DGtal 1.3.0
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LambdaMST3DBy2D.ih
1/**
2 * This program is free software: you can redistribute it and/or modify
3 * it under the terms of the GNU Lesser General Public License as
4 * published by the Free Software Foundation, either version 3 of the
5 * License, or (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program. If not, see <http://www.gnu.org/licenses/>.
14 *
15 **/
16
17/**
18 * @file LambdaMST3DBy2D.ih
19 * @author Kacper Pluta (\c kacper.pluta@esiee.fr )
20 * Laboratoire d'Informatique Gaspard-Monge - LIGM, France
21 *
22 * @date 2015/06/16
23 *
24 * This file is part of the DGtal library.
25 */
26
27#include <stdexcept>
28
29namespace DGtal
30{
31 inline
32 TangentFromDSS3DBy2DFunctor::Vector3D
33 TangentFromDSS3DBy2DFunctor::operator() ( MAIN_AXIS mainAxis, const Vector2D & v0, const Vector2D & v1 ) const
34 {
35 Vector3D tangent;
36 if ( mainAxis == X )
37 {
38 if ( v1[1] == 0 || ( v0[0] == 0 && v1[0] == 0 ) )
39 {
40 tangent[0] = v0[0];
41 tangent[1] = v0[1];
42 tangent[2] = v1[1];
43 }
44 else
45 {
46 if ( v0[1] == 0 )
47 {
48 tangent[0] = v1[0];
49 tangent[1] = 0;
50 tangent[2] = v1[1];
51 }
52 else
53 {
54 tangent[0] = v1[0] * v0[0];
55 tangent[1] = v1[0] * v0[1];
56 tangent[2] = v0[0] * v1[1];
57 }
58 }
59 }
60 else if ( mainAxis == Y )
61 {
62 if ( v0[0] == 0 || ( v1[0] == 0 && v0[1] == 0 ) )
63 {
64 tangent[0] = v0[0];
65 tangent[1] = v1[0];
66 tangent[2] = v1[1];
67 }
68 else
69 {
70 if ( v1[1] == 0 )
71 {
72 tangent[0] = v0[0];
73 tangent[1] = v0[1];
74 tangent[2] = 0;
75 }
76 else
77 {
78 tangent[0] = v1[0] * v0[0];
79 tangent[1] = v1[0] * v0[1];
80 tangent[2] = v0[1] * v1[1];
81 }
82 }
83 }
84 else
85 {
86 if ( v0[0] == 0 || ( v0[1] == 0 && v1[1] == 0 ) )
87 {
88 tangent[0] = v0[0];
89 tangent[1] = v1[0];
90 tangent[2] = v1[1];
91 }
92 else
93 {
94 if ( v1[0] == 0 )
95 {
96 tangent[0] = v0[0];
97 tangent[1] = 0;
98 tangent[2]= v0[1];
99 }
100 else
101 {
102 tangent[0] = v0[0] * v1[1];
103 tangent[1] = v1[0] * v0[1];
104 tangent[2] = v0[1] * v1[1];
105 }
106 }
107 }
108 return tangent;
109 }
110
111
112 template < typename Iterator3D, typename Functor, typename LambdaFunctor, int CONNECTIVITY >
113 inline
114 LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::LambdaMST3DBy2DEstimator() : myBegin(), myEnd()
115 {
116 //projections
117 std::vector < Dimension > v1, v2, v3;
118 v1.push_back ( 0 );
119 v1.push_back ( 1 );
120 v2.push_back ( 0 );
121 v2.push_back ( 2 );
122 v3.push_back ( 1 );
123 v3.push_back ( 2 );
124 myProjXY.init ( v1.begin ( ), v1.end ( ) );
125 myProjXZ.init ( v2.begin ( ), v2.end ( ) );
126 myProjYZ.init ( v3.begin ( ), v3.end ( ) );
127 }
128
129 template < typename Iterator3D, typename Functor, typename LambdaFunctor, int CONNECTIVITY >
130 inline
131 void
132 LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::init ( Iterator3D itB, Iterator3D itE,
133 MAIN_AXIS axis )
134 {
135 myBegin = itB;
136 myEnd = itE;
137 myAxis = axis;
138 tXY.clear ( ); tYZ.clear ( ); tXZ.clear ( );
139 for ( auto it = myBegin; it != myEnd; ++it )
140 {
141 if ( axis == MAIN_AXIS::X )
142 {
143 tXY.push_back ( myProjXY ( *it ) );
144 tXZ.push_back ( myProjXZ ( *it ) );
145 }
146 else if ( axis == MAIN_AXIS::Y )
147 {
148 tXY.push_back ( myProjXY ( *it ) );
149 tYZ.push_back ( myProjYZ ( *it ) );
150 }
151 else
152 {
153 tXZ.push_back ( myProjXZ ( *it ) );
154 tYZ.push_back ( myProjYZ ( *it ) );
155 }
156 }
157 }
158
159 template < typename Iterator3D, typename Functor, typename LambdaFunctor, int CONNECTIVITY >
160 inline
161 bool
162 LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::isValid ( ) const
163 {
164 return ( myBegin != myEnd );
165 }
166
167 template < typename Iterator3D, typename Functor, typename LambdaFunctor, int CONNECTIVITY >
