1 // Copyright (C) 2007-2014 CEA/DEN, EDF R&D
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
19 // Author : Anthony Geay (CEA/DEN)
20 #ifndef __INTERPOLATIONCURVE_TXX__
21 #define __INTERPOLATIONCURVE_TXX__
23 #include "InterpolationCurve.hxx"
24 #include "InterpolationOptions.hxx"
25 #include "CurveIntersectorP0P0.txx"
26 #include "CurveIntersectorP1P0.txx"
27 #include "CurveIntersectorP0P1.txx"
28 #include "CurveIntersectorP1P1.txx"
33 namespace INTERP_KERNEL
36 * \defgroup interpolationCurve InterpolationCurve
38 * \class InterpolationCurve
39 * \brief Class used to compute the coefficients of the interpolation matrix between
40 * two local meshes in two dimensions.
42 template<class RealCurve>
43 InterpolationCurve<RealCurve>::InterpolationCurve()
47 template<class RealCurve>
48 InterpolationCurve<RealCurve>::InterpolationCurve (const InterpolationOptions& io)
49 :Interpolation< InterpolationCurve<RealCurve> >(io)
53 /** \brief Main function to interpolate 1D meshes.
54 \details The algorithm proceeds in two steps: first a filtering process reduces the number of pairs of elements for which the
55 * calculation must be carried out by eliminating pairs that do not intersect based on their bounding boxes. Then, the
56 * volume of intersection is calculated by an object of type IntersectorPlanar for the remaining pairs, and entered into the
57 * intersection matrix.
59 * The matrix is partially sparse : it is a vector of maps of integer - double pairs.
60 * The length of the vector is equal to the number of target elements - for each target element there is a map, regardless
61 * of whether the element intersects any source elements or not. But in the maps there are only entries for those source elements
62 * which have a non-zero intersection volume with the target element. The vector has indices running from
63 * 0 to (#target elements - 1), meaning that the map for target element i is stored at index i - 1. In the maps, however,
64 * the indexing is more natural : the intersection volume of the target element i with source element j is found at matrix[i-1][j].
67 * @param myMeshS Planar source mesh
68 * @Param myMeshT Planar target mesh
69 * @return vector containing for each element i of the source mesh, a map giving for each element j
70 * of the target mesh which i intersects, the area of the intersection
73 template<class RealCurve>
74 template<class MyMeshType, class MatrixType>
75 int InterpolationCurve<RealCurve>::interpolateMeshes (const MyMeshType& myMeshS,
76 const MyMeshType& myMeshT,
78 const std::string& method)
80 static const int SPACEDIM=MyMeshType::MY_SPACEDIM;
81 typedef typename MyMeshType::MyConnType ConnType;
82 static const NumberingPolicy numPol = MyMeshType::My_numPol;
84 long global_start = clock();
87 long nbMailleS = myMeshS.getNumberOfElements();
88 long nbMailleT = myMeshT.getNumberOfElements();
90 CurveIntersector<MyMeshType,MatrixType>* intersector=0;
93 intersector = new CurveIntersectorP0P0<MyMeshType,MatrixType>
95 InterpolationOptions::getPrecision(),
96 InterpolationOptions::getBoundingBoxAdjustmentAbs(),
97 InterpolationOptions::getMedianPlane(),
98 InterpolationOptions::getPrintLevel());
100 else if(method=="P0P1")
102 intersector = new CurveIntersectorP0P1<MyMeshType,MatrixType>
104 InterpolationOptions::getPrecision(),
105 InterpolationOptions::getBoundingBoxAdjustmentAbs(),
106 InterpolationOptions::getMedianPlane(),
107 InterpolationOptions::getPrintLevel());
109 else if(method=="P1P0")
111 intersector = new CurveIntersectorP1P0<MyMeshType,MatrixType>
113 InterpolationOptions::getPrecision(),
114 InterpolationOptions::getBoundingBoxAdjustmentAbs(),
115 InterpolationOptions::getMedianPlane(),
116 InterpolationOptions::getPrintLevel());
118 else if(method=="P1P1")
120 intersector = new CurveIntersectorP1P1<MyMeshType,MatrixType>
122 InterpolationOptions::getPrecision(),
123 InterpolationOptions::getBoundingBoxAdjustmentAbs(),
124 InterpolationOptions::getMedianPlane(),
125 InterpolationOptions::getPrintLevel());
128 throw INTERP_KERNEL::Exception("Invalid method specified ! Must be in : \"P0P0\" \"P0P1\" \"P1P0\" or \"P1P1\"");
129 /****************************************************************/
130 /* Create a search tree based on the bounding boxes */
131 /* Instanciate the intersector and initialise the result vector */
132 /****************************************************************/
134 long start_filtering=clock();
136 std::vector<double> bbox;
137 intersector->createBoundingBoxes(myMeshS,bbox); // create the bounding boxes
138 intersector->adjustBoundingBoxes(bbox, InterpolationOptions::getBoundingBoxAdjustmentAbs());
139 BBTree<SPACEDIM,ConnType> my_tree(&bbox[0], 0, 0, nbMailleS);//creating the search structure
141 long end_filtering = clock();
143 result.resize(intersector->getNumberOfRowsOfResMatrix());//on initialise.
145 /****************************************************/
146 /* Loop on the target cells - core of the algorithm */
147 /****************************************************/
148 long start_intersection = clock();
149 const ConnType *connIndxT = myMeshT.getConnectivityIndexPtr();
150 for(int iT=0; iT<nbMailleT; iT++)
152 int nb_nodesT = connIndxT[iT+1] - connIndxT[iT];
153 std::vector<int> intersecting_elems;
154 double bb[2*SPACEDIM];
155 intersector->getElemBB(bb,myMeshT,OTT<ConnType,numPol>::indFC(iT),nb_nodesT);
156 my_tree.getIntersectingElems(bb, intersecting_elems);
157 intersector->intersectCells(iT,intersecting_elems,result);
158 counter += intersecting_elems.size();
160 int ret = intersector->getNumberOfColsOfResMatrix();
163 if (InterpolationOptions::getPrintLevel() >= 1)
165 long end_intersection=clock();
166 std::cout << "Filtering time= " << end_filtering-start_filtering << std::endl;
167 std::cout << "Intersection time= " << end_intersection-start_intersection << std::endl;
168 long global_end =clock();
169 std::cout << "Number of computed intersections = " << counter << std::endl;
170 std::cout << "Global time= " << global_end - global_start << std::endl;