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Traits.hh
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1 /*===========================================================================*\
2 * *
3 * OpenMesh *
4 * Copyright (C) 2001-2012 by Computer Graphics Group, RWTH Aachen *
5 * www.openmesh.org *
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8 * This file is part of OpenMesh. *
9 * *
10 * OpenMesh is free software: you can redistribute it and/or modify *
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12 * published by the Free Software Foundation, either version 3 of *
13 * the License, or (at your option) any later version with the *
14 * following exceptions: *
15 * *
16 * If other files instantiate templates or use macros *
17 * or inline functions from this file, or you compile this file and *
18 * link it with other files to produce an executable, this file does *
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20 * GNU Lesser General Public License. This exception does not however *
21 * invalidate any other reasons why the executable file might be *
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23 * *
24 * OpenMesh is distributed in the hope that it will be useful, *
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27 * GNU Lesser General Public License for more details. *
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33 \*===========================================================================*/
34
35 /*===========================================================================*\
36 * *
37 * $Revision: 736 $ *
38 * $Date: 2012-10-08 09:30:49 +0200 (Mo, 08 Okt 2012) $ *
39 * *
40 \*===========================================================================*/
41
46 //=============================================================================
47 //
48 // CLASS Traits
49 //
50 //=============================================================================
51
52 #ifndef OPENMESH_SUBDIVIDER_ADAPTIVE_TRAITS_HH
53 #define OPENMESH_SUBDIVIDER_ADAPTIVE_TRAITS_HH
54
55
56 //== INCLUDES =================================================================
57
58 #include <map>
59 #include <OpenMesh/Core/Mesh/Types/TriMesh_ArrayKernelT.hh>
60
61 //== NAMESPACE ================================================================
62
63 namespace OpenMesh { // BEGIN_NS_OPENMESH
64 namespace Subdivider { // BEGIN_NS_DECIMATER
65 namespace Adaptive { // BEGIN_NS_ADAPTIVE
66
67
68 //== CLASS DEFINITION =========================================================
69
73 // typedef unsigned short state_t;
74 // const state_t mask_final = 1 << ((sizeof(state_t)*8)-1);
75 // const state_t mask_state = ~mask_final;
76
77 typedef int state_t;
78 typedef bool final_t;
79
80 struct State
81 {
82 int state : 31;
83 unsigned final : 1;
84 };
85
86 struct Traits : public OpenMesh::DefaultTraits
87 {
88
89 // add face normals
90 FaceAttributes( OpenMesh::Attributes::Normal );
91
92 // add vertex normals
93 VertexAttributes( OpenMesh::Attributes::Normal );
94
95 // add previous halfedge handle
96 HalfedgeAttributes( OpenMesh::Attributes::PrevHalfedge );
97
98 FaceTraits
99 {
100
101 private:
102
103 typedef typename Refs::Point Point;
104 typedef typename Refs::HalfedgeHandle HalfedgeHandle;
105 typedef std::map<state_t, Point> PositionHistory;
106
107 State state_;
108 HalfedgeHandle red_halfedge_;
109
110 PositionHistory pos_map_;
111
112 public:
113
114 // face state
115 state_t state() const { return state_t(state_.state); }
116 void set_state(const state_t _s) { state_.state = _s; }
117 void inc_state() { ++state_.state; }
118
119 // face not final if divided (loop) or edge not flipped (sqrt(3))
120 final_t final() const { return final_t(state_.final); }
121 void set_final() { state_.final = true; }
122 void set_not_final() { state_.final = false; }
123
124 // halfedge of dividing edge (red-green triangulation)
125 const HalfedgeHandle& red_halfedge() const { return red_halfedge_; }
126 void set_red_halfedge(const HalfedgeHandle& _h) { red_halfedge_ = _h; }
127
128 // position of face, depending on generation _i.
129 void set_position(const int& _i, const Point& _p) { pos_map_[_i] = _p; }
130 const Point position(const int& _i) {
131 if (pos_map_.find(_i) != pos_map_.end())
132 return pos_map_[_i];
133 else {
134
135 if (_i <= 0) {
136 const Point zero_point(0.0, 0.0, 0.0);
137 return zero_point;
138 }
139
140 return position(_i - 1);
141 }
142 }
143 }; // end class FaceTraits
144
145
146 EdgeTraits
147 {
148
149 private:
150
151 typedef typename Refs::Point Point;
152 typedef std::map<state_t, Point> PositionHistory;
153
154 State state_;
155 PositionHistory pos_map_;
156
157 public:
158
159 typedef typename Refs::Scalar Scalar;
160
161 // Scalar weight_;
162
163 // state of edge
164 state_t state() const { return state_t(state_.state); }
165 void set_state(const state_t _s) { state_.state = _s; }
166 void inc_state() { ++state_.state; }
167
168 // edge not final if dividing face (Loop) or edge not flipped (SQRT(3))
169 final_t final() const { return final_t(state_.final); }
170 void set_final() { state_.final = true; }
171 void set_not_final() { state_.final = false; }
172
173 // position of edge, depending on generation _i.
174 void set_position(const int& _i, const Point& _p) { pos_map_[_i] = _p; }
175 const Point position(const int& _i) {
176
177 if (pos_map_.find(_i) != pos_map_.end())
178 {
179 return pos_map_[_i];
180 }
181 else
182 {
183 if (_i <= 0)
184 {
185 const Point zero_point(0.0, 0.0, 0.0);
186 return zero_point;
187 }
188
189 return position(_i - 1);
190 }
191 }
192 }; // end class EdgeTraits
193
194
195 VertexTraits
196 {
197
198 private:
199
200 typedef typename Refs::Point Point;
201 typedef std::map<state_t, Point> PositionHistory;
202
203 State state_;
204
205 PositionHistory pos_map_;
206
207 public:
208
209 // state of vertex
210 state_t state() const { return state_.state; }
211 void set_state(const state_t _s) { state_.state = _s; }
212 void inc_state() { ++state_.state; }
213
214
215 // usually not needed by loop or sqrt(3)
216 final_t final() const { return state_.final; }
217 void set_final() { state_.final = true; }
218 void set_not_final() { state_.final = false; }
219
220 // position of vertex, depending on generation _i. (not for display)
221 void set_position(const int& _i, const Point& _p) { pos_map_[_i] = _p; }
222 const Point position(const int& _i) {
223
224 if (pos_map_.find(_i) != pos_map_.end())
225
226 return pos_map_[_i];
227
228 else {
229
230 if (_i <= 0) {
231
232 const Point zero_point(0.0, 0.0, 0.0);
233 return zero_point;
234 }
235
236 return position(_i - 1);
237 }
238 }
239 }; // end class VertexTraits
240 }; // end class Traits
241
242 //=============================================================================
243 } // END_NS_ADAPTIVE
244 } // END_NS_SUBDIVIDER
245 } // END_NS_OPENMESH
246 //=============================================================================
247 #endif // OPENMESH_SUBDIVIDER_ADAPTIVE_TRAITS_HH defined
248 //=============================================================================