OpenSubdiv: opensubdiv/vtr/level.h Source File

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level.h
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1//
2// Copyright 2014 DreamWorks Animation LLC.
3//
4// Licensed under the Apache License, Version 2.0 (the "Apache License")
5// with the following modification; you may not use this file except in
6// compliance with the Apache License and the following modification to it:
7// Section 6. Trademarks. is deleted and replaced with:
8//
9// 6. Trademarks. This License does not grant permission to use the trade
10// names, trademarks, service marks, or product names of the Licensor
11// and its affiliates, except as required to comply with Section 4(c) of
12// the License and to reproduce the content of the NOTICE file.
13//
14// You may obtain a copy of the Apache License at
15//
16// http://www.apache.org/licenses/LICENSE-2.0
17//
18// Unless required by applicable law or agreed to in writing, software
19// distributed under the Apache License with the above modification is
20// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
21// KIND, either express or implied. See the Apache License for the specific
22// language governing permissions and limitations under the Apache License.
23//
24#ifndef OPENSUBDIV3_VTR_LEVEL_H
25#define OPENSUBDIV3_VTR_LEVEL_H
26
27#include "../version.h"
28
29#include "../sdc/types.h"
30#include "../sdc/crease.h"
31#include "../sdc/options.h"
32#include "../vtr/types.h"
33
34#include <algorithm>
35#include <vector>
36#include <cassert>
37#include <cstring>
38
39
40namespace OpenSubdiv {
41namespace OPENSUBDIV_VERSION {
42
43namespace Vtr {
44namespace internal {
45
46class Refinement;
47class TriRefinement;
48class QuadRefinement;
49class FVarRefinement;
50class FVarLevel;
51
52//
53// Level:
54// A refinement level includes a vectorized representation of the topology
55// for a particular subdivision level. The topology is "complete" in that any
56// level can be used as the base level of another subdivision hierarchy and can
57// be considered a complete mesh independent of its ancestors. It currently
58// does contain a "depth" member -- as some inferences can then be made about
59// the topology (i.e. all quads or all tris if not level 0).
60//
61// This class is intended for private use within the library. There are still
62// opportunities to specialize levels -- e.g. those supporting N-sided faces vs
63// those that are purely quads or tris -- so we prefer to insulate it from public
64// access.
65//
66// The representation of topology here is to store six topological relationships
67// in tables of integers. Each is stored in its own array(s) so the result is
68// a SOA representation of the topology. The six relations are:
69//
70// - face-verts: vertices incident/comprising a face
71// - face-edges: edges incident a face
72// - edge-verts: vertices incident/comprising an edge
73// - edge-faces: faces incident an edge
74// - vert-faces: faces incident a vertex
75// - vert-edges: edges incident a vertex
76//
77// There is some redundancy here but the intent is not that this be a minimal
78// representation, the intent is that it be amenable to refinement. Classes in
79// the Far layer essentially store 5 of these 6 in a permuted form -- we add
80// the face-edges here to simplify refinement.
81//
82
83class Level {
84
85public:
86 //
87 // Simple nested types to hold the tags for each component type -- some of
88 // which are user-specified features (e.g. whether a face is a hole or not)
89 // while others indicate the topological nature of the component, how it
90 // is affected by creasing in its neighborhood, etc.
91 //
92 // Most of these properties are passed down to child components during
93 // refinement, but some -- notably the designation of a component as semi-
94 // sharp -- require re-determination as sharpness values are reduced at each
95 // level.
96 //
97 struct VTag {
98 VTag() { }
99
100 // When cleared, the VTag ALMOST represents a smooth, regular, interior
101 // vertex -- the Type enum requires a bit be explicitly set for Smooth,
102 // so that must be done explicitly if desired on initialization.
