 9] = m1[ 1]*m2[ 8] + m1[ 5]*m2[ 9] + m1[ 9]*m2[10] + m1[13]*m2[11];
|
63 |
|
|
output[10] = m1[ 2]*m2[ 8] + m1[ 6]*m2[ 9] + m1[10]*m2[10] + m1[14]*m2[11];
|
64 |
|
|
output[11] = m1[ 3]*m2[ 8] + m1[ 7]*m2[ 9] + m1[11]*m2[10] + m1[15]*m2[11];
|
65 |
|
|
|
66 |
|
|
output[12] = m1[ 0]*m2[12] + m1[ 4]*m2[13] + m1[ 8]*m2[14] + m1[12]*m2[15];
|
67 |
|
|
output[13] = m1[ 1]*m2[12] + m1[ 5]*m2[13] + m1[ 9]*m2[14] + m1[13]*m2[15];
|
68 |
|
|
output[14] = m1[ 2]*m2[12] + m1[ 6]*m2[13] + m1[10]*m2[14] + m1[14]*m2[15];
|
69 |
|
|
output[15] = m1[ 3]*m2[12] + m1[ 7]*m2[13] + m1[11]*m2[14] + m1[15]*m2[15];
|
70 |
|
|
}
|
71 |
|
|
|
72 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
73 |
|
|
|
74 |
|
|
public static void frustum(float[] output, float l, float r, float b, float t, float n, float f)
|
75 |
|
|
{
|
76 |
|
|
output[0] = 2 * n / (r - l);
|
77 |
|
|
output[1] = 0;
|
78 |
|
|
output[2] = 0;
|
79 |
|
|
output[3] = 0;
|
80 |
|
|
output[4] = 0;
|
81 |
|
|
output[5] = 2 * n / (t - b);
|
82 |
|
|
output[6] = 0;
|
83 |
|
|
output[7] = 0;
|
84 |
|
|
output[8] = (r + l) / (r - l);
|
85 |
|
|
output[9] = (t + b) / (t - b);
|
86 |
|
|
output[10] = -(f + n) / (f - n);
|
87 |
|
|
output[11] = -1;
|
88 |
|
|
output[12] = 0;
|
89 |
|
|
output[13] = 0;
|
90 |
|
|
output[14] = -(2 * f * n) / (f - n);
|
91 |
|
|
output[15] = 0;
|
92 |
|
|
}
|
93 |
|
|
|
94 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
95 |
|
|
|
96 |
|
|
public static void ortho(float[] output, float l, float r, float b, float t, float n, float f)
|
97 |
|
|
{
|
98 |
|
|
output[0] = 2 / (r - l);
|
99 |
|
|
output[1] = 0;
|
100 |
|
|
output[2] = 0;
|
101 |
|
|
output[3] = 0;
|
102 |
|
|
output[4] = 0;
|
103 |
|
|
output[5] = 2 / (t - b);
|
104 |
|
|
output[6] = 0;
|
105 |
|
|
output[7] = 0;
|
106 |
|
|
output[8] = 0;
|
107 |
|
|
output[9] = 0;
|
108 |
|
|
output[10] = -2 / (f - n);
|
109 |
|
|
output[11] = 0;
|
110 |
|
|
output[12] = -(r + l) / (r - l);
|
111 |
|
|
output[13] = -(t + b) / (t - b);
|
112 |
|
|
output[14] = -(f + n) / (f - n);
|
113 |
|
|
output[15] = 1;
|
114 |
|
|
}
|
115 |
|
|
|
116 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
117 |
|
|
|
118 |
|
|
public static void setLookAt(float[] output, float eyeX , float eyeY , float eyeZ ,
|
119 |
|
|
float lookX, float lookY, float lookZ,
|
120 |
|
|
float upX , float upY , float upZ )
|
121 |
|
|
{
|
122 |
|
|
// TODO
|
123 |
|
|
}
|
124 |
|
|
|
125 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
126 |
|
|
|
127 |
|
|
public static void rotate(float[] output, float angle, float axisX, float axisY, float axisZ)
|
128 |
|
|
{
|
129 |
|
|
android.opengl.Matrix.rotateM(output,0,angle,axisX,axisY,axisZ);
|
130 |
|
|
}
|
131 |
|
|
|
132 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
133 |
|
|
|
134 |
|
|
public static void translate(float[] output, float dx, float dy, float dz)
|
135 |
|
|
{
|
136 |
|
|
output[12] += ( output[ 0]*dx + output[ 4]*dy + output[ 8]*dz);
|
137 |
|
|
output[13] += ( output[ 1]*dx + output[ 5]*dy + output[ 9]*dz);
|
138 |
|
|
output[14] += ( output[ 2]*dx + output[ 6]*dy + output[10]*dz);
|
139 |
|
|
output[15] += ( output[ 3]*dx + output[ 7]*dy + output[11]*dz);
|
140 |
|
|
}
|
141 |
|
|
|
142 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
143 |
|
|
|
144 |
|
|
public static void scale(float[] output, float sx, float sy, float sz)
|
145 |
|
|
{
|
146 |
|
|
output[ 0] *= sx;
|
147 |
|
|
output[ 1] *= sx;
|
148 |
|
|
output[ 2] *= sx;
|
149 |
|
|
output[ 3] *= sx;
|
150 |
|
|
|
151 |
|
|
output[ 4] *= sy;
|
152 |
|
|
output[ 5] *= sy;
|
153 |
|
|
output[ 6] *= sy;
|
154 |
|
|
output[ 7] *= sy;
|
155 |
|
|
|
156 |
|
|
output[ 8] *= sz;
|
157 |
|
|
output[ 9] *= sz;
|
158 |
|
|
output[10] *= sz;
|
159 |
|
|
output[11] *= sz;
|
160 |
|
|
}
|
161 |
|
|
}
|