Revision fa8bc998
Added by Leszek Koltunski about 4 years ago
| src/main/java/org/distorted/library/effect/MatrixEffect.java | ||
|---|---|---|
| 19 | 19 |
|
| 20 | 20 |
package org.distorted.library.effect; |
| 21 | 21 |
|
| 22 |
import android.opengl.Matrix; |
|
| 23 |
|
|
| 22 | 24 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 23 | 25 |
/** |
| 24 | 26 |
* Abstract class that represents an Effect that works by modifying the ModelView matrix. |
| ... | ... | |
| 30 | 32 |
*/ |
| 31 | 33 |
public static final int NUM_UNIFORMS = 7; |
| 32 | 34 |
|
| 35 |
private float[] mMatrix,mTmpArray; |
|
| 36 |
|
|
| 33 | 37 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 34 | 38 |
/** |
| 35 | 39 |
* Only for use by the library itself. |
| ... | ... | |
| 38 | 42 |
*/ |
| 39 | 43 |
public abstract void apply(float[] matrix, float[] uniforms, int index); |
| 40 | 44 |
|
| 45 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 46 |
/** |
|
| 47 |
* Only for use by the library itself. |
|
| 48 |
* <p> |
|
| 49 |
* The three values buffer[index], buffer[index+1], buffer[index+2] are assumed to contain the |
|
| 50 |
* x,y,z coordinates of a point. We apply this Matrix effect to this point and overwrite those |
|
| 51 |
* three values. |
|
| 52 |
* |
|
| 53 |
* This is on purpose a static evaluation - if this Effect contains any Dynamics, they will be |
|
| 54 |
* evaluated at 0. |
|
| 55 |
* |
|
| 56 |
* @y.exclude |
|
| 57 |
*/ |
|
| 58 |
public void applyToPoint(float[] buffer, int index) |
|
| 59 |
{
|
|
| 60 |
Matrix.setIdentityM(mMatrix,0); |
|
| 61 |
compute(mTmpArray,0,0,0); |
|
| 62 |
apply(mMatrix, mTmpArray, 0); |
|
| 63 |
|
|
| 64 |
float x = buffer[index ]; |
|
| 65 |
float y = buffer[index+1]; |
|
| 66 |
float z = buffer[index+2]; |
|
| 67 |
|
|
| 68 |
buffer[index ] = mMatrix[0]*x + mMatrix[4]*y + mMatrix[ 8]*z + mMatrix[12]; |
|
| 69 |
buffer[index+1] = mMatrix[1]*x + mMatrix[5]*y + mMatrix[ 9]*z + mMatrix[13]; |
|
| 70 |
buffer[index+2] = mMatrix[2]*x + mMatrix[6]*y + mMatrix[10]*z + mMatrix[14]; |
|
| 71 |
} |
|
| 72 |
|
|
| 73 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 74 |
/** |
|
| 75 |
* Only for use by the library itself. |
|
| 76 |
* <p> |
|
| 77 |
* The three values buffer[index], buffer[index+1], buffer[index+2] are assumed to contain the |
|
| 78 |
* x,y,z coordinates of a vector. We apply this Matrix effect to this vector and overwrite those |
|
| 79 |
* three values. |
|
| 80 |
* |
|
| 81 |
* This is on purpose a static evaluation - if this Effect contains any Dynamics, they will be |
|
| 82 |
* evaluated at 0. |
|
| 83 |
* |
|
| 84 |
* @y.exclude |
|
| 85 |
*/ |
|
| 86 |
public void applyToVector(float[] buffer, int index) |
