LCOV - code coverage report
Current view: top level - ugbase/lib_grid/algorithms/geom_obj_util - misc_util_impl.hpp (source / functions) Coverage Total Hit
Test: coverage.info Lines: 0.0 % 35 0
Test Date: 2025-09-21 23:31:46 Functions: 0.0 % 31 0

            Line data    Source code
       1              : /*
       2              :  * Copyright (c) 2009-2015:  G-CSC, Goethe University Frankfurt
       3              :  * Author: Sebastian Reiter
       4              :  * 
       5              :  * This file is part of UG4.
       6              :  * 
       7              :  * UG4 is free software: you can redistribute it and/or modify it under the
       8              :  * terms of the GNU Lesser General Public License version 3 (as published by the
       9              :  * Free Software Foundation) with the following additional attribution
      10              :  * requirements (according to LGPL/GPL v3 §7):
      11              :  * 
      12              :  * (1) The following notice must be displayed in the Appropriate Legal Notices
      13              :  * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
      14              :  * 
      15              :  * (2) The following notice must be displayed at a prominent place in the
      16              :  * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
      17              :  * 
      18              :  * (3) The following bibliography is recommended for citation and must be
      19              :  * preserved in all covered files:
      20              :  * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
      21              :  *   parallel geometric multigrid solver on hierarchically distributed grids.
      22              :  *   Computing and visualization in science 16, 4 (2013), 151-164"
      23              :  * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
      24              :  *   flexible software system for simulating pde based models on high performance
      25              :  *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
      26              :  * 
      27              :  * This program is distributed in the hope that it will be useful,
      28              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      29              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
      30              :  * GNU Lesser General Public License for more details.
      31              :  */
      32              : 
      33              : #ifndef __H__LIB_GRID__MISC_UTIL__IMPL__
      34              : #define __H__LIB_GRID__MISC_UTIL__IMPL__
      35              : 
      36              : #include "misc_util.h"
      37              : #include "lib_grid/grid/grid_util.h"
      38              : #include "vertex_util.h"
      39              : #include "edge_util.h"
      40              : #include "face_util.h"
      41              : #include "volume_util.h"
      42              : 
      43              : #include <limits>
      44              : 
      45              : namespace ug
      46              : {
      47              : 
      48              : ////////////////////////////////////////////////////////////////////////////////////////////
      49              : template <class TElem>
      50              : UG_API
      51              : typename TElem::side*
      52              : GetSharedSide(Grid& grid, TElem* e1, TElem* e2)
      53              : {
      54              :         if(!TElem::HAS_SIDES)
      55              :                 return NULL;
      56              : 
      57              :         typedef typename TElem::side    side_t;
      58              :         typename Grid::traits<side_t>::secure_container   sides1;
      59              :         typename Grid::traits<side_t>::secure_container   sides2;
      60              : 
      61              :         grid.associated_elements(sides1, e1);
      62              :         grid.associated_elements(sides2, e2);
      63              : 
      64              :         for(size_t i1 = 0; i1 < sides1.size(); ++i1){
      65              :                 for(size_t i2 = 0; i2 < sides2.size(); ++i2){
      66              :                         if(sides1[i1] == sides2[i2])
      67              :                                 return sides1[i1];
      68              :                 }
      69              :         }
      70              : 
      71              :         return NULL;
      72              : }
      73              : 
      74              : 
      75              : ////////////////////////////////////////////////////////////////////////
      76              : //      CalculateGridObjectCenter
      77              : template<class TAAPosVRT>
      78              : UG_API
      79              : inline
      80              : typename TAAPosVRT::ValueType
      81              : CalculateGridObjectCenter(const GridObject* o, TAAPosVRT& aaPosVRT)
      82              : {
      83              :         switch(o->base_object_id()){
      84              :                 case VERTEX:    return CalculateCenter(static_cast<const Vertex*>(o), aaPosVRT);
      85              :                 case EDGE:              return CalculateCenter(static_cast<const Edge*>(o), aaPosVRT);
      86              :                 case FACE:              return CalculateCenter(static_cast<const Face*>(o), aaPosVRT);
      87              :                 case VOLUME:    return CalculateCenter(static_cast<const Volume*>(o), aaPosVRT);
      88              :                 default:
      89              :                         UG_THROW("Unknown geometric-object type.");
      90              :         }
      91              : }
