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| Rev | Author | Line No. | Line |
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| 108 | chris | 1 | package com.gebauz.pingK.common.framework; |
| 2 | |||
| 3 | import java.nio.ByteBuffer; |
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| 4 | import java.nio.ByteOrder; |
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| 5 | import java.nio.FloatBuffer; |
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| 6 | import java.nio.ShortBuffer; |
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| 7 | |||
| 8 | import javax.microedition.khronos.opengles.GL10; |
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| 9 | |||
| 10 | /** |
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| 11 | * Simple Mesh class. |
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| 12 | * @author chiu |
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| 13 | * |
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| 14 | */ |
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| 15 | public class Mesh |
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| 16 | { |
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| 17 | /** |
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| 18 | * Helper class to fill an array with vertex information |
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| 19 | * |
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| 20 | */ |
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| 21 | public static class AttributeArray |
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| 22 | { |
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| 23 | private float[] mAttributeArray; |
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| 24 | private int mCurrentIndex = 0; |
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| 25 | |||
| 26 | public AttributeArray(int size) |
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| 27 | { |
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| 28 | mAttributeArray = new float[size]; |
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| 29 | mCurrentIndex = 0; |
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| 30 | } |
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| 31 | |||
| 32 | public void fill(float x) |
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| 33 | { |
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| 34 | mAttributeArray[mCurrentIndex] = x; mCurrentIndex++; |
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| 35 | } |
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| 36 | |||
| 37 | public void fill(float x, float y) |
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| 38 | { |
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| 39 | mAttributeArray[mCurrentIndex] = x; mCurrentIndex++; |
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| 40 | mAttributeArray[mCurrentIndex] = y; mCurrentIndex++; |
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| 41 | } |
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| 42 | |||
| 43 | public void fill(float x, float y, float z) |
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| 44 | { |
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| 45 | mAttributeArray[mCurrentIndex] = x; mCurrentIndex++; |
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| 46 | mAttributeArray[mCurrentIndex] = y; mCurrentIndex++; |
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| 47 | mAttributeArray[mCurrentIndex] = z; mCurrentIndex++; |
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| 48 | } |
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| 49 | |||
| 50 | public void fill(float x, float y, float z, float w) |
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| 51 | { |
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| 52 | mAttributeArray[mCurrentIndex] = x; mCurrentIndex++; |
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| 53 | mAttributeArray[mCurrentIndex] = y; mCurrentIndex++; |
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| 54 | mAttributeArray[mCurrentIndex] = z; mCurrentIndex++; |
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| 55 | mAttributeArray[mCurrentIndex] = w; mCurrentIndex++; |
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| 56 | } |
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| 57 | |||
| 58 | public float[] getAttributeArray() |
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| 59 | { |
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| 60 | return mAttributeArray; |
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| 61 | } |
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| 62 | |||
| 63 | public int getUsedCount() |
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| 64 | { |
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| 65 | return mCurrentIndex; |
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| 66 | } |
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| 67 | } |
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| 68 | |||
| 69 | public class AttributeBuffer |
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| 70 | { |
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| 71 | public ByteBuffer byteBuffer; |
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| 72 | public FloatBuffer floatBuffer; |
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| 73 | public int length; |
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| 74 | |||
| 75 | public AttributeBuffer() |
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| 76 | { |
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| 77 | } |
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| 78 | |||
| 79 | public AttributeBuffer(float data[]) |
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| 80 | { |
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| 81 | setData(data); |
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| 82 | } |
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| 83 | |||
| 84 | public void setData(float data[]) |
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| 85 | { |
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| 86 | byteBuffer = ByteBuffer.allocateDirect(data.length * 4); |
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| 87 | byteBuffer.order(ByteOrder.nativeOrder()); |
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| 88 | floatBuffer = byteBuffer.asFloatBuffer(); |
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| 89 | floatBuffer.put(data); |
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| 90 | floatBuffer.position(0); |
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| 91 | length = data.length; |
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| 92 | } |
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| 93 | } |
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| 94 | |||
| 95 | public class IndexBuffer |
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| 96 | { |
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| 97 | public ByteBuffer byteBuffer; |
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| 98 | public ShortBuffer shortBuffer; |
