1 // Copyright (C) 2007-2012 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.
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)
21 #include "MEDCouplingMesh.hxx"
22 #include "MEDCouplingUMesh.hxx"
23 #include "MEDCouplingMemArray.hxx"
24 #include "MEDCouplingFieldDouble.hxx"
25 #include "MEDCouplingFieldDiscretization.hxx"
26 #include "MEDCouplingAutoRefCountObjectPtr.hxx"
34 using namespace ParaMEDMEM;
36 MEDCouplingMesh::MEDCouplingMesh():_time(0.),_iteration(-1),_order(-1)
40 MEDCouplingMesh::MEDCouplingMesh(const MEDCouplingMesh& other):_name(other._name),_description(other._description),
41 _time(other._time),_iteration(other._iteration),
42 _order(other._order),_time_unit(other._time_unit)
47 * This method is only for ParaMEDMEM in ParaFIELD constructor.
49 bool MEDCouplingMesh::isStructured() const
51 return getType()==CARTESIAN;
54 bool MEDCouplingMesh::isEqualIfNotWhy(const MEDCouplingMesh *other, double prec, std::string& reason) const throw(INTERP_KERNEL::Exception)
57 throw INTERP_KERNEL::Exception("MEDCouplingMesh::isEqualIfNotWhy : other instance is NULL !");
58 std::ostringstream oss; oss.precision(15);
59 if(_name!=other->_name)
61 oss << "Mesh names differ : this name = \"" << _name << "\" and other name = \"" << other->_name << "\" !";
65 if(_description!=other->_description)
67 oss << "Mesh descriptions differ : this description = \"" << _description << "\" and other description = \"" << other->_description << "\" !";
71 if(_iteration!=other->_iteration)
73 oss << "Mesh iterations differ : this iteration = \"" << _iteration << "\" and other iteration = \"" << other->_iteration << "\" !";
77 if(_order!=other->_order)
79 oss << "Mesh orders differ : this order = \"" << _order << "\" and other order = \"" << other->_order << "\" !";
83 if(_time_unit!=other->_time_unit)
85 oss << "Mesh time units differ : this time unit = \"" << _time_unit << "\" and other time unit = \"" << other->_time_unit << "\" !";
89 if(fabs(_time-other->_time)>=1e-12)
91 oss << "Mesh times differ : this time = \"" << _time << "\" and other time = \"" << other->_time << "\" !";
98 bool MEDCouplingMesh::isEqual(const MEDCouplingMesh *other, double prec) const throw(INTERP_KERNEL::Exception)
101 return isEqualIfNotWhy(other,prec,tmp);
105 * This method checks geo equivalence between two meshes : 'this' and 'other'.
106 * If no exception is throw 'this' and 'other' are geometrically equivalent regarding 'levOfCheck' level.
107 * This method is typically used to change the mesh of a field "safely" depending the 'levOfCheck' level considered.
109 * @param levOfCheck input that specifies the level of check specified. The possible values are listed below.
110 * @param prec input that specifies precision for double float data used for comparison in meshes.
111 * @param cellCor output array not always informed (depending 'levOfCheck' param) that gives the corresponding array for cells from 'other' to 'this'.
112 * @param nodeCor output array not always informed (depending 'levOfCheck' param) that gives the corresponding array for nodes from 'other' to 'this'.
114 * Possible values for levOfCheck :
115 * - 0 for strict equality. This is the strongest level. 'cellCor' and 'nodeCor' params are never informed.
116 * - 10,11,12 for less strict equality. Two meshes are compared geometrically. In case of success 'cellCor' and 'nodeCor' are informed. Warning ! These equivalences are CPU/Mem costly. The 3 values correspond respectively to policy used for cell comparison (see MEDCouplingUMesh::zipConnectivityTraducer to have more details)
117 * - 20,21,22, for less strict equality. Two meshes are compared geometrically. The difference with the previous version is that nodes(coordinates) are expected to be the same between this and other. In case of success 'cellCor' is informed. Warning ! These equivalences are CPU/Mem costly. The 3 values correspond respectively to policy used for cell comparison (see MEDCouplingUMesh::zipConnectivityTraducer to have more details)
118 * - 1 for fast 'equality'. This is a lazy level. Just number of cells and number of nodes are considered here and 3 cells (begin,middle,end)
119 * - 2 for deep 'equality' as 0 option except that no control is done on all strings in mesh.
