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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 *
* *
*******************************************************************************/
#ifndef __MR_FILTERS_PRIMAL__
#define __MR_FILTERS_PRIMAL__
#include <cmath>
//#include "Algo/Decimation/decimation.h"
namespace CGoGN
{
namespace Algo
{
namespace MR
{
class Filter
{
public:
Filter() {}
virtual ~Filter() {}
virtual void operator() () = 0 ;
} ;
/*********************************************************************************
* LOOP BASIC FUNCTIONS
*********************************************************************************/
template <typename PFP>
typename PFP::VEC3 loopOddVertex(typename PFP::MAP& map, const VertexAttribute<typename PFP::VEC3>& position, Dart d1)
{
Dart d2 = map.phi2(d1) ;
Dart d3 = map.phi_1(d1) ;
Dart d4 = map.phi_1(d2) ;
typename PFP::VEC3 p1 = position[d1] ;
typename PFP::VEC3 p2 = position[d2] ;
typename PFP::VEC3 p3 = position[d3] ;
typename PFP::VEC3 p4 = position[d4] ;
p1 *= 3.0 / 8.0 ;
p2 *= 3.0 / 8.0 ;
p3 *= 1.0 / 8.0 ;
p4 *= 1.0 / 8.0 ;
return p1 + p2 + p3 + p4 ;
}
template <typename PFP>
typename PFP::VEC3 loopEvenVertex(typename PFP::MAP& map, const VertexAttribute<typename PFP::VEC3>& position, Dart d)
{
map.incCurrentLevel() ;
typename PFP::VEC3 np(0) ;
unsigned int degree = 0 ;
Traversor2VVaE<typename PFP::MAP> trav(map, d) ;
for(Dart it = trav.begin(); it != trav.end(); it = trav.next())
{
++degree ;
np += position[it] ;
}
map.decCurrentLevel() ;
float mu = 3.0/8.0 + 1.0/4.0 * cos(2.0 * M_PI / degree) ;
mu = (5.0/8.0 - (mu * mu)) / degree ;
np *= 8.0/5.0 * mu ;
return np ;
}
/*********************************************************************************
* ANALYSIS FILTERS
*********************************************************************************/
template <typename PFP>
class LoopOddAnalysisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
LoopOddAnalysisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
void operator() ()
{
TraversorE<typename PFP::MAP> trav(m_map) ;
for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
{
typename PFP::VEC3 p = loopOddVertex<PFP>(m_map, m_position, d) ;
m_map.incCurrentLevel() ;
Dart oddV = m_map.phi2(d) ;
m_position[oddV] -= p ;
m_map.decCurrentLevel() ;
}
}
} ;
template <typename PFP>
class LoopEvenAnalysisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position;
public:
LoopEvenAnalysisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
void operator() ()
{
TraversorV<typename PFP::MAP> trav(m_map) ;
for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
{
typename PFP::VEC3 p = loopEvenVertex<PFP>(m_map, m_position, d) ;
m_position[d] -= p ;
}
}
} ;
template <typename PFP>
class LoopNormalisationAnalysisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position;
public:
LoopNormalisationAnalysisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
void operator() ()
{
TraversorV<typename PFP::MAP> trav(m_map) ;
for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
{
unsigned int degree = m_map.vertexDegree(d) ;
float n = 3.0/8.0 + 1.0/4.0 * cos(2.0 * M_PI / degree) ;
n = 8.0/5.0 * (n * n) ;
m_position[d] /= n ;
}
}
} ;
/*********************************************************************************
* SYNTHESIS FILTERS
*********************************************************************************/
template <typename PFP>
class LoopOddSynthesisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position;
public:
LoopOddSynthesisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
void operator() ()
{
TraversorE<typename PFP::MAP> trav(m_map) ;
for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
{
typename PFP::VEC3 p = loopOddVertex<PFP>(m_map, m_position, d) ;
m_map.incCurrentLevel() ;
Dart oddV = m_map.phi2(d) ;
m_position[oddV] += p ;
m_map.decCurrentLevel() ;
}
}
} ;
template <typename PFP>
class LoopEvenSynthesisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
LoopEvenSynthesisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
void operator() ()
{
TraversorV<typename PFP::MAP> trav(m_map) ;
for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
{
typename PFP::VEC3 p = loopEvenVertex<PFP>(m_map, m_position, d) ;
m_position[d] += p ;
}
}
} ;
template <typename PFP>
class LoopNormalisationSynthesisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
LoopNormalisationSynthesisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
void operator() ()
{
TraversorV<typename PFP::MAP> trav(m_map) ;
for (Dart d = trav.begin(); d != trav.end(); d = trav.next())
{
unsigned int degree = m_map.vertexDegree(d) ;
float n = 3.0/8.0 + 1.0/4.0 * cos(2.0 * M_PI / degree) ;
n = 8.0/5.0 * (n * n) ;
m_position[d] *= n ;
}
}
} ;
/*********************************************************************************
* SYNTHESIS FILTERS
*********************************************************************************/
/* Linear Interpolation
*********************************************************************************/
template <typename PFP>
class LerpEdgeSynthesisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
LerpEdgeSynthesisFilter(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