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| 99 | public int length; |
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| 100 | |||
| 101 | public IndexBuffer() |
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| 102 | { |
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| 103 | } |
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| 104 | |||
| 105 | public IndexBuffer(short data[]) |
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| 106 | { |
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| 107 | setData(data); |
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| 108 | } |
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| 109 | |||
| 110 | public void setData(short data[]) |
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| 111 | { |
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| 112 | byteBuffer = ByteBuffer.allocateDirect(data.length * 2); |
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| 113 | byteBuffer.order(ByteOrder.nativeOrder()); |
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| 114 | shortBuffer = byteBuffer.asShortBuffer(); |
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| 115 | shortBuffer.put(data); |
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| 116 | shortBuffer.position(0); |
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| 117 | length = data.length; |
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| 118 | } |
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| 119 | } |
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| 120 | |||
| 121 | AttributeBuffer vertexBuffer = null; |
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| 122 | AttributeBuffer colorBuffer = null; |
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| 123 | AttributeBuffer normalBuffer = null; |
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| 124 | AttributeBuffer texCoordBuffer = null; |
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| 125 | IndexBuffer indexBuffer = null; |
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| 126 | |||
| 127 | public static final int COORD_ELEMENTS_COUNT = 3; |
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| 128 | public static final int COLOR_ELEMENTS_COUNT = 4; |
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| 129 | public static final int TEX_COORD_ELEMENTS_COUNT = 2; |
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| 130 | public static final int NORMAL_ELEMENTS_COUNT = 3; |
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| 131 | |||
| 132 | private int mPrimitiveType = GL10.GL_TRIANGLES; |
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| 133 | |||
| 134 | public Mesh() |
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| 135 | { |
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| 136 | |||
| 137 | } |
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| 138 | |||
| 139 | public void setVertices(float vertices[]) |
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| 140 | { |
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| 141 | if (vertices == null) |
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| 142 | { |
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| 143 | vertexBuffer = null; |
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| 144 | return; |
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| 145 | } |
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| 146 | |||
| 147 | vertexBuffer = new AttributeBuffer(vertices); |
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| 148 | } |
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| 149 | |||
| 150 | public void setColors(float colors[]) |
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| 151 | { |
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| 152 | if (colors == null) |
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| 153 | { |
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| 154 | colorBuffer = null; |
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| 155 | return; |
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| 156 | } |
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| 157 | |||
| 158 | colorBuffer = new AttributeBuffer(colors); |
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| 159 | } |
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| 160 | |||
| 161 | public void setNormals(float normals[]) |
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| 162 | { |
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| 163 | if (normals == null) |
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| 164 | { |
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| 165 | normalBuffer = null; |
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| 166 | return; |
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| 167 | } |
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| 168 | |||
| 169 | normalBuffer = new AttributeBuffer(normals); |
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| 170 | } |
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| 171 | |||
| 172 | public void setTexCoords(float texCoords[]) |
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| 173 | { |
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| 174 | if (texCoords == null) |
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| 175 | { |
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| 176 | texCoordBuffer = null; |
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| 177 | return; |
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| 178 | } |
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| 179 | |||
| 180 | texCoordBuffer = new AttributeBuffer(texCoords); |
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| 181 | } |
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| 182 | |||
| 183 | public void setIndices(short indices[]) |
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| 184 | { |
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| 185 | if (indices == null) |
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| 186 | { |
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| 187 | indexBuffer = null; |
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| 188 | return; |
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| 189 | } |
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| 190 | |||
| 191 | indexBuffer = new IndexBuffer(indices); |
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| 192 | } |
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| 193 | |||
| 194 | public void setVertex(int index, Vector3 vertex) |
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| 195 | { |
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| 196 | vertexBuffer.floatBuffer.put(index * COORD_ELEMENTS_COUNT + 0, vertex.x); |
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| 197 | vertexBuffer.floatBuffer.put(index * COORD_ELEMENTS_COUNT + 1, vertex.y); |
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| 198 | vertexBuffer.floatBuffer.put(index * COORD_ELEMENTS_COUNT + 2, vertex.z); |
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| 199 | } |
