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107 lines
3.0 KiB
107 lines
3.0 KiB
2 years ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: task2.cxx,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#include "TaskParallelism.h"
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#include "vtkImageData.h"
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#include "vtkPolyDataMapper.h"
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// Task 2 for TaskParallelism.
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// See TaskParallelism.cxx for more information.
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vtkPolyDataMapper* task2(vtkRenderWindow* renWin, double data,
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vtkCamera* cam)
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{
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double extent = data;
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int iextent = static_cast<int>(data);
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// The pipeline
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// Synthetic image source.
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vtkRTAnalyticSource* source1 = vtkRTAnalyticSource::New();
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source1->SetWholeExtent (-1*iextent, iextent, -1*iextent, iextent,
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-1*iextent, iextent );
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source1->SetCenter(0, 0, 0);
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source1->SetStandardDeviation( 0.5 );
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source1->SetMaximum( 255.0 );
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source1->SetXFreq( 60 );
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source1->SetXMag( 10 );
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source1->SetYFreq( 30 );
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source1->SetYMag( 18 );
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source1->SetZFreq( 40 );
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source1->SetZMag( 5 );
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source1->GetOutput()->SetSpacing(2.0/extent,2.0/extent,2.0/extent);
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// Gradient vector.
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vtkImageGradient* grad = vtkImageGradient::New();
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grad->SetDimensionality( 3 );
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grad->SetInputConnection(source1->GetOutputPort());
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vtkImageShrink3D* mask = vtkImageShrink3D::New();
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mask->SetInputConnection(grad->GetOutputPort());
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mask->SetShrinkFactors(5, 5, 5);
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// Label the scalar field as the active vectors.
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vtkAssignAttribute* aa = vtkAssignAttribute::New();
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aa->SetInputConnection(mask->GetOutputPort());
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aa->Assign(vtkDataSetAttributes::SCALARS, vtkDataSetAttributes::VECTORS,
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vtkAssignAttribute::POINT_DATA);
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vtkGlyphSource2D* arrow = vtkGlyphSource2D::New();
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arrow->SetGlyphTypeToArrow();
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arrow->SetScale(0.2);
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arrow->FilledOff();
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// Glyph the gradient vector (with arrows)
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vtkGlyph3D* glyph = vtkGlyph3D::New();
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glyph->SetInputConnection(aa->GetOutputPort());
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glyph->SetSource(arrow->GetOutput());
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glyph->ScalingOff();
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glyph->OrientOn();
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glyph->SetVectorModeToUseVector();
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glyph->SetColorModeToColorByVector();
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// Rendering objects.
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vtkPolyDataMapper* mapper = vtkPolyDataMapper::New();
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mapper->SetInputConnection(glyph->GetOutputPort());
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mapper->SetScalarRange(50, 180);
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mapper->ImmediateModeRenderingOn();
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vtkActor* actor = vtkActor::New();
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actor->SetMapper(mapper);
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vtkRenderer* ren = vtkRenderer::New();
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renWin->AddRenderer(ren);
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ren->AddActor(actor);
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ren->SetActiveCamera( cam );
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// Cleanup
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source1->Delete();
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grad->Delete();
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aa->Delete();
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mask->Delete();
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glyph->Delete();
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arrow->Delete();
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actor->Delete();
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ren->Delete();
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return mapper;
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}
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