103 void clear() { std::memset((void*) this, 0, sizeof(VTag)); }
104
105 typedef unsigned short VTagSize;
106
107 VTagSize _nonManifold : 1; // fixed
108 VTagSize _xordinary : 1; // fixed
109 VTagSize _boundary : 1; // fixed
110 VTagSize _corner : 1; // fixed
111 VTagSize _infSharp : 1; // fixed
112 VTagSize _semiSharp : 1; // variable
113 VTagSize _semiSharpEdges : 1; // variable
114 VTagSize _rule : 4; // variable when _semiSharp
115
116 // These next to tags are complementary -- the "incomplete" tag is only
117 // relevant for refined levels while the "incident an irregular face" tag
118 // is only relevant for the base level. They could be combined as both
119 // indicate "no full regular ring" around a vertex
120 VTagSize _incomplete : 1; // variable only set in refined levels
121 VTagSize _incidIrregFace : 1; // variable only set in base level
122
123 // Tags indicating incident infinitely-sharp (permanent) features
124 VTagSize _infSharpEdges : 1; // fixed
125 VTagSize _infSharpCrease : 1; // fixed
126 VTagSize _infIrregular : 1; // fixed
127
128 // Alternate constructor and accessor for dealing with integer bits directly:
129 explicit VTag(VTagSize bits) {
130 std::memcpy(this, &bits, sizeof(bits));
131 }
132 VTagSize getBits() const {
133 VTagSize bits;
134 std::memcpy(&bits, this, sizeof(bits));
135 return bits;
136 }
137
138 static VTag BitwiseOr(VTag const vTags[], int size = 4);
139 };
140 struct ETag {
141 ETag() { }
142
143 // When cleared, the ETag represents a smooth, manifold, interior edge
144 void clear() { std::memset((void*) this, 0, sizeof(ETag)); }
145
146 typedef unsigned char ETagSize;
147
148 ETagSize _nonManifold : 1; // fixed
149 ETagSize _boundary : 1; // fixed
150 ETagSize _infSharp : 1; // fixed
151 ETagSize _semiSharp : 1; // variable
152
153 // Alternate constructor and accessor for dealing with integer bits directly:
154 explicit ETag(ETagSize bits) {
155 std::memcpy(this, &bits, sizeof(bits));
156 }
157 ETagSize getBits() const {
158 ETagSize bits;
159 std::memcpy(&bits, this, sizeof(bits));
160 return bits;
161 }
162
163 static ETag BitwiseOr(ETag const eTags[], int size = 4);
164 };
165 struct FTag {
166 FTag() { }
167
168 void clear() { std::memset((void*) this, 0, sizeof(FTag)); }
169
170 typedef unsigned char FTagSize;
171
172 FTagSize _hole : 1; // fixed
173
174 // On deck -- coming soon...
175 //FTagSize _hasEdits : 1; // variable
176 };
177
178 // Additional simple struct to identify a "span" around a vertex, i.e. a
179 // subset of the faces around a vertex delimited by some property (e.g. a
180 // face-varying discontinuity, an inf-sharp edge, etc.)
181 //
182 // The span requires an "origin" and a "size" to fully define its extent.
183 // Use of the size is required over a leading/trailing pair as the valence
184 // around a non-manifold vertex cannot be trivially determined from two
185 // extremeties. Similarly a start face is chosen over an edge as starting
186 // with a manifold edge is ambiguous. Additional tags also support
187 // non-manifold cases, e.g. periodic spans at the apex of a double cone.
188 //
189 // Currently setting the size to 0 or leaving the span "unassigned" is an
190 // indication to use the full neighborhood rather than a subset -- prefer
191 // use of the const method here to direct inspection of the member.
192 //
193 struct VSpan {
194 VSpan() { std::memset((void*) this, 0, sizeof(VSpan)); }
195
196 void clear() { std::memset((void*) this, 0, sizeof(VSpan)); }
197 bool isAssigned() const { return _numFaces > 0; }
198
199 LocalIndex _numFaces;
200 LocalIndex _startFace;
201 LocalIndex _cornerInSpan;
202
203 unsigned short _periodic : 1;
204 unsigned short _sharp : 1;
205 };
206
207public:
208 Level();
209 ~Level();
210
211 // Simple accessors:
212 int getDepth() const { return _depth; }
213
214 int getNumVertices() const { return _vertCount; }
215 int getNumFaces() const { return _faceCount; }
216 int getNumEdges() const { return _edgeCount; }
217
218 // More global sizes may prove useful...
219 int getNumFaceVerticesTotal() const { return (int) _faceVertIndices.size(); }
220 int getNumFaceEdgesTotal() const { return (int) _faceEdgeIndices.size(); }
221 int getNumEdgeVerticesTotal() const { return (int) _edgeVertIndices.size(); }
222 int getNumEdgeFacesTotal() const { return (int) _edgeFaceIndices.size(); }
223 int getNumVertexFacesTotal() const { return (int) _vertFaceIndices.size(); }
224 int getNumVertexEdgesTotal() const { return (int) _vertEdgeIndices.size(); }
225
226 int getMaxValence() const { return _maxValence; }
227 int getMaxEdgeFaces() const { return _maxEdgeFaces; }
228
229 // Methods to access the relation tables/indices -- note that for some relations
230 // (i.e. those where a component is "contained by" a neighbor, or more generally
231 // when the neighbor is a simplex of higher dimension) we store an additional
232 // "local index", e.g. for the case of vert-faces if one of the faces F[i] is
233 // incident a vertex V, then L[i] is the "local index" in F[i] of vertex V.
234 // Once have only quads (or tris), this local index need only occupy two bits
235 // and could conceivably be packed into the same integer as the face index, but
236 // for now, given the need to support faces of potentially high valence we'll
237 // use an 8- or 16-bit integer.