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| 200 | |||
| 201 | public Vector3 getVertex(int index) |
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| 202 | { |
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| 203 | return new Vector3( |
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| 204 | vertexBuffer.floatBuffer.get(index * COORD_ELEMENTS_COUNT + 0), |
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| 205 | vertexBuffer.floatBuffer.get(index * COORD_ELEMENTS_COUNT + 1), |
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| 206 | vertexBuffer.floatBuffer.get(index * COORD_ELEMENTS_COUNT + 2)); |
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| 207 | } |
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| 208 | |||
| 209 | public int getVertexCount() |
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| 210 | { |
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| 211 | return vertexBuffer.floatBuffer.limit() / COORD_ELEMENTS_COUNT; |
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| 212 | } |
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| 213 | |||
| 214 | public void setColor(int index, Vector4 color) |
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| 215 | { |
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| 216 | colorBuffer.floatBuffer.put(index * COLOR_ELEMENTS_COUNT + 0, color.x); |
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| 217 | colorBuffer.floatBuffer.put(index * COLOR_ELEMENTS_COUNT + 1, color.y); |
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| 218 | colorBuffer.floatBuffer.put(index * COLOR_ELEMENTS_COUNT + 2, color.z); |
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| 219 | colorBuffer.floatBuffer.put(index * COLOR_ELEMENTS_COUNT + 3, color.w); |
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| 220 | } |
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| 221 | |||
| 222 | public int getColorCount() |
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| 223 | { |
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| 224 | return colorBuffer.floatBuffer.limit() / COLOR_ELEMENTS_COUNT; |
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| 225 | } |
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| 226 | |||
| 227 | public Vector4 getColor(int index) |
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| 228 | { |
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| 229 | return new Vector4( |
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| 230 | colorBuffer.floatBuffer.get(index * COLOR_ELEMENTS_COUNT + 0), |
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| 231 | colorBuffer.floatBuffer.get(index * COLOR_ELEMENTS_COUNT + 1), |
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| 232 | colorBuffer.floatBuffer.get(index * COLOR_ELEMENTS_COUNT + 2), |
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| 233 | colorBuffer.floatBuffer.get(index * COLOR_ELEMENTS_COUNT + 3)); |
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| 234 | } |
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| 235 | |||
| 236 | public void setNormal(int index, Vector3 normal) |
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| 237 | { |
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| 238 | normalBuffer.floatBuffer.put(index * NORMAL_ELEMENTS_COUNT + 0, normal.x); |
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| 239 | normalBuffer.floatBuffer.put(index * NORMAL_ELEMENTS_COUNT + 1, normal.y); |
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| 240 | normalBuffer.floatBuffer.put(index * NORMAL_ELEMENTS_COUNT + 2, normal.z); |
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| 241 | } |
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| 242 | |||
| 243 | public Vector3 getNormal(int index) |
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| 244 | { |
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| 245 | return new Vector3( |
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| 246 | normalBuffer.floatBuffer.get(index * NORMAL_ELEMENTS_COUNT + 0), |
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| 247 | normalBuffer.floatBuffer.get(index * NORMAL_ELEMENTS_COUNT + 1), |
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| 248 | normalBuffer.floatBuffer.get(index * NORMAL_ELEMENTS_COUNT + 2)); |
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| 249 | } |
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| 250 | |||
| 251 | public int getNormalCount() |
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| 252 | { |
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| 253 | return normalBuffer.floatBuffer.limit() / NORMAL_ELEMENTS_COUNT; |
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| 254 | } |
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| 255 | |||
| 256 | public void setTexCoord(int index, Vector2 texCoord) |
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| 257 | { |
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| 258 | texCoordBuffer.floatBuffer.put(index * TEX_COORD_ELEMENTS_COUNT + 0, texCoord.x); |
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| 259 | texCoordBuffer.floatBuffer.put(index * TEX_COORD_ELEMENTS_COUNT + 1, texCoord.y); |
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| 260 | } |
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| 261 | |||
| 262 | public Vector2 getTexCoord(int index) |
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| 263 | { |
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| 264 | return new Vector2( |
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| 265 | texCoordBuffer.floatBuffer.get(index * TEX_COORD_ELEMENTS_COUNT + 0), |
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| 266 | texCoordBuffer.floatBuffer.get(index * TEX_COORD_ELEMENTS_COUNT + 1)); |
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| 267 | } |
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| 268 | |||
| 269 | public int getTexCoordCount() |
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| 270 | { |
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| 271 | return texCoordBuffer.floatBuffer.limit() / TEX_COORD_ELEMENTS_COUNT; |
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| 272 | } |
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| 273 | |||
| 274 | |||
| 275 | /** |
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| 276 | * Activate the vertex buffer for rendering |
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| 277 | */ |
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| 278 | public void activate() |
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| 279 | { |
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| 280 | |||
| 281 | GL10 gl = GLUtil.getGL(); |
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| 282 | |||
| 283 | if (vertexBuffer != null) |
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| 284 | { |
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| 285 | gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); |
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| 286 | gl.glVertexPointer(COORD_ELEMENTS_COUNT, GL10.GL_FLOAT, 0, vertexBuffer.floatBuffer); |
