1 | #ifndef _ViewCell_H__
|
---|
2 | #define _ViewCell_H__
|
---|
3 |
|
---|
4 | #include "Mesh.h"
|
---|
5 | #include "Containers.h"
|
---|
6 | #include "Ray.h"
|
---|
7 | #include "Statistics.h"
|
---|
8 | #include "Material.h"
|
---|
9 | #include "gzstream.h"
|
---|
10 |
|
---|
11 |
|
---|
12 | namespace GtpVisibilityPreprocessor {
|
---|
13 |
|
---|
14 | struct Triangle3;
|
---|
15 |
|
---|
16 | class BspInterior;
|
---|
17 | class BspPvs;
|
---|
18 | class BspLeaf;
|
---|
19 | class VspLeaf;
|
---|
20 | class KdLeaf;
|
---|
21 | class ViewCellInterior;
|
---|
22 | class MergeCandidate;
|
---|
23 | class ViewCellsManager;
|
---|
24 | class ViewCellLeaf;
|
---|
25 |
|
---|
26 |
|
---|
27 |
|
---|
28 | /** Statistics for a view cell partition.
|
---|
29 | */
|
---|
30 |
|
---|
31 | class ViewCellsStatistics: public StatisticsBase
|
---|
32 | {
|
---|
33 | public:
|
---|
34 |
|
---|
35 | /// number of view cells
|
---|
36 | int viewCells;
|
---|
37 | /// size of the PVS
|
---|
38 | int pvsSize;
|
---|
39 | /// largest PVS of all view cells
|
---|
40 | int maxPvs;
|
---|
41 | /// smallest PVS of all view cells
|
---|
42 | int minPvs;
|
---|
43 | /// view cells with empty PVS
|
---|
44 | int emptyPvs;
|
---|
45 | /// number of leaves covering the view space
|
---|
46 | int leaves;
|
---|
47 | /// largest number of leaves covered by one view cell
|
---|
48 | int maxLeaves;
|
---|
49 | /// number of invalid view cells
|
---|
50 | int invalid;
|
---|
51 |
|
---|
52 | // Constructor
|
---|
53 | ViewCellsStatistics()
|
---|
54 | {
|
---|
55 | Reset();
|
---|
56 | }
|
---|
57 |
|
---|
58 | double AvgLeaves() const {return (double)leaves / (double)viewCells;};
|
---|
59 | double AvgPvs() const {return (double)pvsSize / (double)viewCells;};
|
---|
60 |
|
---|
61 | void Reset()
|
---|
62 | {
|
---|
63 | viewCells = 0;
|
---|
64 | pvsSize = 0;
|
---|
65 | maxPvs = 0;
|
---|
66 |
|
---|
67 | minPvs = 999999;
|
---|
68 | emptyPvs = 0;
|
---|
69 | leaves = 0;
|
---|
70 | maxLeaves = 0;
|
---|
71 | invalid = 0;
|
---|
72 | }
|
---|
73 |
|
---|
74 | void Print(ostream &app) const;
|
---|
75 |
|
---|
76 | friend ostream &operator<<(ostream &s, const ViewCellsStatistics &stat)
|
---|
77 | {
|
---|
78 | stat.Print(s);
|
---|
79 | return s;
|
---|
80 | }
|
---|
81 | };
|
---|
82 |
|
---|
83 |
|
---|
84 | /**
|
---|
85 | A view cell. View cells are regions in space. The visibility informations,
|
---|
86 | i.e., the primitives seen by the view cell are stored in a PVs.
|
---|
87 | A view cell can be represented in many different ways, e.g.,
|
---|
88 | a mesh representation.
|
---|
89 | */
|
---|
90 | class ViewCell: public MeshInstance
|
---|
91 | {
|
---|
92 | friend class ViewCellsTree;
|
---|
93 | friend class ViewCellsManager;
|
---|
94 |
|
---|
95 | public:
|
---|
96 | ViewCell();
|
---|
97 |
|
---|
98 | /** Constructor taking a mesh representing the shape of the viewcell.
|
---|
99 | */
|
---|
100 | ViewCell(Mesh *mesh);
|
---|
101 |
|
---|
102 | /** Default destructor.
|
---|
103 | */
|
---|
104 | virtual ~ViewCell();
|
---|
105 | /** Returns Pvs.
|
---|
106 | */
|
---|
107 | const ObjectPvs &GetPvs() const;
|
---|
108 | /** Returns pvs.
|
---|
109 | */
|
---|
110 | ObjectPvs &GetPvs();
|
---|
111 | /** Completely substitutes the pvs.
