Revision f19d533d
Added by Leszek Koltunski over 1 year ago
| src/main/java/org/distorted/library/mesh/MeshBandedTriangle.java | ||
|---|---|---|
| 32 | 32 |
*/ |
| 33 | 33 |
public class MeshBandedTriangle extends MeshBase |
| 34 | 34 |
{
|
| 35 |
public static final int MODE_NORMAL = 0; |
|
| 36 |
public static final int MODE_INVERTED= 1; |
|
| 37 |
public static final int MODE_FLAT = 2; |
|
| 38 |
|
|
| 35 | 39 |
private static final int NUM_CACHE = 20; |
| 36 |
private static final int MODE_UP = 0; |
|
| 37 |
private static final int MODE_DOWN = 1; |
|
| 38 |
private static final int MODE_FLAT = 2; |
|
| 39 | 40 |
|
| 40 | 41 |
private float mLeftX, mLeftY; |
| 41 | 42 |
private float mRightX, mRightY; |
| ... | ... | |
| 49 | 50 |
|
| 50 | 51 |
private int remainingVert; |
| 51 | 52 |
private int numVertices; |
| 52 |
private int extraIndex, extraVertices;
|
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| 53 |
private int extraBands, extraVertices;
|
|
| 53 | 54 |
|
| 54 | 55 |
private float[] mCurveCache; |
| 55 | 56 |
private float mVecX, mVecY; |
| 56 |
private int[] mEdgeShape; |
|
| 57 | 57 |
|
| 58 | 58 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 59 |
// mNumBands>=2 |
|
| 60 | 59 |
|
| 61 | 60 |
private void computeNumberOfVertices() |
| 62 |
{
|
|
| 63 |
/*
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|
| 64 |
if( mNumBands==2 && extraIndex>0 )
|
|
| 65 |
{
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| 66 |
numVertices = 1 + 2*mNumPolygonVertices*(1+extraIndex+2*extraVertices);
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| 67 |
}
|
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| 68 |
else
|
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| 69 |
{
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| 70 |
numVertices = (mNumPolygonVertices*mNumPolygonBands+2)*(mNumPolygonBands-1) - 1;
|
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| 71 |
numVertices+= 2*mNumPolygonVertices*(2*extraIndex*extraVertices);
|
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| 72 |
}
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| 73 |
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| 74 |
remainingVert = numVertices;
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| 75 |
|
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*/
|
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| 77 |
}
|
|
| 61 |
{
|
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| 62 |
if( mMode==MODE_FLAT )
|
|
| 63 |
{
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| 64 |
numVertices = 3;
|
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| 65 |
}
|
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| 66 |
else if( mMode==MODE_NORMAL )
|
|
| 67 |
{
|
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| 68 |
numVertices = mNumBands*(mNumBands+2) + 4*extraVertices*extraBands;
|
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| 69 |
}
|
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| 70 |
else
|
|
| 71 |
{
|
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| 72 |
numVertices = mNumBands*(mNumBands+2); |
|
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}
|
