/usr/include/InsightToolkit/Review/itkQuadEdgeMeshDiscretePrincipalCurvaturesEstimator.h is in libinsighttoolkit3-dev 3.20.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 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 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkQuadEdgeMeshDiscretePrincipalCurvaturesEstimator.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkQuadEdgeMeshDiscretePrincipalCurvaturesEstimator_h
#define __itkQuadEdgeMeshDiscretePrincipalCurvaturesEstimator_h
#include "itkQuadEdgeMeshDiscreteCurvatureEstimator.h"
#include "itkQuadEdgeMeshParamMatrixCoefficients.h"
namespace itk
{
/**
* \class QuadEdgeMeshDiscretePrincipalCurvaturesEstimator
*
* \brief FIXME add documentation here
*
*/
template< class TInputMesh, class TOutputMesh >
class QuadEdgeMeshDiscretePrincipalCurvaturesEstimator :
public QuadEdgeMeshDiscreteCurvatureEstimator< TInputMesh, TOutputMesh >
{
public:
typedef QuadEdgeMeshDiscretePrincipalCurvaturesEstimator Self;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
typedef QuadEdgeMeshDiscreteCurvatureEstimator<
TInputMesh, TOutputMesh > Superclass;
typedef typename Superclass::InputMeshType InputMeshType;
typedef typename Superclass::InputMeshPointer InputMeshPointer;
typedef typename Superclass::OutputMeshType OutputMeshType;
typedef typename Superclass::OutputMeshPointer OutputMeshPointer;
typedef typename Superclass::OutputPointsContainerPointer OutputPointsContainerPointer;
typedef typename Superclass::OutputPointsContainerIterator OutputPointsContainerIterator;
typedef typename Superclass::OutputPointType OutputPointType;
typedef typename Superclass::OutputVectorType OutputVectorType;
typedef typename Superclass::OutputCoordType OutputCoordType;
typedef typename Superclass::OutputPointIdentifier OutputPointIdentifier;
typedef typename Superclass::OutputCellIdentifier OutputCellIdentifier;
typedef typename Superclass::OutputQEType OutputQEType;
typedef typename Superclass::OutputMeshTraits OutputMeshTraits;
typedef typename Superclass::OutputCurvatureType OutputCurvatureType;
typedef typename Superclass::TriangleType TriangleType;
/** Run-time type information (and related methods). */
itkTypeMacro( QuadEdgeMeshDiscretePrincipalCurvaturesEstimator, QuadEdgeMeshDiscreteCurvatureEstimator );
typedef ConformalMatrixCoefficients< OutputMeshType > CoefficientType;
protected:
QuadEdgeMeshDiscretePrincipalCurvaturesEstimator() :
m_Gaussian( 0.0 ), m_Mean( 0.0 ){}
~QuadEdgeMeshDiscretePrincipalCurvaturesEstimator() {}
OutputCurvatureType m_Gaussian;
OutputCurvatureType m_Mean;
void ComputeMeanAndGaussianCurvatures( const OutputPointType& iP )
{
OutputMeshPointer output = this->GetOutput();
OutputQEType* qe = iP.GetEdge( );
m_Mean = 0.;
m_Gaussian = 0.;
if( qe != 0 )
{
OutputVectorType Laplace;
Laplace.Fill( 0. );
OutputQEType* qe_it = qe;
OutputCurvatureType area( 0. ), sum_theta( 0. );
if( qe_it != qe_it->GetOnext() )
{
qe_it = qe;
OutputQEType* qe_it2;
OutputPointType q0, q1;
OutputVectorType face_normal;
OutputVectorType normal;
normal.Fill( 0. );
OutputCurvatureType temp_area;
OutputCoordType temp_coeff;
CoefficientType coefficent;
do
{
qe_it2 = qe_it->GetOnext();
q0 = output->GetPoint( qe_it->GetDestination() );
q1 = output->GetPoint( qe_it2->GetDestination() );
temp_coeff = coefficent( output, qe_it );
Laplace += temp_coeff * ( iP - q0 );
// Compute Angle;
sum_theta += static_cast< OutputCurvatureType >(
TriangleType::ComputeAngle( q0, iP, q1 ) );
temp_area = ComputeMixedArea( qe_it, qe_it2 );
area += temp_area;
face_normal = TriangleType::ComputeNormal( q0, iP, q1 );
normal += face_normal;
qe_it = qe_it2;
} while( qe_it != qe );
if( area > 1e-10 )
{
area = 1. / area;
Laplace *= 0.25 * area;
m_Mean = Laplace * normal;
m_Gaussian = ( 2. * vnl_math::pi - sum_theta ) * area;
}
}
}
}
virtual OutputCurvatureType ComputeDelta( )
{
return vnl_math_max( 0., m_Mean * m_Mean - m_Gaussian );
}
private:
QuadEdgeMeshDiscretePrincipalCurvaturesEstimator( const Self& ); // purposely not implemented
void operator = ( const Self& ); // purposely not implemented
};
}
#endif
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