volume.hpp 6.08 KB
Newer Older
Pierre Kraemer's avatar
Pierre Kraemer committed
1 2 3
/*******************************************************************************
 * CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
 * version 0.1                                                                  *
4
 * Copyright (C) 2009-2012, IGG Team, LSIIT, University of Strasbourg           *
Pierre Kraemer's avatar
Pierre Kraemer committed
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
 *                                                                              *
 * This library is free software; you can redistribute it and/or modify it      *
 * under the terms of the GNU Lesser General Public License as published by the *
 * Free Software Foundation; either version 2.1 of the License, or (at your     *
 * option) any later version.                                                   *
 *                                                                              *
 * This library is distributed in the hope that it will be useful, but WITHOUT  *
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License  *
 * for more details.                                                            *
 *                                                                              *
 * You should have received a copy of the GNU Lesser General Public License     *
 * along with this library; if not, write to the Free Software Foundation,      *
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
 *                                                                              *
20
 * Web site: http://cgogn.unistra.fr/                                           *
Pierre Kraemer's avatar
Pierre Kraemer committed
21 22 23 24
 * Contact information: cgogn@unistra.fr                                        *
 *                                                                              *
 *******************************************************************************/

25
#include "Topology/generic/traversorCell.h"
Pierre Kraemer's avatar
Pierre Kraemer committed
26
#include "Algo/Geometry/centroid.h"
Thomas's avatar
Thomas committed
27
#include "Algo/Modelisation/tetrahedralization.h"
Pierre Kraemer's avatar
Pierre Kraemer committed
28 29 30 31 32 33 34 35 36 37 38

namespace CGoGN
{

namespace Algo
{

namespace Geometry
{

template <typename PFP>
39
typename PFP::REAL tetrahedronSignedVolume(typename PFP::MAP& map, Dart d, const VertexAttribute<typename PFP::VEC3>& position)
Pierre Kraemer's avatar
Pierre Kraemer committed
40 41 42 43 44 45 46 47 48 49
{
	typename PFP::VEC3 p1 = position[d] ;
	typename PFP::VEC3 p2 = position[map.phi1(d)] ;
	typename PFP::VEC3 p3 = position[map.phi_1(d)] ;
	typename PFP::VEC3 p4 = position[map.phi_1(map.phi2(d))] ;

	return Geom::tetraSignedVolume(p1, p2, p3, p4) ;
}

template <typename PFP>
50
typename PFP::REAL tetrahedronVolume(typename PFP::MAP& map, Dart d, const VertexAttribute<typename PFP::VEC3>& position)
Pierre Kraemer's avatar
Pierre Kraemer committed
51 52 53 54 55 56 57 58 59 60
{
	typename PFP::VEC3 p1 = position[d] ;
	typename PFP::VEC3 p2 = position[map.phi1(d)] ;
	typename PFP::VEC3 p3 = position[map.phi_1(d)] ;
	typename PFP::VEC3 p4 = position[map.phi_1(map.phi2(d))] ;

	return Geom::tetraVolume(p1, p2, p3, p4) ;
}

template <typename PFP>
61
typename PFP::REAL convexPolyhedronVolume(typename PFP::MAP& map, Dart d, const VertexAttribute<typename PFP::VEC3>& position, unsigned int thread)
Pierre Kraemer's avatar
Pierre Kraemer committed
62 63 64
{
	typedef typename PFP::VEC3 VEC3;

65
	if(Modelisation::Tetrahedralization::isTetrahedron<PFP>(map,d,thread))
Pierre Kraemer's avatar
Pierre Kraemer committed
66 67 68 69
		return tetrahedronVolume<PFP>(map,d,position) ;
	else
	{
		typename PFP::REAL vol = 0 ;
70
		VEC3 vCentroid = Algo::Geometry::volumeCentroid<PFP>(map, d, position, thread) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
71