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| 74 |
|
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| 75 |
remainingVert = numVertices;
|
|
| 76 |
} |
|
| 78 | 77 |
|
| 79 | 78 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 80 | 79 |
|
| 81 | 80 |
private void computeCache() |
| 82 | 81 |
{
|
| 83 |
/* |
|
| 84 | 82 |
mCurveCache = new float[NUM_CACHE]; |
| 85 |
float[] tmpD = new float[mNumPolygonBands+1];
|
|
| 86 |
float[] tmpX = new float[mNumPolygonBands+1];
|
|
| 83 |
float[] tmpD = new float[mNumBands+1]; |
|
| 84 |
float[] tmpX = new float[mNumBands+1]; |
|
| 87 | 85 |
|
| 88 |
for(int i=1; i<mNumPolygonBands; i++)
|
|
| 86 |
for(int i=1; i<mNumBands; i++) |
|
| 89 | 87 |
{
|
| 90 |
tmpD[i] = (mPolygonBands[2*i-1]-mPolygonBands[2*i+1]) / (mPolygonBands[2*i]-mPolygonBands[2*i-2]);
|
|
| 91 |
tmpX[i] = 1.0f - (mPolygonBands[2*i]+mPolygonBands[2*i-2])/2;
|
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| 88 |
tmpD[i] = (mBands[2*i-1]-mBands[2*i+1]) / (mBands[2*i]-mBands[2*i-2]);
|
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| 89 |
tmpX[i] = 1.0f - (mBands[2*i]+mBands[2*i-2])/2;
|
|
| 92 | 90 |
} |
| 93 | 91 |
|
| 94 | 92 |
tmpD[0] = tmpD[1]; |
| 95 |
tmpD[mNumPolygonBands] = tmpD[mNumPolygonBands-1];
|
|
| 93 |
tmpD[mNumBands] = tmpD[mNumBands-1];
|
|
| 96 | 94 |
tmpX[0] = 0.0f; |
| 97 |
tmpX[mNumPolygonBands] = 1.0f;
|
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| 95 |
tmpX[mNumBands] = 1.0f; |
|
| 98 | 96 |
|
| 99 | 97 |
int prev = 0; |
| 100 | 98 |
int next = 0; |
| ... | ... | |
| 106 | 104 |
if( x>=tmpX[next] ) |
| 107 | 105 |
{
|
| 108 | 106 |
prev = next; |
| 109 |
while( next<=mNumPolygonBands && x>=tmpX[next] ) next++;
|
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| 107 |
while( next<=mNumBands && x>=tmpX[next] ) next++; |
|
| 110 | 108 |
} |
| 111 | 109 |
|
| 112 | 110 |
if( next>prev ) |
| ... | ... | |
| 120 | 118 |
} |
| 121 | 119 |
} |
| 122 | 120 |
|
| 123 |
mCurveCache[NUM_CACHE-1] = tmpD[mNumPolygonBands]; |
|
| 124 |
|
|
| 125 |
*/ |
|
| 126 |
} |
|
| 127 |
/* |
|
| 128 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 129 |
|
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| 130 |
private float getSpecialQuot(int index) |
|
| 131 |
{
|
|
| 132 |
int num = 1 + extraIndex + 2*extraVertices; |
|
| 133 |
int change1 = extraVertices+1; |
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| 134 |
int change2 = num-change1; |
|
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float quot = 1.0f/(extraIndex+1); |
|
| 136 |
|
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| 137 |
if( index<change1 ) return index*quot/change1; |
|
| 138 |
else if( index>change2 ) return 1-quot + (index-change2)*quot/change1; |
|
| 139 |
else return (index-change1+1)*quot; |
|
| 140 |
} |
|
| 141 |
|
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| 142 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 143 |
|
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| 144 |
private float getQuot(int index, int band, boolean isExtra) |
|
| 145 |
{
|
|
| 146 |
int num = mNumPolygonBands-1-band; |
|
| 147 |
|
|
| 148 |
if( num>0 ) |
|
| 149 |
{
|
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| 150 |
