48289493f3
- added the set_error_tolerance_factor function to BaseDecimaterT, which calls set_error_tolerance_factor for all loaded Mods - implemented a decimate_constraints_only function for the McDecimater (and adjusted the MixedDecimater accordingly) - implemented stop criterions for the McDecimater - added some OpenMP loops for the sample generation to the McDecimater git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@685 fdac6126-5c0c-442c-9429-916003d36597
139 lines
6.0 KiB
C++
139 lines
6.0 KiB
C++
/*===========================================================================*\
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* *
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* OpenMesh *
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* Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen *
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* www.openmesh.org *
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* *
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*---------------------------------------------------------------------------*
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* This file is part of OpenMesh. *
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* *
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* OpenMesh is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 3 of *
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* the License, or (at your option) any later version with the *
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* following exceptions: *
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* *
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* If other files instantiate templates or use macros *
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* or inline functions from this file, or you compile this file and *
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* link it with other files to produce an executable, this file does *
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* not by itself cause the resulting executable to be covered by the *
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* GNU Lesser General Public License. This exception does not however *
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* invalidate any other reasons why the executable file might be *
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* covered by the GNU Lesser General Public License. *
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* *
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* OpenMesh is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU LesserGeneral Public *
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* License along with OpenMesh. If not, *
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* see <http://www.gnu.org/licenses/>. *
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* *
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\*===========================================================================*/
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/*===========================================================================*\
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* *
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* $Revision: 460 $ *
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* $Date: 2011-11-16 10:45:08 +0100 (Mi, 16 Nov 2011) $ *
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* *
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\*===========================================================================*/
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/** \file MixedDecimaterT.cc
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*/
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//=============================================================================
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//
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// CLASS MixedDecimaterT - IMPLEMENTATION
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//
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//=============================================================================
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#define OPENMESH_MIXED_DECIMATER_DECIMATERT_CC
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//== INCLUDES =================================================================
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#include <OpenMesh/Tools/Decimater/MixedDecimaterT.hh>
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#include <vector>
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#if defined(OM_CC_MIPS)
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# include <float.h>
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#else
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# include <cfloat>
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#endif
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//== NAMESPACE ===============================================================
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namespace OpenMesh {
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namespace Decimater {
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//== IMPLEMENTATION ==========================================================
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template<class Mesh>
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MixedDecimaterT<Mesh>::MixedDecimaterT(Mesh& _mesh) :
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BaseDecimaterT<Mesh>(_mesh),McDecimaterT<Mesh>(_mesh), DecimaterT<Mesh>(_mesh) {
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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MixedDecimaterT<Mesh>::~MixedDecimaterT() {
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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size_t MixedDecimaterT<Mesh>::decimate(const size_t _n_collapses, const float _mc_factor) {
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if (_mc_factor > 1.0)
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return 0;
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size_t n_collapses_mc = static_cast<size_t>(_mc_factor*_n_collapses);
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size_t n_collapses_inc = static_cast<size_t>(_n_collapses - n_collapses_mc);
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size_t r_collapses = 0;
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if (_mc_factor > 0.0)
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r_collapses = McDecimaterT<Mesh>::decimate(n_collapses_mc);
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if (_mc_factor < 1.0)
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r_collapses += DecimaterT<Mesh>::decimate(n_collapses_inc);
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return r_collapses;
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}
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template<class Mesh>
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size_t MixedDecimaterT<Mesh>::decimate_to_faces(const size_t _n_vertices,const size_t _n_faces, const float _mc_factor ){
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if (_mc_factor > 1.0)
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return 0;
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std::size_t r_collapses = 0;
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if (_mc_factor > 0.0)
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{
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bool constraintsOnly = (_n_vertices == 0) && (_n_faces == 1);
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if (!constraintsOnly) {
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size_t mesh_faces = this->mesh().n_faces();
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size_t mesh_vertices = this->mesh().n_vertices();
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//reduce the mesh only for _mc_factor
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size_t n_vertices_mc = static_cast<size_t>(mesh_vertices - _mc_factor * (mesh_vertices - _n_vertices));
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size_t n_faces_mc = static_cast<size_t>(mesh_faces - _mc_factor * (mesh_faces - _n_faces));
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r_collapses = McDecimaterT<Mesh>::decimate_to_faces(n_vertices_mc, n_faces_mc);
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} else {
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r_collapses = McDecimaterT<Mesh>::decimate_constraints_only(_mc_factor);
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}
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}
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//update the mesh::n_vertices function, otherwise the next Decimater function will delete to much
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this->mesh().garbage_collection();
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//reduce the rest of the mesh
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if (_mc_factor < 1.0)
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r_collapses += DecimaterT<Mesh>::decimate_to_faces(_n_vertices,_n_faces);
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return r_collapses;
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}
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//=============================================================================
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}// END_NS_MC_DECIMATER
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} // END_NS_OPENMESH
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//=============================================================================
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