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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 205 | chris | 1 | package com.gebauz.Bauzoid.graphics.model; |
| 2 | |||
| 3 | import com.badlogic.gdx.Gdx; |
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| 4 | import com.badlogic.gdx.graphics.GL20; |
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| 5 | import com.gebauz.Bauzoid.app.Consts; |
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| 6 | import com.gebauz.Bauzoid.graphics.Graphics; |
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| 7 | import com.gebauz.Bauzoid.graphics.GraphicsObject; |
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| 8 | |||
| 221 | chris | 9 | /** Geometry class. |
| 205 | chris | 10 | * |
| 11 | */ |
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| 12 | public class Geometry extends GraphicsObject |
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| 13 | { |
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| 14 | public enum PrimitiveType |
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| 15 | { |
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| 16 | TRIANGLES, |
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| 17 | TRIANGLE_STRIP, |
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| 18 | LINES, |
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| 19 | LINE_STRIP, |
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| 20 | POINTS |
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| 21 | }; |
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| 22 | |||
| 23 | private int mPrimitiveTypeGL = GL20.GL_TRIANGLES; |
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| 24 | private PrimitiveType mPrimitiveType = PrimitiveType.TRIANGLES; |
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| 25 | private VertexStream[] mStreams = null; |
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| 26 | private IndexStream mIndexStream = null; |
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| 27 | |||
| 28 | private int mVertexCount = 0; |
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| 29 | private int mIndexCount = 0; |
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| 30 | |||
| 31 | /** Constructor. */ |
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| 32 | public Geometry(Graphics graphics, PrimitiveType primitiveType, int vertexCount, int indexCount) |
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| 33 | { |
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| 34 | super(graphics); |
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| 224 | chris | 35 | mPrimitiveType = primitiveType; |
| 36 | mPrimitiveTypeGL = toPrimitiveGL(primitiveType); |
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| 205 | chris | 37 | mVertexCount = vertexCount; |
| 38 | mIndexCount = indexCount; |
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| 39 | } |
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| 40 | |||
| 216 | chris | 41 | /** Destroy internal data. */ |
| 42 | public void dispose() |
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| 43 | { |
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| 44 | destroyIndexStream(); |
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| 45 | destroyVertexStreams(); |
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| 46 | } |
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| 47 | |||
| 48 | /** Destroy vertex streams. */ |
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| 49 | public void destroyVertexStreams() |
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| 50 | { |
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| 51 | if (mIndexStream != null) |
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| 52 | { |
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| 53 | mIndexStream.unload(); |
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| 54 | mIndexStream = null; |
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| 55 | } |
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| 56 | } |
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| 57 | |||
| 58 | /** Destroy index stream. */ |
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| 59 | public void destroyIndexStream() |
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| 60 | { |
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| 61 | if (mStreams != null) |
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| 62 | { |
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| 63 | for (VertexStream stream : mStreams) |
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| 64 | stream.unload(); |
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| 65 | |||
| 66 | mStreams = null; |
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| 67 | } |
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| 68 | } |
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| 69 | |||
| 205 | chris | 70 | /** Upload streams to hardware. */ |
| 71 | public void upload() |
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| 72 | { |
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| 73 | if (mStreams != null) |
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| 74 | { |
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| 75 | for (int i = 0; i < mStreams.length; i++) |
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| 76 | { |
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| 77 | mStreams[i].upload(); |
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| 78 | } |
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| 79 | } |
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| 80 | |||
| 81 | if (mIndexStream != null) |
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| 82 | { |
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| 83 | mIndexStream.upload(); |
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| 84 | } |
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| 85 | } |
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| 86 | |||
| 87 | /** Unload streams from hardware. */ |
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| 88 | public void unload() |
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| 89 | { |
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| 90 | if (mStreams != null) |
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| 91 | { |
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| 92 | for (int i = 0; i < mStreams.length; i++) |
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| 93 | { |
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| 94 | if (mStreams[i] != null) |
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| 95 | { |
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| 96 | mStreams[i].unload(); |
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| 97 | mStreams[i] = null; |
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| 98 | } |
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| 99 | } |
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| 100 | mStreams = null; |
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| 101 | } |
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| 102 | |||
| 103 | if (mIndexStream != null) |
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| 104 | { |
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| 105 | mIndexStream.unload(); |
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| 106 | mIndexStream = null; |
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| 107 | } |
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| 108 | } |
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| 109 | |||
| 110 | /** Activate the streams of this Geometry. */ |
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| 111 | public void activate() |
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| 112 | { |
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| 113 | if (mStreams != null) |
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| 114 | { |
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| 115 | for (int i = 0; i < mStreams.length; i++) |
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| 116 | { |
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| 117 | mStreams[i].activate(); |
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| 118 | } |
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| 119 | } |
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| 120 | |||
| 121 | if (mIndexStream != null) |
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| 122 | { |
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| 123 | mIndexStream.activate(); |
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| 124 | } |
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| 125 | } |
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| 126 | |||
| 127 | /** Deactivate the streams of this Geometry. */ |