|
---|
112 | */
|
---|
113 | void SetPvs(const ObjectPvs &pvs);
|
---|
114 | /** Type of view cells.
|
---|
115 | */
|
---|
116 | int Type() const;
|
---|
117 | /** Adds a passing ray to the passing ray container.
|
---|
118 | */
|
---|
119 | void AddPassingRay(const Ray &ray, const int contributions);
|
---|
120 | /** Returns volume of the view cell.
|
---|
121 | */
|
---|
122 | float GetVolume() const;
|
---|
123 | /** Returns area of the view cell.
|
---|
124 | */
|
---|
125 | float GetArea() const;
|
---|
126 | /** Sets the volume of the view cell.
|
---|
127 | */
|
---|
128 | void SetVolume(float volume);
|
---|
129 | /** Sets the area of the view cell.
|
---|
130 | */
|
---|
131 | void SetArea(float area);
|
---|
132 | /** if this view cell is the root of a view cell hierarchy
|
---|
133 | */
|
---|
134 | bool IsRoot() const;
|
---|
135 | /** Returns parent view cell.
|
---|
136 | */
|
---|
137 | ViewCellInterior *GetParent() const;
|
---|
138 | /** Sets parent of this view cell.
|
---|
139 | */
|
---|
140 | void SetParent(ViewCellInterior *parent);
|
---|
141 | /** Sets the mesh for this view cell.
|
---|
142 | */
|
---|
143 | void SetMesh(Mesh *mesh);
|
---|
144 |
|
---|
145 | /** Sets this view cell to be a valid view cell according to some criteria.
|
---|
146 | */
|
---|
147 | void SetValid(const bool valid);
|
---|
148 | /** Returns true if this view cell is considered to be valid according to
|
---|
149 | some criteria.
|
---|
150 | */
|
---|
151 | bool GetValid() const;
|
---|
152 |
|
---|
153 | /** Returns estimated render cost of this view cell.
|
---|
154 | */
|
---|
155 | float GetRenderCost() const;
|
---|
156 |
|
---|
157 | /** set color for visiualizations.
|
---|
158 | */
|
---|
159 | void SetColor(const RgbColor &color);
|
---|
160 |
|
---|
161 | /** get color for visualuzations.
|
---|
162 | */
|
---|
163 | RgbColor GetColor() const;
|
---|
164 |
|
---|
165 | /** Adds a sample to the pvs.
|
---|
166 | @param sample the sample to be added
|
---|
167 | @param pdf a continuos measure of visibility
|
---|
168 | @param contribution returns the contribution of this sample to the pvs
|
---|
169 | */
|
---|
170 | bool AddPvsSample(Intersectable *sample, const float pdf, float &contribution);
|
---|
171 |
|
---|
172 | /// Rays piercing this view cell.
|
---|
173 | //RayContainer mPiercingRays;
|
---|
174 |
|
---|
175 | /** if this is a view cell correspending to a leaf in a hierarchy.
|
---|
176 | */
|
---|
177 | virtual bool IsLeaf() const = 0;
|
---|
178 |
|
---|
179 | static bool SmallerPvs(const ViewCell *a, const ViewCell *b)
|
---|
180 | {
|
---|
181 | // HACK: take scalar value because pvs may not have been stored properly
|
---|
182 | #if 1
|
---|
183 | return a->mPvsSize < b->mPvsSize;
|
---|
184 | #else
|
---|
185 | return a->GetPvs().CountObjectsInPvs() < b->GetPvs().CountObjectsInPvs();
|
---|
186 | #endif
|
---|
187 | }
|
---|
188 |
|
---|
189 | static bool SmallerRenderCost(const ViewCell *a, const ViewCell *b)
|
---|
190 | {
|
---|
191 | return a->GetRenderCost() < b->GetRenderCost();
|
---|
192 | }
|
---|
193 |
|
---|
194 | static bool LargerRenderCost(const ViewCell *a, const ViewCell *b)
|
---|
195 | {
|
---|
196 | return a->GetRenderCost() > b->GetRenderCost();
|
---|
197 | }
|
---|
198 |
|
---|
199 | /** Sets merge cost used for merging this view cell from other cells.
|
---|
200 | @hack The function is available for leaves also to have a common interface,
|
---|
201 | but it should be less than zero for leaves.
|
---|
202 | */
|
---|
203 | void SetMergeCost(const float mergeCost);
|
---|
204 |
|
---|
205 | /** Returns merge cost needed to merge this leaf from other cells.