238 //
239 // Methods to access the six topological relations:
240 ConstIndexArray getFaceVertices(Index faceIndex) const;
241 ConstIndexArray getFaceEdges(Index faceIndex) const;
242 ConstIndexArray getEdgeVertices(Index edgeIndex) const;
243 ConstIndexArray getEdgeFaces(Index edgeIndex) const;
244 ConstIndexArray getVertexFaces(Index vertIndex) const;
245 ConstIndexArray getVertexEdges(Index vertIndex) const;
246
247 ConstLocalIndexArray getEdgeFaceLocalIndices(Index edgeIndex) const;
248 ConstLocalIndexArray getVertexFaceLocalIndices(Index vertIndex) const;
249 ConstLocalIndexArray getVertexEdgeLocalIndices(Index vertIndex) const;
250
251 // Replace these with access to sharpness buffers/arrays rather than elements:
252 float getEdgeSharpness(Index edgeIndex) const;
253 float getVertexSharpness(Index vertIndex) const;
254 Sdc::Crease::Rule getVertexRule(Index vertIndex) const;
255
256 Index findEdge(Index v0Index, Index v1Index) const;
257
258 // Holes
259 void setFaceHole(Index faceIndex, bool b);
260 bool isFaceHole(Index faceIndex) const;
261
262 // Face-varying
263 Sdc::Options getFVarOptions(int channel) const;
264 int getNumFVarChannels() const { return (int) _fvarChannels.size(); }
265 int getNumFVarValues(int channel) const;
266 ConstIndexArray getFaceFVarValues(Index faceIndex, int channel) const;
267
268 FVarLevel & getFVarLevel(int channel) { return *_fvarChannels[channel]; }
269 FVarLevel const & getFVarLevel(int channel) const { return *_fvarChannels[channel]; }
270
271 // Manifold/non-manifold tags:
272 void setEdgeNonManifold(Index edgeIndex, bool b);
273 bool isEdgeNonManifold(Index edgeIndex) const;
274
275 void setVertexNonManifold(Index vertIndex, bool b);
276 bool isVertexNonManifold(Index vertIndex) const;
277
278 // General access to all component tags:
279 VTag const & getVertexTag(Index vertIndex) const { return _vertTags[vertIndex]; }
280 ETag const & getEdgeTag(Index edgeIndex) const { return _edgeTags[edgeIndex]; }
281 FTag const & getFaceTag(Index faceIndex) const { return _faceTags[faceIndex]; }
282
283 VTag & getVertexTag(Index vertIndex) { return _vertTags[vertIndex]; }
284 ETag & getEdgeTag(Index edgeIndex) { return _edgeTags[edgeIndex]; }
285 FTag & getFaceTag(Index faceIndex) { return _faceTags[faceIndex]; }
286
287public:
288
289 // Debugging aides:
290 enum TopologyError {
291 TOPOLOGY_MISSING_EDGE_FACES=0,
292 TOPOLOGY_MISSING_EDGE_VERTS,
293 TOPOLOGY_MISSING_FACE_EDGES,
294 TOPOLOGY_MISSING_FACE_VERTS,
295 TOPOLOGY_MISSING_VERT_FACES,
296 TOPOLOGY_MISSING_VERT_EDGES,
297
298 TOPOLOGY_FAILED_CORRELATION_EDGE_FACE,
299 TOPOLOGY_FAILED_CORRELATION_FACE_VERT,
300 TOPOLOGY_FAILED_CORRELATION_FACE_EDGE,
301
302 TOPOLOGY_FAILED_ORIENTATION_INCIDENT_EDGE,
303 TOPOLOGY_FAILED_ORIENTATION_INCIDENT_FACE,
304 TOPOLOGY_FAILED_ORIENTATION_INCIDENT_FACES_EDGES,
305
306 TOPOLOGY_DEGENERATE_EDGE,
307 TOPOLOGY_NON_MANIFOLD_EDGE,
308
309 TOPOLOGY_INVALID_CREASE_EDGE,
310 TOPOLOGY_INVALID_CREASE_VERT
311 };
312
313 static char const * getTopologyErrorString(TopologyError errCode);
314
315 typedef void (* ValidationCallback)(TopologyError errCode, char const * msg, void const * clientData);
316
317 bool validateTopology(ValidationCallback callback=0, void const * clientData=0) const;
318
319 void print(const Refinement* parentRefinement = 0) const;
320
321public:
322 // High-level topology queries -- these may be moved elsewhere:
323
324 bool isSingleCreasePatch(Index face, float* sharpnessOut=NULL, int* rotationOut=NULL) const;
325
326 //
327 // When inspecting topology, the component tags -- particularly VTag and ETag -- are most
328 // often inspected in groups for the face to which they belong. They are designed to be
329 // bitwise OR'd (the result then referred to as a "composite" tag) to make quick decisions
330 // about the face as a whole to avoid tedious topological inspection.
331 //
332 // The same logic can be applied to topology in a FVar channel when tags specific to that
333 // channel are used. Note that the VTags apply to the FVar values assigned to the corners
334 // of the face and not the vertex as a whole. The "composite" face-varying VTag for a
335 // vertex is the union of VTags of all distinct FVar values for that vertex.
