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author | dan miller | 2007-10-19 05:15:33 +0000 |
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committer | dan miller | 2007-10-19 05:15:33 +0000 |
commit | 79eca25c945a535a7a0325999034bae17da92412 (patch) | |
tree | 40ff433d94859d629aac933d5ec73b382f62ba1a /libraries/ode-0.9/OPCODE/OPC_AABBCollider.cpp | |
parent | adding ode source to /libraries (diff) | |
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resubmitting ode
Diffstat (limited to '')
-rw-r--r-- | libraries/ode-0.9/OPCODE/OPC_AABBCollider.cpp | 696 |
1 files changed, 696 insertions, 0 deletions
diff --git a/libraries/ode-0.9/OPCODE/OPC_AABBCollider.cpp b/libraries/ode-0.9/OPCODE/OPC_AABBCollider.cpp new file mode 100644 index 0000000..eaaadf1 --- /dev/null +++ b/libraries/ode-0.9/OPCODE/OPC_AABBCollider.cpp | |||
@@ -0,0 +1,696 @@ | |||
1 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
2 | /* | ||
3 | * OPCODE - Optimized Collision Detection | ||
4 | * Copyright (C) 2001 Pierre Terdiman | ||
5 | * Homepage: http://www.codercorner.com/Opcode.htm | ||
6 | */ | ||
7 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
8 | |||
9 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
10 | /** | ||
11 | * Contains code for an AABB collider. | ||
12 | * \file OPC_AABBCollider.cpp | ||
13 | * \author Pierre Terdiman | ||
14 | * \date January, 1st, 2002 | ||
15 | */ | ||
16 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
17 | |||
18 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
19 | /** | ||
20 | * Contains an AABB-vs-tree collider. | ||
21 | * | ||
22 | * \class AABBCollider | ||
23 | * \author Pierre Terdiman | ||
24 | * \version 1.3 | ||
25 | * \date January, 1st, 2002 | ||
26 | */ | ||
27 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
28 | |||
29 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
30 | // Precompiled Header | ||
31 | #include "Stdafx.h" | ||
32 | |||
33 | using namespace Opcode; | ||
34 | |||
35 | #include "OPC_BoxBoxOverlap.h" | ||
36 | #include "OPC_TriBoxOverlap.h" | ||
37 | |||
38 | #define SET_CONTACT(prim_index, flag) \ | ||
39 | /* Set contact status */ \ | ||
40 | mFlags |= flag; \ | ||
41 | mTouchedPrimitives->Add(udword(prim_index)); | ||
42 | |||
43 | //! AABB-triangle test | ||
44 | #define AABB_PRIM(prim_index, flag) \ | ||
45 | /* Request vertices from the app */ \ | ||
46 | VertexPointers VP; mIMesh->GetTriangle(VP, prim_index);\ | ||
47 | mLeafVerts[0] = *VP.Vertex[0]; \ | ||
48 | mLeafVerts[1] = *VP.Vertex[1]; \ | ||
49 | mLeafVerts[2] = *VP.Vertex[2]; \ | ||
50 | /* Perform triangle-box overlap test */ \ | ||
51 | if(TriBoxOverlap()) \ | ||
52 | { \ | ||
53 | SET_CONTACT(prim_index, flag) \ | ||
54 | } | ||
55 | |||
56 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
57 | /** | ||
58 | * Constructor. | ||
59 | */ | ||
60 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
61 | AABBCollider::AABBCollider() | ||
62 | { | ||
63 | } | ||
64 | |||
65 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
66 | /** | ||
67 | * Destructor. | ||
68 | */ | ||
69 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
70 | AABBCollider::~AABBCollider() | ||
71 | { | ||
72 | } | ||
73 | |||
74 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
75 | /** | ||
76 | * Generic collision query for generic OPCODE models. After the call, access the results: | ||
77 | * - with GetContactStatus() | ||
78 | * - with GetNbTouchedPrimitives() | ||
79 | * - with GetTouchedPrimitives() | ||
80 | * | ||
81 | * \param cache [in/out] a box cache | ||
82 | * \param box [in] collision AABB in world space | ||
83 | * \param model [in] Opcode model to collide with | ||
84 | * \return true if success | ||