if( isExtra ) |
|
| 151 |
{
|
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| 152 |
int extra = extraIndex-band+extraVertices; |
|
| 153 |
|
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| 154 |
if( index < extra ) |
|
| 155 |
{
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| 156 |
float quot = ((float)extraIndex-band)/(extra*num); |
|
| 157 |
return index*quot; |
|
| 158 |
} |
|
| 159 |
else if( index > num+2*extraVertices-extra ) |
|
| 160 |
{
|
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| 161 |
float quot = ((float)extraIndex-band)/(extra*num); |
|
| 162 |
return (1.0f-((float)extraIndex-band)/num) + (index-num-2*extraVertices+extra)*quot; |
|
| 163 |
} |
|
| 164 |
else |
|
| 165 |
{
|
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| 166 |
return ((float)(index-extraVertices))/num; |
|
| 167 |
} |
|
| 168 |
} |
|
| 169 |
|
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| 170 |
return (float)index/num; |
|
| 171 |
} |
|
| 172 |
|
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| 173 |
return 1.0f; |
|
| 174 |
} |
|
| 175 |
|
|
| 176 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 177 |
|
|
| 178 |
private float computeZEdge(float quot) |
|
| 179 |
{
|
|
| 180 |
if( quot>=1.0f ) return 0.0f; |
|
| 181 |
|
|
| 182 |
for(int band=1; band<mNumPolygonBands; band++) |
|
| 183 |
{
|
|
| 184 |
float curr = mPolygonBands[2*band]; |
|
| 185 |
|
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| 186 |
if( curr<=quot ) |
|
| 187 |
{
|
|
| 188 |
float prev = mPolygonBands[2*band-2]; |
|
| 189 |
float prevH= mPolygonBands[2*band-1]; |
|
| 190 |
float currH= mPolygonBands[2*band+1]; |
|
| 191 |
|
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| 192 |
float A = (prev-quot)/(prev-curr); |
|
| 193 |
|
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| 194 |
return A*currH + (1-A)*prevH; |
|
| 195 |
} |
|
| 196 |
} |
|
| 197 |
|
|
| 198 |
return 0.0f; |
|
| 121 |
mCurveCache[NUM_CACHE-1] = tmpD[mNumBands]; |
|
| 199 | 122 |
} |
| 200 | 123 |
|
| 201 | 124 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
| 220 | 143 |
|
| 221 | 144 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 222 | 145 |
|
| 223 |
private void figureOutNormalVector2D(int edgeShape, int polyVertex, int polyEndVer, float quot, float xEdge, float yEdge )
|
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| 146 |
private void figureOutNormalVector2D(float qx)
|
|
| 224 | 147 |
{
|
| 225 |
if( edgeShape==SHAPE_DD ) |
|
| 226 |
{
|
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| 227 |
if( quot<0.5f ) |
|
| 228 |
{
|
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| 229 |
int p = polyVertex>0 ? polyVertex-1 : mNumPolygonVertices-1; |
|
| 230 |
int prvShape = mEdgeShape[p]; |
|
| 231 |
|
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| 232 |
switch(prvShape) |
|
| 233 |
{
|
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| 234 |
case SHAPE_DD : mVecX = xEdge; |
|
| 235 |
mVecY = yEdge; |
|
| 236 |
break; |
|
| 237 |
case SHAPE_UD : |
|
| 238 |
case SHAPE_DUD: float a = 2*quot; |
|
| 239 |
float xCurr= mPolygonVertices[2*polyVertex ]; |
|
| 240 |
float yCurr= mPolygonVertices[2*polyVertex+1]; |
|
| 241 |