336 //
337 bool doesVertexFVarTopologyMatch(Index vIndex, int fvarChannel) const;
338 bool doesFaceFVarTopologyMatch( Index fIndex, int fvarChannel) const;
339 bool doesEdgeFVarTopologyMatch( Index eIndex, int fvarChannel) const;
340
341 void getFaceVTags(Index fIndex, VTag vTags[], int fvarChannel = -1) const;
342 void getFaceETags(Index fIndex, ETag eTags[], int fvarChannel = -1) const;
343
344 VTag getFaceCompositeVTag(Index fIndex, int fvarChannel = -1) const;
345 VTag getFaceCompositeVTag(ConstIndexArray & fVerts) const;
346
347 VTag getVertexCompositeFVarVTag(Index vIndex, int fvarChannel) const;
348
349 //
350 // When gathering "patch points" we may want the indices of the vertices or the corresponding
351 // FVar values for a particular channel. Both are represented and equally accessible within
352 // the faces, so we allow all to be returned through these methods. Setting the optional FVar
353 // channel to -1 will retrieve indices of vertices instead of FVar values:
354 //
355 int gatherQuadLinearPatchPoints(Index fIndex, Index patchPoints[], int rotation = 0,
356 int fvarChannel = -1) const;
357
358 int gatherQuadRegularInteriorPatchPoints(Index fIndex, Index patchPoints[], int rotation = 0,
359 int fvarChannel = -1) const;
360 int gatherQuadRegularBoundaryPatchPoints(Index fIndex, Index patchPoints[], int boundaryEdgeInFace,
361 int fvarChannel = -1) const;
362 int gatherQuadRegularCornerPatchPoints( Index fIndex, Index patchPoints[], int cornerVertInFace,
363 int fvarChannel = -1) const;
364
365 int gatherQuadRegularRingAroundVertex(Index vIndex, Index ringPoints[],
366 int fvarChannel = -1) const;
367 int gatherQuadRegularPartialRingAroundVertex(Index vIndex, VSpan const & span, Index ringPoints[],
368 int fvarChannel = -1) const;
369
370 // WIP -- for future use, need to extend for face-varying...
371 int gatherTriRegularInteriorPatchPoints( Index fIndex, Index patchVerts[], int rotation = 0) const;
372 int gatherTriRegularBoundaryVertexPatchPoints(Index fIndex, Index patchVerts[], int boundaryVertInFace) const;
373 int gatherTriRegularBoundaryEdgePatchPoints( Index fIndex, Index patchVerts[], int boundaryEdgeInFace) const;
374 int gatherTriRegularCornerVertexPatchPoints( Index fIndex, Index patchVerts[], int cornerVertInFace) const;
375 int gatherTriRegularCornerEdgePatchPoints( Index fIndex, Index patchVerts[], int cornerEdgeInFace) const;
376
377public:
378 // Sizing methods used to construct a level to populate:
379 void resizeFaces( int numFaces);
380 void resizeFaceVertices(int numFaceVertsTotal);
381 void resizeFaceEdges( int numFaceEdgesTotal);
382
383 void resizeEdges( int numEdges);
384 void resizeEdgeVertices(); // always 2*edgeCount
385 void resizeEdgeFaces(int numEdgeFacesTotal);
386
387 void resizeVertices( int numVertices);
388 void resizeVertexFaces(int numVertexFacesTotal);
389 void resizeVertexEdges(int numVertexEdgesTotal);
390
391 void setMaxValence(int maxValence);
392
393 // Modifiers to populate the relations for each component:
394 IndexArray getFaceVertices(Index faceIndex);
395 IndexArray getFaceEdges(Index faceIndex);
396 IndexArray getEdgeVertices(Index edgeIndex);
397 IndexArray getEdgeFaces(Index edgeIndex);
398 IndexArray getVertexFaces(Index vertIndex);
399 IndexArray getVertexEdges(Index vertIndex);
400
401 LocalIndexArray getEdgeFaceLocalIndices(Index edgeIndex);
402 LocalIndexArray getVertexFaceLocalIndices(Index vertIndex);
403 LocalIndexArray getVertexEdgeLocalIndices(Index vertIndex);
404
405 // Replace these with access to sharpness buffers/arrays rather than elements:
406 float& getEdgeSharpness(Index edgeIndex);
407 float& getVertexSharpness(Index vertIndex);
408
409 // Create, destroy and populate face-varying channels:
410 int createFVarChannel(int fvarValueCount, Sdc::Options const& options);
411 void destroyFVarChannel(int channel);
412
413 IndexArray getFaceFVarValues(Index faceIndex, int channel);
414
415 void completeFVarChannelTopology(int channel, int regBoundaryValence);
416
417 // Counts and offsets for all relation types:
418 // - these may be unwarranted if we let Refinement access members directly...