      92              : 
      93              : template<class TAAPosVRT, class TAAWeightVRT>
      94              : UG_API
      95              : inline
      96              : typename TAAPosVRT::ValueType
      97              : CalculateGridObjectCenter(const GridObject* o, TAAPosVRT& aaPosVRT,
      98              :                                                            TAAWeightVRT& aaWeight)
      99              : {
     100              :         switch(o->base_object_id()){
     101              :                 case VERTEX:
     102              :                         return CalculateCenter(static_cast<const Vertex*>(o), aaPosVRT, aaWeight);
     103              :                 case EDGE:
     104              :                         return CalculateCenter(static_cast<const Edge*>(o), aaPosVRT, aaWeight);
     105              :                 case FACE:
     106              :                         return CalculateCenter(static_cast<const Face*>(o), aaPosVRT, aaWeight);
     107              :                 case VOLUME:
     108              :                         return CalculateCenter(static_cast<const Volume*>(o), aaPosVRT, aaWeight);
     109              :                 default:
     110              :                         UG_THROW("Unknown geometric-object type.");
     111              :         }
     112              : }
     113              : 
     114              : 
     115              : ////////////////////////////////////////////////////////////////////////
     116              : //      CalculateCenter
     117              : template <class TIterator, class TAAPosVRT>
     118              : typename TAAPosVRT::ValueType
     119            0 : CalculateCenter(TIterator begin, TIterator end, TAAPosVRT& aaPos)
     120              : {
     121              :         int counter = 0;
     122              :         typename TAAPosVRT::ValueType center;
     123              :         VecSet(center, 0);
     124            0 :         for(TIterator iter = begin; iter != end; ++iter, ++counter)
     125            0 :                 VecAdd(center, center, CalculateCenter(*iter, aaPos));
     126              :                 
     127            0 :         if(counter > 0)
     128            0 :                 VecScale(center, center, 1./(number)counter);
     129              :                 
     130            0 :         return center;
     131              : }
     132              : 
     133              : ////////////////////////////////////////////////////////////////////////
     134              : //      FindClosestByCoordinate
     135              : template<class TElem, class TVertexPositionAttachmentAccessor>
     136            0 : TElem* FindClosestByCoordinate(const typename TVertexPositionAttachmentAccessor::ValueType& coord,
     137              :                                                 typename geometry_traits<TElem>::iterator iterBegin,
     138              :                                                 typename geometry_traits<TElem>::iterator iterEnd,
     139              :                                                 TVertexPositionAttachmentAccessor& aaPosVRT)
     140              : {
     141            0 :         if(iterBegin == iterEnd)
     142              :                 return NULL;
     143              : 
     144              :         typename geometry_traits<TElem>::iterator iter = iterBegin;
     145              :         TElem* bestElem = *iter;
     146            0 :         number bestDistSq = VecDistanceSq(coord, CalculateCenter(bestElem, aaPosVRT));
     147              :         iter++;
     148              : 
     149            0 :         while(iter != iterEnd)
     150              :         {
     151            0 :                 number distSq = VecDistanceSq(coord, CalculateCenter(*iter, aaPosVRT));
     152            0 :                 if(distSq < bestDistSq)
     153              :                 {
     154              :                         bestDistSq = distSq;
     155              :                         bestElem = *iter;
     156              :                 }
     157              : 
     158              :                 ++iter;
     159              :         }
     160              : 
     161              :         return bestElem;
     162              : }
     163              : 
     164              : ////////////////////////////////////////////////////////////////////////
     165              : template<class vector_t, class TIterator, class TAAPos>
     166              : void CalculateBoundingBox(vector_t& vMinOut, vector_t& vMaxOut,
     167              :                                                   TIterator begin, TIterator end,
     168              :                                                   TAAPos& aaPos)
     169              : {
     170              :         if(begin == end){
     171              :                 VecSet(vMinOut, 0);
     172              :                 VecSet(vMaxOut, 0);
     173              :                 return;
     174              :         }
     175              : 
     176              :         vMinOut = vMaxOut = aaPos[GetVertex(*begin, 0)];
     177              : 
     178              :         const int dim = vector_t::Size;
     179              : 
     180              : //      iterate over all elements and find min and max values
     181              :         vector_t tmin, tmax;
     182              :         for(TIterator iter = begin; iter != end; ++iter){
     183              :                 typename TIterator::value_type elem = *iter;
     184              : 