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| 128 | public void deactivate() |
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| 129 | { |
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| 130 | if (mStreams != null) |
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| 131 | { |
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| 132 | for (int i = 0; i < mStreams.length; i++) |
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| 133 | { |
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| 134 | mStreams[i].deactivate(); |
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| 135 | } |
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| 136 | } |
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| 137 | |||
| 138 | if (mIndexStream != null) |
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| 139 | { |
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| 140 | mIndexStream.deactivate(); |
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| 141 | } |
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| 142 | } |
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| 143 | |||
| 144 | /** Render either with or without indices depending on whether there is an IndexStream. */ |
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| 145 | public void render(int firstIndex, int lastIndex, int firstVertex, int lastVertex) |
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| 146 | { |
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| 147 | if (mIndexStream != null) |
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| 148 | { |
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| 149 | renderIndices(firstIndex, lastIndex); |
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| 150 | } |
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| 151 | else |
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| 152 | { |
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| 153 | renderVertices(firstVertex, lastVertex); |
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| 154 | } |
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| 155 | //GLES20.glDrawArrays(GLES20.GL_POINTS, firstVertex, lastVertex - firstVertex + 1); |
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| 156 | } |
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| 157 | |||
| 158 | /** Render without indices. */ |
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| 159 | public void renderVertices(int firstVertex, int lastVertex) |
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| 160 | { |
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| 161 | Gdx.gl20.glDrawArrays(mPrimitiveTypeGL, firstVertex, lastVertex - firstVertex + 1); |
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| 162 | } |
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| 163 | |||
| 164 | /** Render with indices - requires IndexStream. */ |
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| 165 | public void renderIndices(int firstIndex, int lastIndex) |
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| 166 | { |
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| 167 | // offset is the offset in bytes! |
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| 168 | Gdx.gl20.glDrawElements(mPrimitiveTypeGL, lastIndex - firstIndex + 1, GL20.GL_UNSIGNED_SHORT, firstIndex * Consts.SIZEOF_SHORT); |
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| 169 | } |
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| 170 | |||
| 171 | /** Sets the vertex streams. */ |
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| 172 | public final void setVertexStreams(VertexStream[] streams) |
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| 173 | { |
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| 174 | mStreams = streams; |
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| 175 | } |
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| 176 | |||
| 177 | /** Get a vertex stream. */ |
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| 178 | public final VertexStream getVertexStream(int n) |
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| 179 | { |
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| 180 | return mStreams[n]; |
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| 181 | } |
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| 182 | |||
| 183 | /** Get the number of vertex streams. */ |
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| 184 | public final int getVertexStreamCount() |
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| 185 | { |
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| 186 | return mStreams.length; |
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| 187 | } |
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| 188 | |||
| 189 | /** Set the index stream. */ |
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| 190 | public final void setIndexStream(IndexStream indexStream) |
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| 191 | { |
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| 192 | mIndexStream = indexStream; |
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| 193 | } |
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| 194 | |||
| 195 | /** Get the index stream. */ |
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| 196 | public final IndexStream getIndexStream() |
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| 197 | { |
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| 198 | return mIndexStream; |
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| 199 | } |
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| 200 | |||
| 201 | /** Set primitive type. */ |
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| 202 | public final void setPrimitiveType(PrimitiveType type) |
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| 203 | { |
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| 204 | mPrimitiveType = type; |
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| 205 | mPrimitiveTypeGL = toPrimitiveGL(type); |
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| 206 | } |
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| 207 | |||
| 208 | /** Get primitive type. */ |
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| 209 | public final PrimitiveType getPrimitiveType() |
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| 210 | { |
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| 211 | return mPrimitiveType; |
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| 212 | } |
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| 213 | |||
| 221 | chris | 214 | /** Get number of vertices. */ |
| 215 | public final int getVertexCount() |
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| 216 | { |
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| 217 | return mVertexCount; |
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| 218 | } |
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| 219 | |||
| 220 | /** Get number of indices. */ |
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| 221 | public final int getIndexCount() |
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| 222 | { |
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| 223 | return mIndexCount; |
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| 224 | } |
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| 225 | |||
| 205 | chris | 226 | /** Convert from Primitive Type to GL Primitive Type. */ |
| 224 | chris | 227 | public static int toPrimitiveGL(PrimitiveType type) |
| 205 | chris | 228 | { |
| 229 | switch (type) |
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| 230 | { |
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| 231 | case TRIANGLES: |
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| 232 | return GL20.GL_TRIANGLES; |
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| 233 | case TRIANGLE_STRIP: |
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| 234 | return GL20.GL_TRIANGLE_STRIP; |
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| 235 | case LINES: |
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| 236 | return GL20.GL_LINES; |
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| 237 | case LINE_STRIP: |
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| 238 | return GL20.GL_LINE_STRIP; |
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| 239 | case POINTS: |
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| 240 | default: |
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| 241 | return GL20.GL_POINTS; |
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| 242 | } |
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| 243 | } |
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| 244 | |||
| 221 | chris | 245 | |
| 205 | chris | 246 | |
| 247 | } |
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| 248 |