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vtkTesselateBoundaryLoops.cxx
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vtkTesselateBoundaryLoops.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTesselateBoundaryLoops.cxx
Language: C++
Version: $Id$
Copyright (c) 2004 Goodwin Lawlor
All rights reserved.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkTesselateBoundaryLoops.h"
#include "vtkObjectFactory.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkFeatureEdges.h"
#include "vtkCleanPolyData.h"
#include "vtkStripper.h"
#include "vtkPolyData.h"
#include "vtkTriangleFilter.h"
#include "vtkAppendPolyData.h"
#include "vtkReverseSense.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
vtkCxxRevisionMacro(vtkTesselateBoundaryLoops, "$Revision$");
vtkStandardNewMacro(vtkTesselateBoundaryLoops);
vtkTesselateBoundaryLoops::vtkTesselateBoundaryLoops()
{
this->Tolerance = 0.0;
this->AppendTesselationToInput = 0;
this->ReverseSense = 0;
this->MaximumLength = 1000;
this->NumberOfLoops = 0;
this->NonManifoldEdges = 0;
// setup the pipeline
this->FeatureEdges = vtkFeatureEdges::New();
this->FeatureEdges->BoundaryEdgesOn();
this->FeatureEdges->FeatureEdgesOff();
this->Clean = vtkCleanPolyData::New();
this->Clean->SetInput(this->FeatureEdges->GetOutput());
this->Stripper = vtkStripper::New();
this->Stripper->SetInput(Clean->GetOutput());
this->tmpPolyData = vtkPolyData::New();
this->Reverse = vtkReverseSense::New();
this->Reverse->SetInput(tmpPolyData);
this->Tesselator = vtkTriangleFilter::New();
this->Tesselator->SetInput(this->Reverse->GetOutput());
this->Append = vtkAppendPolyData::New();
this->Append->AddInput(this->Tesselator->GetOutput());
this->Clean2 = vtkCleanPolyData::New();
this->Clean2->SetInput(this->Append->GetOutput());
}
vtkTesselateBoundaryLoops::~vtkTesselateBoundaryLoops()
{
this->FeatureEdges->Delete();
this->Clean->Delete();
this->Stripper->Delete();
this->tmpPolyData->Delete();
this->Reverse->Delete();
this->Tesselator->Delete();
this->Append->Delete();
this->Clean2->Delete();
}
int vtkTesselateBoundaryLoops::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and ouptut
vtkPolyData *input = vtkPolyData::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkPolyData *output = vtkPolyData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
this->FeatureEdges->SetInput(input);
// sometimes a boundary edge is non-manifold.
this->FeatureEdges->SetNonManifoldEdges(this->NonManifoldEdges);
this->Clean->SetTolerance(this->Tolerance);
this->Stripper->SetMaximumLength(this->MaximumLength);
this->Stripper->Update();
this->NumberOfLoops = this->Stripper->GetOutput()->GetNumberOfLines();
this->tmpPolyData->SetPolys(this->Stripper->GetOutput()->GetLines());
this->tmpPolyData->SetPoints(this->Stripper->GetOutput()->GetPoints());
this->Reverse->SetReverseCells(this->ReverseSense);
vtkPolyData *last;
if (this->AppendTesselationToInput)
{
this->Append->AddInput(input);
this->Clean2->Update();
last = this->Clean2->GetOutput();
}
else
{
this->Tesselator->Update();
last = this->Tesselator->GetOutput();
}
output->SetPoints(last->GetPoints());
output->SetPolys(last->GetPolys());
vtkDebugMacro(<< "Finished tesselation");
return 1;
}
void vtkTesselateBoundaryLoops::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}