|
---|
206 | @hack The function is available for leaves also to have a common interface,
|
---|
207 | but it should be less than zero for leaves.
|
---|
208 | */
|
---|
209 | float GetMergeCost() const;
|
---|
210 |
|
---|
211 |
|
---|
212 | //////////
|
---|
213 | //-- mailing stuff
|
---|
214 |
|
---|
215 | static void NewMail(const int reserve = 1)
|
---|
216 | {
|
---|
217 | sMailId += sReservedMailboxes;
|
---|
218 | sReservedMailboxes = reserve;
|
---|
219 | }
|
---|
220 |
|
---|
221 | void Mail() { mMailbox = sMailId; }
|
---|
222 | bool Mailed() const { return mMailbox == sMailId; }
|
---|
223 |
|
---|
224 | void Mail(const int mailbox) { mMailbox = sMailId + mailbox; }
|
---|
225 | bool Mailed(const int mailbox) const { return mMailbox == sMailId + mailbox; }
|
---|
226 |
|
---|
227 | int IncMail() { return ++ mMailbox - sMailId; }
|
---|
228 |
|
---|
229 |
|
---|
230 | // last mail id -> warning not thread safe!
|
---|
231 | // both mailId and mailbox should be unique for each thread!!!
|
---|
232 | static int sMailId;
|
---|
233 | static int sReservedMailboxes;
|
---|
234 |
|
---|
235 |
|
---|
236 | protected:
|
---|
237 |
|
---|
238 | /// parent view cell in the view cell hierarchy
|
---|
239 | ViewCellInterior *mParent;
|
---|
240 | /// the potentially visible objects
|
---|
241 | ObjectPvs mPvs;
|
---|
242 | /// the volume of this view cell
|
---|
243 | float mVolume;
|
---|
244 | /// the area of this view cell
|
---|
245 | float mArea;
|
---|
246 | /// the cost that were paid for merging this view cells from two others.
|
---|
247 | float mMergeCost;
|
---|
248 | /// if the view cell is valid view space
|
---|
249 | bool mValid;
|
---|
250 | /// color used for consistent visualization
|
---|
251 | RgbColor mColor;
|
---|
252 | /// store pvs size, used for evaluation purpose when pvss are stored only in the leaves
|
---|
253 | int mPvsSize;
|
---|
254 | /** stores number of entries in pvs
|
---|
255 | this variable has the same value as mPvsSize for object pvs,
|
---|
256 | but usually not for kd cell based pvs
|
---|
257 | */
|
---|
258 | int mEntriesInPvs;
|
---|
259 | /** if the pvs size scalar (+ entries into pvs)
|
---|
260 | is up to date and corresponding to the real pvs size
|
---|
261 | */
|
---|
262 | bool mPvsSizeValid;
|
---|
263 | };
|
---|
264 |
|
---|
265 |
|
---|
266 | class ViewCellInterior: public ViewCell
|
---|
267 | {
|
---|
268 | friend class ViewCellsManager;
|
---|
269 |
|
---|
270 | public:
|
---|
271 | ViewCellInterior();
|
---|
272 | ~ViewCellInterior();
|
---|
273 |
|
---|
274 | ViewCellInterior(Mesh *mesh);
|
---|
275 |
|
---|
276 | /** Sets pointer from parent to child and vice versa.
|
---|
277 | */
|
---|
278 | void SetupChildLink(ViewCell *l);
|
---|
279 | void ReplaceChildLink(ViewCell *prev, ViewCell *cur);
|
---|
280 |
|
---|
281 | void RemoveChildLink(ViewCell *l);
|
---|
282 | bool IsLeaf() const;
|
---|
283 |
|
---|
284 | void SetCost(const float c) {
|
---|
285 | mCost = c;
|
---|
286 | }
|
---|
287 |
|
---|
288 | float GetCost() const {
|
---|
289 | return mCost;
|
---|
290 | }
|
---|
291 |
|
---|
292 | ViewCellContainer mChildren;
|
---|
293 |
|
---|
294 | protected:
|
---|
295 | /** overall cost resulting from the merge */
|
---|
296 | float mCost;
|
---|
297 | };
|
---|
298 |
|
---|
299 |
|
---|
300 | /**
|
---|
301 | Leaf of the view cell.
