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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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.
*
*=========================================================================*/
#ifndef itkQuadEdgeMeshEulerOperatorJoinFacetFunction_hxx
#define itkQuadEdgeMeshEulerOperatorJoinFacetFunction_hxx
namespace itk
{
template <typename TMesh, typename TQEType>
auto
QuadEdgeMeshEulerOperatorJoinFacetFunction<TMesh, TQEType>::Evaluate(QEType * e) -> OutputType
{
#ifndef NDEBUG
if (!e)
{
itkDebugMacro("Input is not an edge.");
return ((QEType *)nullptr);
}
if (!this->m_Mesh)
{
itkDebugMacro("No mesh present.");
return ((QEType *)nullptr);
}
#endif
if (!e->IsInternal())
{
itkDebugMacro("The edge is either border or wire.");
return ((QEType *)nullptr);
}
// Initial state Final state //
//
// Dest Dest //
// /|\ / \ //
// / | \ / \ //
// / | \ / \ //
// / | \ / \ //
// / | \ / \ //
// / | \ / \ //
// / | \ / \ //
// / ^ \ / \ //
// o F1 | F2 o o new Face o //
// \ e / \ / //
// \ | / \ / //
// ^ | / returned e / //
// \ | / \ / //
// oNext | / v / //
// \ | / \ / //
// \ | / \ / //
// \|/ \ / //
// Org Org //
//
QEType * return_e = e->GetOnext()->GetSym();
// delete the edge and the two associated faces
this->m_Mesh->LightWeightDeleteEdge(e);
// Build a new face in replacement of the one we deleted:
this->m_Mesh->AddFace(return_e);
this->m_Mesh->Modified();
return (return_e);
}
} // end namespace itk
#endif
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