lerp.h 3.66 KB
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/*******************************************************************************
* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
* version 0.1                                                                  *
* Copyright (C) 2009-2012, IGG Team, LSIIT, University of Strasbourg           *
*                                                                              *
* 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.           *
*                                                                              *
* Web site: http://cgogn.unistra.fr/                                           *
* Contact information: cgogn@unistra.fr                                        *
*                                                                              *
*******************************************************************************/

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#ifndef __MR_LERP_FILTER__
#define __MR_LERP_FILTER__
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#include <cmath>
#include "Algo/Multiresolution/filter.h"
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namespace CGoGN
{

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namespace Algo
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{
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namespace MR
{

namespace Primal
{

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namespace Filters
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{

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/*********************************************************************************
 *                           SYNTHESIS FILTERS
 *********************************************************************************/
template <typename PFP>
class LerpEdgeSynthesisFilter : public Filter
{
protected:
	typename PFP::MAP& m_map ;
	VertexAttribute<typename PFP::VEC3>& m_position ;
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public:
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	LerpEdgeSynthesisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
	{}
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	void operator() ()
	{
		TraversorE<typename PFP::MAP> trav(m_map) ;
		for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
		{
			typename PFP::VEC3 p = (m_position[d] + m_position[m_map.phi1(d)]) * typename PFP::REAL(0.5);
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			m_map.incCurrentLevel() ;
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			Dart midV = m_map.phi1(d) ;
			m_position[midV] = p ;
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			m_map.decCurrentLevel() ;
		}
	}
} ;
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template <typename PFP>
class LerpFaceSynthesisFilter : public Filter
{
protected:
	typename PFP::MAP& m_map ;
	VertexAttribute<typename PFP::VEC3>& m_position ;
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public:
	LerpFaceSynthesisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
	{}

	void operator() ()
	{
		TraversorF<typename PFP::MAP> trav(m_map) ;
		for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
		{
			typename PFP::VEC3 p = Algo::Geometry::faceCentroid<PFP>(m_map, d, m_position);

			m_map.incCurrentLevel() ;
			if(m_map.faceDegree(d) != 3)
			{
				Dart midF = m_map.phi1(m_map.phi1(d));
				m_position[midF] = p ;
			}
			m_map.decCurrentLevel() ;

		}
	}
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} ;

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} // namespace Filters
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} // namespace Primal

} // namespace MR

} // namespace Algo

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} // namespace CGoGN

#endif
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