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/*=========================================================================
Program: Visualization Toolkit
Module: TestGenericStreamTracer.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/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 notice for more information.
=========================================================================*/
// This example demonstrates how to implement a vtkGenericDataSet
// (here vtkBridgeDataSet) and to use vtkGenericDataSetTessellator filter on
// it.
//
// The command line arguments are:
// -I => run in interactive mode; unless this is used, the program will
// not allow interaction and exit
// -D <path> => path to the data; the data should be in <path>/Data/
//#define WRITE_GENERIC_RESULT
#include "vtkActor.h"
#include "vtkDebugLeaks.h"
#include "vtkPointData.h"
#include "vtkProperty.h"
#include "vtkTestUtilities.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkStructuredGrid.h"
#include "vtkStructuredGridReader.h"
#include "vtkBridgeDataSet.h"
#include "vtkGenericCellTessellator.h"
#include "vtkGenericSubdivisionErrorMetric.h"
#include <cassert>
#include "vtkGeometricErrorMetric.h"
#include "vtkAttributesErrorMetric.h"
#include "vtkGenericOutlineFilter.h"
#include "vtkPolyDataMapper.h"
#include "vtkRungeKutta45.h"
#include "vtkGenericStreamTracer.h"
#include "vtkAssignAttribute.h"
#include "vtkPolyData.h"
#include "vtkRibbonFilter.h"
#include "vtkGenericAttributeCollection.h"
#include "vtkGenericAttribute.h"
#include "vtkCamera.h"
#ifdef WRITE_GENERIC_RESULT
# include "vtkXMLPolyDataWriter.h"
#endif // #ifdef WRITE_GENERIC_RESULT
int TestGenericStreamTracer(int argc, char* argv[])
{
// Standard rendering classes
vtkRenderer *renderer = vtkRenderer::New();
vtkRenderWindow *renWin = vtkRenderWindow::New();
renWin->AddRenderer(renderer);
vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
iren->SetRenderWindow(renWin);
// Load the mesh geometry and data from a file
vtkStructuredGridReader *reader = vtkStructuredGridReader::New();
char *cfname = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/office.binary.vtk");
//char *cfname = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/quadTet2.vtu");
reader->SetFileName( cfname );
delete[] cfname;
// Force reading
reader->Update();
// Initialize the bridge
vtkBridgeDataSet *ds=vtkBridgeDataSet::New();
ds->SetDataSet( reader->GetOutput() );
reader->Delete();
// Set the error metric thresholds:
// 1. for the geometric error metric
vtkGeometricErrorMetric *geometricError=vtkGeometricErrorMetric::New();
geometricError->SetRelativeGeometricTolerance(0.1,ds);
ds->GetTessellator()->GetErrorMetrics()->AddItem(geometricError);
geometricError->Delete();
// 2. for the attribute error metric
vtkAttributesErrorMetric *attributesError=vtkAttributesErrorMetric::New();
attributesError->SetAttributeTolerance(0.01);
ds->GetTessellator()->GetErrorMetrics()->AddItem(attributesError);
attributesError->Delete();
cout<<"input unstructured grid: "<<ds<<endl;
vtkIndent indent;
ds->PrintSelf(cout,indent);
vtkGenericOutlineFilter *outline=vtkGenericOutlineFilter::New();
outline->SetInputData(ds);
vtkPolyDataMapper *mapOutline=vtkPolyDataMapper::New();
mapOutline->SetInputConnection(outline->GetOutputPort());
vtkActor *outlineActor=vtkActor::New();
outlineActor->SetMapper(mapOutline);
outlineActor->GetProperty()->SetColor(0,0,0);
vtkRungeKutta45 *rk=vtkRungeKutta45::New();
// Create source for streamtubes
vtkGenericStreamTracer *streamer=vtkGenericStreamTracer::New();
streamer->SetInputData(ds);
streamer->SetStartPosition(0.1,2.1,0.5);
streamer->SetMaximumPropagation(0,500);
streamer->SetMinimumIntegrationStep(1,0.1);
streamer->SetMaximumIntegrationStep(1,1.0);
streamer->SetInitialIntegrationStep(2,0.2);
streamer->SetIntegrationDirection(0);
streamer->SetIntegrator(rk);
streamer->SetRotationScale(0.5);
streamer->SetMaximumError(1.0E-8);
vtkAssignAttribute *aa=vtkAssignAttribute::New();
aa->SetInputConnection(streamer->GetOutputPort());
aa->Assign("Normals",vtkDataSetAttributes::NORMALS,
vtkAssignAttribute::POINT_DATA);
vtkRibbonFilter *rf1=vtkRibbonFilter::New();
rf1->SetInputConnection(aa->GetOutputPort());
rf1->SetWidth(0.1);
rf1->VaryWidthOff();
vtkPolyDataMapper *mapStream=vtkPolyDataMapper::New();
mapStream->SetInputConnection(rf1->GetOutputPort());
mapStream->SetScalarRange(ds->GetAttributes()->GetAttribute(0)->GetRange());
vtkActor *streamActor=vtkActor::New();
streamActor->SetMapper(mapStream);
renderer->AddActor(outlineActor);
renderer->AddActor(streamActor);
vtkCamera *cam=renderer->GetActiveCamera();
cam->SetPosition(-2.35599,-3.35001,4.59236);
cam->SetFocalPoint(2.255,2.255,1.28413);
cam->SetViewUp(0.311311,0.279912,0.908149);
cam->SetClippingRange(1.12294,16.6226);
#ifdef WRITE_GENERIC_RESULT
// Save the result of the filter in a file
vtkXMLPolyDataWriter *writer=vtkXMLPolyDataWriter::New();
writer->SetInputConnection(streamer->GetOutputPort());
writer->SetFileName("streamed.vtu");
writer->SetDataModeToAscii();
writer->Write();
writer->Delete();
#endif // #ifdef WRITE_GENERIC_RESULT
// Standard testing code.
renderer->SetBackground(0.4,0.4,0.5);
renWin->SetSize(300,200);
renWin->Render();
streamer->GetOutput()->PrintSelf(cout,indent);
int retVal = vtkRegressionTestImage( renWin );
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
// Cleanup
renderer->Delete();
renWin->Delete();
iren->Delete();
ds->Delete();
outline->Delete();
mapOutline->Delete();
outlineActor->Delete();
rk->Delete();
streamer->Delete();
aa->Delete();
rf1->Delete();
mapStream->Delete();
streamActor->Delete();
return !retVal;
}
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