     185              :                 for(size_t i_vrt = 0; i_vrt < NumVertices(elem); ++i_vrt){
     186              :                         for(int i = 0; i < dim; ++i){
     187              :                                 vector_t& v = aaPos[GetVertex(elem, i_vrt)];
     188              :                                 if(v[i] < vMinOut[i])
     189              :                                         vMinOut[i] = v[i];
     190              :                                 else if(v[i] > vMaxOut[i])
     191              :                                         vMaxOut[i] = v[i];
     192              :                         }
     193              :                 }
     194              :         }
     195              : }
     196              : 
     197              : ////////////////////////////////////////////////////////////////////////
     198              : //      NumSharedVertices
     199              : template <class TElemPtr1, class TElemPtr2>
     200              : size_t NumSharedVertices(Grid& grid, TElemPtr1 elem1, TElemPtr2 elem2)
     201              : {
     202              :         grid.begin_marking();
     203              : //      first mark all vertices of elem1
     204              :         for(size_t i = 0; i < elem1->num_vertices(); ++i)
     205              :                 grid.mark(elem1->vertex(i));
     206              : 
     207              : //      now count how many of vertex 2 are marked.
     208              :         size_t counter = 0;
     209              :         for(size_t i = 0; i < elem2->num_vertices(); ++i){
     210              :                 if(grid.is_marked(elem2->vertex(i)))
     211              :                         ++counter;
     212              :         }
     213              :         
     214              :         grid.end_marking();
     215              :         
     216              :         return counter;
     217              : }
     218              : 
     219              : ////////////////////////////////////////////////////////////////////////
     220              : //      EraseElements
     221              : template <class TElem>
     222            0 : void EraseElements(Grid& grid, typename geometry_traits<TElem>::iterator iterBegin,
     223              :                                                 typename geometry_traits<TElem>::iterator iterEnd)
     224              : {
     225              : //      be careful to not invalidate the iterators.
     226            0 :         while(iterBegin != iterEnd)
     227              :         {
     228              :                 TElem* e = *iterBegin;
     229              :                 iterBegin++;
     230            0 :                 grid.erase(e);
     231              :         }
     232            0 : }
     233              : 
     234              : ////////////////////////////////////////////////////////////////////////
     235              : //      AssignIndices
     236              : template <class TElem>
     237              : void AssignIndices(typename geometry_traits<TElem>::iterator iterBegin,
     238              :                                         typename geometry_traits<TElem>::iterator iterEnd,
     239              :                                         Grid::AttachmentAccessor<TElem, AInt>& aaInt)
     240              : {
     241              :         int index = 0;
     242            0 :         while(iterBegin != iterEnd)
     243              :         {
     244            0 :                 aaInt[*iterBegin] = index++;
     245              :                 iterBegin++;
     246              :         }
     247              : }
     248              : 
     249              : ////////////////////////////////////////////////////////////////////////
     250              : //      ElementDiameter
     251              : template <class TElem, class TAAPos>
     252            0 : number ElementDiameterSq(Grid& grid,
     253              :                          TAAPos& aaPos,
     254              :                                              TElem* elem)
     255              : {
     256              :         PointerConstArray<Vertex*> vVert;
     257              :         grid.associated_elements(vVert, elem);
     258              : 
     259            0 :         number max = 0.0;
     260            0 :         for(size_t i = 0; i < vVert.size(); ++i)
     261            0 :                 for(size_t j = i+1; j < vVert.size(); ++j)
     262            0 :                         max = std::max(max, VecDistanceSq(aaPos[vVert[i]], aaPos[vVert[j]]));
     263              : 
     264            0 :         return max;
     265              : }
     266              : 
     267              : template <class TAAPos>
     268              : number ElementDiameterSq(Grid& grid,
     269              :                                                  TAAPos& aaPos,
     270              :                                                  GridObject* elem)
     271              : {
     272              :         switch(elem->base_object_id()){
     273              :                 case VERTEX: return ElementDiameterSq(grid, aaPos, static_cast<Vertex*>(elem));
     274              :                 case EDGE: return ElementDiameterSq(grid, aaPos, static_cast<Edge*>(elem));
     275              :                 case FACE: return ElementDiameterSq(grid, aaPos, static_cast<Face*>(elem));
     276              :                 case VOLUME: return ElementDiameterSq(grid, aaPos, static_cast<Volume*>(elem));
     277              :                 default: UG_THROW("ElementDiameterSq: Element type not found.")