419 int getNumFaceVertices( Index faceIndex) const { return _faceVertCountsAndOffsets[2*faceIndex]; }
420 int getOffsetOfFaceVertices(Index faceIndex) const { return _faceVertCountsAndOffsets[2*faceIndex + 1]; }
421
422 int getNumFaceEdges( Index faceIndex) const { return getNumFaceVertices(faceIndex); }
423 int getOffsetOfFaceEdges(Index faceIndex) const { return getOffsetOfFaceVertices(faceIndex); }
424
425 int getNumEdgeVertices( Index ) const { return 2; }
426 int getOffsetOfEdgeVertices(Index edgeIndex) const { return 2 * edgeIndex; }
427
428 int getNumEdgeFaces( Index edgeIndex) const { return _edgeFaceCountsAndOffsets[2*edgeIndex]; }
429 int getOffsetOfEdgeFaces(Index edgeIndex) const { return _edgeFaceCountsAndOffsets[2*edgeIndex + 1]; }
430
431 int getNumVertexFaces( Index vertIndex) const { return _vertFaceCountsAndOffsets[2*vertIndex]; }
432 int getOffsetOfVertexFaces(Index vertIndex) const { return _vertFaceCountsAndOffsets[2*vertIndex + 1]; }
433
434 int getNumVertexEdges( Index vertIndex) const { return _vertEdgeCountsAndOffsets[2*vertIndex]; }
435 int getOffsetOfVertexEdges(Index vertIndex) const { return _vertEdgeCountsAndOffsets[2*vertIndex + 1]; }
436
437 ConstIndexArray getFaceVertices() const;
438
439 //
440 // Note that for some relations, the size of the relations for a child component
441 // can vary radically from its parent due to the sparsity of the refinement. So
442 // in these cases a few additional utilities are provided to help define the set
443 // of incident components. Assuming adequate memory has been allocated, the
444 // "resize" methods here initialize the set of incident components by setting
445 // both the size and the appropriate offset, while "trim" is use to quickly lower
446 // the size from an upper bound and nothing else.
447 //
448 void resizeFaceVertices(Index FaceIndex, int count);
449
450 void resizeEdgeFaces(Index edgeIndex, int count);
451 void trimEdgeFaces( Index edgeIndex, int count);
452
453 void resizeVertexFaces(Index vertIndex, int count);
454 void trimVertexFaces( Index vertIndex, int count);
455
456 void resizeVertexEdges(Index vertIndex, int count);
457 void trimVertexEdges( Index vertIndex, int count);
458
459public:
460 //
461 // Initial plans were to have a few specific classes properly construct the
462 // topology from scratch, e.g. the Refinement class and a Factory class for
463 // the base level, by populating all topological relations. The need to have
464 // a class construct full topology given only a simple face-vertex list, made
465 // it necessary to write code to define and orient all relations -- and most
466 // of that seemed best placed here.
467 //
468 bool completeTopologyFromFaceVertices();
469 Index findEdge(Index v0, Index v1, ConstIndexArray v0Edges) const;
470
471 // Methods supporting the above:
472 void orientIncidentComponents();
473 bool orderVertexFacesAndEdges(Index vIndex, Index* vFaces, Index* vEdges) const;
474 bool orderVertexFacesAndEdges(Index vIndex);
475 void populateLocalIndices();
476
477 IndexArray shareFaceVertCountsAndOffsets() const;
478
479private:
480 // Refinement classes (including all subclasses) build a Level:
481 friend class Refinement;
482 friend class TriRefinement;
483 friend class QuadRefinement;
484
485 //
486 // A Level is independent of subdivision scheme or options. While it may have been
487 // affected by them in its construction, they are not associated with it -- a Level
488 // is pure topology and any subdivision parameters are external.
489 //
490
491 // Simple members for inventory, etc.
492 int _faceCount;
493 int _edgeCount;
494 int _vertCount;
495
496 // The "depth" member is clearly useful in both the topological splitting and the
497 // stencil queries, but arguably it ties the Level to a hierarchy which counters
498 // the idea of it being independent.
499 int _depth;
500
501 // Maxima to help clients manage sizing of data buffers. Given "max valence",
502 // the "max edge faces" is strictly redundant as it will always be less, but
503 // since it will typically be so much less (i.e. 2) it is kept for now.
504 int _maxEdgeFaces;
505 int _maxValence;
506
507 //
508 // Topology vectors:
509 // Note that of all of these, only data for the face-edge relation is not
510 // stored in the osd::FarTables in any form. The FarTable vectors combine
511 // the edge-vert and edge-face relations. The eventual goal is that this
512 // data be part of the osd::Far classes and be a superset of the FarTable
513 // vectors, i.e. no data duplication or conversion. The fact that FarTable
514 // already stores 5 of the 6 possible relations should make the topology
515 // storage as a whole a non-issue.
516 //
517 // The vert-face-child and vert-edge-child indices are also arguably not
518 // a topology relation but more one for parent/child relations. But it is
519 // a topological relationship, and if named differently would not likely
520 // raise this. It has been named with "child" in the name as it does play
521 // a more significant role during subdivision in mapping between parent
522 // and child components, and so has been named to reflect that more clearly.
523 //
524
525 // Per-face:
526 std::vector<Index> _faceVertCountsAndOffsets; // 2 per face, redundant after level 0
527 std::vector<Index> _faceVertIndices; // 3 or 4 per face, variable at level 0
528 std::vector<Index> _faceEdgeIndices; // matches face-vert indices
529 std::vector<FTag> _faceTags; // 1 per face: includes "hole" tag
530
531 // Per-edge:
532 std::vector<Index> _edgeVertIndices; // 2 per edge
533 std::vector<Index> _edgeFaceCountsAndOffsets; // 2 per edge
534 std::vector<Index> _edgeFaceIndices; // varies with faces per edge
535 std::vector<LocalIndex> _edgeFaceLocalIndices; // varies with faces per edge
536
537 std::vector<float> _edgeSharpness; // 1 per edge
538 std::vector<ETag> _edgeTags; // 1 per edge: manifold, boundary, etc.