|
| 87 |
{
|
|
| 88 |
Matrix.setIdentityM(mMatrix,0); |
|
| 89 |
compute(mTmpArray,0,0,0); |
|
| 90 |
apply(mMatrix, mTmpArray, 0); |
|
| 91 |
|
|
| 92 |
float x = buffer[index ]; |
|
| 93 |
float y = buffer[index+1]; |
|
| 94 |
float z = buffer[index+2]; |
|
| 95 |
|
|
| 96 |
buffer[index ] = mMatrix[0]*x + mMatrix[4]*y + mMatrix[ 8]*z; |
|
| 97 |
buffer[index+1] = mMatrix[1]*x + mMatrix[5]*y + mMatrix[ 9]*z; |
|
| 98 |
buffer[index+2] = mMatrix[2]*x + mMatrix[6]*y + mMatrix[10]*z; |
|
| 99 |
} |
|
| 100 |
|
|
| 101 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 102 |
/** |
|
| 103 |
* Only for use by the library itself. |
|
| 104 |
* <p> |
|
| 105 |
* The 9 floats starting at buffer[index] are assumed to contain info about a vertex arranged in |
|
| 106 |
* MeshBase way, i.e. coord point (x,y,z) ; normal vector (x,y,z) ; inflate vector (x,y,z) |
|
| 107 |
* |
|
| 108 |
* @y.exclude |
|
| 109 |
*/ |
|
| 110 |
public void applyToVertex(float[] buffer, int index) |
|
| 111 |
{
|
|
| 112 |
float x,y,z; |
|
| 113 |
|
|
| 114 |
Matrix.setIdentityM(mMatrix,0); |
|
| 115 |
compute(mTmpArray,0,0,0); |
|
| 116 |
apply(mMatrix, mTmpArray, 0); |
|
| 117 |
|
|
| 118 |
x = buffer[index ]; |
|
| 119 |
y = buffer[index+1]; |
|
| 120 |
z = buffer[index+2]; |
|
| 121 |
|
|
| 122 |
buffer[index ] = mMatrix[0]*x + mMatrix[4]*y + mMatrix[ 8]*z + mMatrix[12]; |
|
| 123 |
buffer[index+1] = mMatrix[1]*x + mMatrix[5]*y + mMatrix[ 9]*z + mMatrix[13]; |
|
| 124 |
buffer[index+2] = mMatrix[2]*x + mMatrix[6]*y + mMatrix[10]*z + mMatrix[14]; |
|
| 125 |
|
|
| 126 |
x = buffer[index+3]; |
|
| 127 |
y = buffer[index+4]; |
|
| 128 |
z = buffer[index+5]; |
|
| 129 |
|
|
| 130 |
buffer[index+3] = mMatrix[0]*x + mMatrix[4]*y + mMatrix[ 8]*z; |
|
| 131 |
buffer[index+4] = mMatrix[1]*x + mMatrix[5]*y + mMatrix[ 9]*z; |
|
| 132 |
buffer[index+5] = mMatrix[2]*x + mMatrix[6]*y + mMatrix[10]*z; |
|
| 133 |
|
|
| 134 |
x = buffer[index+6]; |
|
| 135 |
y = buffer[index+7]; |
|
| 136 |
z = buffer[index+8]; |
|
| 137 |
|
|
| 138 |
buffer[index+6] = mMatrix[0]*x + mMatrix[4]*y + mMatrix[ 8]*z; |
|
| 139 |
buffer[index+7] = mMatrix[1]*x + mMatrix[5]*y + mMatrix[ 9]*z; |
|
| 140 |
buffer[index+8] = mMatrix[2]*x + mMatrix[6]*y + mMatrix[10]*z; |
|
| 141 |
} |
|
| 142 |
|
|
| 41 | 143 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 42 | 144 |
// empty function for completeness |
| 43 | 145 |
|
| ... | ... | |
| 51 | 153 |
MatrixEffect(EffectName name) |
| 52 | 154 |
{
|
| 53 | 155 |
super(name); |
| 156 |
|
|
| 157 |
mMatrix = new float[16]; |
|
| 158 |
mTmpArray= new float[4]; |
|
| 54 | 159 |
} |
| 55 | 160 |
} |
Also available in: Unified diff
New API MeshBase.apply(MatrixEffect[])