|
---|
302 | */
|
---|
303 | class ViewCellLeaf: public ViewCell
|
---|
304 | {
|
---|
305 | public:
|
---|
306 | ViewCellLeaf() { mActiveViewCell = this; }
|
---|
307 | ViewCellLeaf(Mesh *mesh):
|
---|
308 | ViewCell(mesh) { mActiveViewCell = this; }
|
---|
309 |
|
---|
310 | bool IsLeaf() const
|
---|
311 | {
|
---|
312 | return true;
|
---|
313 | }
|
---|
314 |
|
---|
315 | /** Returns active view cell, i.e. this view cell or
|
---|
316 | a parent view cell which is set as active view cell.
|
---|
317 | */
|
---|
318 | ViewCell *GetActiveViewCell() const
|
---|
319 | { return mActiveViewCell; }
|
---|
320 |
|
---|
321 | /** Sets this view cell to be an active view cell.
|
---|
322 | */
|
---|
323 | void SetActiveViewCell(ViewCell *vc)
|
---|
324 | { mActiveViewCell = vc;}
|
---|
325 |
|
---|
326 | /** points to the currently active view cell. This is the
|
---|
327 | view cell representing the current brach.
|
---|
328 | */
|
---|
329 | ViewCell *mActiveViewCell;
|
---|
330 | };
|
---|
331 |
|
---|
332 | /** Leaf of the view cell hierarchy corresponding
|
---|
333 | to a leaf in a spatial hierarchy.
|
---|
334 | */
|
---|
335 | template<typename T>
|
---|
336 | class HierarchyLeafViewCell: public ViewCellLeaf
|
---|
337 | {
|
---|
338 | public:
|
---|
339 |
|
---|
340 | HierarchyLeafViewCell<T>(): ViewCellLeaf() { }
|
---|
341 | HierarchyLeafViewCell<T>(Mesh *mesh):
|
---|
342 | ViewCellLeaf(mesh) { }
|
---|
343 |
|
---|
344 | bool IsLeaf() const
|
---|
345 | {
|
---|
346 | return true;
|
---|
347 | }
|
---|
348 |
|
---|
349 | /// Leaves of some hierarchy which contains this view cell.
|
---|
350 | vector<T> mLeaves;
|
---|
351 | };
|
---|
352 |
|
---|
353 |
|
---|
354 | typedef HierarchyLeafViewCell<VspLeaf *> VspViewCell;
|
---|
355 | typedef HierarchyLeafViewCell<BspLeaf *> BspViewCell;
|
---|
356 | typedef HierarchyLeafViewCell<KdLeaf *> KdViewCell;
|
---|
357 |
|
---|
358 |
|
---|
359 |
|
---|
360 |
|
---|
361 | class ViewCellsTree
|
---|
362 | {
|
---|
363 | friend class ViewCellsManager;
|
---|
364 | friend class ViewCellsParseHandlers;
|
---|
365 |
|
---|
366 | public:
|
---|
367 | ViewCellsTree();
|
---|
368 | /** View cells tree constructor taking a view cell mnanager as parameter
|
---|
369 | */
|
---|
370 | ViewCellsTree(ViewCellsManager *vcm);
|
---|
371 | ~ViewCellsTree();
|
---|
372 |
|
---|
373 | /** Returns number of leaves this view cell consists of.
|
---|
374 | */
|
---|
375 | int GetNumInitialViewCells(ViewCell *vc) const;
|
---|
376 |
|
---|
377 | /** Collects leaves corresponding to a view cell.
|
---|
378 | */
|
---|
379 | void CollectLeaves(ViewCell *vc, ViewCellContainer &leaves) const;
|
---|
380 |
|
---|
381 | /** Merges view cells according to some cost heuristics.
|
---|
382 | */
|
---|
383 | int ConstructMergeTree(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
384 |
|
---|
385 | /** Refines view cells using shuffling, i.e., border leaves
|
---|
386 | of two view cells are exchanged if the resulting view cells
|
---|
387 | are tested to be "better" than the old ones.
|
---|
388 | @returns number of refined view cells
|
---|
389 | */
|
---|
390 | int RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
391 |
|
---|
392 | /** Assign colors to the viewcells so that they can be renderered interactively without
|
---|
393 | color flickering.
|
---|
394 | */
|
---|
395 | void AssignRandomColors();
|
---|
396 |
|
---|
397 | /** Updates view cell stats for this particular view cell.
|
---|
398 | */
|
---|
399 | void UpdateViewCellsStats(ViewCell *vc, ViewCellsStatistics &vcStat);
|
---|
400 |
|
---|
401 | /** Get costs resulting from each merge step.
|
---|
402 | */
|
---|
403 | void GetCostFunction(vector<float> &costFunction);
|
---|
404 |
|
---|
405 | /** Returns storage cost resulting from each merge step.
