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 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_FVAR_REFINEMENT_H
25 #define OPENSUBDIV3_VTR_FVAR_REFINEMENT_H
26
27 #include "../version.h"
28
29 #include "../sdc/types.h"
30 #include "../sdc/crease.h"
31 #include "../vtr/types.h"
32 #include "../vtr/refinement.h"
33 #include "../vtr/fvarLevel.h"
34
35 #include <vector>
36 #include <cassert>
37 #include <cstring>
38
39
40 namespace OpenSubdiv {
41 namespace OPENSUBDIV_VERSION {
42
43 namespace Vtr {
44 namespace internal {
45
46 //
47 // FVarRefinement:
48 // A face-varying refinement contains data to support the refinement of a
49 // particular face-varying "channel". Just as Refinement maintains a mapping
50 // between the components of a parent Level and its child, the face-varying
51 // analog maintains a mapping between the face-varying values of a parent
52 // FVarLevel and its child.
53 //
54 // It turns out there is little data necessary here, so the class consists
55 // mainly of methods that populate the child FVarLevel. The mapping data in
56 // the refinement between Levels serves most purposes and all that is required
57 // in addition is a mapping from values in the child FVarLevel to the parent.
58 //
59 class FVarRefinement {
60 public:
61 FVarRefinement(Refinement const& refinement, FVarLevel& parent, FVarLevel& child);
62 ~FVarRefinement();
63
64 int getChildValueParentSource(Index vIndex, int sibling) const {
65 return _childValueParentSource[_childFVar.getVertexValueOffset(vIndex, (LocalIndex)sibling)];
66 }
67
68 float getFractionalWeight(Index pVert, LocalIndex pSibling,
69 Index cVert, LocalIndex cSibling) const;
70
71
72 // Modifiers supporting application of the refinement:
73 void applyRefinement();
74
75 void estimateAndAllocateChildValues();
76 void populateChildValues();
77 void populateChildValuesFromFaceVertices();
78 void populateChildValuesFromEdgeVertices();
79 int populateChildValuesForEdgeVertex(Index cVert, Index pEdge);
80 void populateChildValuesFromVertexVertices();
81 int populateChildValuesForVertexVertex(Index cVert, Index pVert);
82 void trimAndFinalizeChildValues();
83
84 void propagateEdgeTags();
85 void propagateValueTags();
86 void propagateValueCreases();
87 void reclassifySemisharpValues();
88
89 private:
90 //
91 // Identify the Refinement, its Levels and assigned FVarLevels for more
92 // immediate access -- child FVarLevel is non-const as it is to be assigned:
93 //
94 Refinement const & _refinement;
95
96 Level const & _parentLevel;
97 FVarLevel const & _parentFVar;
98
99 Level const & _childLevel;
100 FVarLevel & _childFVar;
101
102 // When refinement is sparse, we need a mapping between siblings of a vertex
103 // value in the parent and child -- and for some child values, there will not
104 // be a parent value, in which case the source of the parent component will
105 // be stored. So we refer to the parent "source" rather than "sibling":
106 //
107 std::vector<LocalIndex> _childValueParentSource;
108 };
109
110 } // end namespace internal
111 } // end namespace Vtr
112
113 } // end namespace OPENSUBDIV_VERSION
114 using namespace OPENSUBDIV_VERSION;
115 } // end namespace OpenSubdiv
116
117 #endif /* OPENSUBDIV3_VTR_FVAR_REFINEMENT_H */
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarLevel::getVertexValueOffset
Index getVertexValueOffset(Index v, Sibling i=0) const
Definition: fvarLevel.h:184
OpenSubdiv
Definition: error.h:30
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarLevel
Definition: fvarLevel.h:78
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::populateChildValues
void populateChildValues()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::FVarRefinement
FVarRefinement(Refinement const &refinement, FVarLevel &parent, FVarLevel &child)
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::populateChildValuesFromEdgeVertices
void populateChildValuesFromEdgeVertices()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::reclassifySemisharpValues
void reclassifySemisharpValues()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::populateChildValuesForEdgeVertex
int populateChildValuesForEdgeVertex(Index cVert, Index pEdge)
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::estimateAndAllocateChildValues
void estimateAndAllocateChildValues()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::populateChildValuesFromVertexVertices
void populateChildValuesFromVertexVertices()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::Level
Definition: level.h:83
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::LocalIndex
unsigned short LocalIndex
Definition: types.h:66
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::populateChildValuesForVertexVertex
int populateChildValuesForVertexVertex(Index cVert, Index pVert)
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::trimAndFinalizeChildValues
void trimAndFinalizeChildValues()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::propagateValueTags
void propagateValueTags()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::~FVarRefinement
~FVarRefinement()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::getFractionalWeight
float getFractionalWeight(Index pVert, LocalIndex pSibling, Index cVert, LocalIndex cSibling) const
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::populateChildValuesFromFaceVertices
void populateChildValuesFromFaceVertices()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::Index
int Index
Definition: types.h:54
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::getChildValueParentSource
int getChildValueParentSource(Index vIndex, int sibling) const
Definition: fvarRefinement.h:64
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::propagateValueCreases
void propagateValueCreases()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::propagateEdgeTags
void propagateEdgeTags()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::Refinement
Definition: refinement.h:69
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement::applyRefinement
void applyRefinement()
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::internal::FVarRefinement
Definition: fvarRefinement.h:59