Revision a60f7acf
Added by Leszek Koltunski 11 months ago
| src/main/java/org/distorted/library/mesh/MeshPolygon.java | ||
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| 45 | 45 |
private float[] mPolygonBands; |
| 46 | 46 |
private int mNumPolygonBands; |
| 47 | 47 |
private boolean[] mEdgeUp; |
| 48 |
private boolean[] mVertUp; |
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| 48 | 49 |
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| 49 | 50 |
private int remainingVert; |
| 50 | 51 |
private int numVertices; |
| 51 | 52 |
private int extraIndex, extraVertices; |
| 52 | 53 |
|
| 53 | 54 |
private float[] mCurveCache; |
| 55 |
private float[] mEdgeQuots; |
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| 54 | 56 |
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| 55 | 57 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 56 | 58 |
// polygonVertices>=3 , polygonBands>=2 |
| ... | ... | |
| 116 | 118 |
mCurveCache[NUM_CACHE-1] = tmpD[mNumPolygonBands]; |
| 117 | 119 |
} |
| 118 | 120 |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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private void computeQuots() |
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{
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mEdgeQuots = new float[mNumPolygonVertices]; |
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for(int i=0; i<mNumPolygonVertices; i++) |
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{
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int n = (i==mNumPolygonVertices-1 ? 0:i+1); |
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float x1 = mPolygonVertices[2*i]; |
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float y1 = mPolygonVertices[2*i+1]; |
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float x2 = mPolygonVertices[2*n]; |
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float y2 = mPolygonVertices[2*n+1]; |
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float A = x1-x2; |
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float B = y1-y2; |
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float C = A*A+B*B; |
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float x = (B*B*x1-A*B*y1)/C; |
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float y = (A*A*y1-A*B*x1)/C; |
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float dx = x1-x; |
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float dy = y1-y; |
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mEdgeQuots[i] = (float)Math.sqrt((dx*dx+dy*dy)/C); |
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} |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 120 | 150 |
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private float getSpecialQuot(int index) |
| ... | ... | |
| 209 | 239 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 210 | 240 |
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| 211 | 241 |
private void doNormals(float[] attribs1, int index, float quot, int edgeShape, |
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float xEdge, float yEdge, float zEdge, int polyBand) |
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float xEdge, float yEdge, float zEdge, int polyVertex, int polyBand)
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{
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if( ( quot<=0.5f && (edgeShape==SHAPE_UD || edgeShape==SHAPE_UU) ) || |
| 215 | 245 |
( quot> 0.5f && (edgeShape==SHAPE_DU || edgeShape==SHAPE_UU) ) ) |
| ... | ... | |
| 220 | 250 |
} |
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else |
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{
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float t = mPolygonBands[2*mNumPolygonBands-1]; |
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float x = 1.0f - mPolygonBands[2*polyBand]; |
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float d = derivative(x); |
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float d,x = 1-mPolygonBands[2*polyBand]; |
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| 226 | 254 |
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d *= ((t-zEdge)/t); |
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if( /*quot==0.0f || quot==1.0f ||*/ edgeShape==SHAPE_DD ) |
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{
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float t = mPolygonBands[2*mNumPolygonBands-1]; |
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d = ((t-zEdge)/t)*derivative(x); |
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} |
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else |
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{
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float q = quot + x*(mEdgeQuots[polyVertex]-quot); |
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d = (q<0.5f ? derivative(2*q) : -derivative(2-2*q)); |
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int nextVertex = polyVertex==mNumPolygonVertices-1 ? 0:polyVertex+1; |
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xEdge = mPolygonVertices[2*polyVertex ] - mPolygonVertices[2*nextVertex ]; |
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yEdge = mPolygonVertices[2*polyVertex+1] - mPolygonVertices[2*nextVertex+1]; |
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//android.util.Log.e("D", "normals: edgeQuot="+mEdgeQuots[polyVertex]+" vertex="+polyVertex+" d="+d+" xEdge="+xEdge+" yEdge="+yEdge+" q="+q+" quot="+quot);
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} |
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| 228 | 270 |