121 void MEDCouplingMesh::checkGeoEquivalWith(const MEDCouplingMesh *other, int levOfCheck, double prec,
122 DataArrayInt *&cellCor, DataArrayInt *&nodeCor) const throw(INTERP_KERNEL::Exception)
132 if(!isEqual(other,prec))
133 throw INTERP_KERNEL::Exception("checkGeoFitWith : Meshes are not equal !");
140 checkDeepEquivalWith(other,levOfCheck-10,prec,cellCor,nodeCor);
147 checkDeepEquivalOnSameNodesWith(other,levOfCheck-20,prec,cellCor);
152 checkFastEquivalWith(other,prec);
157 if(!isEqualWithoutConsideringStr(other,prec))
158 throw INTERP_KERNEL::Exception("checkGeoFitWith : Meshes are not equal without considering strings !");
162 throw INTERP_KERNEL::Exception("checkGeoFitWith : Invalid levOfCheck specified ! Value must be in 0,1,2,10,11 or 12.");
167 * Given a nodeIds range ['partBg','partEnd'), this method returns the set of cell ids in ascendant order whose connectivity of
168 * these cells are fully included in the range. As a consequence the returned set of cell ids does \b not \b always fit the nodes in ['partBg','partEnd')
169 * This method returns the corresponding cells in a newly created array that the caller has the responsability.
171 DataArrayInt *MEDCouplingMesh::getCellIdsFullyIncludedInNodeIds(const int *partBg, const int *partEnd) const
173 std::vector<int> crest;
174 std::set<int> p(partBg,partEnd);
175 int nbOfCells=getNumberOfCells();
176 for(int i=0;i<nbOfCells;i++)
178 std::vector<int> conn;
179 getNodeIdsOfCell(i,conn);
181 for(std::vector<int>::const_iterator iter=conn.begin();iter!=conn.end() && cont;iter++)
182 if(p.find(*iter)==p.end())
187 DataArrayInt *ret=DataArrayInt::New();
188 ret->alloc((int)crest.size(),1);
189 std::copy(crest.begin(),crest.end(),ret->getPointer());
194 * This method checks fastly that 'this' and 'other' are equal. All common checks are done here.
196 void MEDCouplingMesh::checkFastEquivalWith(const MEDCouplingMesh *other, double prec) const throw(INTERP_KERNEL::Exception)
198 if(getMeshDimension()!=other->getMeshDimension())
199 throw INTERP_KERNEL::Exception("checkFastEquivalWith : Mesh dimensions are not equal !");
200 if(getSpaceDimension()!=other->getSpaceDimension())
201 throw INTERP_KERNEL::Exception("checkFastEquivalWith : Space dimensions are not equal !");
202 if(getNumberOfCells()!=other->getNumberOfCells())
203 throw INTERP_KERNEL::Exception("checkFastEquivalWith : number of cells are not equal !");
207 * This method is very poor and looks only if 'this' and 'other' are candidate for merge of fields lying repectively on them.
209 bool MEDCouplingMesh::areCompatibleForMerge(const MEDCouplingMesh *other) const
211 if(getMeshDimension()!=other->getMeshDimension())
213 if(getSpaceDimension()!=other->getSpaceDimension())
219 * This method builds a field lying on 'this' with 'nbOfComp' components.
220 * 'func' is a pointer that points to a function that takes 2 arrays in parameter and returns a boolean.
221 * The first array is a in-param of size this->getSpaceDimension and the second an out param of size 'nbOfComp'.
222 * The return field will have type specified by 't'. 't' is also used to determine where values of field will be
224 * Contrary to other fillFromAnalytic methods this method requests a C++ function pointer as input.
225 * The 'func' is a callback that takes as first parameter an input array of size 'this->getSpaceDimension()',
226 * the second parameter is a pointer on a valid zone of size at least equal to 'nbOfComp' values. And too finish
227 * the returned value is a boolean that is equal to False in case of invalid evaluation (log(0) for example...)
228 * @param t type of field returned and specifies where the evaluation of func will be done.
229 * @param nbOfComp number of components of returned field.
230 * @param func pointer to a function that should return false if the evaluation failed. (division by 0. for example)
231 * @return field with counter = 1.
233 MEDCouplingFieldDouble *MEDCouplingMesh::fillFromAnalytic(TypeOfField t, int nbOfComp, FunctionToEvaluate func) const
235 MEDCouplingAutoRefCountObjectPtr<MEDCouplingFieldDouble> ret=MEDCouplingFieldDouble::New(t,NO_TIME);
237 ret->fillFromAnalytic(nbOfComp,func);
243 * This method copyies all tiny strings from other (name and components name).
244 * @throw if other and this have not same mesh type.