539
540 // Per-vertex:
541 std::vector<Index> _vertFaceCountsAndOffsets; // 2 per vertex
542 std::vector<Index> _vertFaceIndices; // varies with valence
543 std::vector<LocalIndex> _vertFaceLocalIndices; // varies with valence, 8-bit for now
544
545 std::vector<Index> _vertEdgeCountsAndOffsets; // 2 per vertex
546 std::vector<Index> _vertEdgeIndices; // varies with valence
547 std::vector<LocalIndex> _vertEdgeLocalIndices; // varies with valence, 8-bit for now
548
549 std::vector<float> _vertSharpness; // 1 per vertex
550 std::vector<VTag> _vertTags; // 1 per vertex: manifold, Sdc::Rule, etc.
551
552 // Face-varying channels:
553 std::vector<FVarLevel*> _fvarChannels;
554};
555
556//
557// Access/modify the vertices incident a given face:
558//
559inline ConstIndexArray
560Level::getFaceVertices(Index faceIndex) const {
561 return ConstIndexArray(&_faceVertIndices[_faceVertCountsAndOffsets[faceIndex*2+1]],
562 _faceVertCountsAndOffsets[faceIndex*2]);
563}
564inline IndexArray
565Level::getFaceVertices(Index faceIndex) {
566 return IndexArray(&_faceVertIndices[_faceVertCountsAndOffsets[faceIndex*2+1]],
567 _faceVertCountsAndOffsets[faceIndex*2]);
568}
569
570inline void
571Level::resizeFaceVertices(Index faceIndex, int count) {
572
573 int* countOffsetPair = &_faceVertCountsAndOffsets[faceIndex*2];
574
575 countOffsetPair[0] = count;
576 countOffsetPair[1] = (faceIndex == 0) ? 0 : (countOffsetPair[-2] + countOffsetPair[-1]);
577
578 _maxValence = std::max(_maxValence, count);
579}
580
581inline ConstIndexArray
582Level::getFaceVertices() const {
583 return ConstIndexArray(&_faceVertIndices[0], (int)_faceVertIndices.size());
584}
585
586//
587// Access/modify the edges incident a given face:
588//
589inline ConstIndexArray
590Level::getFaceEdges(Index faceIndex) const {
591 return ConstIndexArray(&_faceEdgeIndices[_faceVertCountsAndOffsets[faceIndex*2+1]],
592 _faceVertCountsAndOffsets[faceIndex*2]);
593}
594inline IndexArray
595Level::getFaceEdges(Index faceIndex) {
596 return IndexArray(&_faceEdgeIndices[_faceVertCountsAndOffsets[faceIndex*2+1]],
597 _faceVertCountsAndOffsets[faceIndex*2]);
598}
599
600//
601// Access/modify the faces incident a given vertex:
602//
603inline ConstIndexArray
604Level::getVertexFaces(Index vertIndex) const {
605 return ConstIndexArray( (&_vertFaceIndices[0]) + _vertFaceCountsAndOffsets[vertIndex*2+1],
606 _vertFaceCountsAndOffsets[vertIndex*2]);
607}
608inline IndexArray
609Level::getVertexFaces(Index vertIndex) {
610 return IndexArray( (&_vertFaceIndices[0]) + _vertFaceCountsAndOffsets[vertIndex*2+1],
611 _vertFaceCountsAndOffsets[vertIndex*2]);
612}
613
614inline ConstLocalIndexArray
615Level::getVertexFaceLocalIndices(Index vertIndex) const {
616 return ConstLocalIndexArray( (&_vertFaceLocalIndices[0]) + _vertFaceCountsAndOffsets[vertIndex*2+1],
617 _vertFaceCountsAndOffsets[vertIndex*2]);
618}
619inline LocalIndexArray
620Level::getVertexFaceLocalIndices(Index vertIndex) {
621 return LocalIndexArray( (&_vertFaceLocalIndices[0]) + _vertFaceCountsAndOffsets[vertIndex*2+1],
622 _vertFaceCountsAndOffsets[vertIndex*2]);
623}
624
625inline void
626Level::resizeVertexFaces(Index vertIndex, int count) {
627 int* countOffsetPair = &_vertFaceCountsAndOffsets[vertIndex*2];
628
629 countOffsetPair[0] = count;
630 countOffsetPair[1] = (vertIndex == 0) ? 0 : (countOffsetPair[-2] + countOffsetPair[-1]);
631}
632inline void
633Level::trimVertexFaces(Index vertIndex, int count) {
634 _vertFaceCountsAndOffsets[vertIndex*2] = count;
635}
636
637//
638// Access/modify the edges incident a given vertex:
639//
640inline ConstIndexArray
641Level::getVertexEdges(Index vertIndex) const {
642 return ConstIndexArray( (&_vertEdgeIndices[0]) +_vertEdgeCountsAndOffsets[vertIndex*2+1],
643 _vertEdgeCountsAndOffsets[vertIndex*2]);
644}
645inline IndexArray
