Revision eeb5d115
Added by Leszek Koltunski over 3 years ago
| src/main/java/org/distorted/library/mesh/MeshPolygon.java | ||
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| 37 | 37 |
private int remainingVert; |
| 38 | 38 |
private int numVertices; |
| 39 | 39 |
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| 40 |
private float[] mBandQuot; |
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| 41 |
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| 40 | 42 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 41 | 43 |
// polygonVertices>=3 , polygonBands>=2 |
| 42 | 44 |
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| ... | ... | |
| 48 | 50 |
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| 49 | 51 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 50 | 52 |
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| 51 |
private int addVertex(int vertex, int polyBand, int polyVertex, int index, float[] attribs1, float[] attribs2)
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private void computeCache()
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| 52 | 54 |
{
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remainingVert--; |
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if( polyBand<mNumPolygonBands-1 ) |
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{
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float band = mPolygonBands[2*polyBand ]; |
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float elev = mPolygonBands[2*polyBand+1]; |
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mBandQuot = new float[mNumPolygonBands]; |
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| 59 | 56 |
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float Xfirst = mPolygonVertices[2*polyVertex ]; |
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float Yfirst = mPolygonVertices[2*polyVertex+1]; |
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int next, prev; |
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| 62 | 58 |
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int polyEndVer = polyVertex==mNumPolygonVertices-1 ? 0 : polyVertex+1;
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float Xlast = mPolygonVertices[2*polyEndVer ];
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float Ylast = mPolygonVertices[2*polyEndVer+1];
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for(int band=0; band<mNumPolygonBands; band++)
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{
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next = (band==mNumPolygonBands-1 ? band : band+1);
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prev = (band== 0 ? band : band-1);
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| 67 | 63 |
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float quot = (float)index / (mNumPolygonBands-1-polyBand); |
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mBandQuot[band] = (mPolygonBands[2*prev+1]-mPolygonBands[2*next+1]) / (mPolygonBands[2*next]-mPolygonBands[2*prev]); |
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} |
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} |
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| 69 | 67 |
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float xEdge = Xfirst + quot*(Xlast-Xfirst); |
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float yEdge = Yfirst + quot*(Ylast-Yfirst); |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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| 72 | 69 |
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float x = band*xEdge; |
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float y = band*yEdge; |
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private int addVertex(int vertex, int polyBand, int polyVertex, int polyEndVer, int index, float[] attribs1, float[] attribs2) |
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{
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remainingVert--; |
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| 75 | 73 |
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int nextPolyBand = polyBand+1; |
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int prevPolyBand = (polyBand==0 ? polyBand : polyBand-1); |
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float quot = polyBand<mNumPolygonBands-1 ? (float)index / (mNumPolygonBands-1-polyBand) : 1.0f; |
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| 78 | 75 |
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float concentricStep = mPolygonBands[2*nextPolyBand]-mPolygonBands[2*prevPolyBand]; |
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float nx = concentricStep*xEdge; |
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float ny = concentricStep*yEdge; |
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float vx,vy,vz; |
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| 82 | 77 |
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float nz = mPolygonBands[2*prevPolyBand+1]-mPolygonBands[2*nextPolyBand+1]; |
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float lenXYZ = (float)Math.sqrt(nx*nx + ny*ny + nz*nz); |
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float lenXY = (float)Math.sqrt(nx*nx + ny*ny); |
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float Xfirst= mPolygonVertices[2*polyVertex ]; |
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float Yfirst= mPolygonVertices[2*polyVertex+1]; |
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float Xlast = mPolygonVertices[2*polyEndVer ]; |
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float Ylast = mPolygonVertices[2*polyEndVer+1]; |
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| 86 | 82 |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB ] = x; |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+1] = y; |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = elev; |
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float xEdge = Xfirst + quot*(Xlast-Xfirst); |
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float yEdge = Yfirst + quot*(Ylast-Yfirst); |
