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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 205 | chris | 1 | package com.gebauz.Bauzoid.graphics.model; |
| 2 | |||
| 3 | public class VertexAttribute |
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| 4 | { |
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| 5 | // we only support a subset of the full SUX attribute list since OpenGL ES 2.0 can |
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| 6 | // only have 8 attributes per vertex |
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| 7 | |||
| 8 | public static final int POSITION = 0; |
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| 9 | public static final int COLOR = 1; |
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| 10 | public static final int NORMAL = 2; |
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| 11 | public static final int TEXCOORD0 = 3; |
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| 12 | public static final int TEXCOORD1 = 4; |
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| 13 | public static final int BLENDINDICES = 5; |
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| 14 | public static final int BLENDWEIGHTS = 6; |
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| 15 | public static final int GENERIC = 7; |
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| 16 | |||
| 17 | private int mAttribType = -1; |
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| 18 | private int mCoordsPerElement = 0; |
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| 19 | private int mByteOffset = 0; |
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| 20 | |||
| 21 | /** Constructor. */ |
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| 22 | public VertexAttribute(int attribType, int coordsPerElement, int byteOffset) |
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| 23 | { |
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| 24 | mAttribType = attribType; |
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| 25 | mCoordsPerElement = coordsPerElement; |
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| 26 | mByteOffset = byteOffset; |
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| 27 | } |
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| 28 | |||
| 29 | /** Get the attribute type. */ |
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| 245 | chris | 30 | public final int getAttribType() |
| 205 | chris | 31 | { |
| 32 | return mAttribType; |
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| 33 | } |
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| 34 | |||
| 35 | /** Get the number of coordinates per element - 2, 3 or 4. */ |
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| 36 | public final int getCoordsPerElement() |
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| 37 | { |
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| 38 | return mCoordsPerElement; |
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| 39 | } |
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| 40 | |||
| 41 | /** Get the byte offset within an element - the first one (or the only one in an individual stream) is always 0. */ |
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| 42 | public final int getByteOffset() |
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| 43 | { |
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| 44 | return mByteOffset; |
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| 45 | } |
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| 46 | |||
| 47 | /** Check if valid attribute type. */ |
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| 48 | public static final boolean isValidType(int type) |
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| 49 | { |
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| 50 | switch (type) |
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| 51 | { |
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| 52 | case 0: // Generic |
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| 53 | case 1: // Position |
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| 54 | case 2: // Normal |
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| 55 | case 3: // Color |
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| 56 | case 7: // TexCoord0 |
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| 57 | case 8: // TexCoord1; |
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| 58 | case 15: // Blend Indices |
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| 59 | case 16: // Blend Weights |
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| 60 | return true; |
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| 61 | default: |
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| 62 | return false; |
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| 63 | } |
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| 64 | } |
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| 65 | |||
| 66 | /** Convert SUX attribute type to internal. */ |
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| 67 | public static final int toInternalType(int suxType) |
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| 68 | { |
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| 69 | switch (suxType) |
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| 70 | { |
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| 71 | case 0: return GENERIC; |
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| 72 | case 1: return POSITION; |
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| 73 | case 2: return NORMAL; |
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| 74 | case 3: return COLOR; |
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| 75 | case 7: return TEXCOORD0; |
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| 76 | case 8: return TEXCOORD1; |
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| 77 | case 15: return BLENDINDICES; |
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| 78 | case 16: return BLENDWEIGHTS; |
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| 79 | default: return -1; |
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| 80 | } |
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| 81 | } |
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| 82 | } |
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| 83 |