     278              :         }
     279              : }
     280              : 
     281              : template <class TElem, class TAAPos>
     282              : number ElementDiameter(Grid& grid,
     283              :                        TAAPos& aaPos,
     284              :                                            TElem* elem)
     285              : {
     286            0 :         return std::sqrt(ElementDiameterSq(grid, aaPos, elem));
     287              : }
     288              : 
     289              : template <class TAAPos, class TIterator>
     290            0 : number MaxElementDiameter(Grid& grid, TAAPos& aaPos,
     291              :                           TIterator iter, TIterator iterEnd)
     292              : {
     293            0 :         number max = 0.0;
     294            0 :         for(; iter != iterEnd; ++iter)
     295            0 :                 max = std::max(max, ElementDiameterSq(grid, aaPos, *iter));
     296              : 
     297              : #ifdef UG_PARALLEL
     298              :         // share value between all procs
     299              :         pcl::ProcessCommunicator com;
     300              :         max = com.allreduce(max, PCL_RO_MAX);
     301              : #endif
     302              : 
     303            0 :         return std::sqrt(max);
     304              : }
     305              : 
     306              : template <class TAAPos, class TIterator>
     307            0 : number MinElementDiameter(Grid& grid, TAAPos& aaPos,
     308              :                           TIterator iter, TIterator iterEnd)
     309              : {
     310            0 :         number min = std::numeric_limits<number>::max();
     311            0 :         for(; iter != iterEnd; ++iter)
     312            0 :                 min = std::min(min, ElementDiameterSq(grid, aaPos, *iter));
     313              : 
     314              : #ifdef UG_PARALLEL
     315              :         // share value between all procs
     316              :         pcl::ProcessCommunicator com;
     317              :         min = com.allreduce(min, PCL_RO_MIN);
     318              : #endif
     319              : 
     320            0 :         return std::sqrt(min);
     321              : }
     322              : 
     323              : 
     324              : template <class TElem1, class TElem2, class TAAPos>
     325              : typename TAAPos::ValueType
     326              : GetDirection (TElem1* e1, TElem2* e2, const TAAPos& aaPos)
     327              : {
     328              :         typedef typename TAAPos::ValueType vector_t;
     329              : 
     330              :         vector_t c1 = CalculateCenter (e1, aaPos);
     331              :         vector_t c2 = CalculateCenter (e2, aaPos);
     332              : 
     333              :         c2 -= c1;
     334              :         return c2;
     335              : }
     336              : 
     337              : template <class TElem1, class TElem2, class TAAPos>
     338              : bool CheckDirection (TElem1* e1,
     339              :                      TElem2* e2,
     340              :                      const TAAPos& aaPos,
     341              :                      const typename TAAPos::ValueType& dir,
     342              :                      number minAngle,
     343              :                      number maxAngle)
     344              : {
     345              :         typedef typename TAAPos::ValueType vector_t;
     346              : 
     347              :         const vector_t v = GetDirection (e1, e2, aaPos);
     348              :         const number angle = rad_to_deg(VecAngle(v, dir));
     349              :         return (minAngle <= angle) && (maxAngle >= angle);
     350              : }
     351              : 
     352              : }//     end of namespace
     353              : 
     354              : #endif
        

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