matrixSetup.h 4.42 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) 2009-2011, 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.u-strasbg.fr/                                         *
Pierre Kraemer's avatar
Pierre Kraemer committed
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94
* Contact information: cgogn@unistra.fr                                        *
*                                                                              *
*******************************************************************************/

#ifndef __LINEAR_SOLVING_CONSTRAINTS__
#define __LINEAR_SOLVING_CONSTRAINTS__

#include "Algo/LinearSolving/Laplacian/matrixSetup.h"

namespace CGoGN
{

namespace LinearSolving
{

template<typename PFP, typename ATTR_TYPE, class SOLVER_TRAITS>
class EqualityConstraint_Scalar : public FunctorMap<typename PFP::MAP>
{
protected:
	LinearSolver<SOLVER_TRAITS>* solver ;
	const AttributeHandler<ATTR_TYPE>& attrTable ;
	const AttributeHandler<unsigned int>& indexTable ;
	float weight ;

public:
	typedef typename PFP::MAP MAP ;
	

	EqualityConstraint_Scalar(MAP& m, LinearSolver<SOLVER_TRAITS>* s, const AttributeHandler<ATTR_TYPE>& attr, const AttributeHandler<unsigned int> index, float w) :
		FunctorMap<MAP>(m), solver(s), attrTable(attr), indexTable(index), weight(w)
	{}
	bool operator()(Dart d)
	{
		this->solver->begin_row() ;
		solver->add_coefficient(indexTable[d], 1.0f) ;
		solver->set_right_hand_side(attrTable[d]) ;
		solver->normalize_row(weight) ;
		solver->end_row() ;
		return false ;
	}
} ;

template<typename PFP, typename ATTR_TYPE, class SOLVER_TRAITS>
class EqualityConstraint_Vector : public FunctorMap<typename PFP::MAP>
{
protected:
	LinearSolver<SOLVER_TRAITS>* solver ;
	const AttributeHandler<ATTR_TYPE>& attrTable ;
	const AttributeHandler<unsigned int>& indexTable ;
	unsigned int coord ;
	float weight ;

public:
	typedef typename PFP::MAP MAP ;
	

	EqualityConstraint_Vector(MAP& m, LinearSolver<SOLVER_TRAITS>* s, const AttributeHandler<ATTR_TYPE>& attr, int c, const AttributeHandler<unsigned int> index, float w) :
		FunctorMap<MAP>(m), solver(s), attrTable(attr), indexTable(index), coord(c), weight(w)
	{}
	bool operator()(Dart d)
	{
		this->solver->begin_row() ;
		solver->add_coefficient(indexTable[d], 1.0f) ;
		solver->set_right_hand_side((attrTable[d])[coord]) ;
		solver->normalize_row(weight) ;
		solver->end_row() ;
		return false ;
	}
} ;

template <typename PFP, typename ATTR_TYPE, class SOLVER_TRAITS>
void setupEqualityMatrix(typename PFP::MAP& m, LinearSolver<SOLVER_TRAITS>* s, const AttributeHandler<ATTR_TYPE>& attr, const AttributeHandler<unsigned int> index, float amount)
{
	EqualityConstraint_Scalar<PFP, ATTR_TYPE, SOLVER_TRAITS> ec(m, s, attr, index, amount) ;
95
	m.foreach_orbit(VERTEX, ec) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
96 97 98 99 100 101
}

template <typename PFP, typename ATTR_TYPE, class SOLVER_TRAITS>
void setupEqualityMatrix(typename PFP::MAP& m, LinearSolver<SOLVER_TRAITS>* s, const AttributeHandler<ATTR_TYPE>& attr, unsigned int coord, const AttributeHandler<unsigned int> index, float amount)
{
	EqualityConstraint_Vector<PFP, ATTR_TYPE, SOLVER_TRAITS> ec(m, s, attr, coord, index, amount) ;
102
	m.foreach_orbit(VERTEX, ec) ;
Pierre Kraemer's avatar
Pierre Kraemer committed
103 104 105 106 107 108 109
}

}

}

#endif