Revision ac6a08e7
Added by Leszek Koltunski over 3 years ago
| src/main/java/org/distorted/library/mesh/MeshPolygon.java | ||
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| 43 | 43 |
private void computeNumberOfVertices(int numPolygonVertices, int numPolygonBands) |
| 44 | 44 |
{
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| 45 | 45 |
numVertices = (numPolygonVertices*numPolygonBands+2)*(numPolygonBands-1) - 1; |
| 46 |
remainingVert = numVertices; |
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| 46 | 47 |
} |
| 47 | 48 |
|
| 48 | 49 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
| 51 | 52 |
{
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remainingVert--; |
| 53 | 54 |
|
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float band = mPolygonBands[2*polyBand ]; |
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float elev = mPolygonBands[2*polyBand+1]; |
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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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|
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float Xfirst = mPolygonVertices[2*polyVertex ]; |
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float Yfirst = mPolygonVertices[2*polyVertex+1]; |
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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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float quot = (float)index / (mNumPolygonBands-1-polyBand); |
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| 56 | 69 |
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float Xfirst = mPolygonVertices[2*polyVertex ]*band;
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float Yfirst = mPolygonVertices[2*polyVertex+1]*band;
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float xEdge = Xfirst + quot*(Xlast-Xfirst);
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float yEdge = Yfirst + quot*(Ylast-Yfirst);
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| 59 | 72 |
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int polyEndVer = polyVertex==mNumPolygonVertices-1 ? 0 : polyVertex+1; |
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float x = band*xEdge; |
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float y = band*yEdge; |
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| 61 | 75 |
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float Xlast = mPolygonVertices[2*polyEndVer ]*band;
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float Ylast = mPolygonVertices[2*polyEndVer+1]*band;
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int nextPolyBand = polyBand+1;
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int prevPolyBand = (polyBand==0 ? polyBand : polyBand-1);
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| 64 | 78 |
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float quot = (float)index / (polyBand-1); |
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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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| 66 | 82 |
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float x = Xfirst + quot*(Xlast-Xfirst); |
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float y = Yfirst + quot*(Ylast-Yfirst); |
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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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| 69 | 86 |
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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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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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| 73 | 90 |
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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; // TODO
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attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+2] = 1.0f; //
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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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| 77 | 94 |
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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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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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} |
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else |
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{
|
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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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|
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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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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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| 80 | 111 |
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| 81 | 112 |
return vertex+1; |
| 82 | 113 |
} |
| ... | ... | |
| 112 | 143 |
{
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| 113 | 144 |
int vertex=0; |
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for(int band=0; band<mNumPolygonBands-1; band++)
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for(int polyBand=0; polyBand<mNumPolygonBands-1; polyBand++)
|
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| 116 | 147 |
for(int polyVertex=0; polyVertex<mNumPolygonVertices; polyVertex++) |
| 117 | 148 |
{
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vertex = createBandStrip(vertex,band,polyVertex,attribs1,attribs2);
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vertex = createBandStrip(vertex,polyBand,polyVertex,attribs1,attribs2);
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} |
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} |
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|
| ... | ... | |
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* @param bands 2K floats; K pairs of two floats each describing a single band. |
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* From (1.0,Z[0]) (outer edge, its Z elevation) to (0.0,Z[K]) (the center, |
| 131 | 162 |
* its elevation). The polygon is split into such concentric bands. |
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* Must be band[2*i] > band[2*(i+1)] ! |
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*/ |
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public MeshPolygon(float[] verticesXY, float[] bands) |
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{
|
| ... | ... | |
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mPolygonVertices = verticesXY; |
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mPolygonBands = bands; |
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mNumPolygonVertices = mPolygonVertices.length /2; |
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mNumPolygonBands = mPolygonBands.length; |
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mNumPolygonBands = mPolygonBands.length /2;
|
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| 141 | 173 |
|
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computeNumberOfVertices(mNumPolygonVertices,mNumPolygonBands); |
| 143 | 175 |
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Also available in: Unified diff
Progress with MeshPolygon.