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surfaceFactory.h
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1//
2// Copyright 2021 Pixar
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
25#ifndef OPENSUBDIV3_BFR_SURFACE_FACTORY_H
26#define OPENSUBDIV3_BFR_SURFACE_FACTORY_H
27
28#include "../version.h"
29
30#include "../bfr/surface.h"
31#include "../bfr/surfaceFactoryMeshAdapter.h"
32#include "../sdc/options.h"
33#include "../sdc/types.h"
34
35#include <cstdint>
36
37 namespace OpenSubdiv {
38 namespace OPENSUBDIV_VERSION {
39
40 namespace Bfr {
41
42//
43// Forward declarations of public and internal classes used by factories:
44//
45 class SurfaceFactoryCache;
46 class FaceTopology;
47 class FaceSurface;
48
103 class SurfaceFactory : public SurfaceFactoryMeshAdapter {
104 public:
116 class Options {
117 public:
118 Options() : _dfltFVarID(-1), _externCache(0), _enableCache(true),
119 _approxLevelSmooth(2), _approxLevelSharp(6) { }
120
123 Options & SetDefaultFVarID(FVarID id);
125 FVarID GetDefaultFVarID() const { return _dfltFVarID; }
126
128 Options & EnableCaching(bool on);
130 bool IsCachingEnabled() const { return _enableCache; }
131
133 Options & SetExternalCache(SurfaceFactoryCache * c);
135 SurfaceFactoryCache * GetExternalCache() const { return _externCache; }
136
137 // Set refinement levels used to approximate the limit surface
138 // for smooth and sharp features (reasonable defaults assigned):
140 Options & SetApproxLevelSmooth(int level);
142 int GetApproxLevelSmooth() const { return _approxLevelSmooth; }
143
145 Options & SetApproxLevelSharp(int level);
147 int GetApproxLevelSharp() const { return _approxLevelSharp; }
148
149 private:
150 // Member variables:
151 FVarID _dfltFVarID;
152
153 SurfaceFactoryCache * _externCache;
154
155 unsigned char _enableCache : 1;
156 unsigned char _approxLevelSmooth;
157 unsigned char _approxLevelSharp;
158 };
159
160 public:
161 ~SurfaceFactory() override;
162
164
168
170 Sdc::SchemeType GetSchemeType() const { return _subdivScheme; }
171
173 Sdc::Options GetSchemeOptions() const { return _subdivOptions; }
175
176 public:
178
190
200 bool FaceHasLimitSurface(Index faceIndex) const;
201
208 Parameterization GetFaceParameterization(Index faceIndex) const;
210
211 public:
213
233
241 template <typename REAL>
242 bool InitVertexSurface(Index faceIndex, Surface<REAL> * surface) const;
243
251 template <typename REAL>
252 bool InitVaryingSurface(Index faceIndex, Surface<REAL> * surface) const;
253
266 template <typename REAL>
267 bool InitFaceVaryingSurface(Index faceIndex, Surface<REAL> * surface) const;
268
278 template <typename REAL>
279 bool InitFaceVaryingSurface(Index faceIndex, Surface<REAL> * surface,
280 FVarID fvarID) const;
281
307 template <typename REAL>
308 bool InitSurfaces(Index faceIndex, Surface<REAL> * vtxSurface,
309 Surface<REAL> * fvarSurfaces,
310 FVarID const fvarIDs[] = 0,
311 int fvarCount = 0,
312 Surface<REAL> * varSurface = 0) const;
314
316
319 //
320 // WIP - considering removing these since non-essential
321 //
322
324 template <typename REAL=float>
325 Surface<REAL> * CreateVertexSurface(Index faceIndex) const;
326
328 template <typename REAL=float>
329 Surface<REAL> * CreateVaryingSurface(Index faceIndex) const;
330
332 template <typename REAL=float>
333 Surface<REAL> * CreateFaceVaryingSurface(Index faceIndex) const;
334
336 template <typename REAL=float>
337 Surface<REAL> * CreateFaceVaryingSurface(Index faceIndex, FVarID id) const;
339
340 protected:
342
346
358 SurfaceFactory(Sdc::SchemeType schemeType,
359 Sdc::Options const & schemeOptions,
360 Options const & limitOptions);
361
363 void setInternalCache(SurfaceFactoryCache * cache);
364
365 SurfaceFactory(SurfaceFactory const &) = delete;
366 SurfaceFactory & operator=(SurfaceFactory const &) = delete;
368
369 private:
370 // Supporting internal methods:
371 void setSubdivisionOptions(Sdc::SchemeType, Sdc::Options const & options);
372 void setFactoryOptions(Options const & factoryOptions);
373
374 bool faceHasLimitSimple(Index faceIndex, int faceSize) const;
375
376 bool faceHasLimitNeighborhood(Index faceIndex) const;
377 bool faceHasLimitNeighborhood(FaceTopology const & faceTopology) const;
378
379 class SurfaceSet;
380
381 bool populateAllSurfaces( Index faceIndex, SurfaceSet * sSetPtr) const;
382 bool populateLinearSurfaces( Index faceIndex, SurfaceSet * sSetPtr) const;
383 bool populateNonLinearSurfaces(Index faceIndex, SurfaceSet * sSetPtr) const;
384
385 bool initSurfaces(Index faceIndex, internal::SurfaceData * vtxSurface,
386 internal::SurfaceData * varSurface,
387 internal::SurfaceData * fvarSurfaces,
388 int fvarCount,
389 FVarID const fvarIDs[]) const;
390
391 // Methods to assemble topology and corresponding indices for entire face:
392 bool isFaceNeighborhoodRegular(Index faceIndex,
393 FVarID const * fvarPtrOrVtx,
394 Index indices[]) const;
395
396 bool initFaceNeighborhoodTopology(Index faceIndex,
397 FaceTopology * topology) const;
398
399 bool gatherFaceNeighborhoodTopology(Index faceIndex,
400 FaceTopology * topology) const;
401
402 int gatherFaceNeighborhoodIndices(Index faceIndex,
403 FaceTopology const & topology,
404 FVarID const * fvarPtrOrVtx,
405 Index indices[]) const;
406
407 // Methods to assemble Surfaces for the different categories of patch:
408 typedef internal::SurfaceData SurfaceType;
409
410 void assignLinearSurface(SurfaceType * surfacePtr,
411 Index faceIndex,
412 FVarID const * fvarPtrOrVtx) const;
413
414 void assignRegularSurface(SurfaceType * surfacePtr,
415 Index const surfacePatchPoints[]) const;
416
417 void assignRegularSurface(SurfaceType * surfacePtr,
418 FaceSurface const & surfaceDescription) const;
419
420 void assignIrregularSurface(SurfaceType * surfacePtr,
421 FaceSurface const & surfaceDescription) const;
422
423 void copyNonLinearSurface(SurfaceType * surfacePtr,
424 SurfaceType const & surfaceSource,
425 FaceSurface const & surfaceDescription) const;
426
427 private:
428 // Members describing options and subdivision properties (very little
429 // memory and low initialization cost)
430 Sdc::SchemeType _subdivScheme;
431 Sdc::Options _subdivOptions;
432 Options _factoryOptions;
433
434 // Members related to subdivision topology, options and limit tests:
435 unsigned int _linearScheme : 1;
436 unsigned int _linearFVarInterp : 1;
437
438 unsigned int _testNeighborhoodForLimit : 1;
439 unsigned int _rejectSmoothBoundariesForLimit : 1;
440 unsigned int _rejectIrregularFacesForLimit : 1;
441
442 int _regFaceSize;
443
444 // Members related to caching:
445 SurfaceFactoryCache mutable * _topologyCache;
446};
447
448//
449// Inline methods for Options:
450//
451 inline SurfaceFactory::Options &
452 SurfaceFactory::Options::SetDefaultFVarID(FVarID id) {
453 _dfltFVarID = id;
454 return *this;
455}
456 inline SurfaceFactory::Options &
457 SurfaceFactory::Options::EnableCaching(bool on) {
458 _enableCache = on;
459 return *this;
460}
461 inline SurfaceFactory::Options &
462 SurfaceFactory::Options::SetExternalCache(SurfaceFactoryCache * c) {
463 _externCache = c;
464 return *this;
465}
466 inline SurfaceFactory::Options &
467 SurfaceFactory::Options::SetApproxLevelSmooth(int level) {
468 _approxLevelSmooth = (unsigned char) level;
469 return *this;
470}
471 inline SurfaceFactory::Options &
472 SurfaceFactory::Options::SetApproxLevelSharp(int level) {
473 _approxLevelSharp = (unsigned char) level;
474 return *this;
475}
476
477//
478// Inline methods to initializes Surfaces:
479//
480 template <typename REAL>
481 inline bool
482 SurfaceFactory::InitVertexSurface(Index face, Surface<REAL> * s) const {
483
484 return initSurfaces(face, &s->getSurfaceData(), 0, 0, 0, 0);
485}
486 template <typename REAL>
487 inline bool
488 SurfaceFactory::InitVaryingSurface(Index face, Surface<REAL> * s) const {