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);
m_map.incCurrentLevel() ;
Dart midV = m_map.phi1(d) ;
m_position[midV] = p ;
m_map.decCurrentLevel() ;
}
}
} ;
template <typename PFP>
class LerpFaceSynthesisFilter : public Filter
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
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() ;
}
}
} ;
/* SQRT(3)
*********************************************************************************/
template <typename PFP>
class Sqrt3OddSynthesisFilter : public Filter
{
protected:
typename PFP::MAP& m_map;
VertexAttribute<typename PFP::VEC3>& m_position;
public:
Sqrt3OddSynthesisFilter(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(0.0);
p += m_position[d];
p += m_position[m_map.phi1(d)];
p += m_position[m_map.phi_1(d)];
p /= 3.0;
m_map.incCurrentLevel() ;
Dart midF = m_map.phi1(d);
m_position[midF] = p ;
m_map.decCurrentLevel() ;
}
}
};
/*********************************************************************************
* SUBDIVISION FUNCTORS
*********************************************************************************/
template <typename PFP>
class PipoVertexVertexFunctor : public FunctorType
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
PipoVertexVertexFunctor(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
bool operator() (Dart d)
{
m_map.decCurrentLevel() ;
typename PFP::VEC3 p = m_position[d] ;
m_map.incCurrentLevel() ;
m_position[d] = p ;
return false ;
}
} ;
template <typename PFP>
class PipoEdgeVertexFunctor : public FunctorType
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
PipoEdgeVertexFunctor(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
bool operator() (Dart d)
{
Dart d1 = m_map.phi2(d) ;
m_map.decCurrentLevel() ;
Dart d2 = m_map.phi2(d1) ;
typename PFP::VEC3 p = (m_position[d1] + m_position[d2]) / 2.0 ;
m_map.incCurrentLevel() ;
m_position[d] = p ;
return false ;
}
} ;
template <typename PFP>
class PipoFaceVertexFunctor : public FunctorType
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
PipoFaceVertexFunctor(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
bool operator() (Dart d)
{
Dart df = m_map.phi1(m_map.phi1(d)) ;
m_map.decCurrentLevel() ;
typename PFP::VEC3 p(0) ;
unsigned int degree = 0 ;
Traversor2FV<typename PFP::MAP> trav(m_map, df) ;
for(Dart it = trav.begin(); it != trav.end(); it = trav.next())
{
++degree ;
p += m_position[it] ;
}
p /= degree ;
m_map.incCurrentLevel() ;
m_position[d] = p ;
return false ;
}
} ;
template <typename PFP>
class LoopVertexVertexFunctor : public FunctorType
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
LoopVertexVertexFunctor(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
bool operator() (Dart d)
{
m_map.decCurrentLevel() ;
typename PFP::VEC3 np(0) ;
unsigned int degree = 0 ;
Traversor2VVaE<typename PFP::MAP> trav(m_map, d) ;
for(Dart it = trav.begin(); it != trav.end(); it = trav.next())
{
++degree ;
np += m_position[it] ;
}
float tmp = 3.0 + 2.0 * cos(2.0 * M_PI / degree) ;
float beta = (5.0 / 8.0) - ( tmp * tmp / 64.0 ) ;
np *= beta / degree ;
typename PFP::VEC3 vp = m_position[d] ;
vp *= 1.0 - beta ;
m_map.incCurrentLevel() ;
m_position[d] = np + vp ;
return false ;
}
} ;
template <typename PFP>
class LoopEdgeVertexFunctor : public FunctorType
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
LoopEdgeVertexFunctor(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
bool operator() (Dart d)
{
Dart d1 = m_map.phi2(d) ;
m_map.decCurrentLevel() ;
Dart d2 = m_map.phi2(d1) ;
Dart d3 = m_map.phi_1(d1) ;
Dart d4 = m_map.phi_1(d2) ;
typename PFP::VEC3 p1 = m_position[d1] ;
typename PFP::VEC3 p2 = m_position[d2] ;
typename PFP::VEC3 p3 = m_position[d3] ;
typename PFP::VEC3 p4 = m_position[d4] ;
p1 *= 3.0 / 8.0 ;
p2 *= 3.0 / 8.0 ;
p3 *= 1.0 / 8.0 ;
p4 *= 1.0 / 8.0 ;
m_map.incCurrentLevel() ;
m_position[d] = p1 + p2 + p3 + p4 ;
return false ;
}
} ;
template <typename PFP>
class CCVertexVertexFunctor : public FunctorType
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
CCVertexVertexFunctor(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
bool operator() (Dart d)
{
m_map.decCurrentLevel() ;
typename PFP::VEC3 np1(0) ;
typename PFP::VEC3 np2(0) ;
unsigned int degree1 = 0 ;
unsigned int degree2 = 0 ;
Dart it = d ;
do
{
++degree1 ;
Dart dd = m_map.phi1(it) ;
np1 += m_position[dd] ;
Dart end = m_map.phi_1(it) ;
dd = m_map.phi1(dd) ;
do
{
++degree2 ;
np2 += m_position[dd] ;
dd = m_map.phi1(dd) ;
} while(dd != end) ;
it = m_map.alpha1(it) ;
} while(it != d) ;
float beta = 3.0 / (2.0 * degree1) ;
float gamma = 1.0 / (4.0 * degree2) ;
np1 *= beta / degree1 ;
np2 *= gamma / degree2 ;
typename PFP::VEC3 vp = m_position[d] ;
vp *= 1.0 - beta - gamma ;
m_map.incCurrentLevel() ;
m_position[d] = np1 + np2 + vp ;
return false ;
}
} ;
template <typename PFP>
class CCEdgeVertexFunctor : public FunctorType
{
protected:
typename PFP::MAP& m_map ;
VertexAttribute<typename PFP::VEC3>& m_position ;
public:
CCEdgeVertexFunctor(typename PFP::MAP& m, VertexAttribute<typename PFP::VEC3>& p) : m_map(m), m_position(p)
{}
bool operator() (Dart d)
{
Dart d1 = m_map.phi2(d) ;
m_map.decCurrentLevel() ;
Dart d2 = m_map.phi2(d1) ;
Dart d3 = m_map.phi_1(d1) ;
Dart d4 = m_map.phi_1(d2) ;
Dart d5 = m_map.phi1(m_map.phi1(d1)) ;