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| 287 | } |
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| 288 | if (colorBuffer != null) |
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| 289 | { |
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| 290 | gl.glEnableClientState(GL10.GL_COLOR_ARRAY); |
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| 291 | gl.glColorPointer(COLOR_ELEMENTS_COUNT, GL10.GL_FLOAT, 0, colorBuffer.floatBuffer); |
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| 292 | } |
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| 293 | if (normalBuffer != null) |
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| 294 | { |
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| 295 | gl.glEnableClientState(GL10.GL_NORMAL_ARRAY); |
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| 296 | gl.glNormalPointer(GL10.GL_FLOAT, 0, normalBuffer.floatBuffer); |
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| 297 | } |
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| 298 | if (texCoordBuffer != null) |
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| 299 | { |
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| 300 | gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); |
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| 301 | gl.glTexCoordPointer(TEX_COORD_ELEMENTS_COUNT, GL10.GL_FLOAT, 0, texCoordBuffer.floatBuffer); |
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| 302 | } |
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| 303 | } |
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| 304 | |||
| 305 | /** |
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| 306 | * Deactivate the vertex buffer for rendering |
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| 307 | */ |
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| 308 | public void deactivate() |
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| 309 | { |
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| 310 | GL10 gl = GLUtil.getGL(); |
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| 311 | |||
| 312 | if (vertexBuffer != null) |
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| 313 | { |
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| 314 | gl.glDisableClientState(GL10.GL_VERTEX_ARRAY); |
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| 315 | } |
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| 316 | if (colorBuffer != null) |
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| 317 | { |
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| 318 | gl.glDisableClientState(GL10.GL_COLOR_ARRAY); |
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| 319 | } |
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| 320 | if (normalBuffer != null) |
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| 321 | { |
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| 322 | gl.glDisableClientState(GL10.GL_NORMAL_ARRAY); |
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| 323 | } |
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| 324 | if (texCoordBuffer != null) |
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| 325 | { |
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| 326 | gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY); |
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| 327 | } |
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| 328 | } |
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| 329 | |||
| 330 | public void setPrimitiveType(int primitiveType) |
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| 331 | { |
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| 332 | mPrimitiveType = primitiveType; |
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| 333 | } |
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| 334 | |||
| 335 | /** |
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| 336 | * Render the vertex buffer |
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| 337 | */ |
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| 338 | public void render() |
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| 339 | { |
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| 340 | GL10 gl = GLUtil.getGL(); |
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| 341 | |||
| 342 | activate(); |
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| 343 | |||
| 344 | if (indexBuffer != null) |
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| 345 | { |
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| 346 | // indexed drawing |
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| 347 | gl.glDrawElements(mPrimitiveType, indexBuffer.length, GL10.GL_UNSIGNED_SHORT, indexBuffer.shortBuffer); |
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| 348 | } |
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| 349 | else if (vertexBuffer != null) |
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| 350 | { |
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| 351 | // non-indexed drawing |
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| 352 | gl.glDrawArrays(mPrimitiveType, 0, vertexBuffer.length); |
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| 353 | } |
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| 354 | |||
| 355 | deactivate(); |
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| 356 | } |
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| 357 | |||
| 358 | /** |
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| 359 | * Render the vertex buffer with a specified amount of primitives |
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| 360 | */ |
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| 361 | public void render(int numPrimitives) |
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| 362 | { |
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| 363 | GL10 gl = GLUtil.getGL(); |
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| 364 | |||
| 365 | activate(); |
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| 366 | |||
| 367 | if (indexBuffer != null) |
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| 368 | { |
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| 369 | // indexed drawing |
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| 370 | gl.glDrawElements(mPrimitiveType, numPrimitives, GL10.GL_UNSIGNED_SHORT, indexBuffer.shortBuffer); |
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| 371 | } |
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| 372 | else if (vertexBuffer != null) |
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| 373 | { |
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| 374 | // non-indexed drawing |
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| 375 | gl.glDrawArrays(mPrimitiveType, 0, numPrimitives); |
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| 376 | } |
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| 377 | |||
| 378 | deactivate(); |
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| 379 | } |
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| 380 | |||
| 381 | } |