float xPrev= mPolygonVertices[2*p ]; |
|
| 242 |
float yPrev= mPolygonVertices[2*p+1]; |
|
| 243 |
float xVec = xCurr-xPrev; |
|
| 244 |
float yVec = yCurr-yPrev; |
|
| 245 |
|
|
| 246 |
mVecX = a*xEdge + (1-a)*xVec; |
|
| 247 |
mVecY = a*yEdge + (1-a)*yVec; |
|
| 248 |
|
|
| 249 |
break; |
|
| 250 |
default: throw new RuntimeException("figureOutNormalVector2D: impossible1: "+prvShape);
|
|
| 251 |
} |
|
| 252 |
} |
|
| 253 |
else |
|
| 254 |
{
|
|
| 255 |
int n = polyEndVer==mNumPolygonVertices-1 ? 0 : polyEndVer+1; |
|
| 256 |
int nxtShape = mEdgeShape[polyEndVer]; |
|
| 257 |
|
|
| 258 |
switch(nxtShape) |
|
| 259 |
{
|
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| 260 |
case SHAPE_DD : mVecX = xEdge; |
|
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mVecY = yEdge; |
|
| 262 |
break; |
|
| 263 |
case SHAPE_DU : |
|
| 264 |
case SHAPE_DUD: float a = 2-2*quot; |
|
| 265 |
float xCurr= mPolygonVertices[2*polyEndVer ]; |
|
| 266 |
float yCurr= mPolygonVertices[2*polyEndVer+1]; |
|
| 267 |
float xNext= mPolygonVertices[2*n ]; |
|
| 268 |
float yNext= mPolygonVertices[2*n+1]; |
|
| 269 |
float xVec = xCurr-xNext; |
|
| 270 |
float yVec = yCurr-yNext; |
|
| 271 |
|
|
| 272 |
mVecX = a*xEdge + (1-a)*xVec; |
|
| 273 |
mVecY = a*yEdge + (1-a)*yVec; |
|
| 274 |
break; |
|
| 275 |
default: throw new RuntimeException("figureOutNormalVector2D: impossible2: "+nxtShape);
|
|
| 276 |
} |
|
| 277 |
} |
|
| 278 |
} |
|
| 279 |
else if( edgeShape==SHAPE_UU || (quot>=0.5f && edgeShape==SHAPE_DU) || (quot<0.5f && edgeShape==SHAPE_UD) ) |
|
| 280 |
{
|
|
| 281 |
mVecX = 1; |
|
| 282 |
mVecY = 0; |
|
| 283 |
} |
|
| 284 |
else |
|
| 285 |
{
|
|
| 286 |
float dx = mPolygonVertices[2*polyVertex ] - mPolygonVertices[2*polyEndVer ]; |
|
| 287 |
float dy = mPolygonVertices[2*polyVertex+1] - mPolygonVertices[2*polyEndVer+1]; |
|
| 288 |
|
|
| 289 |
if( quot<0.5 ) |
|
| 290 |
{
|
|
| 291 |
mVecX = dx; |
|
| 292 |
mVecY = dy; |
|
| 293 |
} |
|
| 294 |
else |
|
| 295 |
{
|
|
| 296 |
mVecX = -dx; |
|
| 297 |
mVecY = -dy; |
|
| 298 |
} |
|
| 299 |
} |
|
| 148 |
mVecX = mNormL[0] + qx*(mNormR[0]-mNormL[0]); |
|
| 149 |
mVecY = mNormL[1] + qx*(mNormR[1]-mNormL[1]); |
|
| 300 | 150 |
} |
| 301 | 151 |
|
| 302 | 152 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 303 | 153 |
|
| 304 |
private float figureOutDerivative(int edgeShape, int polyBand, float quot)
|
|
| 154 |
private float figureOutDerivative(float qy)
|
|
| 305 | 155 |
{
|
| 306 |
if( edgeShape==SHAPE_DD )
|
|
| 156 |
switch(mMode)
|
|
| 307 | 157 |
{
|
| 308 |
return derivative(1-mPolygonBands[2*polyBand]); |
|
| 158 |
case MODE_NORMAL : return derivative(1-qy); |
|
| 159 |
case MODE_INVERTED: return -derivative(qy); |
|
| 160 |
default : return 0; |
|
| 309 | 161 |
} |
| 310 |
if( edgeShape==SHAPE_UU || (quot>=0.5f && edgeShape==SHAPE_DU) || (quot<0.5f && edgeShape==SHAPE_UD) ) |
|
| 162 |
} |
|
| 163 |
|
|
| 164 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 165 |
|
|
| 166 |
private float computeElevation(int band) |
|
| 167 |
{
|
|
| 168 |
switch(mMode) |
|
| 311 | 169 |
{
|
| 312 |
return 0; |
|
| 170 |
case MODE_NORMAL : return mBands[2*band+1]; |
|
| 171 |
case MODE_INVERTED: return mBands[2*(mNumBands-band)+1]; |