646Level::getVertexEdges(Index vertIndex) {
647 return IndexArray( (&_vertEdgeIndices[0]) +_vertEdgeCountsAndOffsets[vertIndex*2+1],
648 _vertEdgeCountsAndOffsets[vertIndex*2]);
649}
650
651inline ConstLocalIndexArray
652Level::getVertexEdgeLocalIndices(Index vertIndex) const {
653 return ConstLocalIndexArray( (&_vertEdgeLocalIndices[0]) + _vertEdgeCountsAndOffsets[vertIndex*2+1],
654 _vertEdgeCountsAndOffsets[vertIndex*2]);
655}
656inline LocalIndexArray
657Level::getVertexEdgeLocalIndices(Index vertIndex) {
658 return LocalIndexArray( (&_vertEdgeLocalIndices[0]) + _vertEdgeCountsAndOffsets[vertIndex*2+1],
659 _vertEdgeCountsAndOffsets[vertIndex*2]);
660}
661
662inline void
663Level::resizeVertexEdges(Index vertIndex, int count) {
664 int* countOffsetPair = &_vertEdgeCountsAndOffsets[vertIndex*2];
665
666 countOffsetPair[0] = count;
667 countOffsetPair[1] = (vertIndex == 0) ? 0 : (countOffsetPair[-2] + countOffsetPair[-1]);
668
669 _maxValence = std::max(_maxValence, count);
670}
671inline void
672Level::trimVertexEdges(Index vertIndex, int count) {
673 _vertEdgeCountsAndOffsets[vertIndex*2] = count;
674}
675
676inline void
677Level::setMaxValence(int valence) {
678 _maxValence = valence;
679}
680
681//
682// Access/modify the vertices incident a given edge:
683//
684inline ConstIndexArray
685Level::getEdgeVertices(Index edgeIndex) const {
686 return ConstIndexArray(&_edgeVertIndices[edgeIndex*2], 2);
687}
688inline IndexArray
689Level::getEdgeVertices(Index edgeIndex) {
690 return IndexArray(&_edgeVertIndices[edgeIndex*2], 2);
691}
692
693//
694// Access/modify the faces incident a given edge:
695//
696inline ConstIndexArray
697Level::getEdgeFaces(Index edgeIndex) const {
698 return ConstIndexArray(&_edgeFaceIndices[0] +
699 _edgeFaceCountsAndOffsets[edgeIndex*2+1],
700 _edgeFaceCountsAndOffsets[edgeIndex*2]);
701}
702inline IndexArray
703Level::getEdgeFaces(Index edgeIndex) {
704 return IndexArray(&_edgeFaceIndices[0] +
705 _edgeFaceCountsAndOffsets[edgeIndex*2+1],
706 _edgeFaceCountsAndOffsets[edgeIndex*2]);
707}
708
709inline ConstLocalIndexArray
710Level::getEdgeFaceLocalIndices(Index edgeIndex) const {
711 return ConstLocalIndexArray(&_edgeFaceLocalIndices[0] +
712 _edgeFaceCountsAndOffsets[edgeIndex*2+1],
713 _edgeFaceCountsAndOffsets[edgeIndex*2]);
714}
715inline LocalIndexArray
716Level::getEdgeFaceLocalIndices(Index edgeIndex) {
717 return LocalIndexArray(&_edgeFaceLocalIndices[0] +
718 _edgeFaceCountsAndOffsets[edgeIndex*2+1],
719 _edgeFaceCountsAndOffsets[edgeIndex*2]);
720}
721
722inline void
723Level::resizeEdgeFaces(Index edgeIndex, int count) {
724 int* countOffsetPair = &_edgeFaceCountsAndOffsets[edgeIndex*2];
725
726 countOffsetPair[0] = count;
727 countOffsetPair[1] = (edgeIndex == 0) ? 0 : (countOffsetPair[-2] + countOffsetPair[-1]);
728
729 _maxEdgeFaces = std::max(_maxEdgeFaces, count);
730}
731inline void
732Level::trimEdgeFaces(Index edgeIndex, int count) {
733 _edgeFaceCountsAndOffsets[edgeIndex*2] = count;
734}
735
736//
737// Access/modify sharpness values:
738//
739inline float
740Level::getEdgeSharpness(Index edgeIndex) const {
741 return _edgeSharpness[edgeIndex];
742}
743inline float&
744Level::getEdgeSharpness(Index edgeIndex) {
745 return _edgeSharpness[edgeIndex];
746}
747
748inline float
749Level::getVertexSharpness(Index vertIndex) const {
750 return _vertSharpness[vertIndex];
751}
752inline float&
753Level::getVertexSharpness(Index vertIndex) {
754 return _vertSharpness[vertIndex];
755}
756
757inline Sdc::Crease::Rule
758Level::getVertexRule(Index vertIndex) const {
759 return (Sdc::Crease::Rule) _vertTags[vertIndex]._rule;
760}
761
762//
763// Access/modify hole tag:
764//
765inline void
766Level::setFaceHole(Index faceIndex, bool b) {
767 _faceTags[faceIndex]._hole = b;
768}
769inline bool
770Level::isFaceHole(Index faceIndex) const {