|
---|
406 | */
|
---|
407 | void GetStorageFunction(vector<int> &storageCost);
|
---|
408 |
|
---|
409 | /** Returns optimal set of view cells for a given number of view cells.
|
---|
410 | */
|
---|
411 | void CollectBestViewCellSet(ViewCellContainer &viewCells, const int numViewCells);
|
---|
412 |
|
---|
413 | /** Root of view cells tree.
|
---|
414 | */
|
---|
415 | ViewCell *GetRoot() const;
|
---|
416 |
|
---|
417 | /** Returns pvs of view cell.
|
---|
418 | @note pvs is returned per reference if tree is not compressed,
|
---|
419 | per copy else.
|
---|
420 | */
|
---|
421 | void GetPvs(ViewCell *vc, ObjectPvs &pvs) const;
|
---|
422 |
|
---|
423 | /** Returns pvs size (i.e. the number of stored objects)
|
---|
424 | */
|
---|
425 | int GetPvsSize(ViewCell *vc) const;
|
---|
426 |
|
---|
427 | /** Returns number of entries associated with this view cell.
|
---|
428 |
|
---|
429 | This returns the same value as the "GetPvsSize" function for object pvs
|
---|
430 | but most likely different values if we use object space grouping.
|
---|
431 | E.g., using bounding volumes.
|
---|
432 | */
|
---|
433 | int GetPvsEntries(ViewCell *vc) const;
|
---|
434 |
|
---|
435 | /** Returns the number of physically stored entries in the view cells sub tree.
|
---|
436 | This can vary based on the current storage method
|
---|
437 | */
|
---|
438 | int CountStoredPvsEntries(ViewCell *root) const;
|
---|
439 |
|
---|
440 | /** Returns memory cost of this view cell.
|
---|
441 | */
|
---|
442 | float GetMemoryCost(ViewCell *vc) const;
|
---|
443 |
|
---|
444 | /** Sets method of storage for view cells.
|
---|
445 | */
|
---|
446 | void SetViewCellsStorage(int type);
|
---|
447 |
|
---|
448 | /** pvs storage methods
|
---|
449 | */
|
---|
450 | enum {PVS_IN_INTERIORS, COMPRESSED, PVS_IN_LEAVES};
|
---|
451 |
|
---|
452 | /** If view cells in this tree have compressed pvs.
|
---|
453 | */
|
---|
454 | int ViewCellsStorage() const;
|
---|
455 |
|
---|
456 | /** Returns active view cell that is in the path of this view cell.
|
---|
457 | */
|
---|
458 | ViewCell *GetActiveViewCell(ViewCellLeaf *vc) const;
|
---|
459 |
|
---|
460 | /** Sets the leaves to be the currently active view cells.
|
---|
461 | */
|
---|
462 | void SetActiveSetToLeaves();
|
---|
463 |
|
---|
464 | /** Propagates pvs up the tree to the root and downwards the tree.
|
---|
465 | */
|
---|
466 | void PropagatePvs(ViewCell *vc);
|
---|
467 |
|
---|
468 | /** Exports view cells to file.
|
---|
469 | */
|
---|
470 | bool Export(OUT_STREAM &stream, const bool exportPvs = false);
|
---|
471 |
|
---|
472 | /** Export statistics of this view cell tree.
|
---|
473 | */
|
---|
474 | void ExportStats(const string &mergeStats);
|
---|
475 |
|
---|
476 | /** Sets root of hierarchy.
|
---|
477 | */
|
---|
478 | void SetRoot(ViewCell *root);
|
---|
479 |
|
---|
480 | /** Assignes unique ids to view cells.
|
---|
481 | */
|
---|
482 | void CreateUniqueViewCellsIds();
|
---|
483 |
|
---|
484 | /** Resets pvs of whole tree.
|
---|
485 | */
|
---|
486 | void ResetPvs();
|
---|
487 |
|
---|
488 | /** Counts pvs of the view cell taking the kd cells into account.
|
---|
489 | */
|
---|
490 | int CountKdPvs(const ViewCellLeaf *vc) const;
|
---|
491 |
|
---|
492 | /** Sets pointer to view cells manager.
|
---|
493 | */
|
---|
494 | void SetViewCellsManager(ViewCellsManager *vcm);
|
---|
495 |
|
---|
496 | void Update();
|
---|
497 |
|
---|
498 | protected:
|
---|
499 |
|
---|
500 | /** Reads the environment and sets member variables.