|
| 172 |
default : return mBands[2*mNumBands+1]; |
|
| 313 | 173 |
} |
| 314 |
|
|
| 315 |
float x = 1-mPolygonBands[2*polyBand]; |
|
| 316 |
float q = quot>=0.5f ? 2-2*quot : 2*quot; |
|
| 317 |
return derivative((1-x)*q+x); |
|
| 318 | 174 |
} |
| 319 | 175 |
|
| 320 | 176 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 321 | 177 |
|
| 322 |
private int addVertex(int vertex, int polyBand, int polyVertex, int polyEndVer, float quot, |
|
| 323 |
float[] attribs1, float[] attribs2) |
|
| 178 |
private int addStripVertex(int vertex, float qx, float qy, int band, float[] attribs1, float[] attribs2) |
|
| 324 | 179 |
{
|
| 325 | 180 |
remainingVert--; |
| 326 | 181 |
|
| 327 |
float Xfirst= mPolygonVertices[2*polyVertex ]; |
|
| 328 |
float Yfirst= mPolygonVertices[2*polyVertex+1]; |
|
| 329 |
float Xlast = mPolygonVertices[2*polyEndVer ]; |
|
| 330 |
float Ylast = mPolygonVertices[2*polyEndVer+1]; |
|
| 331 |
|
|
| 332 |
float xEdge = Xfirst + quot*(Xlast-Xfirst); |
|
| 333 |
float yEdge = Yfirst + quot*(Ylast-Yfirst); |
|
| 334 |
float zEdge; |
|
| 182 |
// android.util.Log.e("D", "new v: qx="+qx+" band="+band);
|
|
| 335 | 183 |
|
| 336 |
float q = mPolygonBands[2*polyBand]; |
|
| 337 |
float o = mPolygonBands[2*polyBand+1]; |
|
| 338 |
float t = mPolygonBands[2*mNumPolygonBands-1]; |
|
| 184 |
float bx = mLeftX + qx*(mRightX-mLeftX); |
|
| 185 |
float by = mLeftY + qx*(mRightY-mLeftY); |
|
| 339 | 186 |
|
| 340 |
int shape = mEdgeShape[polyVertex]; |
|
| 341 |
|
|
| 342 |
switch(shape) |
|
| 343 |
{
|
|
| 344 |
case SHAPE_DD : zEdge = 0.0f; break; |
|
| 345 |
case SHAPE_UU : zEdge = t; break; |
|
| 346 |
case SHAPE_DU : zEdge = quot>=0.5f ? t : computeZEdge(1-2*quot); break; |
|
| 347 |
case SHAPE_UD : zEdge = quot<=0.5f ? t : computeZEdge(2*quot-1); break; |
|
| 348 |
default : zEdge = quot<=0.5f ? computeZEdge(1-2*quot) : computeZEdge(2*quot-1); break; |
|
| 349 |
} |
|
| 187 |
float q = 1-qy; |
|
| 188 |
float x = bx + q*(mTopX-bx); |
|
| 189 |
float y = by + q*(mTopY-by); |
|
| 190 |
float z = computeElevation(band); |
|
| 350 | 191 |
|
| 351 |
float x = q*xEdge; |
|
| 352 |
float y = q*yEdge; |
|
| 353 |
float z = o + (t-o)*(zEdge/t); |
|
| 192 |
figureOutNormalVector2D(band<mNumBands ? qx : 0.5f); |
|
| 193 |
float d = figureOutDerivative(qy); |
|
| 354 | 194 |
|
| 355 | 195 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB ] = x; |
| 356 | 196 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+1] = y; |
| 357 | 197 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = z; |
| 358 | 198 |
|
| 359 |
figureOutNormalVector2D(shape, polyVertex, polyEndVer, quot, xEdge, yEdge); |
|
| 360 |
float d = figureOutDerivative(shape,polyBand,quot); |
|
| 361 |
|
|
| 362 | 199 |
float vx = d*mVecX; |
| 363 | 200 |
float vy = d*mVecY; |
| 364 | 201 |
float vz = mVecX*mVecX + mVecY*mVecY; |
| ... | ... | |
| 377 | 214 |
|
| 378 | 215 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 379 | 216 |
|
| 380 |
private int createBandStrip(int vertex, int polyBand, int polyVertex, float[] attribs1, float[] attribs2)
|
|
| 217 |
private int createBand(int vertex, int band, float[] attribs1, float[] attribs2)
|
|
| 381 | 218 |
{
|
| 382 |
if( polyVertex==0 ) |