85 | * \warning SCALE NOT SUPPORTED. The matrices must contain rotation & translation parts only. | ||
86 | */ | ||
87 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
88 | bool AABBCollider::Collide(AABBCache& cache, const CollisionAABB& box, const Model& model) | ||
89 | { | ||
90 | // Checkings | ||
91 | if(!Setup(&model)) return false; | ||
92 | |||
93 | // Init collision query | ||
94 | if(InitQuery(cache, box)) return true; | ||
95 | |||
96 | if(!model.HasLeafNodes()) | ||
97 | { | ||
98 | if(model.IsQuantized()) | ||
99 | { | ||
100 | const AABBQuantizedNoLeafTree* Tree = (const AABBQuantizedNoLeafTree*)model.GetTree(); | ||
101 | |||
102 | // Setup dequantization coeffs | ||
103 | mCenterCoeff = Tree->mCenterCoeff; | ||
104 | mExtentsCoeff = Tree->mExtentsCoeff; | ||
105 | |||
106 | // Perform collision query | ||
107 | if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
108 | else _Collide(Tree->GetNodes()); | ||
109 | } | ||
110 | else | ||
111 | { | ||
112 | const AABBNoLeafTree* Tree = (const AABBNoLeafTree*)model.GetTree(); | ||
113 | |||
114 | // Perform collision query | ||
115 | if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
116 | else _Collide(Tree->GetNodes()); | ||
117 | } | ||
118 | } | ||
119 | else | ||
120 | { | ||
121 | if(model.IsQuantized()) | ||
122 | { | ||
123 | const AABBQuantizedTree* Tree = (const AABBQuantizedTree*)model.GetTree(); | ||
124 | |||
125 | // Setup dequantization coeffs | ||
126 | mCenterCoeff = Tree->mCenterCoeff; | ||
127 | mExtentsCoeff = Tree->mExtentsCoeff; | ||
128 | |||
129 | // Perform collision query | ||
130 | if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
131 | else _Collide(Tree->GetNodes()); | ||
132 | } | ||
133 | else | ||
134 | { | ||
135 | const AABBCollisionTree* Tree = (const AABBCollisionTree*)model.GetTree(); | ||
136 | |||
137 | // Perform collision query | ||
138 | if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
139 | else _Collide(Tree->GetNodes()); | ||
140 | } | ||
141 | } | ||
142 | return true; | ||
143 | } | ||
144 | |||
145 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
146 | /** | ||
147 | * Initializes a collision query : | ||
148 | * - reset stats & contact status | ||
149 | * - check temporal coherence | ||
150 | * | ||
151 | * \param cache [in/out] a box cache | ||
152 | * \param box [in] AABB in world space | ||
153 | * \return TRUE if we can return immediately | ||
154 | */ | ||
155 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
156 | BOOL AABBCollider::InitQuery(AABBCache& cache, const CollisionAABB& box) | ||
157 | { | ||
158 | // 1) Call the base method | ||
159 | VolumeCollider::InitQuery(); | ||
160 | |||
161 | // 2) Keep track of the query box | ||
162 | mBox = box; | ||
163 | |||
164 | // 3) Setup destination pointer | ||
165 | mTouchedPrimitives = &cache.TouchedPrimitives; | ||
166 | |||
167 | // 4) Special case: 1-triangle meshes [Opcode 1.3] | ||
168 | if(mCurrentModel && mCurrentModel->HasSingleNode()) | ||
169 | { | ||
170 | if(!SkipPrimitiveTests()) | ||
171 | { | ||
172 | // We simply perform the BV-Prim overlap test each time. We assume single triangle has index 0. | ||
173 | mTouchedPrimitives->Reset(); | ||
174 | |||
175 | // Perform overlap test between the unique triangle and the box (and set contact status if needed) | ||
176 | AABB_PRIM(udword(0), OPC_CONTACT) | ||
177 | |||
178 | // Return immediately regardless of status | ||
179 | return TRUE; | ||
180 | } | ||
181 | } | ||
182 | |||
183 | // 5) Check temporal coherence : | ||
184 | if(TemporalCoherenceEnabled()) | ||
185 | { | ||
186 | // Here we use temporal coherence | ||
187 | // => check results from previous frame before performing the collision query | ||
188 | if(FirstContactEnabled()) | ||