246 void MEDCouplingMesh::copyTinyStringsFrom(const MEDCouplingMesh *other) throw(INTERP_KERNEL::Exception)
249 _description=other->_description;
250 _time_unit=other->_time_unit;
254 * This method copies all attributes that are \b NOT arrays in this.
255 * All tiny attributes not usefully for state of 'this' are ignored.
257 void MEDCouplingMesh::copyTinyInfoFrom(const MEDCouplingMesh *other) throw(INTERP_KERNEL::Exception)
259 copyTinyStringsFrom(other);
261 _iteration=other->_iteration;
262 _order=other->_order;
266 * This method builds a field lying on 'this' with 'nbOfComp' components.
267 * 'func' is a string that is the expression to evaluate.
268 * The return field will have type specified by 't'. 't' is also used to determine where values of field will be
270 * This method is equivalent to those taking a C++ function pointer except that here the 'func' is informed by
271 * an interpretable input string.
273 * The dynamic interpretor uses \b alphabetical \b order to assign the component id to the var name.
275 * - "2*x+z" func : x stands for component #0 and z stands for component #1 \b NOT #2 !
277 * Some var names are reserved and have special meaning. IVec stands for (1,0,0,...). JVec stands for (0,1,0...).
278 * KVec stands for (0,0,1,...)... These keywords allows too differentate the evaluation of output components each other.
280 * If 'nbOfComp' equals to 4 for example and that 'this->getSpaceDimension()' equals to 3.
282 * For the input tuple T = (1.,3.,7.) :
283 * - '2*x+z' will return (5.,5.,5.,5.)
284 * - '2*x+0*y+z' will return (9.,9.,9.,9.)
285 * - '2*x*IVec+(x+z)*LVec' will return (2.,0.,0.,4.)
286 * - '2*x*IVec+(y+z)*KVec' will return (2.,0.,10.,0.)
288 * @param t type of field returned and specifies where the evaluation of func will be done.
289 * @param nbOfComp number of components of returned field.
290 * @param func expression.
291 * @return field with counter = 1.
293 MEDCouplingFieldDouble *MEDCouplingMesh::fillFromAnalytic(TypeOfField t, int nbOfComp, const char *func) const
295 MEDCouplingAutoRefCountObjectPtr<MEDCouplingFieldDouble> ret=MEDCouplingFieldDouble::New(t,NO_TIME);
297 ret->fillFromAnalytic(nbOfComp,func);
303 * This method builds a field lying on 'this' with 'nbOfComp' components.
304 * 'func' is a string that is the expression to evaluate.
305 * The return field will have type specified by 't'. 't' is also used to determine where values of field will be
306 * evaluate. This method is different than MEDCouplingMesh::fillFromAnalytic, because the info on components are used here to determine vars pos in 'func'.
308 * @param t type of field returned and specifies where the evaluation of func will be done.
309 * @param nbOfComp number of components of returned field.
310 * @param func expression.
311 * @return field with counter = 1.
313 MEDCouplingFieldDouble *MEDCouplingMesh::fillFromAnalytic2(TypeOfField t, int nbOfComp, const char *func) const
315 MEDCouplingAutoRefCountObjectPtr<MEDCouplingFieldDouble> ret=MEDCouplingFieldDouble::New(t,NO_TIME);
317 ret->fillFromAnalytic2(nbOfComp,func);
323 * This method builds a field lying on 'this' with 'nbOfComp' components.
324 * 'func' is a string that is the expression to evaluate.
325 * The return field will have type specified by 't'. 't' is also used to determine where values of field will be
326 * evaluate. This method is different than MEDCouplingMesh::fillFromAnalytic, because 'varsOrder' specifies the pos to assign of vars in 'func'.
328 * @param t type of field returned and specifies where the evaluation of func will be done.
329 * @param nbOfComp number of components of returned field.
330 * @param func expression.
331 * @return field with counter = 1.
333 MEDCouplingFieldDouble *MEDCouplingMesh::fillFromAnalytic3(TypeOfField t, int nbOfComp, const std::vector<std::string>& varsOrder, const char *func) const
335 MEDCouplingAutoRefCountObjectPtr<MEDCouplingFieldDouble> ret=MEDCouplingFieldDouble::New(t,NO_TIME);
337 ret->fillFromAnalytic3(nbOfComp,varsOrder,func);
343 * retruns a newly created mesh with counter=1
344 * that is the union of \b mesh1 and \b mesh2 if possible. The cells of \b mesh2 will appear after cells of \b mesh1. Idem for nodes.
345 * The only contraint is that \b mesh1 an \b mesh2 have the same mesh types. If it is not the case please use the other API of MEDCouplingMesh::MergeMeshes,
346 * with input vector of meshes.
