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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkQuadEdgeMesh.h"
#include <iostream>
int itkQuadEdgeMeshIteratorTest( int , char* [] )
{
typedef itk::QuadEdgeMesh< double, 3 > MeshType;
typedef MeshType::QEPrimal::IteratorGeom IteratorGeom;
MeshType::Pointer mesh = MeshType::New( );
//
// p2--------------p1 //
// / \ //
// / \ //
// / \ //
// / \ //
// / \ //
// / \ //
// / \ //
// p3 FACE p0 //
// \ / //
// \ / //
// \ / //
// \ / //
// \ / //
// \ / //
// \ / //
// p4---------------p5 //
//
#define NumPoints 6
#define NumEdges 6
MeshType::PixelType a = std::sqrt( 3.0 ) / 2.0;
MeshType::PixelType points[ NumPoints ][ 3 ] = { { 1.0, 0.0, 0.0 },
{ 0.5, a, 0.0 },
{ -0.5, a, 0.0 },
{ -1.0, 0.0, 0.0 },
{ -0.5, -a, 0.0 },
{ 0.5, -a, 0.0 } };
MeshType::PointType pnts[ NumPoints ];
MeshType::PointIdentifier pids[ NumPoints ];
for( int i = 0; i < NumPoints; i++ )
{
for( int j = 0; j < 3; j++ )
{
pnts[ i ][ j ] = points[ i ][ j ];
}
pids[ i ] = mesh->AddPoint( pnts[ i ] );
}
for( int i = 0; i < NumPoints; i++ )
{
mesh->AddEdge( pids[ i ], pids[ (i + 1 ) % NumPoints ] );
}
MeshType::QEPrimal* foundEdges[ NumEdges ];
for( int i = 0; i < NumPoints; i++ )
{
foundEdges[ i ] = mesh->FindEdge( pids[ i ] ,
pids[ (i + 1 ) % NumEdges ] );
if( ! foundEdges[ i ] )
{
std::cerr << "Unfound edge ["
<< pids[ i ] << ", "
<< pids[ (i + 1 ) % NumEdges ] << "]. Failed."
<< std::endl;
return EXIT_FAILURE;
}
}
// Create the face:
mesh->AddFace( foundEdges[ 0 ] );
// Coarse checking with the cyclicity
if( foundEdges[ 0 ]->IsLnextGivenSizeCyclic( 6 ) == false )
{
std::cerr << "Lnext cyclicity is not 6 as expected."
<< std::endl;
return EXIT_FAILURE;
}
//////////////////////////////////////////////////////////
int edgeNumber = 0;
std::cout << "Testing Lnext iterator... ";
for( IteratorGeom itLnext = foundEdges[ 0 ]->BeginGeomLnext( );
itLnext != foundEdges[ 0 ]->EndGeomLnext( );
itLnext++, edgeNumber++ )
{
MeshType::QEPrimal* expectedEdge = foundEdges[ edgeNumber ];
MeshType::QEPrimal* currentEdge = itLnext.Value( );
if ( currentEdge != expectedEdge )
{
std::cout << std::endl
<< "Erroneous edge: was expecting ["
<< expectedEdge->GetOrigin( )
<< ", "
<< expectedEdge->GetDestination( )
<< "], but got ["
<< currentEdge->GetOrigin( ) << ", "
<< currentEdge->GetDestination( ) << "]. Failed."
<< std::endl;
return EXIT_FAILURE;
}
}
std::cout << "OK" << std::endl;
//////////////////////////////////////////////////////////
edgeNumber = 0;
std::cout << "Testing Rnext iterator... ";
for( IteratorGeom itRnext = foundEdges[ 0 ]->BeginGeomRnext( );
itRnext != foundEdges[ 0 ]->EndGeomRnext( );
itRnext++, edgeNumber++ )
{
// We stat with [0,1] and should get [0,5], [5,4], [4,3]...
MeshType::QEPrimal* expectedEdge = foundEdges[ ( NumEdges - edgeNumber ) % NumEdges ];
MeshType::QEPrimal* currentEdge = itRnext.Value( );
if ( currentEdge != expectedEdge )
{
std::cout << std::endl
<< "Erroneous edge: was expecting ["
<< expectedEdge->GetOrigin( )
<< ", "
<< expectedEdge->GetDestination( )
<< "], but got ["
<< currentEdge->GetOrigin( ) << ", "
<< currentEdge->GetDestination( ) << "]. Failed."
<< std::endl;
return EXIT_FAILURE;
}
}
std::cout << "OK" << std::endl;
//////////////////////////////////////////////////////////
// Rotating around destination, there is only one other edge
// BeginGeomDnext( ) returns the edge itself to begin with
edgeNumber = 0;
std::cout << "Testing Dnext iterator... ";
for( IteratorGeom itDnext = foundEdges[ 0 ]->BeginGeomDnext( );
itDnext != foundEdges[ 0 ]->EndGeomDnext( );
itDnext++, edgeNumber++ )
{
MeshType::QEPrimal* expectedEdge;
if( edgeNumber )
{
expectedEdge = foundEdges[ edgeNumber ]->GetSym( );
}
else
{
expectedEdge = foundEdges[ edgeNumber ];
}
MeshType::QEPrimal* currentEdge = itDnext.Value( );
if ( currentEdge != expectedEdge )
{
std::cout << std::endl
<< "Erroneous edge: was expecting ["
<< expectedEdge->GetOrigin( )
<< ", "
<< expectedEdge->GetDestination( )
<< "], but got ["
<< currentEdge->GetOrigin( ) << ", "
<< currentEdge->GetDestination( ) << "]. Failed."
<< std::endl;
return EXIT_FAILURE;
}
}
std::cout << "OK" << std::endl;
std::cout << "QuadEdgeMeshIteratorTest Passed !" << std::endl;
return EXIT_SUCCESS;
}
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