189 | { | ||
190 | // We're only interested in the first contact found => test the unique previously touched face | ||
191 | if(mTouchedPrimitives->GetNbEntries()) | ||
192 | { | ||
193 | // Get index of previously touched face = the first entry in the array | ||
194 | udword PreviouslyTouchedFace = mTouchedPrimitives->GetEntry(0); | ||
195 | |||
196 | // Then reset the array: | ||
197 | // - if the overlap test below is successful, the index we'll get added back anyway | ||
198 | // - if it isn't, then the array should be reset anyway for the normal query | ||
199 | mTouchedPrimitives->Reset(); | ||
200 | |||
201 | // Perform overlap test between the cached triangle and the box (and set contact status if needed) | ||
202 | AABB_PRIM(PreviouslyTouchedFace, OPC_TEMPORAL_CONTACT) | ||
203 | |||
204 | // Return immediately if possible | ||
205 | if(GetContactStatus()) return TRUE; | ||
206 | } | ||
207 | // else no face has been touched during previous query | ||
208 | // => we'll have to perform a normal query | ||
209 | } | ||
210 | else | ||
211 | { | ||
212 | // We're interested in all contacts =>test the new real box N(ew) against the previous fat box P(revious): | ||
213 | if(IsCacheValid(cache) && mBox.IsInside(cache.FatBox)) | ||
214 | { | ||
215 | // - if N is included in P, return previous list | ||
216 | // => we simply leave the list (mTouchedFaces) unchanged | ||
217 | |||
218 | // Set contact status if needed | ||
219 | if(mTouchedPrimitives->GetNbEntries()) mFlags |= OPC_TEMPORAL_CONTACT; | ||
220 | |||
221 | // In any case we don't need to do a query | ||
222 | return TRUE; | ||
223 | } | ||
224 | else | ||
225 | { | ||
226 | // - else do the query using a fat N | ||
227 | |||
228 | // Reset cache since we'll about to perform a real query | ||
229 | mTouchedPrimitives->Reset(); | ||
230 | |||
231 | // Make a fat box so that coherence will work for subsequent frames | ||
232 | mBox.mExtents *= cache.FatCoeff; | ||
233 | |||
234 | // Update cache with query data (signature for cached faces) | ||
235 | cache.FatBox = mBox; | ||
236 | } | ||
237 | } | ||
238 | } | ||
239 | else | ||
240 | { | ||
241 | // Here we don't use temporal coherence => do a normal query | ||
242 | mTouchedPrimitives->Reset(); | ||
243 | } | ||
244 | |||
245 | // 5) Precompute min & max bounds if needed | ||
246 | mMin = box.mCenter - box.mExtents; | ||
247 | mMax = box.mCenter + box.mExtents; | ||
248 | |||
249 | return FALSE; | ||
250 | } | ||
251 | |||
252 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
253 | /** | ||
254 | * Collision query for vanilla AABB trees. | ||
255 | * \param cache [in/out] a box cache | ||
256 | * \param box [in] collision AABB in world space | ||
257 | * \param tree [in] AABB tree | ||
258 | * \return true if success | ||
259 | */ | ||
260 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
261 | bool AABBCollider::Collide(AABBCache& cache, const CollisionAABB& box, const AABBTree* tree) | ||
262 | { | ||
263 | // This is typically called for a scene tree, full of -AABBs-, not full of triangles. | ||
264 | // So we don't really have "primitives" to deal with. Hence it doesn't work with | ||
265 | // "FirstContact" + "TemporalCoherence". | ||
266 | ASSERT( !(FirstContactEnabled() && TemporalCoherenceEnabled()) ); | ||
267 | |||
268 | // Checkings | ||
269 | if(!tree) return false; | ||
270 | |||
271 | // Init collision query | ||
272 | if(InitQuery(cache, box)) return true; | ||
273 | |||
274 | // Perform collision query | ||
275 | _Collide(tree); | ||
276 | |||
277 | return true; | ||
278 | } | ||
279 | |||
280 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
281 | /** | ||
282 | * Checks the AABB completely contains the box. In which case we can end the query sooner. | ||