348 MEDCouplingMesh *MEDCouplingMesh::MergeMeshes(const MEDCouplingMesh *mesh1, const MEDCouplingMesh *mesh2) throw(INTERP_KERNEL::Exception)
351 throw INTERP_KERNEL::Exception("MEDCouplingMesh::MergeMeshes : first parameter is an empty mesh !");
353 throw INTERP_KERNEL::Exception("MEDCouplingMesh::MergeMeshes : second parameter is an empty mesh !");
354 return mesh1->mergeMyselfWith(mesh2);
358 * retruns a newly created mesh with counter=1
359 * that is the union of meshes if possible. The cells of \b meshes[1] will appear after cells of \b meshes[0]. Idem for nodes.
360 * This method performs a systematic conversion to unstructured meshes before performing aggregation contrary to the other ParaMEDMEM::MEDCouplingMesh::MergeMeshes with
361 * two parameters that work only on the same type of meshes. So here it is possible to mix different type of meshes.
363 MEDCouplingMesh *MEDCouplingMesh::MergeMeshes(std::vector<const MEDCouplingMesh *>& meshes) throw(INTERP_KERNEL::Exception)
365 std::vector< MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> > ms1(meshes.size());
366 std::vector< const MEDCouplingUMesh * > ms2(meshes.size());
367 for(std::size_t i=0;i<meshes.size();i++)
371 MEDCouplingUMesh *cur=meshes[i]->buildUnstructured();
372 ms1[i]=cur; ms2[i]=cur;
376 std::ostringstream oss; oss << "MEDCouplingMesh::MergeMeshes(std::vector<const MEDCouplingMesh *>& meshes) : mesh at pos #" << i << " of input vector of size " << meshes.size() << " is empty !";
377 throw INTERP_KERNEL::Exception(oss.str().c_str());
380 return MEDCouplingUMesh::MergeUMeshes(ms2);
384 * \param [in] type the geometric type for which the dimension is asked.
385 * \return the dimension associated to the input geometric type \a type.
387 * \throw if type is equal to \c INTERP_KERNEL::NORM_ERROR or to an unexisting geometric type.
389 int MEDCouplingMesh::GetDimensionOfGeometricType(INTERP_KERNEL::NormalizedCellType type) throw(INTERP_KERNEL::Exception)
391 const INTERP_KERNEL::CellModel& cm=INTERP_KERNEL::CellModel::GetCellModel(type);
392 return (int) cm.getDimension();
396 * \param [in] type the geometric type for which the representation is asked.
397 * \return the string representation corresponding to the input geometric type \a type.
399 * \throw if type is equal to \c INTERP_KERNEL::NORM_ERROR or to an unexisting geometric type.
401 const char *MEDCouplingMesh::GetReprOfGeometricType(INTERP_KERNEL::NormalizedCellType type) throw(INTERP_KERNEL::Exception)
403 const INTERP_KERNEL::CellModel& cm=INTERP_KERNEL::CellModel::GetCellModel(type);
407 void MEDCouplingMesh::getCellsContainingPoint(const double *pos, double eps, std::vector<int>& elts) const
409 int ret=getCellContainingPoint(pos,eps);
413 void MEDCouplingMesh::getCellsContainingPoints(const double *pos, int nbOfPoints, double eps, std::vector<int>& elts, std::vector<int>& eltsIndex) const
415 eltsIndex.resize(nbOfPoints+1);
418 int spaceDim=getSpaceDimension();
419 const double *work=pos;
420 for(int i=0;i<nbOfPoints;i++,work+=spaceDim)
422 int ret=getCellContainingPoint(work,eps);
426 eltsIndex[i+1]=eltsIndex[i]+1;
429 eltsIndex[i+1]=eltsIndex[i];
434 * This method writes a file in VTK format into file 'fileName'.
435 * An exception is thrown if the file is not writable.
437 void MEDCouplingMesh::writeVTK(const char *fileName) const throw(INTERP_KERNEL::Exception)
440 writeVTKAdvanced(fileName,cda,pda);
443 void MEDCouplingMesh::writeVTKAdvanced(const char *fileName, const std::string& cda, const std::string& pda) const throw(INTERP_KERNEL::Exception)
445 std::ofstream ofs(fileName);
446 ofs << "<VTKFile type=\"" << getVTKDataSetType() << "\" version=\"0.1\" byte_order=\"LittleEndian\">\n";
447 writeVTKLL(ofs,cda,pda);
448 ofs << "</VTKFile>\n";