|
---|
501 | */
|
---|
502 | void ReadEnvironment();
|
---|
503 |
|
---|
504 | /////////////////////////////////////////////////////////////////
|
---|
505 | // merge related stuff //
|
---|
506 | /////////////////////////////////////////////////////////////////
|
---|
507 |
|
---|
508 | /** Computes render cost of the merged pvs.
|
---|
509 | */
|
---|
510 | float ComputeMergedPvsCost(const ObjectPvs &pvs1, const ObjectPvs &pvs2) const;
|
---|
511 |
|
---|
512 | /** Returns cost of this leaf according to current heuristics.
|
---|
513 | */
|
---|
514 | float GetCostHeuristics(ViewCell *vc) const;
|
---|
515 |
|
---|
516 | /** Returns cost of leaf.
|
---|
517 | */
|
---|
518 | float GetRenderCost(ViewCell *vc) const;
|
---|
519 |
|
---|
520 | /** Evaluates the merge cost of this merge candidate pair.
|
---|
521 | */
|
---|
522 | void EvalMergeCost(MergeCandidate &mc) const;
|
---|
523 |
|
---|
524 | /** Variance of leaf.
|
---|
525 | */
|
---|
526 | float GetVariance(ViewCell *vc) const;
|
---|
527 |
|
---|
528 | /** Standard deviation of leaf.
|
---|
529 | */
|
---|
530 | float GetDeviation(ViewCell *vc) const;
|
---|
531 |
|
---|
532 | /** Tries to set this merge candidate to valid.
|
---|
533 | @returns false if both view cells are the same
|
---|
534 | */
|
---|
535 | bool ValidateMergeCandidate(MergeCandidate &mc) const;
|
---|
536 |
|
---|
537 | /** Merge view cells of leaves l1 and l2.
|
---|
538 | @returns difference in pvs size
|
---|
539 | */
|
---|
540 | ViewCellInterior *MergeViewCells(ViewCell *l, ViewCell *r, int &pvsDiff); //const;
|
---|
541 |
|
---|
542 | /** Shuffles, i.e. takes border leaf from view cell 1 and adds it
|
---|
543 | to view cell 2.
|
---|
544 | */
|
---|
545 | void ShuffleLeaf(ViewCell *leaf, ViewCellInterior *vc1, ViewCellInterior *vc2) const;
|
---|
546 |
|
---|
547 | /** Shuffles the leaves, i.e., tests if exchanging
|
---|
548 | the leaves helps in improving the view cells.
|
---|
549 | */
|
---|
550 | bool ShuffleLeaves(MergeCandidate &mc) const;
|
---|
551 |
|
---|
552 | /** Calculates cost for merge of view cell 1 and 2.
|
---|
553 | */
|
---|
554 | float EvalShuffleCost(ViewCell *leaf,
|
---|
555 | ViewCellInterior *vc1,
|
---|
556 | ViewCellInterior *vc2) const;
|
---|
557 |
|
---|
558 | /** Exports a snapshot of the merged view cells to disc.
|
---|
559 | */
|
---|
560 | void ExportMergedViewCells(ViewCellContainer &viewCells,
|
---|
561 | const ObjectContainer &objects,
|
---|
562 | const int numNewViewCells);
|
---|
563 |
|
---|
564 | /** Merge queue must be reset after some time because expected value
|
---|
565 | may not be valid.
|
---|
566 | */
|
---|
567 | void ResetMergeQueue();
|
---|
568 |
|
---|
569 | /** Updates the current cut of view cells.
|
---|
570 | @returns number of newly merged view cells
|
---|
571 | */
|
---|
572 | int UpdateActiveViewCells(ViewCellContainer &viewCells);
|
---|
573 |
|
---|
574 | /** Helper function pullling pvs as high up in the tree as possible.
|
---|
575 | */
|
---|
576 | void PullUpVisibility(ViewCellInterior *interior);
|
---|
577 |
|
---|
578 | /** Compress pvs of view cell and children.
|
---|
579 | */
|
---|
580 | void CompressViewCellsPvs(ViewCell *root);
|
---|
581 |
|
---|
582 | /** Returns memory usage of view cells.
|
---|
583 | */
|
---|
584 | float GetMemUsage() const;
|
---|
585 |
|
---|
586 | /** Exports single view cell.
|
---|
587 | NOTE: should be in exporter!!
|
---|
588 | */
|
---|
589 | void ExportViewCell(ViewCell *viewCell, OUT_STREAM &stream, const bool exportPvs);
|
---|
590 |
|
---|
591 | /** Exports pvs of a view cell.