283 | * \param bc [in] box center | ||
284 | * \param be [in] box extents | ||
285 | * \return true if the AABB contains the whole box | ||
286 | */ | ||
287 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
288 | inline_ BOOL AABBCollider::AABBContainsBox(const Point& bc, const Point& be) | ||
289 | { | ||
290 | if(mMin.x > bc.x - be.x) return FALSE; | ||
291 | if(mMin.y > bc.y - be.y) return FALSE; | ||
292 | if(mMin.z > bc.z - be.z) return FALSE; | ||
293 | |||
294 | if(mMax.x < bc.x + be.x) return FALSE; | ||
295 | if(mMax.y < bc.y + be.y) return FALSE; | ||
296 | if(mMax.z < bc.z + be.z) return FALSE; | ||
297 | |||
298 | return TRUE; | ||
299 | } | ||
300 | |||
301 | #define TEST_BOX_IN_AABB(center, extents) \ | ||
302 | if(AABBContainsBox(center, extents)) \ | ||
303 | { \ | ||
304 | /* Set contact status */ \ | ||
305 | mFlags |= OPC_CONTACT; \ | ||
306 | _Dump(node); \ | ||
307 | return; \ | ||
308 | } | ||
309 | |||
310 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
311 | /** | ||
312 | * Recursive collision query for normal AABB trees. | ||
313 | * \param node [in] current collision node | ||
314 | */ | ||
315 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
316 | void AABBCollider::_Collide(const AABBCollisionNode* node) | ||
317 | { | ||
318 | // Perform AABB-AABB overlap test | ||
319 | if(!AABBAABBOverlap(node->mAABB.mExtents, node->mAABB.mCenter)) return; | ||
320 | |||
321 | TEST_BOX_IN_AABB(node->mAABB.mCenter, node->mAABB.mExtents) | ||
322 | |||
323 | if(node->IsLeaf()) | ||
324 | { | ||
325 | AABB_PRIM(node->GetPrimitive(), OPC_CONTACT) | ||
326 | } | ||
327 | else | ||
328 | { | ||
329 | _Collide(node->GetPos()); | ||
330 | |||
331 | if(ContactFound()) return; | ||
332 | |||
333 | _Collide(node->GetNeg()); | ||
334 | } | ||
335 | } | ||
336 | |||
337 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
338 | /** | ||
339 | * Recursive collision query for normal AABB trees, without primitive tests. | ||
340 | * \param node [in] current collision node | ||
341 | */ | ||
342 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
343 | void AABBCollider::_CollideNoPrimitiveTest(const AABBCollisionNode* node) | ||
344 | { | ||
345 | // Perform AABB-AABB overlap test | ||
346 | if(!AABBAABBOverlap(node->mAABB.mExtents, node->mAABB.mCenter)) return; | ||
347 | |||
348 | TEST_BOX_IN_AABB(node->mAABB.mCenter, node->mAABB.mExtents) | ||
349 | |||
350 | if(node->IsLeaf()) | ||
351 | { | ||
352 | SET_CONTACT(node->GetPrimitive(), OPC_CONTACT) | ||
353 | } | ||
354 | else | ||
355 | { | ||
356 | _CollideNoPrimitiveTest(node->GetPos()); | ||
357 | |||
358 | if(ContactFound()) return; | ||
359 | |||
360 | _CollideNoPrimitiveTest(node->GetNeg()); | ||
361 | } | ||
362 | } | ||
363 | |||
364 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
365 | /** | ||
366 | * Recursive collision query for quantized AABB trees. | ||
367 | * \param node [in] current collision node | ||
368 | */ | ||
369 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
370 | void AABBCollider::_Collide(const AABBQuantizedNode* node) | ||
371 | { | ||
372 | // Dequantize box | ||
373 | const QuantizedAABB& Box = node->mAABB; | ||
374 | const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z); | ||
375 | const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z); | ||
376 | |||
377 | // Perform AABB-AABB overlap test | ||
378 | if(!AABBAABBOverlap(Extents, Center)) return; | ||
379 | |||
380 | TEST_BOX_IN_AABB(Center, Extents) | ||
381 | |||
382 | if(node->IsLeaf()) | ||
383 | { | ||
384 | AABB_PRIM(node->GetPrimitive(), OPC_CONTACT) | ||
385 | } | ||
386 | else | ||
387 | { | ||
388 | _Collide(node->GetPos()); | ||
389 | |||
390 | if(ContactFound()) return; | ||