72
		DartMarkerStore mark(map,thread);		// Lock a marker
Pierre Kraemer's avatar
Pierre Kraemer committed
73 74 75 76

		std::vector<Dart> visitedFaces ;
		visitedFaces.reserve(100) ;
		visitedFaces.push_back(d) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
77
		mark.markOrbit<FACE>(d) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
78 79 80 81

		for(typename std::vector<Dart>::iterator face = visitedFaces.begin(); face != visitedFaces.end(); ++face)
		{
			Dart e = *face ;
82
			if(map.isCycleTriangle(e))
Pierre Kraemer's avatar
Pierre Kraemer committed
83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
			{
				VEC3 p1 = position[e] ;
				VEC3 p2 = position[map.phi1(e)] ;
				VEC3 p3 = position[map.phi_1(e)] ;
				vol += Geom::tetraVolume(p1, p2, p3, vCentroid) ;
			}
			else
			{
				VEC3 fCentroid = Algo::Geometry::faceCentroid<PFP>(map, e, position) ;
				Dart f = e ;
				do
				{
					VEC3 p1 = position[f] ;
					VEC3 p2 = position[map.phi1(f)] ;
					vol += Geom::tetraVolume(p1, p2, fCentroid, vCentroid) ;
					f = map.phi1(f) ;
				} while(f != e) ;
			}
			do	// add all face neighbours to the table
			{
				Dart ee = map.phi2(e) ;
				if(!mark.isMarked(ee)) // not already marked
				{
					visitedFaces.push_back(ee) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
107
					mark.markOrbit<FACE>(e) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
108 109 110 111 112 113 114 115 116 117
				}
				e = map.phi1(e) ;
			} while(e != *face) ;
		}

		return vol ;
	}
}

template <typename PFP>
118
typename PFP::REAL totalVolume(typename PFP::MAP& map, const VertexAttribute<typename PFP::VEC3>& position, const FunctorSelect& select, unsigned int thread)
Pierre Kraemer's avatar
Pierre Kraemer committed
119 120
{
	typename PFP::REAL vol = 0 ;
121
	TraversorW<typename PFP::MAP> t(map, select, thread) ;
122
	for(Dart d = t.begin(); d != t.end(); d = t.next())
123
		vol += convexPolyhedronVolume<PFP>(map, d, position,thread) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
124 125 126
	return vol ;
}

127 128 129 130 131 132 133 134 135 136 137 138 139 140

namespace Parallel
{

template <typename PFP>
class FunctorTotalVolume: public FunctorMapThreaded<typename PFP::MAP >
{
	 const VertexAttribute<typename PFP::VEC3>& m_position;
	 typename PFP::REAL m_vol;
public:
	 FunctorTotalVolume<PFP>( typename PFP::MAP& map, const VertexAttribute<typename PFP::VEC3>& position):
	 	 FunctorMapThreaded<typename PFP::MAP>(map), m_position(position), m_vol(0.0)
	 { }

141
	void run(Dart d, unsigned int threadID)
142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
	{
		m_vol += convexPolyhedronVolume<PFP>(this->m_map, d, m_position,threadID) ;
	}

	typename PFP::REAL getVol() const
	{
		return m_vol;
	}
};



template <typename PFP>
typename PFP::REAL totalVolume(typename PFP::MAP& map, const VertexAttribute<typename PFP::VEC3>& position, const FunctorSelect& select, unsigned int nbth, unsigned int current_thread)
{
	if (nbth==0)
		nbth = Algo::Parallel::optimalNbThreads();


	std::vector<FunctorMapThreaded<typename PFP::MAP>*> functs;
	for (unsigned int i=0; i < nbth; ++i)
	{
		functs.push_back(new FunctorTotalVolume<PFP>(map,position));
	}

	typename PFP::REAL total=0.0;

	Algo::Parallel::foreach_cell<typename PFP::MAP,VOLUME>(map, functs, nbth, true, select, current_thread);

	for (unsigned int i=0; i < nbth; ++i)
	{
		total += reinterpret_cast<FunctorTotalVolume<PFP>*>(functs[i])->getVol();
		delete functs[i];
	}
	return total;
}

}

Pierre Kraemer's avatar
Pierre Kraemer committed
181 182 183 184 185
} // namespace Geometry

} // namespace Algo

} // namespace CGoGN