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patchDescriptor.h
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1//
2// Copyright 2013 Pixar
3//
4// Licensed under the terms set forth in the LICENSE.txt file available at
5// https://opensubdiv.org/license.
6//
7
8#ifndef OPENSUBDIV3_FAR_PATCH_DESCRIPTOR_H
9#define OPENSUBDIV3_FAR_PATCH_DESCRIPTOR_H
10
11#include "../version.h"
12
13#include "../far/types.h"
14#include "../sdc/types.h"
15
16#include <vector>
17
18 namespace OpenSubdiv {
19 namespace OPENSUBDIV_VERSION {
20
21 namespace Far {
22
27 class PatchDescriptor {
28
29 public:
30
31 enum Type {
32 NON_PATCH = 0,
33
34 POINTS,
35 LINES,
36
37 QUADS,
38 TRIANGLES,
39
40 LOOP,
41
42 REGULAR,
43 GREGORY,
44 GREGORY_BOUNDARY,
45 GREGORY_BASIS,
46 GREGORY_TRIANGLE
47 };
48
49 public:
50
52 PatchDescriptor() :
53 _type(NON_PATCH) { }
54
56 PatchDescriptor(int type) :
57 _type(type) { }
58
60 PatchDescriptor( PatchDescriptor const & d ) :
61 _type(d.GetType()) { }
62
64 PatchDescriptor & operator=( PatchDescriptor const & d ) {
65 _type = d.GetType();
66 return *this;
67 }
68
70 Type GetType() const {
71 return (Type)_type;
72 }
73
75 static inline bool IsAdaptive(Type type) {
76 return type > TRIANGLES;
77 }
78
80 bool IsAdaptive() const {
81 return IsAdaptive( this->GetType() );
82 }
83
86 static inline short GetNumControlVertices( Type t );
87
89 static inline short GetNumFVarControlVertices( Type t );
90
93 short GetNumControlVertices() const {
94 return GetNumControlVertices( this->GetType() );
95 }
96
98 short GetNumFVarControlVertices() const {
99 return GetNumFVarControlVertices( this->GetType() );
100 }
101
103 static short GetRegularPatchSize() { return 16; }
104
106 static short GetGregoryPatchSize() { return 4; }
107
109 static short GetGregoryBasisPatchSize() { return 20; }
110
111
114 static Vtr::ConstArray<PatchDescriptor> GetAdaptivePatchDescriptors(Sdc::SchemeType type);
115
117 inline bool operator < ( PatchDescriptor const other ) const;
118
120 inline bool operator == ( PatchDescriptor const other ) const;
121
122 // debug helper
123 void print() const;
124
125 private:
126 unsigned int _type;
127};
128
129 typedef Vtr::ConstArray<PatchDescriptor> ConstPatchDescriptorArray;
130
131// Returns the number of control vertices expected for a patch of this type
132 inline short
133 PatchDescriptor::GetNumControlVertices( Type type ) {
134 switch (type) {
135 case REGULAR : return GetRegularPatchSize();
136 case LOOP : return 12;
137 case QUADS : return 4;
138 case GREGORY :
139 case GREGORY_BOUNDARY : return GetGregoryPatchSize();
140 case GREGORY_BASIS : return GetGregoryBasisPatchSize();
141 case GREGORY_TRIANGLE : return 18;
142 case TRIANGLES : return 3;
143 case LINES : return 2;
144 case POINTS : return 1;
145 default : return -1;
146 }
147}
148
149// Returns the number of face-varying control vertices expected for a patch of this type
150 inline short
151 PatchDescriptor::GetNumFVarControlVertices( Type type ) {
152 return PatchDescriptor::GetNumControlVertices(type);
153}
154
155// Allows ordering of patches by type
156 inline bool
157 PatchDescriptor::operator < ( PatchDescriptor const other ) const {
158 return (_type < other._type);
159}
160
161// True if the descriptors are identical
162 inline bool
163 PatchDescriptor::operator == ( PatchDescriptor const other ) const {
164 return _type == other._type;
165}
166
167
168
169} // end namespace Far
170
171} // end namespace OPENSUBDIV_VERSION
172 using namespace OPENSUBDIV_VERSION;
173
174} // end namespace OpenSubdiv
175
176#endif /* OPENSUBDIV3_FAR_PATCH_DESCRIPTOR_H */
OpenSubdiv
Definition limits.h:15
OpenSubdiv::OPENSUBDIV_VERSION
Definition limits.h:16
OpenSubdiv::OPENSUBDIV_VERSION::Far
Definition refinerSurfaceFactory.h:19
OpenSubdiv::OPENSUBDIV_VERSION::Far::ConstPatchDescriptorArray
Vtr::ConstArray< PatchDescriptor > ConstPatchDescriptorArray
Definition patchDescriptor.h:129
OpenSubdiv::OPENSUBDIV_VERSION::Sdc::SchemeType
SchemeType
Enumerated type for all subdivision schemes supported by OpenSubdiv.