391 | |||
392 | _Collide(node->GetNeg()); | ||
393 | } | ||
394 | } | ||
395 | |||
396 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
397 | /** | ||
398 | * Recursive collision query for quantized AABB trees, without primitive tests. | ||
399 | * \param node [in] current collision node | ||
400 | */ | ||
401 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
402 | void AABBCollider::_CollideNoPrimitiveTest(const AABBQuantizedNode* node) | ||
403 | { | ||
404 | // Dequantize box | ||
405 | const QuantizedAABB& Box = node->mAABB; | ||
406 | const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z); | ||
407 | const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z); | ||
408 | |||
409 | // Perform AABB-AABB overlap test | ||
410 | if(!AABBAABBOverlap(Extents, Center)) return; | ||
411 | |||
412 | TEST_BOX_IN_AABB(Center, Extents) | ||
413 | |||
414 | if(node->IsLeaf()) | ||
415 | { | ||
416 | SET_CONTACT(node->GetPrimitive(), OPC_CONTACT) | ||
417 | } | ||
418 | else | ||
419 | { | ||
420 | _CollideNoPrimitiveTest(node->GetPos()); | ||
421 | |||
422 | if(ContactFound()) return; | ||
423 | |||
424 | _CollideNoPrimitiveTest(node->GetNeg()); | ||
425 | } | ||
426 | } | ||
427 | |||
428 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
429 | /** | ||
430 | * Recursive collision query for no-leaf AABB trees. | ||
431 | * \param node [in] current collision node | ||
432 | */ | ||
433 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
434 | void AABBCollider::_Collide(const AABBNoLeafNode* node) | ||
435 | { | ||
436 | // Perform AABB-AABB overlap test | ||
437 | if(!AABBAABBOverlap(node->mAABB.mExtents, node->mAABB.mCenter)) return; | ||
438 | |||
439 | TEST_BOX_IN_AABB(node->mAABB.mCenter, node->mAABB.mExtents) | ||
440 | |||
441 | if(node->HasPosLeaf()) { AABB_PRIM(node->GetPosPrimitive(), OPC_CONTACT) } | ||
442 | else _Collide(node->GetPos()); | ||
443 | |||
444 | if(ContactFound()) return; | ||
445 | |||
446 | if(node->HasNegLeaf()) { AABB_PRIM(node->GetNegPrimitive(), OPC_CONTACT) } | ||
447 | else _Collide(node->GetNeg()); | ||
448 | } | ||
449 | |||
450 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
451 | /** | ||
452 | * Recursive collision query for no-leaf AABB trees, without primitive tests. | ||
453 | * \param node [in] current collision node | ||
454 | */ | ||
455 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
456 | void AABBCollider::_CollideNoPrimitiveTest(const AABBNoLeafNode* node) | ||
457 | { | ||
458 | // Perform AABB-AABB overlap test | ||
459 | if(!AABBAABBOverlap(node->mAABB.mExtents, node->mAABB.mCenter)) return; | ||
460 | |||
461 | TEST_BOX_IN_AABB(node->mAABB.mCenter, node->mAABB.mExtents) | ||
462 | |||
463 | if(node->HasPosLeaf()) { SET_CONTACT(node->GetPosPrimitive(), OPC_CONTACT) } | ||
464 | else _CollideNoPrimitiveTest(node->GetPos()); | ||
465 | |||
466 | if(ContactFound()) return; | ||
467 | |||
468 | if(node->HasNegLeaf()) { SET_CONTACT(node->GetNegPrimitive(), OPC_CONTACT) } | ||
469 | else _CollideNoPrimitiveTest(node->GetNeg()); | ||
470 | } | ||
471 | |||
472 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
473 | /** | ||
474 | * Recursive collision query for quantized no-leaf AABB trees. | ||
475 | * \param node [in] current collision node | ||
476 | */ | ||
477 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
478 | void AABBCollider::_Collide(const AABBQuantizedNoLeafNode* node) | ||
479 | { | ||
480 | // Dequantize box | ||
481 | const QuantizedAABB& Box = node->mAABB; | ||
482 | const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z); | ||
483 | const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z); | ||
484 | |||
485 | // Perform AABB-AABB overlap test | ||