|
---|
592 | */
|
---|
593 | void ExportPvs(ViewCell *viewCell, OUT_STREAM &stream);
|
---|
594 |
|
---|
595 | /** Counts the logical number of entries in the pvs this view cell.
|
---|
596 | The pvs is assumed to be stored using lossless compression.
|
---|
597 | */
|
---|
598 | int GetEntriesInPvsForCompressedStorage(ViewCell *vc) const;
|
---|
599 |
|
---|
600 | /** Computes pvs size of this view cell.
|
---|
601 | The pvs is assumed to be stored using lossless compression.
|
---|
602 | */
|
---|
603 | int GetPvsSizeForCompressedStorage(ViewCell *vc) const;
|
---|
604 |
|
---|
605 | /** Computes pvs size of this view cell.
|
---|
606 | The pvs is assumed to be stored in the leaves.
|
---|
607 | */
|
---|
608 | int GetPvsSizeForLeafStorage(ViewCell *vc) const;
|
---|
609 |
|
---|
610 | /** Counts the logical number of entries in the pvs this view cell.
|
---|
611 | The pvs is assumed to be stored using the leaves.
|
---|
612 | */
|
---|
613 | int GetEntriesInPvsForLeafStorage(ViewCell *vc) const;
|
---|
614 |
|
---|
615 | /** Update stats for the log.
|
---|
616 | */
|
---|
617 | void UpdateStats(ofstream &stats,
|
---|
618 | const int pass,
|
---|
619 | const int viewCells,
|
---|
620 | const float renderCostDecrease,
|
---|
621 | const float totalRenderCost,
|
---|
622 | const int currentPvs,
|
---|
623 | const float expectedCost,
|
---|
624 | const float avgRenderCost,
|
---|
625 | const float deviation,
|
---|
626 | const int totalPvs,
|
---|
627 | const int entriesInPvs,
|
---|
628 | const float memoryCost,
|
---|
629 | const int pvsSizeDecr,
|
---|
630 | const float volume);
|
---|
631 |
|
---|
632 |
|
---|
633 | //////////////////////////////////////
|
---|
634 |
|
---|
635 | /// if the view cell tree hold compressed pvs
|
---|
636 | int mViewCellsStorage;
|
---|
637 | /// pointer to the view cells manager
|
---|
638 | ViewCellsManager *mViewCellsManager;
|
---|
639 | /// the root of the view cells hierarchy
|
---|
640 | ViewCell *mRoot;
|
---|
641 |
|
---|
642 | /// if merge visualization should be shown
|
---|
643 | bool mExportMergedViewCells;
|
---|
644 | /// intermediate container of merged view cells.
|
---|
645 | ViewCellContainer mMergedViewCells;
|
---|
646 | /// if merged view cells are refined.
|
---|
647 | bool mRefineViewCells;
|
---|
648 | /// weights between variance and render cost increase (must be between zero and one)
|
---|
649 | float mRenderCostWeight;
|
---|
650 |
|
---|
651 | /// overall cost used to normalize cost ratio
|
---|
652 | float mOverallCost;
|
---|
653 | float mExpectedCost;
|
---|
654 | float mDeviation;
|
---|
655 | float mAvgRenderCost;
|
---|
656 |
|
---|
657 | /// the area is used for pvs heuristics
|
---|
658 | int mUseAreaForPvs;
|
---|
659 | /// number of currently active view cells (=current cut)
|
---|
660 | int mNumActiveViewCells;
|
---|
661 | /// minimal number of view cells
|
---|
662 | int mMergeMinViewCells;
|
---|
663 | /// maximal cost ratio for the merge
|
---|
664 | float mMergeMaxCostRatio;
|
---|
665 |
|
---|
666 | typedef priority_queue<MergeCandidate> MergeQueue;
|
---|
667 |
|
---|
668 | MergeQueue mMergeQueue;
|
---|
669 |
|
---|
670 | float mMaxMemory;
|
---|
671 |
|
---|
672 | int mMaxMergesPerPass;
|
---|
673 | float mAvgCostMaxDeviation;
|
---|
674 | };
|
---|
675 |
|
---|
676 |
|
---|
677 | /**
|
---|
678 | Candidate for leaf merging based on priority.
|
---|
679 | */
|
---|
680 | class MergeCandidate
|
---|
681 | {
|
---|
682 | friend class ViewCellsTree;
|
---|
683 |
|
---|
684 | public:
|
---|
685 |
|
---|
686 | MergeCandidate(ViewCell *l, ViewCell *r);
|
---|
687 |
|
---|
688 | /** If this merge pair is still valid.
