OpenSubdiv: opensubdiv/vtr/fvarRefinement.h Source File

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fvarRefinement.h
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1//
2// Copyright 2014 DreamWorks Animation LLC.
3//
4// Licensed under the terms set forth in the LICENSE.txt file available at
5// https://opensubdiv.org/license.
6//
7#ifndef OPENSUBDIV3_VTR_FVAR_REFINEMENT_H
8#define OPENSUBDIV3_VTR_FVAR_REFINEMENT_H
9
10#include "../version.h"
11
12#include "../sdc/types.h"
13#include "../sdc/crease.h"
14#include "../vtr/types.h"
15#include "../vtr/refinement.h"
16#include "../vtr/fvarLevel.h"
17
18#include <vector>
19#include <cassert>
20#include <cstring>
21
22
23namespace OpenSubdiv {
24namespace OPENSUBDIV_VERSION {
25
26namespace Vtr {
27namespace internal {
28
29//
30// FVarRefinement:
31// A face-varying refinement contains data to support the refinement of a
32// particular face-varying "channel". Just as Refinement maintains a mapping
33// between the components of a parent Level and its child, the face-varying
34// analog maintains a mapping between the face-varying values of a parent
35// FVarLevel and its child.
36//
37// It turns out there is little data necessary here, so the class consists
38// mainly of methods that populate the child FVarLevel. The mapping data in
39// the refinement between Levels serves most purposes and all that is required
40// in addition is a mapping from values in the child FVarLevel to the parent.
41//
42class FVarRefinement {
43public:
44 FVarRefinement(Refinement const& refinement, FVarLevel& parent, FVarLevel& child);
45 ~FVarRefinement();
46
47 int getChildValueParentSource(Index vIndex, int sibling) const {
48 return _childValueParentSource[_childFVar.getVertexValueOffset(vIndex, (LocalIndex)sibling)];
49 }
50
51 float getFractionalWeight(Index pVert, LocalIndex pSibling,
52 Index cVert, LocalIndex cSibling) const;
53
54
55 // Modifiers supporting application of the refinement:
56 void applyRefinement();
57
58 void estimateAndAllocateChildValues();
59 void populateChildValues();
60 void populateChildValuesFromFaceVertices();
61 void populateChildValuesFromEdgeVertices();
62 int populateChildValuesForEdgeVertex(Index cVert, Index pEdge);
63 void populateChildValuesFromVertexVertices();
64 int populateChildValuesForVertexVertex(Index cVert, Index pVert);
65 void trimAndFinalizeChildValues();
66
67 void propagateEdgeTags();
68 void propagateValueTags();
69 void propagateValueCreases();
70 void reclassifySemisharpValues();
71
72private:
73 //
74 // Identify the Refinement, its Levels and assigned FVarLevels for more
75 // immediate access -- child FVarLevel is non-const as it is to be assigned:
76 //
77 Refinement const & _refinement;
78
79 Level const & _parentLevel;
80 FVarLevel const & _parentFVar;
81
82 Level const & _childLevel;
83 FVarLevel & _childFVar;
84
85 // When refinement is sparse, we need a mapping between siblings of a vertex
86 // value in the parent and child -- and for some child values, there will not
87 // be a parent value, in which case the source of the parent component will
88 // be stored. So we refer to the parent "source" rather than "sibling":
89 //
90 std::vector<LocalIndex> _childValueParentSource;
91};
92
93} // end namespace internal
94} // end namespace Vtr
95
96} // end namespace OPENSUBDIV_VERSION
97using namespace OPENSUBDIV_VERSION;
98} // end namespace OpenSubdiv
99
100#endif /* OPENSUBDIV3_VTR_FVAR_REFINEMENT_H */
crease.h
fvarLevel.h
refinement.h
OpenSubdiv
Definition limits.h:15
OpenSubdiv::OPENSUBDIV_VERSION
Definition limits.h:16
OpenSubdiv::OPENSUBDIV_VERSION::Vtr
Definition topologyRefiner.h:23
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::Index
int Index
Definition types.h:37
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::LocalIndex
unsigned short LocalIndex
Definition types.h:49
types.h
types.h