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Traits.hh
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48
53 //=============================================================================
54 //
55 // CLASS Traits
56 //
57 //=============================================================================
58
59 #ifndef OPENMESH_SUBDIVIDER_ADAPTIVE_TRAITS_HH
60 #define OPENMESH_SUBDIVIDER_ADAPTIVE_TRAITS_HH
61
62
63 //== INCLUDES =================================================================
64
65 #include <map>
66 #include <OpenMesh/Core/Mesh/Types/TriMesh_ArrayKernelT.hh>
67
68 //== NAMESPACE ================================================================
69
70 namespace OpenMesh { // BEGIN_NS_OPENMESH
71 namespace Subdivider { // BEGIN_NS_DECIMATER
72 namespace Adaptive { // BEGIN_NS_ADAPTIVE
73
74
75 //== CLASS DEFINITION =========================================================
76
80 // typedef unsigned short state_t;
81 // const state_t mask_final = 1 << ((sizeof(state_t)*8)-1);
82 // const state_t mask_state = ~mask_final;
83
84 typedef int state_t;
85 typedef bool final_t;
86
87 struct State
88 {
89 int state : 31;
90 unsigned final : 1;
91 };
92
93 struct Traits : public OpenMesh::DefaultTraits
94 {
95
96 // add face normals
97 FaceAttributes( OpenMesh::Attributes::Normal );
98
99 // add vertex normals
100 VertexAttributes( OpenMesh::Attributes::Normal );
101
102 // add previous halfedge handle
103 HalfedgeAttributes( OpenMesh::Attributes::PrevHalfedge );
104
105 FaceTraits
106 {
107
108 private:
109
110 typedef typename Refs::Point Point;
111 typedef typename Refs::HalfedgeHandle HalfedgeHandle;
112 typedef std::map<state_t, Point> PositionHistory;
113
114 State state_;
115 HalfedgeHandle red_halfedge_;
116
117 PositionHistory pos_map_;
118
119 public:
120
121 // face state
122 state_t state() const { return state_t(state_.state); }
123 void set_state(const state_t _s) { state_.state = _s; }
124 void inc_state() { ++state_.state; }
125
126 // face not final if divided (loop) or edge not flipped (sqrt(3))
127 final_t final() const { return final_t(state_.final); }
128 void set_final() { state_.final = true; }
129 void set_not_final() { state_.final = false; }
130
131 // halfedge of dividing edge (red-green triangulation)
132 const HalfedgeHandle& red_halfedge() const { return red_halfedge_; }
133 void set_red_halfedge(const HalfedgeHandle& _h) { red_halfedge_ = _h; }
134
135 // position of face, depending on generation _i.
136 void set_position(const int& _i, const Point& _p) { pos_map_[_i] = _p; }
137 const Point position(const int& _i) {
138 if (pos_map_.find(_i) != pos_map_.end())
139 return pos_map_[_i];
140 else {
141
142 if (_i <= 0) {
143 const Point zero_point(0.0, 0.0, 0.0);
144 return zero_point;
145 }
146
147 return position(_i - 1);
148 }
149 }
150 }; // end class FaceTraits
151
152
153 EdgeTraits
154 {
155
156 private:
157
158 typedef typename Refs::Point Point;
159 typedef std::map<state_t, Point> PositionHistory;
160
161 State state_;
162 PositionHistory pos_map_;
163
164 public:
165
166 typedef typename Refs::Scalar Scalar;
167
168 // Scalar weight_;
169
170 // state of edge
171 state_t state() const { return state_t(state_.state); }
172 void set_state(const state_t _s) { state_.state = _s; }
173 void inc_state() { ++state_.state; }
174
175 // edge not final if dividing face (Loop) or edge not flipped (SQRT(3))
176 final_t final() const { return final_t(state_.final); }
177 void set_final() { state_.final = true; }
178 void set_not_final() { state_.final = false; }
179
180 // position of edge, depending on generation _i.
181 void set_position(const int& _i, const Point& _p) { pos_map_[_i] = _p; }
182 const Point position(const int& _i) {
183
184 if (pos_map_.find(_i) != pos_map_.end())
185 {
186 return pos_map_[_i];
187 }
188 else
189 {
190 if (_i <= 0)
191 {
192 const Point zero_point(0.0, 0.0, 0.0);
193 return zero_point;
194 }
195
196 return position(_i - 1);
197 }
198 }
199 }; // end class EdgeTraits
200
201
202 VertexTraits
203 {
204
205 private:
206
207 typedef typename Refs::Point Point;
208 typedef std::map<state_t, Point> PositionHistory;
209
210 State state_;
211
212 PositionHistory pos_map_;
213
214 public:
215
216 // state of vertex
217 state_t state() const { return state_.state; }
218 void set_state(const state_t _s) { state_.state = _s; }
219 void inc_state() { ++state_.state; }
220
221
222 // usually not needed by loop or sqrt(3)
223 final_t final() const { return state_.final; }
224 void set_final() { state_.final = true; }
225 void set_not_final() { state_.final = false; }
226
227 // position of vertex, depending on generation _i. (not for display)
228 void set_position(const int& _i, const Point& _p) { pos_map_[_i] = _p; }
229 const Point position(const int& _i) {
230
231 if (pos_map_.find(_i) != pos_map_.end())
232
233 return pos_map_[_i];
234
235 else {
236
237 if (_i <= 0) {
238
239 const Point zero_point(0.0, 0.0, 0.0);
240 return zero_point;
241 }
242
243 return position(_i - 1);
244 }
245 }
246 }; // end class VertexTraits
247 }; // end class Traits
248
249 //=============================================================================
250 } // END_NS_ADAPTIVE
251 } // END_NS_SUBDIVIDER
252 } // END_NS_OPENMESH
253 //=============================================================================
254 #endif // OPENMESH_SUBDIVIDER_ADAPTIVE_TRAITS_HH defined
255 //=============================================================================
OpenMesh::Subdivider::Adaptive::Traits
Definition: Traits.hh:93
OpenMesh
Definition: MeshItems.hh:64
OpenMesh::Attributes::PrevHalfedge
Add storage for previous halfedge (halfedges). The bit is set by default in the DefaultTraits.
Definition: Attributes.hh:89
OpenMesh::Subdivider::Adaptive::State
Definition: Traits.hh:87
OpenMesh::Attributes::Normal
Add normals to mesh item (vertices/faces)
Definition: Attributes.hh:87
OpenMesh::DefaultTraits::Point
Vec3f Point
The default coordinate type is OpenMesh::Vec3f.
Definition: Traits.hh:129
OpenMesh::DefaultTraits
Definition: Traits.hh:126
OpenMesh::Subdivider::Adaptive::state_t
CompositeTraits::state_t state_t
Definition: CompositeTraits.hh:255