489
490 return initSurfaces(face, 0, &s->getSurfaceData(), 0, 0, 0);
491}
492 template <typename REAL>
493 inline bool
494 SurfaceFactory::InitFaceVaryingSurface(Index face, Surface<REAL> * s,
495 FVarID fvarID) const {
496 return initSurfaces(face, 0, 0, &s->getSurfaceData(), 1, &fvarID);
497}
498 template <typename REAL>
499 inline bool
500 SurfaceFactory::InitFaceVaryingSurface(Index face, Surface<REAL> * s) const {
501 FVarID dfltID = _factoryOptions.GetDefaultFVarID();
502 return initSurfaces(face, 0, 0, &s->getSurfaceData(), 1, &dfltID);
503}
504
505 template <typename REAL>
506 inline bool
507 SurfaceFactory::InitSurfaces(Index faceIndex, Surface<REAL> * vtxSurface,
508 Surface<REAL> * fvarSurfaces, FVarID const fvarIDs[], int fvarCount,
509 Surface<REAL> * varSurface) const {
510
511 bool useDfltFVarID = fvarSurfaces && (fvarIDs == 0) && (fvarCount == 0);
512 FVarID dfltFVarID = useDfltFVarID ? _factoryOptions.GetDefaultFVarID() : 0;
513
514 return initSurfaces(faceIndex,
515 vtxSurface ? &vtxSurface->getSurfaceData() : 0,
516 varSurface ? &varSurface->getSurfaceData() : 0,
517 fvarSurfaces ? &fvarSurfaces->getSurfaceData() : 0,
518 fvarCount ? fvarCount : (fvarSurfaces != 0),
519 useDfltFVarID ? &dfltFVarID : fvarIDs);
520}
521
522//
523// Inline methods to allocate and initialize Surfaces:
524//
525 template <typename REAL>
526 inline Surface<REAL> *
527 SurfaceFactory::CreateVertexSurface(Index faceIndex) const {
528 Surface<REAL> * s = new Surface<REAL>();
529 if (InitVertexSurface<REAL>(faceIndex, s)) return s;
530 delete s;
531 return 0;
532}
533 template <typename REAL>
534 inline Surface<REAL> *
535 SurfaceFactory::CreateVaryingSurface(Index faceIndex) const {
536 Surface<REAL> * s = new Surface<REAL>();
537 if (InitVaryingSurface<REAL>(faceIndex, s)) return s;
538 delete s;
539 return 0;
540}
541 template <typename REAL>
542 inline Surface<REAL> *
543 SurfaceFactory::CreateFaceVaryingSurface(Index faceIndex, FVarID fvarID) const {
544 Surface<REAL> * s = new Surface<REAL>();
545 if (InitFaceVaryingSurface<REAL>(faceIndex, s, fvarID)) return s;
546 delete s;
547 return 0;
548}
549 template <typename REAL>
550 inline Surface<REAL> *
551 SurfaceFactory::CreateFaceVaryingSurface(Index face) const {
552 FVarID dfltID = _factoryOptions.GetDefaultFVarID();
553 return CreateFaceVaryingSurface<REAL>(face, dfltID);
554}
555
556} // end namespace Bfr
557
558} // end namespace OPENSUBDIV_VERSION
559 using namespace OPENSUBDIV_VERSION;
560
561} // end namespace OpenSubdiv
562
563#endif /* OPENSUBDIV3_BFR_SURFACE_FACTORY_H */
OpenSubdiv
Definition limits.h:32
OpenSubdiv::OPENSUBDIV_VERSION::Sdc::SchemeType
SchemeType
Enumerated type for all subdivision schemes supported by OpenSubdiv.
Definition types.h:37
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::Parameterization
Simple class defining the 2D parameterization of a face.
Definition parameterization.h:52
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::Surface
Encapsulates the limit surface for a face of a mesh.
Definition surface.h:59
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory
Base class providing initialization of a Surface for each face of a mesh.
Definition surfaceFactory.h:103
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::setInternalCache
void setInternalCache(SurfaceFactoryCache *cache)
Subclass to identify an internal cache for use by base class.
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::~SurfaceFactory
~SurfaceFactory() override
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::InitFaceVaryingSurface
bool InitFaceVaryingSurface(Index faceIndex, Surface< REAL > *surface) const
Initialize a Surface for the default face-varying data.
Definition surfaceFactory.h:500
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::GetSchemeOptions
Sdc::Options GetSchemeOptions() const
Return the set of subdivision options.