168 inline
169 typename LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::RealVector3D
170 LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::eval ( const Point3D & point )
171 {
172 assert ( isValid ( ) );
173 Iterator3D it = std::find ( myBegin, myEnd, point );
174 if ( it == myEnd )
175 throw std::runtime_error ( "L-MST3Dby2D::eval: The point does not belong to the curve!" );
176
177 if ( myAxis == MAIN_AXIS::X )
178 return myFunctor ( MAIN_AXIS::X, Estimate2DTangent ( tXY.cbegin ( ), tXY.cend ( ), myProjXY ( *it ) ),
179 Estimate2DTangent ( tXZ.cbegin ( ), tXZ.cend ( ), myProjXZ ( *it ) ) );
180 else if ( myAxis == MAIN_AXIS::Y )
181 return myFunctor ( MAIN_AXIS::Y, Estimate2DTangent ( tXY.cbegin ( ), tXY.cend ( ), myProjXY ( *it ) ),
182 Estimate2DTangent ( tYZ.cbegin ( ), tYZ.cend ( ), myProjYZ ( *it ) ) );
183 else
184 return myFunctor ( MAIN_AXIS::Z, Estimate2DTangent ( tXZ.cbegin ( ), tXZ.cend ( ), myProjXZ ( *it ) ),
185 Estimate2DTangent ( tYZ.cbegin ( ), tYZ.cend ( ), myProjYZ ( *it ) ) );
186 }
187
188 template < typename Iterator3D, typename Functor, typename LambdaFunctor, int CONNECTIVITY >
189 template < typename OutputIterator >
190 inline
191 OutputIterator
192 LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::eval ( Iterator3D itb, Iterator3D ite,
193 OutputIterator result )
194 {
195 assert ( myBegin != myEnd && isValid() && myBegin <= itb && ite <= myEnd && itb != ite );
196 std::vector < RealVector2D > tangent1;
197 std::vector < RealVector2D > tangent2;
198
199 auto offsetB = std::distance ( myBegin, itb );
200 auto offsetE = std::distance ( myEnd, ite );
201
202 if ( myAxis == MAIN_AXIS::X )
203 {
204 Estimate2DTangent ( tXY.cbegin ( ) + offsetB, tXY.cend ( ) + offsetE, back_inserter ( tangent1 ) );
205 Estimate2DTangent ( tXZ.cbegin ( ) + offsetB, tXZ.cend ( ) + offsetE, back_inserter ( tangent2 ) );
206 }
207 else if ( myAxis == MAIN_AXIS::Y )
208 {
209 Estimate2DTangent ( tXY.cbegin ( ) + offsetB, tXY.cend ( ) + offsetE, back_inserter ( tangent1 ) );
210 Estimate2DTangent ( tYZ.cbegin ( ) + offsetB, tYZ.cend ( ) + offsetE, back_inserter ( tangent2 ) );
211 }
212 else
213 {
214 Estimate2DTangent ( tXZ.cbegin ( ) + offsetB, tXZ.cend ( ) + offsetE, back_inserter ( tangent1 ) );
215 Estimate2DTangent ( tYZ.cbegin ( ) + offsetB, tYZ.cend ( ) + offsetE, back_inserter ( tangent2 ) );
216 }
217
218 for ( auto it = itb; it < ite; ++it )
219 result++ = myFunctor ( myAxis, tangent1[std::distance ( itb, it )], tangent2[std::distance ( itb, it )] );
220
221 return result;
222 }
223
224
225 template < typename Iterator3D, typename Functor, typename LambdaFunctor, int CONNECTIVITY >
226 inline
227 typename LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::RealVector2D
228 LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::Estimate2DTangent
229 ( const TCurve2D::const_iterator itb, TCurve2D::const_iterator ite, const Point2D & point )
230 {
231 Segmentation2D segmenter ( itb, ite, SegmentComputer2D ( ) );
232 TEstimator lmst;
233 lmst.attach ( segmenter );
234 lmst.init ( itb, ite );
235 return lmst.eval ( point );
236 }
237
238
239 template < typename Iterator3D, typename Functor, typename LambdaFunctor, int CONNECTIVITY >
240 template < typename OutputIterator >
241 inline
242 OutputIterator
243 LambdaMST3DBy2DEstimator< Iterator3D, Functor, LambdaFunctor, CONNECTIVITY >::Estimate2DTangent
244 ( TCurve2D::const_iterator itb, TCurve2D::const_iterator ite, OutputIterator result )
245 {
246 Segmentation2D segmenter ( itb, ite, SegmentComputer2D ( ) );
247 TEstimator lmst;
248 lmst.attach ( segmenter );
249 lmst.init ( itb, ite );
250 return lmst.eval ( itb, ite, result );
251 }
252}
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