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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkTriangleHelperTest.cxx
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.
=========================================================================*/
#include <itkPoint.h>
#include <itkTriangleHelper.h>
#include <iostream>
int itkTriangleHelperTest( int argc, char* argv[] )
{
(void) argc;
(void) argv;
const unsigned int Dimension = 3;
typedef double CoordRepType;
typedef itk::Point< CoordRepType, Dimension > PointType;
typedef PointType::VectorType VectorType;
typedef itk::TriangleHelper< PointType > TriangleHelperType;
PointType Org;
Org.Fill( 0. );
PointType a;
a[0] = 1.;
a[1] = 0.;
a[2] = 0.;
PointType b;
b[0] = 0.5;
b[1] = 0.5;
b[2] = 0.;
PointType c;
c[0] = -0.5;
c[1] = 0.5;
c[2] = 0.;
if( TriangleHelperType::IsObtuse( a, Org, b ) )
{
std::cout <<"This triangle was supposed to be non-obtuse" <<std::endl;
std::cout <<a <<" * " <<Org <<" * " <<b <<std::endl;
return EXIT_FAILURE;
}
if( !TriangleHelperType::IsObtuse( a, Org, c ) )
{
std::cout <<"This triangle was supposed to be obtuse" <<std::endl;
std::cout <<a <<" * " <<Org <<" * " <<c <<std::endl;
return EXIT_FAILURE;
}
if( TriangleHelperType::IsObtuse( a, Org, a ) )
{
std::cout <<"Dummy test" <<std::endl;
std::cout <<a <<" * " <<Org <<" * " <<a <<std::endl;
return EXIT_FAILURE;
}
VectorType n;
n[0] = 0.;
n[1] = 0.;
n[2] = -1.;
if( ( n - TriangleHelperType::ComputeNormal( a, Org, b ) ).GetNorm() > 1e-6 )
{
std::cout <<"Difference between normals is too large" <<std::endl;
return EXIT_FAILURE;
}
if( ( TriangleHelperType::ComputeNormal( a, Org, a ) ).GetNorm() > 1e-6 )
{
std::cout <<"Difference between normals is too large" <<std::endl;
return EXIT_FAILURE;
}
if( vnl_math_abs( TriangleHelperType::Cotangent( a, Org, b ) - 1. ) > 1e-6 )
{
return EXIT_FAILURE;
}
std::cout <<TriangleHelperType::Cotangent( a, Org, a ) <<std::endl;
std::cout <<TriangleHelperType::ComputeBarycenter( 1., a, 2., Org, 3., b )
<<std::endl;
PointType barycenter =
TriangleHelperType::ComputeBarycenter( 0., a, 1., Org, -1., b );
if( ( barycenter.GetVectorFromOrigin() ).GetNorm() > 1e-6 )
{
std::cout
<<"TriangleHelperType::ComputeBarycenter( 0.,a,1.,Org,-1.,b) FAILED"
<<std::endl;
return EXIT_FAILURE;
}
if( vnl_math_abs( TriangleHelperType::ComputeAngle( a, Org, b )
- 0.25 * vnl_math::pi ) > 1e-6 )
{
std::cout <<"TriangleHelperType::ComputeAngle( a, Org, b ) FAILED"
<<std::endl;
return EXIT_FAILURE;
}
std::cout <<TriangleHelperType::ComputeGravityCenter( a, Org, b )
<<std::endl;
PointType Circum;
Circum[0] = 0.5;
Circum[1] = 0.;
Circum[2] = 0.;
barycenter = TriangleHelperType::ComputeCircumCenter( a, Org, b );
if( barycenter.SquaredEuclideanDistanceTo( Circum ) > 1e-6 )
{
std::cout <<"TriangleHelperType::ComputeCircumCenter( a, Org, b ) FAILED"
<<std::endl;
return EXIT_FAILURE;
}
barycenter = TriangleHelperType::ComputeConstrainedCircumCenter( a, Org, b );
if( barycenter.SquaredEuclideanDistanceTo( Circum ) > 1e-6 )
{
std::cout <<"TriangleHelperType::ComputeConstrainedCircumCenter(a,Org,b)"
<<" FAILED" <<std::endl;
return EXIT_FAILURE;
}
CoordRepType area = TriangleHelperType::ComputeArea( a, Org, b );
if( vnl_math_abs( area - 0.25 ) > 1e-6 )
{
std::cout <<"TriangleHelperType::ComputeArea( a, Org, b ) FAILED"
<<std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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