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/*=========================================================================
Program: Visualization Toolkit
Module: task1.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.
=========================================================================*/
#include "TaskParallelism.h"
#include "vtkImageData.h"
#include "vtkPolyData.h"
#include "vtkPolyDataMapper.h"
// Task 1 for TaskParallelism.
// See TaskParallelism.cxx for more information.
vtkPolyDataMapper* task1(vtkRenderWindow* renWin, double data,
vtkCamera* cam)
{
double extent = data;
int iextent = static_cast<int>(data);
// The pipeline
// Synthetic image source.
vtkRTAnalyticSource* source1 = vtkRTAnalyticSource::New();
source1->SetWholeExtent (-1*iextent, iextent, -1*iextent, iextent,
-1*iextent, iextent );
source1->SetCenter(0, 0, 0);
source1->SetStandardDeviation( 0.5 );
source1->SetMaximum( 255.0 );
source1->SetXFreq( 60 );
source1->SetXMag( 10 );
source1->SetYFreq( 30 );
source1->SetYMag( 18 );
source1->SetZFreq( 40 );
source1->SetZMag( 5 );
source1->GetOutput()->SetSpacing(2.0/extent,2.0/extent,2.0/extent);
// Iso-surfacing.
vtkContourFilter* contour = vtkContourFilter::New();
contour->SetInputConnection(source1->GetOutputPort());
contour->SetNumberOfContours(1);
contour->SetValue(0, 220);
// Magnitude of the gradient vector.
vtkImageGradientMagnitude* magn = vtkImageGradientMagnitude::New();
magn->SetDimensionality(3);
magn->SetInputConnection(source1->GetOutputPort());
// Probe magnitude with iso-surface.
vtkProbeFilter* probe = vtkProbeFilter::New();
probe->SetInputConnection(contour->GetOutputPort());
probe->SetSource(magn->GetOutput());
probe->SpatialMatchOn();
// Rendering objects.
vtkPolyDataMapper* mapper = vtkPolyDataMapper::New();
mapper->SetInput(probe->GetPolyDataOutput());
mapper->SetScalarRange(50, 180);
mapper->ImmediateModeRenderingOn();
vtkActor* actor = vtkActor::New();
actor->SetMapper(mapper);
vtkRenderer* ren = vtkRenderer::New();
renWin->AddRenderer(ren);
ren->AddActor(actor);
ren->SetActiveCamera( cam );
// Cleanup
source1->Delete();
contour->Delete();
magn->Delete();
probe->Delete();
actor->Delete();
ren->Delete();
return mapper;
}
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