|
---|
689 | */
|
---|
690 | bool IsValid() const;
|
---|
691 |
|
---|
692 |
|
---|
693 | friend bool operator<(const MergeCandidate &leafa, const MergeCandidate &leafb)
|
---|
694 | {
|
---|
695 | return leafb.GetMergeCost() < leafa.GetMergeCost();
|
---|
696 | }
|
---|
697 |
|
---|
698 | void SetLeftViewCell(ViewCell *l);
|
---|
699 | void SetRightViewCell(ViewCell *l);
|
---|
700 |
|
---|
701 | ViewCell *GetLeftViewCell() const;
|
---|
702 | ViewCell *GetRightViewCell() const;
|
---|
703 |
|
---|
704 | /** Returns leaf view cell initially associated with this merge candidate.
|
---|
705 | */
|
---|
706 | ViewCell *GetInitialLeftViewCell() const;
|
---|
707 | /** Returns leaf view cell initially associated with this merge candidate.
|
---|
708 | */
|
---|
709 | ViewCell *GetInitialRightViewCell() const;
|
---|
710 |
|
---|
711 | /** Returns the increase of the standard deviation of this merge candidate.
|
---|
712 | */
|
---|
713 | float GetDeviationIncr() const;
|
---|
714 |
|
---|
715 | /** Merge cost of this candidate pair.
|
---|
716 | */
|
---|
717 | float GetMergeCost() const;
|
---|
718 |
|
---|
719 | /** Render cost of this candidate.
|
---|
720 | */
|
---|
721 | float GetRenderCost() const;
|
---|
722 |
|
---|
723 | static float sRenderCostWeight;
|
---|
724 |
|
---|
725 | protected:
|
---|
726 |
|
---|
727 | /// render cost increase by this merge
|
---|
728 | float mRenderCost;
|
---|
729 | /// increase / decrease of standard deviation
|
---|
730 | float mDeviationIncr;
|
---|
731 |
|
---|
732 | ViewCell *mLeftViewCell;
|
---|
733 | ViewCell *mRightViewCell;
|
---|
734 |
|
---|
735 | ViewCell *mInitialLeftViewCell;
|
---|
736 | ViewCell *mInitialRightViewCell;
|
---|
737 | };
|
---|
738 |
|
---|
739 |
|
---|
740 | class MergeStatistics: public StatisticsBase
|
---|
741 | {
|
---|
742 | public:
|
---|
743 |
|
---|
744 | int merged;
|
---|
745 | int siblings;
|
---|
746 | int candidates;
|
---|
747 | int nodes;
|
---|
748 |
|
---|
749 | int accTreeDist;
|
---|
750 | int maxTreeDist;
|
---|
751 |
|
---|
752 | Real collectTime;
|
---|
753 | Real mergeTime;
|
---|
754 |
|
---|
755 | Real overallCost;
|
---|
756 |
|
---|
757 | Real expectedRenderCost;
|
---|
758 | Real deviation;
|
---|
759 | Real heuristics;
|
---|
760 |
|
---|
761 | // Constructor
|
---|
762 | MergeStatistics()
|
---|
763 | {
|
---|
764 | Reset();
|
---|
765 | }
|
---|
766 |
|
---|
767 | double AvgTreeDist() const {return (double)accTreeDist / (double)merged;};
|
---|
768 |
|
---|
769 | void Reset()
|
---|
770 | {
|
---|
771 | nodes = 0;
|
---|
772 | merged = 0;
|
---|
773 | siblings = 0;
|
---|
774 | candidates = 0;
|
---|
775 |
|
---|
776 | accTreeDist = 0;
|
---|
777 | maxTreeDist = 0;
|
---|
778 |
|
---|
779 | collectTime = 0;
|
---|
780 | mergeTime = 0;
|
---|
781 | overallCost = 0;
|
---|
782 |
|
---|
783 | expectedRenderCost = 0;
|
---|
784 | deviation = 0;
|
---|
785 | heuristics = 0;
|
---|
786 |
|
---|
787 | }
|
---|
788 |
|
---|
789 | void Print(ostream &app) const;
|
---|
790 |
|
---|
791 | friend ostream &operator<<(ostream &s, const MergeStatistics &stat)
|
---|
792 | {
|
---|
793 | stat.Print(s);
|
---|
794 | return s;
|
---|
795 | }
|
---|
796 | };
|
---|
797 |
|
---|
798 | }
|
---|
799 |
|
---|
800 | #endif
|
---|