486 | if(!AABBAABBOverlap(Extents, Center)) return; | ||
487 | |||
488 | TEST_BOX_IN_AABB(Center, Extents) | ||
489 | |||
490 | if(node->HasPosLeaf()) { AABB_PRIM(node->GetPosPrimitive(), OPC_CONTACT) } | ||
491 | else _Collide(node->GetPos()); | ||
492 | |||
493 | if(ContactFound()) return; | ||
494 | |||
495 | if(node->HasNegLeaf()) { AABB_PRIM(node->GetNegPrimitive(), OPC_CONTACT) } | ||
496 | else _Collide(node->GetNeg()); | ||
497 | } | ||
498 | |||
499 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
500 | /** | ||
501 | * Recursive collision query for quantized no-leaf AABB trees, without primitive tests. | ||
502 | * \param node [in] current collision node | ||
503 | */ | ||
504 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
505 | void AABBCollider::_CollideNoPrimitiveTest(const AABBQuantizedNoLeafNode* node) | ||
506 | { | ||
507 | // Dequantize box | ||
508 | const QuantizedAABB& Box = node->mAABB; | ||
509 | const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z); | ||
510 | const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z); | ||
511 | |||
512 | // Perform AABB-AABB overlap test | ||
513 | if(!AABBAABBOverlap(Extents, Center)) return; | ||
514 | |||
515 | TEST_BOX_IN_AABB(Center, Extents) | ||
516 | |||
517 | if(node->HasPosLeaf()) { SET_CONTACT(node->GetPosPrimitive(), OPC_CONTACT) } | ||
518 | else _CollideNoPrimitiveTest(node->GetPos()); | ||
519 | |||
520 | if(ContactFound()) return; | ||
521 | |||
522 | if(node->HasNegLeaf()) { SET_CONTACT(node->GetNegPrimitive(), OPC_CONTACT) } | ||
523 | else _CollideNoPrimitiveTest(node->GetNeg()); | ||
524 | } | ||
525 | |||
526 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
527 | /** | ||
528 | * Recursive collision query for vanilla AABB trees. | ||
529 | * \param node [in] current collision node | ||
530 | */ | ||
531 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
532 | void AABBCollider::_Collide(const AABBTreeNode* node) | ||
533 | { | ||
534 | // Perform AABB-AABB overlap test | ||
535 | Point Center, Extents; | ||
536 | node->GetAABB()->GetCenter(Center); | ||
537 | node->GetAABB()->GetExtents(Extents); | ||
538 | if(!AABBAABBOverlap(Center, Extents)) return; | ||
539 | |||
540 | if(node->IsLeaf() || AABBContainsBox(Center, Extents)) | ||
541 | { | ||
542 | mFlags |= OPC_CONTACT; | ||
543 | mTouchedPrimitives->Add(node->GetPrimitives(), node->GetNbPrimitives()); | ||
544 | } | ||
545 | else | ||
546 | { | ||
547 | _Collide(node->GetPos()); | ||
548 | _Collide(node->GetNeg()); | ||
549 | } | ||
550 | } | ||
551 | |||
552 | |||
553 | |||
554 | |||
555 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
556 | /** | ||
557 | * Constructor. | ||
558 | */ | ||
559 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
560 | HybridAABBCollider::HybridAABBCollider() | ||
561 | { | ||
562 | } | ||
563 | |||
564 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
565 | /** | ||
566 | * Destructor. | ||
567 | */ | ||
568 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
569 | HybridAABBCollider::~HybridAABBCollider() | ||
570 | { | ||
571 | } | ||
572 | |||
573 | bool HybridAABBCollider::Collide(AABBCache& cache, const CollisionAABB& box, const HybridModel& model) | ||
574 | { | ||
575 | // We don't want primitive tests here! | ||
576 | mFlags |= OPC_NO_PRIMITIVE_TESTS; | ||
577 | |||
578 | // Checkings | ||
579 | if(!Setup(&model)) return false; | ||
580 | |||
581 | // Init collision query | ||
582 | if(InitQuery(cache, box)) return true; | ||
583 | |||
584 | // Special case for 1-leaf trees | ||
585 | if(mCurrentModel && mCurrentModel->HasSingleNode()) | ||
586 | { | ||
587 | // Here we're supposed to perform a normal query, except our tree has a single node, i.e. just a few triangles | ||