771 return _faceTags[faceIndex]._hole;
772}
773
774//
775// Access/modify non-manifold tags:
776//
777inline void
778Level::setEdgeNonManifold(Index edgeIndex, bool b) {
779 _edgeTags[edgeIndex]._nonManifold = b;
780}
781inline bool
782Level::isEdgeNonManifold(Index edgeIndex) const {
783 return _edgeTags[edgeIndex]._nonManifold;
784}
785
786inline void
787Level::setVertexNonManifold(Index vertIndex, bool b) {
788 _vertTags[vertIndex]._nonManifold = b;
789}
790inline bool
791Level::isVertexNonManifold(Index vertIndex) const {
792 return _vertTags[vertIndex]._nonManifold;
793}
794
795//
796// Sizing methods to allocate space:
797//
798inline void
799Level::resizeFaces(int faceCount) {
800 _faceCount = faceCount;
801 _faceVertCountsAndOffsets.resize(2 * faceCount);
802
803 _faceTags.resize(faceCount);
804 std::memset((void*) &_faceTags[0], 0, _faceCount * sizeof(FTag));
805}
806inline void
807Level::resizeFaceVertices(int totalFaceVertCount) {
808 _faceVertIndices.resize(totalFaceVertCount);
809}
810inline void
811Level::resizeFaceEdges(int totalFaceEdgeCount) {
812 _faceEdgeIndices.resize(totalFaceEdgeCount);
813}
814
815inline void
816Level::resizeEdges(int edgeCount) {
817
818 _edgeCount = edgeCount;
819 _edgeFaceCountsAndOffsets.resize(2 * edgeCount);
820
821 _edgeSharpness.resize(edgeCount);
822 _edgeTags.resize(edgeCount);
823
824 if (edgeCount>0) {
825 std::memset((void*) &_edgeTags[0], 0, _edgeCount * sizeof(ETag));
826 }
827}
828inline void
829Level::resizeEdgeVertices() {
830
831 _edgeVertIndices.resize(2 * _edgeCount);
832}
833inline void
834Level::resizeEdgeFaces(int totalEdgeFaceCount) {
835
836 _edgeFaceIndices.resize(totalEdgeFaceCount);
837 _edgeFaceLocalIndices.resize(totalEdgeFaceCount);
838}
839
840inline void
841Level::resizeVertices(int vertCount) {
842
843 _vertCount = vertCount;
844 _vertFaceCountsAndOffsets.resize(2 * vertCount);
845 _vertEdgeCountsAndOffsets.resize(2 * vertCount);
846
847 _vertSharpness.resize(vertCount);
848 _vertTags.resize(vertCount);
849 std::memset((void*) &_vertTags[0], 0, _vertCount * sizeof(VTag));
850}
851inline void
852Level::resizeVertexFaces(int totalVertFaceCount) {
853
854 _vertFaceIndices.resize(totalVertFaceCount);
855 _vertFaceLocalIndices.resize(totalVertFaceCount);
856}
857inline void
858Level::resizeVertexEdges(int totalVertEdgeCount) {
859
860 _vertEdgeIndices.resize(totalVertEdgeCount);
861 _vertEdgeLocalIndices.resize(totalVertEdgeCount);
862}
863
864inline IndexArray
865Level::shareFaceVertCountsAndOffsets() const {
866 // XXXX manuelk we have to force const casting here (classes don't 'share'
867 // members usually...)
868 return IndexArray(const_cast<Index *>(&_faceVertCountsAndOffsets[0]),
869 (int)_faceVertCountsAndOffsets.size());
870}
871
872} // end namespace internal
873} // end namespace Vtr
874
875} // end namespace OPENSUBDIV_VERSION
876using namespace OPENSUBDIV_VERSION;
877} // end namespace OpenSubdiv
878
879#endif /* OPENSUBDIV3_VTR_LEVEL_H */
OpenSubdiv
Definition: limits.h:32
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::ConstLocalIndexArray
ConstArray< LocalIndex > ConstLocalIndexArray
Definition: types.h:83
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::LocalIndexArray
Array< LocalIndex > LocalIndexArray
Definition: types.h:82
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::Index
int Index
Definition: types.h:54
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::ConstIndexArray
ConstArray< Index > ConstIndexArray
Definition: types.h:80
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::LocalIndex
unsigned short LocalIndex
Definition: types.h:66
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::IndexArray
Array< Index > IndexArray
Definition: types.h:79
OpenSubdiv::OPENSUBDIV_VERSION::Sdc::Crease::Rule
Rule
Definition: crease.h:82