|
| 219 |
boolean fromLeft = (band%2 == 0); |
|
| 220 |
int extra = ((band<extraBands && mMode==MODE_NORMAL) ? extraVertices : 0); |
|
| 221 |
int n = mNumBands-band-1; |
|
| 222 |
|
|
| 223 |
float b = 1.0f/(mNumBands-band); |
|
| 224 |
float dxb = fromLeft ? b : -b; |
|
| 225 |
float sdx = dxb/(extra+1); |
|
| 226 |
|
|
| 227 |
float qx = fromLeft ? 0.0f : 1.0f; |
|
| 228 |
|
|
| 229 |
int bb = mMode==MODE_NORMAL ? band : mNumBands-band; |
|
| 230 |
int bt = mMode==MODE_NORMAL ? band+1 : mNumBands-(band+1); |
|
| 231 |
|
|
| 232 |
float qyb = mBands[2*bb]; |
|
| 233 |
float qyt = mBands[2*bt]; |
|
| 234 |
|
|
| 235 |
if( mMode!=MODE_NORMAL ) |
|
| 383 | 236 |
{
|
| 384 |
vertex = addVertex(vertex,polyBand,0,1,0,attribs1,attribs2);
|
|
| 385 |
if( polyBand>0 ) vertex = addVertex(vertex,polyBand,0,1,0,attribs1,attribs2);
|
|
| 237 |
qyb = 1-qyb;
|
|
| 238 |
qyt = 1-qyt;
|
|
| 386 | 239 |
} |
| 387 | 240 |
|
| 388 |
boolean specialCase = mNumPolygonBands==2 && polyBand==0 && extraIndex>0; |
|
| 389 |
boolean isExtra = polyBand<extraIndex; |
|
| 390 |
int numPairs = specialCase ? extraIndex+1 : mNumPolygonBands-1-polyBand; |
|
| 391 |
if( isExtra ) numPairs += 2*extraVertices; |
|
| 241 |
vertex = addStripVertex(vertex, qx, qyb, band, attribs1,attribs2); |
|
| 392 | 242 |
|
| 393 |
int polyEndVer = polyVertex==mNumPolygonVertices-1 ? 0 : polyVertex+1; |
|
| 394 |
float quot1, quot2; |
|
| 243 |
for(int v=0; v<extra; v++) |
|
| 244 |
{
|
|
| 245 |
vertex = addStripVertex(vertex, qx , qyt, band+1, attribs1,attribs2); |
|
| 246 |
vertex = addStripVertex(vertex, qx+(v+1)*sdx, qyb, band , attribs1,attribs2); |
|
| 247 |
} |
|
| 395 | 248 |
|
| 396 |
for(int index=0; index<numPairs; index++)
|
|
| 249 |
if( n>0 )
|
|
| 397 | 250 |
{
|
| 398 |
if( specialCase ) |
|
| 399 |
{
|
|
| 400 |
quot1 = 1.0f; |
|
| 401 |
quot2 = getSpecialQuot(index+1); |
|
| 402 |
} |
|
| 403 |
else |
|
| 251 |
float t = 1.0f/n; |
|
| 252 |
float dxt = fromLeft ? t : -t; |
|
| 253 |
|
|
| 254 |
for(int v=0; v<n; v++) |
|
| 404 | 255 |
{
|
| 405 |
quot1 = getQuot(index ,polyBand+1, isExtra);
|
|
| 406 |
quot2 = getQuot(index+1,polyBand , isExtra);
|
|
| 256 |
vertex=addStripVertex(vertex, qx+ v *dxt, qyt, band+1, attribs1, attribs2);
|
|
| 257 |
vertex=addStripVertex(vertex, qx+(v+1)*dxb, qyb, band , attribs1, attribs2);
|
|
| 407 | 258 |
} |
| 259 |
} |
|
| 408 | 260 |
|
| 409 |
vertex = addVertex(vertex,polyBand+1,polyVertex,polyEndVer,quot1,attribs1,attribs2); |
|
| 410 |
vertex = addVertex(vertex,polyBand ,polyVertex,polyEndVer,quot2,attribs1,attribs2); |
|
| 261 |
qx = 1-qx; |
|
| 262 |
|
|
| 263 |
for(int v=0; v<=extra; v++) |
|
| 264 |
{
|
|
| 265 |
vertex = addStripVertex(vertex, qx , qyt, band+1, attribs1,attribs2); |
|
| 266 |
vertex = addStripVertex(vertex, qx-dxb+(v+1)*sdx, qyb, band , attribs1,attribs2); |
|
| 411 | 267 |
} |
| 412 | 268 |
|
| 413 | 269 |
return vertex; |
| 414 | 270 |
} |
| 415 | 271 |
|
| 416 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 417 |
|
|
| 418 |
private int computeEdgeShape(int curr) |
|
| 419 |
{
|
|
| 420 |
if( mEdgeUp==null || !mEdgeUp[curr] ) return SHAPE_DD; |
|
| 421 |
|
|
| 422 |
int prev = (curr==0 ? mNumPolygonVertices-1 : curr-1); |