Definition surfaceFactory.h:173
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::GetFaceParameterization
Parameterization GetFaceParameterization(Index faceIndex) const
Return the Parameterization of a face with a limit surface.
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::SurfaceFactory
SurfaceFactory(SurfaceFactory const &)=delete
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::FaceHasLimitSurface
bool FaceHasLimitSurface(Index faceIndex) const
Return if a specified face has a limit surface.
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::operator=
SurfaceFactory & operator=(SurfaceFactory const &)=delete
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::CreateVertexSurface
Surface< REAL > * CreateVertexSurface(Index faceIndex) const
Construct a Surface for vertex data.
Definition surfaceFactory.h:527
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::CreateFaceVaryingSurface
Surface< REAL > * CreateFaceVaryingSurface(Index faceIndex) const
Construct a Surface for the default face-varying data.
Definition surfaceFactory.h:551
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::InitSurfaces
bool InitSurfaces(Index faceIndex, Surface< REAL > *vtxSurface, Surface< REAL > *fvarSurfaces, FVarID const fvarIDs[]=0, int fvarCount=0, Surface< REAL > *varSurface=0) const
Initialize multiple Surfaces at once.
Definition surfaceFactory.h:507
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::GetSchemeType
Sdc::SchemeType GetSchemeType() const
Return the subdivision scheme.
Definition surfaceFactory.h:170
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::CreateVaryingSurface
Surface< REAL > * CreateVaryingSurface(Index faceIndex) const
Construct a Surface for varying data.
Definition surfaceFactory.h:535
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::InitVertexSurface
bool InitVertexSurface(Index faceIndex, Surface< REAL > *surface) const
Initialize a Surface for vertex data.
Definition surfaceFactory.h:482
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::InitVaryingSurface
bool InitVaryingSurface(Index faceIndex, Surface< REAL > *surface) const
Initialize a Surface for varying data.
Definition surfaceFactory.h:488
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::SurfaceFactory
SurfaceFactory(Sdc::SchemeType schemeType, Sdc::Options const &schemeOptions, Options const &limitOptions)
Constructor to be used by subclasses.
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options
Simple set of options assigned to instances of SurfaceFactory.
Definition surfaceFactory.h:116
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::SetExternalCache
Options & SetExternalCache(SurfaceFactoryCache *c)
Assign an external cache to override the internal.
Definition surfaceFactory.h:462
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::EnableCaching
Options & EnableCaching(bool on)
Enable or disable caching (default is true):
Definition surfaceFactory.h:457
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::SetApproxLevelSmooth
Options & SetApproxLevelSmooth(int level)
Assign maximum refinement level for smooth features.
Definition surfaceFactory.h:467
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::GetApproxLevelSmooth
int GetApproxLevelSmooth() const
Return maximum refinement level for smooth features.
Definition surfaceFactory.h:142
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::Options
Options()
Definition surfaceFactory.h:118
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::IsCachingEnabled
bool IsCachingEnabled() const
Return if caching is enable.
Definition surfaceFactory.h:130
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::SetDefaultFVarID
Options & SetDefaultFVarID(FVarID id)
Assign the default face-varying ID (none assigned by default)
Definition surfaceFactory.h:452
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::SetApproxLevelSharp
Options & SetApproxLevelSharp(int level)
Assign maximum refinement level for sharp features.
Definition surfaceFactory.h:472
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::GetDefaultFVarID
FVarID GetDefaultFVarID() const
Return the default face-varying ID.
Definition surfaceFactory.h:125
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::GetApproxLevelSharp
int GetApproxLevelSharp() const
Return maximum refinement level for sharp features.
Definition surfaceFactory.h:147
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactory::Options::GetExternalCache
SurfaceFactoryCache * GetExternalCache() const
Return any assigned external cache.
Definition surfaceFactory.h:135
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactoryCache
Container used internally by SurfaceFactory to store reusable information.
Definition surfaceFactoryCache.h:59
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactoryMeshAdapter
Abstract interface adapting SurfaceFactory to a connected mesh representation.
Definition surfaceFactoryMeshAdapter.h:65
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactoryMeshAdapter::Index
int Index
Integer type representing a mesh index.
Definition surfaceFactoryMeshAdapter.h:68
OpenSubdiv::OPENSUBDIV_VERSION::Bfr::SurfaceFactoryMeshAdapter::FVarID
std::intptr_t FVarID
Type used to identify and specify face-varying primvars.
Definition surfaceFactoryMeshAdapter.h:80
OpenSubdiv::OPENSUBDIV_VERSION::Sdc::Options
All supported options applying to subdivision scheme.
Definition options.h:51