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| 90 | 85 |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB ] = (nz*nx) / (lenXY*lenXYZ); |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+1] = (nz*ny) / (lenXY*lenXYZ); |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+2] = lenXY / lenXYZ; |
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float x = mPolygonBands[2*polyBand]*xEdge; |
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float y = mPolygonBands[2*polyBand]*yEdge; |
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| 94 | 88 |
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attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB ] = x+0.5f; |
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attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB+1] = y+0.5f; |
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if( quot==0.0f || quot==1.0f ) |
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{
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vx = mBandQuot[polyBand]*xEdge; |
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vy = mBandQuot[polyBand]*yEdge; |
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vz = xEdge*xEdge + yEdge*yEdge; |
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| 97 | 94 |
} |
| 98 | 95 |
else |
| 99 | 96 |
{
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB ] = 0.0f; |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+1] = 0.0f; |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = mPolygonBands[2*polyBand+1]; |
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vx = mBandQuot[polyBand]*(Ylast-Yfirst); |
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vy = mBandQuot[polyBand]*(Xfirst-Xlast); |
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float tmp = Xfirst*Ylast - Xlast*Yfirst; |
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vz = (tmp<0 ? -tmp:tmp); |
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} |
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| 103 | 102 |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB ] = 0.0f; |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+1] = 0.0f; |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+2] = 1.0f; |
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float len = (float)Math.sqrt(vx*vx + vy*vy + vz*vz); |
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| 107 | 104 |
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attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB ] = 0.5f; |
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attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB+1] = 0.5f; |
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} |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB ] = x; |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+1] = y; |
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attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = mPolygonBands[2*polyBand+1]; |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB ] = vx/len; |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+1] = vy/len; |
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+2] = vz/len; |
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attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB ] = x+0.5f; |
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attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB+1] = y+0.5f; |
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| 111 | 115 |
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| 112 | 116 |
return vertex+1; |
| 113 | 117 |
} |
| ... | ... | |
| 118 | 122 |
{
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| 119 | 123 |
if( polyVertex==0 ) |
| 120 | 124 |
{
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vertex = addVertex(vertex,polyBand,polyVertex,0,attribs1,attribs2);
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vertex = addVertex(vertex,polyBand,0,1,0,attribs1,attribs2);
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| 122 | 126 |
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| 123 | 127 |
if( polyBand>0 ) |
| 124 | 128 |
{
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vertex = addVertex(vertex,polyBand,polyVertex,0,attribs1,attribs2);
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vertex = addVertex(vertex,polyBand,0,1,0,attribs1,attribs2);
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| 126 | 130 |
} |
| 127 | 131 |
} |
| 128 | 132 |
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| 129 | 133 |
int numPairs = mNumPolygonBands-1-polyBand; |
| 134 |
int polyEndVer = polyVertex==mNumPolygonVertices-1 ? 0 : polyVertex+1; |
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| 130 | 135 |
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for(int pair=0; pair<numPairs; pair++)
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for(int index=0; index<numPairs; index++)
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| 132 | 137 |
{
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vertex = addVertex(vertex,polyBand+1,polyVertex,pair ,attribs1,attribs2);
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vertex = addVertex(vertex,polyBand ,polyVertex,pair+1,attribs1,attribs2);
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vertex = addVertex(vertex,polyBand+1,polyVertex,polyEndVer,index ,attribs1,attribs2);
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vertex = addVertex(vertex,polyBand ,polyVertex,polyEndVer,index+1,attribs1,attribs2);
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| 135 | 140 |
} |
| 136 | 141 |
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| 137 | 142 |
return vertex; |
| ... | ... | |
| 172 | 177 |
mNumPolygonBands = mPolygonBands.length /2; |
| 173 | 178 |
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| 174 | 179 |
computeNumberOfVertices(mNumPolygonVertices,mNumPolygonBands); |
| 180 |
computeCache(); |
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| 175 | 181 |
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| 176 | 182 |
float[] attribs1= new float[VERT1_ATTRIBS*numVertices]; |
| 177 | 183 |
float[] attribs2= new float[VERT2_ATTRIBS*numVertices]; |
Also available in: Unified diff
Progress with MeshPolygon.