Definition types.h:20
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::Type
Type
Definition patchDescriptor.h:31
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::LINES
@ LINES
lines (useful for cage drawing)
Definition patchDescriptor.h:35
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::QUADS
@ QUADS
4-sided quadrilateral (bilinear)
Definition patchDescriptor.h:37
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::NON_PATCH
@ NON_PATCH
undefined
Definition patchDescriptor.h:32
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::LOOP
@ LOOP
regular triangular patch for the Loop scheme
Definition patchDescriptor.h:40
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GREGORY_TRIANGLE
@ GREGORY_TRIANGLE
Definition patchDescriptor.h:46
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::TRIANGLES
@ TRIANGLES
3-sided triangle
Definition patchDescriptor.h:38
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GREGORY_BOUNDARY
@ GREGORY_BOUNDARY
Definition patchDescriptor.h:44
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GREGORY_BASIS
@ GREGORY_BASIS
Definition patchDescriptor.h:45
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::POINTS
@ POINTS
points (useful for cage drawing)
Definition patchDescriptor.h:34
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GREGORY
@ GREGORY
Definition patchDescriptor.h:43
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::REGULAR
@ REGULAR
regular B-Spline patch for the Catmark scheme
Definition patchDescriptor.h:42
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::IsAdaptive
bool IsAdaptive() const
Returns true if the type is an adaptive patch.
Definition patchDescriptor.h:80
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GetType
Type GetType() const
Returns the type of the patch.
Definition patchDescriptor.h:70
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GetGregoryBasisPatchSize
static short GetGregoryBasisPatchSize()
Number of control vertices of Gregory patch basis (20).
Definition patchDescriptor.h:109
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GetNumControlVertices
short GetNumControlVertices() const
Returns the number of control vertices expected for a patch of the type described.
Definition patchDescriptor.h:93
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::PatchDescriptor
PatchDescriptor(PatchDescriptor const &d)
Copy Constructor.
Definition patchDescriptor.h:60
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::operator==
bool operator==(PatchDescriptor const other) const
True if the descriptors are identical.
Definition patchDescriptor.h:163
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GetRegularPatchSize
static short GetRegularPatchSize()
Number of control vertices of Regular Patches in table.
Definition patchDescriptor.h:103
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GetNumFVarControlVertices
short GetNumFVarControlVertices() const
Deprecated.
Definition patchDescriptor.h:98
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::PatchDescriptor
PatchDescriptor(int type)
Constructor.
Definition patchDescriptor.h:56
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::operator=
PatchDescriptor & operator=(PatchDescriptor const &d)
Assignment operator.
Definition patchDescriptor.h:64
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::IsAdaptive
static bool IsAdaptive(Type type)
Returns true if the type is an adaptive (non-linear) patch.
Definition patchDescriptor.h:75
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::operator<
bool operator<(PatchDescriptor const other) const
Allows ordering of patches by type.
Definition patchDescriptor.h:157
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GetGregoryPatchSize
static short GetGregoryPatchSize()
Number of control vertices of Gregory (and Gregory Boundary) Patches in table.
Definition patchDescriptor.h:106
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::print
void print() const
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::GetAdaptivePatchDescriptors
static Vtr::ConstArray< PatchDescriptor > GetAdaptivePatchDescriptors(Sdc::SchemeType type)
Returns a vector of all the legal patch descriptors for the given adaptive subdivision scheme.
OpenSubdiv::OPENSUBDIV_VERSION::Far::PatchDescriptor::PatchDescriptor
PatchDescriptor()
Default constructor.
Definition patchDescriptor.h:52
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::ConstArray
Definition array.h:36
types.h
types.h