Revision ac6a08e7
Added by Leszek Koltunski about 4 years ago
| src/main/java/org/distorted/library/mesh/MeshPolygon.java | ||
|---|---|---|
| 43 | 43 |
private void computeNumberOfVertices(int numPolygonVertices, int numPolygonBands) |
| 44 | 44 |
{
|
| 45 | 45 |
numVertices = (numPolygonVertices*numPolygonBands+2)*(numPolygonBands-1) - 1; |
| 46 |
remainingVert = numVertices; |
|
| 46 | 47 |
} |
| 47 | 48 |
|
| 48 | 49 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
| 51 | 52 |
{
|
| 52 | 53 |
remainingVert--; |
| 53 | 54 |
|
| 54 |
float band = mPolygonBands[2*polyBand ]; |
|
| 55 |
float elev = mPolygonBands[2*polyBand+1]; |
|
| 55 |
if( polyBand<mNumPolygonBands-1 ) |
|
| 56 |
{
|
|
| 57 |
float band = mPolygonBands[2*polyBand ]; |
|
| 58 |
float elev = mPolygonBands[2*polyBand+1]; |
|
| 59 |
|
|
| 60 |
float Xfirst = mPolygonVertices[2*polyVertex ]; |
|
| 61 |
float Yfirst = mPolygonVertices[2*polyVertex+1]; |
|
| 62 |
|
|
| 63 |
int polyEndVer = polyVertex==mNumPolygonVertices-1 ? 0 : polyVertex+1; |
|
| 64 |
|
|
| 65 |
float Xlast = mPolygonVertices[2*polyEndVer ]; |
|
| 66 |
float Ylast = mPolygonVertices[2*polyEndVer+1]; |
|
| 67 |
|
|
| 68 |
float quot = (float)index / (mNumPolygonBands-1-polyBand); |
|
| 56 | 69 |
|
| 57 |
float Xfirst = mPolygonVertices[2*polyVertex ]*band;
|
|
| 58 |
float Yfirst = mPolygonVertices[2*polyVertex+1]*band;
|
|
| 70 |
float xEdge = Xfirst + quot*(Xlast-Xfirst);
|
|
| 71 |
float yEdge = Yfirst + quot*(Ylast-Yfirst);
|
|
| 59 | 72 |
|
| 60 |
int polyEndVer = polyVertex==mNumPolygonVertices-1 ? 0 : polyVertex+1; |
|
| 73 |
float x = band*xEdge; |
|
| 74 |
float y = band*yEdge; |
|
| 61 | 75 |
|
| 62 |
float Xlast = mPolygonVertices[2*polyEndVer ]*band;
|
|
| 63 |
float Ylast = mPolygonVertices[2*polyEndVer+1]*band;
|
|
| 76 |
int nextPolyBand = polyBand+1;
|
|
| 77 |
int prevPolyBand = (polyBand==0 ? polyBand : polyBand-1);
|
|
| 64 | 78 |
|
| 65 |
float quot = (float)index / (polyBand-1); |
|
| 79 |
float concentricStep = mPolygonBands[2*nextPolyBand]-mPolygonBands[2*prevPolyBand]; |
|
| 80 |
float nx = concentricStep*xEdge; |
|
| 81 |
float ny = concentricStep*yEdge; |
|
| 66 | 82 |
|
| 67 |
float x = Xfirst + quot*(Xlast-Xfirst); |
|
| 68 |
float y = Yfirst + quot*(Ylast-Yfirst); |
|
| 83 |
float nz = mPolygonBands[2*prevPolyBand+1]-mPolygonBands[2*nextPolyBand+1]; |
|
| 84 |
float lenXYZ = (float)Math.sqrt(nx*nx + ny*ny + nz*nz); |
|
| 85 |
float lenXY = (float)Math.sqrt(nx*nx + ny*ny); |
|
| 69 | 86 |
|
| 70 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB ] = x; |
|
| 71 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+1] = y; |
|
| 72 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = elev; |
|
| 87 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB ] = x;
|
|
| 88 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+1] = y;
|
|
| 89 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = elev;
|
|
| 73 | 90 |
|
| 74 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB ] = 0.0f; //
|
|
| 75 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+1] = 0.0f; // TODO
|
|
| 76 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+2] = 1.0f; //
|
|
| 91 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB ] = (nz*nx) / (lenXY*lenXYZ);
|
|
| 92 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+1] = (nz*ny) / (lenXY*lenXYZ);
|
|
| 93 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+2] = lenXY / lenXYZ;
|
|
| 77 | 94 |
|
| 78 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB ] = x+0.5f; |
|
| 79 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB+1] = y+0.5f; |
|
| 95 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB ] = x+0.5f; |
|
| 96 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB+1] = y+0.5f; |
|
| 97 |
} |
|
| 98 |
else |
|
| 99 |
{
|
|
| 100 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB ] = 0.0f; |
|
| 101 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+1] = 0.0f; |
|
| 102 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = mPolygonBands[2*polyBand+1]; |
|
| 103 |
|
|
| 104 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB ] = 0.0f; |
|
| 105 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+1] = 0.0f; |
|
| 106 |
attribs1[VERT1_ATTRIBS*vertex + NOR_ATTRIB+2] = 1.0f; |
|
| 107 |
|
|
| 108 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB ] = 0.5f; |
|
| 109 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB+1] = 0.5f; |
|
| 110 |
} |
|
| 80 | 111 |
|
| 81 | 112 |
return vertex+1; |
| 82 | 113 |
} |
| ... | ... | |
| 112 | 143 |
{
|
| 113 | 144 |
int vertex=0; |
| 114 | 145 |
|
| 115 |
for(int band=0; band<mNumPolygonBands-1; band++)
|
|
| 146 |
for(int polyBand=0; polyBand<mNumPolygonBands-1; polyBand++)
|
|
| 116 | 147 |
for(int polyVertex=0; polyVertex<mNumPolygonVertices; polyVertex++) |
| 117 | 148 |
{
|
| 118 |
vertex = createBandStrip(vertex,band,polyVertex,attribs1,attribs2);
|
|
| 149 |
vertex = createBandStrip(vertex,polyBand,polyVertex,attribs1,attribs2);
|
|
| 119 | 150 |
} |
| 120 | 151 |
} |
| 121 | 152 |
|
| ... | ... | |
| 129 | 160 |
* @param bands 2K floats; K pairs of two floats each describing a single band. |
| 130 | 161 |
* 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. |
| 163 |
* Must be band[2*i] > band[2*(i+1)] ! |
|
| 132 | 164 |
*/ |
| 133 | 165 |
public MeshPolygon(float[] verticesXY, float[] bands) |
| 134 | 166 |
{
|
| ... | ... | |
| 137 | 169 |
mPolygonVertices = verticesXY; |
| 138 | 170 |
mPolygonBands = bands; |
| 139 | 171 |
mNumPolygonVertices = mPolygonVertices.length /2; |
| 140 |
mNumPolygonBands = mPolygonBands.length; |
|
| 172 |
mNumPolygonBands = mPolygonBands.length /2;
|
|
| 141 | 173 |
|
| 142 | 174 |
computeNumberOfVertices(mNumPolygonVertices,mNumPolygonBands); |
| 143 | 175 |
|
Also available in: Unified diff
Progress with MeshPolygon.