588 | udword Nb = mIMesh->GetNbTriangles(); | ||
589 | |||
590 | // Loop through all triangles | ||
591 | for(udword i=0;i<Nb;i++) | ||
592 | { | ||
593 | AABB_PRIM(i, OPC_CONTACT) | ||
594 | } | ||
595 | return true; | ||
596 | } | ||
597 | |||
598 | // Override destination array since we're only going to get leaf boxes here | ||
599 | mTouchedBoxes.Reset(); | ||
600 | mTouchedPrimitives = &mTouchedBoxes; | ||
601 | |||
602 | // Now, do the actual query against leaf boxes | ||
603 | if(!model.HasLeafNodes()) | ||
604 | { | ||
605 | if(model.IsQuantized()) | ||
606 | { | ||
607 | const AABBQuantizedNoLeafTree* Tree = (const AABBQuantizedNoLeafTree*)model.GetTree(); | ||
608 | |||
609 | // Setup dequantization coeffs | ||
610 | mCenterCoeff = Tree->mCenterCoeff; | ||
611 | mExtentsCoeff = Tree->mExtentsCoeff; | ||
612 | |||
613 | // Perform collision query - we don't want primitive tests here! | ||
614 | _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
615 | } | ||
616 | else | ||
617 | { | ||
618 | const AABBNoLeafTree* Tree = (const AABBNoLeafTree*)model.GetTree(); | ||
619 | |||
620 | // Perform collision query - we don't want primitive tests here! | ||
621 | _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
622 | } | ||
623 | } | ||
624 | else | ||
625 | { | ||
626 | if(model.IsQuantized()) | ||
627 | { | ||
628 | const AABBQuantizedTree* Tree = (const AABBQuantizedTree*)model.GetTree(); | ||
629 | |||
630 | // Setup dequantization coeffs | ||
631 | mCenterCoeff = Tree->mCenterCoeff; | ||
632 | mExtentsCoeff = Tree->mExtentsCoeff; | ||
633 | |||
634 | // Perform collision query - we don't want primitive tests here! | ||
635 | _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
636 | } | ||
637 | else | ||
638 | { | ||
639 | const AABBCollisionTree* Tree = (const AABBCollisionTree*)model.GetTree(); | ||
640 | |||
641 | // Perform collision query - we don't want primitive tests here! | ||
642 | _CollideNoPrimitiveTest(Tree->GetNodes()); | ||
643 | } | ||
644 | } | ||
645 | |||
646 | // We only have a list of boxes so far | ||
647 | if(GetContactStatus()) | ||
648 | { | ||
649 | // Reset contact status, since it currently only reflects collisions with leaf boxes | ||
650 | Collider::InitQuery(); | ||
651 | |||
652 | // Change dest container so that we can use built-in overlap tests and get collided primitives | ||
653 | cache.TouchedPrimitives.Reset(); | ||
654 | mTouchedPrimitives = &cache.TouchedPrimitives; | ||
655 | |||
656 | // Read touched leaf boxes | ||
657 | udword Nb = mTouchedBoxes.GetNbEntries(); | ||
658 | const udword* Touched = mTouchedBoxes.GetEntries(); | ||
659 | |||
660 | const LeafTriangles* LT = model.GetLeafTriangles(); | ||
661 | const udword* Indices = model.GetIndices(); | ||
662 | |||
663 | // Loop through touched leaves | ||
664 | while(Nb--) | ||
665 | { | ||
666 | const LeafTriangles& CurrentLeaf = LT[*Touched++]; | ||
667 | |||
668 | // Each leaf box has a set of triangles | ||
669 | udword NbTris = CurrentLeaf.GetNbTriangles(); | ||
670 | if(Indices) | ||
671 | { | ||
672 | const udword* T = &Indices[CurrentLeaf.GetTriangleIndex()]; | ||
673 | |||
674 | // Loop through triangles and test each of them | ||
675 | while(NbTris--) | ||
676 | { | ||
677 | udword TriangleIndex = *T++; | ||
678 | AABB_PRIM(TriangleIndex, OPC_CONTACT) | ||
679 | } | ||
680 | } | ||
681 | else | ||
682 | { | ||
683 | udword BaseIndex = CurrentLeaf.GetTriangleIndex(); | ||
684 | |||
685 | // Loop through triangles and test each of them | ||
686 | while(NbTris--) | ||
687 | { | ||
688 | udword TriangleIndex = BaseIndex++; | ||
689 | AABB_PRIM(TriangleIndex, OPC_CONTACT) | ||
690 | } | ||
691 | } | ||
692 | } | ||
693 | } | ||
694 | |||
695 | return true; | ||
696 | } | ||