|
| 423 |
int next = (curr==mNumPolygonVertices-1 ? 0 : curr+1); |
|
| 424 |
|
|
| 425 |
boolean rd = ( !mEdgeUp[next] || mVertUp==null || !mVertUp[next] ); |
|
| 426 |
boolean ld = ( !mEdgeUp[prev] || mVertUp==null || !mVertUp[curr] ); |
|
| 427 |
|
|
| 428 |
return rd ? (ld ? SHAPE_DUD : SHAPE_UD) : (ld ? SHAPE_DU : SHAPE_UU); |
|
| 429 |
} |
|
| 430 |
*/ |
|
| 431 | 272 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 432 | 273 |
|
| 433 | 274 |
private void buildGrid(float[] attribs1, float[] attribs2) |
| 434 | 275 |
{
|
| 435 |
/* |
|
| 436 |
int vertex=0; |
|
| 437 |
|
|
| 438 |
mEdgeShape = new int[mNumPolygonVertices]; |
|
| 439 |
|
|
| 440 |
for(int polyVertex=0; polyVertex<mNumPolygonVertices; polyVertex++) |
|
| 441 |
mEdgeShape[polyVertex] = computeEdgeShape(polyVertex); |
|
| 442 |
|
|
| 443 |
for(int polyBand=0; polyBand<mNumPolygonBands-1; polyBand++) |
|
| 444 |
for(int polyVertex=0; polyVertex<mNumPolygonVertices; polyVertex++) |
|
| 445 |
vertex = createBandStrip(vertex,polyBand,polyVertex,attribs1,attribs2); |
|
| 446 |
|
|
| 447 |
*/ |
|
| 276 |
if( mMode==MODE_FLAT ) |
|
| 277 |
{
|
|
| 278 |
addStripVertex(0, 0, 1, 0, attribs1,attribs2); |
|
| 279 |
addStripVertex(1, 0, 0, 0, attribs1,attribs2); |
|
| 280 |
addStripVertex(2, 1, 1, 0, attribs1,attribs2); |
|
| 281 |
} |
|
| 282 |
else |
|
| 283 |
{
|
|
| 284 |
int vertex=0; |
|
| 285 |
for(int b=0; b<mNumBands; b++) vertex=createBand(vertex, b, attribs1, attribs2); |
|
| 286 |
} |
|
| 448 | 287 |
} |
| 449 | 288 |
|
| 450 | 289 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
| 475 | 314 |
* band which defines the strip aong the 'left-right' edge. |
| 476 | 315 |
* If FLAT, everything is flat anyway, so we disregard the bands and return a mesh |
| 477 | 316 |
* with 3 vertices. |
| 478 |
* @param exIndex This and the next parameter describe how to make the mesh denser at the
|
|
| 479 |
* 'left' and 'right' vertices. If e.g. exIndex=3 and exVertices=2, then 3 triangles
|
|
| 317 |
* @param exBands This and the next parameter describe how to make the mesh denser at the
|
|
| 318 |
* 'left' and 'right' vertices. If e.g. exBands=3 and exVertices=2, then 3 triangles
|
|
| 480 | 319 |
* of the outermost band (and 2 triangles of the next band, and 1 triangle of the |
| 481 | 320 |
* third band) get denser - the 3 triangles become 3+2 = 5. |
| 482 | 321 |
* @param exVertices See above. |
| 483 | 322 |
*/ |
| 484 |
public MeshBandedTriangle(float[] vL, float[] vR, float[] vT, float[] bands, float[] normL, float[] normR, int mode, int exIndex, int exVertices)
|
|
| 323 |
public MeshBandedTriangle(float[] vL, float[] vR, float[] vT, float[] bands, float[] normL, float[] normR, int mode, int exBands, int exVertices)
|
|
| 485 | 324 |
{
|
| 486 | 325 |
super(); |
| 487 | 326 |
|
| ... | ... | |
| 497 | 336 |
mNormR= normR; |
| 498 | 337 |
|
| 499 | 338 |
mBands = bands; |
| 500 |
mNumBands = mBands.length /2;
|
|
| 501 |
extraIndex = exIndex;
|
|
| 339 |
mNumBands = mBands.length/2 -1;
|
|
| 340 |
extraBands = exBands;
|
|
| 502 | 341 |
extraVertices = exVertices; |
| 503 | 342 |
|
| 504 | 343 |
computeNumberOfVertices(); |
Also available in: Unified diff
MeshBandedTriangle implemented