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float vx = d*xEdge; |
| 230 | 272 |
float vy = d*yEdge; |
| ... | ... | |
| 275 | 317 |
attribs1[VERT1_ATTRIBS*vertex + POS_ATTRIB+2] = z; |
| 276 | 318 |
|
| 277 | 319 |
int index = VERT1_ATTRIBS*vertex + NOR_ATTRIB; |
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doNormals(attribs1,index, quot, edgeShape, xEdge, yEdge, zEdge, polyBand); |
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doNormals(attribs1,index, quot, edgeShape, xEdge, yEdge, zEdge, polyVertex, polyBand);
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| 279 | 321 |
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| 280 | 322 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB ] = x+0.5f; |
| 281 | 323 |
attribs2[VERT2_ATTRIBS*vertex + TEX_ATTRIB+1] = y+0.5f; |
| ... | ... | |
| 330 | 372 |
int prev = (curr==0 ? mNumPolygonVertices-1 : curr-1); |
| 331 | 373 |
int next = (curr==mNumPolygonVertices-1 ? 0 : curr+1); |
| 332 | 374 |
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boolean l = mEdgeUp[prev];
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boolean r = mEdgeUp[next];
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boolean rd = ( !mEdgeUp[next] || mVertUp==null || !mVertUp[next] );
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boolean ld = ( !mEdgeUp[prev] || mVertUp==null || !mVertUp[curr] );
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| 335 | 377 |
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return l ? (r ? SHAPE_UU : SHAPE_UD) : (r ? SHAPE_DU : SHAPE_DUD);
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return rd ? (ld ? SHAPE_DUD : SHAPE_UD) : (ld ? SHAPE_DU : SHAPE_UU);
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} |
| 338 | 380 |
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| 339 | 381 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
| 377 | 419 |
* If the 'previous' edge is also up, then the Z is up horizontally from its middle |
| 378 | 420 |
* to the left vertex; else it goes down along the same function it goes along the bands. |
| 379 | 421 |
* Same with the right half of the edge. |
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* @param vertUp N booleans - one for each vertex. The first is about vertex 0, then vertex 1, etc. |
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* If this is null or false, the vertex is down; otheerwise - it is 'up'. |
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* This is taken into account only in one case: if both edges the vertex is the end of |
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* are 'up', then the vertex can be 'up' or 'down'; otherwise - if at least one of |
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* those edges is 'down' - then the vertex must be 'down' as well and this is ignored. |
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| 380 | 427 |
* @param exIndex This and the next parameter describe how to make the mesh denser at the |
| 381 | 428 |
* polyVertices. If e.g. exIndex=3 and exVertices=2, then 3 triangles of the |
| 382 | 429 |
* outermost band (and 2 triangles of the next band, and 1 triangle of the third |
| ... | ... | |
| 386 | 433 |
* all bands go to. |
| 387 | 434 |
* @param centerY Y coordinate of the center. |
| 388 | 435 |
*/ |
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public MeshPolygon(float[] verticesXY, float[] bands, boolean[] edgeUp, int exIndex, int exVertices, float centerX, float centerY) |
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public MeshPolygon(float[] verticesXY, float[] bands, boolean[] edgeUp, boolean[] vertUp, int exIndex, int exVertices, float centerX, float centerY)
|
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| 390 | 437 |
{
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| 391 | 438 |
super(); |
| 392 | 439 |
|
| ... | ... | |
| 395 | 442 |
mNumPolygonVertices= mPolygonVertices.length /2; |
| 396 | 443 |
mNumPolygonBands = mPolygonBands.length /2; |
| 397 | 444 |
mEdgeUp = edgeUp; |
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mVertUp = vertUp; |
|
| 398 | 446 |
extraIndex = exIndex; |
| 399 | 447 |
extraVertices = exVertices; |
| 400 | 448 |
|
| ... | ... | |
| 409 | 457 |
|
| 410 | 458 |
computeNumberOfVertices(); |
| 411 | 459 |
computeCache(); |
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computeQuots(); |
|
| 412 | 461 |
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| 413 | 462 |
float[] attribs1= new float[VERT1_ATTRIBS*numVertices]; |
| 414 | 463 |
float[] attribs2= new float[VERT2_ATTRIBS*numVertices]; |
| ... | ... | |
| 436 | 485 |
|
| 437 | 486 |
public MeshPolygon(float[] verticesXY, float[] bands, int exIndex, int exVertices) |
| 438 | 487 |
{
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this(verticesXY,bands,null,exIndex,exVertices,0.0f,0.0f); |
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this(verticesXY,bands,null,null,exIndex,exVertices,0.0f,0.0f);
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| 440 | 489 |
} |
| 441 | 490 |
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| 442 | 491 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
| 446 | 495 |
*/ |
| 447 | 496 |
public MeshPolygon(float[] verticesXY, float[] bands) |
| 448 | 497 |
{
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this(verticesXY,bands,null,0,0,0.0f,0.0f); |
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this(verticesXY,bands,null,null,0,0,0.0f,0.0f);
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| 450 | 499 |
} |
| 451 | 500 |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
Also available in: Unified diff
MeshMultigon finished.