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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCompositePolyDataMapper2.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 "vtkColorTransferFunction.h"
#include "vtkCompositeDataDisplayAttributes.h"
#include "vtkCompositePolyDataMapper2.h"
#include "vtkCylinderSource.h"
#include "vtkDoubleArray.h"
#include "vtkFieldData.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkNew.h"
#include "vtkProperty.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSmartPointer.h"
#include "vtkSphereSource.h"
// Test for multiblock data sets with field data arrays defined on
// only a subset of the blocks. The expected behavior is to have
// coloring by scalars on the blocks with the data array and coloring
// as though scalar mapping is turned off in the blocks without the
// data array.
int TestMultiBlockPartialArrayFieldData(int argc, char* argv[])
{
vtkSmartPointer<vtkRenderWindow> win =
vtkSmartPointer<vtkRenderWindow>::New();
vtkSmartPointer<vtkRenderWindowInteractor> iren =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkRenderer> ren =
vtkSmartPointer<vtkRenderer>::New();
win->AddRenderer(ren);
win->SetInteractor(iren);
// Components of the multiblock data set
vtkNew<vtkSphereSource> sphereSource;
sphereSource->SetRadius(2.0);
vtkNew<vtkCylinderSource> cylinderSource;
cylinderSource->SetRadius(1.5);
cylinderSource->SetHeight(2.0);
cylinderSource->SetResolution(32);
// Set up the multiblock data set consisting of a ring of blocks
vtkSmartPointer<vtkMultiBlockDataSet> data = vtkSmartPointer<vtkMultiBlockDataSet>::New();
int numBlocks = 16;
data->SetNumberOfBlocks(numBlocks);
double radius = 10.0;
double deltaTheta = 2.0*3.1415926 / numBlocks;
for (int i = 0; i < numBlocks; ++i)
{
double theta = i * deltaTheta;
double x = radius * cos(theta);
double y = radius * sin(theta);
vtkPolyData* pd = vtkPolyData::New();
// Every third block does not have the color array
if (i % 3 == 0)
{
sphereSource->SetCenter(x, y, 0.0);
sphereSource->Update();
pd->DeepCopy(sphereSource->GetOutput());
}
else
{
cylinderSource->SetCenter(x, y, 0.0);
cylinderSource->Update();
pd->DeepCopy(cylinderSource->GetOutput());
// Add a field data array
vtkSmartPointer<vtkDoubleArray> dataArray = vtkSmartPointer<vtkDoubleArray>::New();
dataArray->SetName("mydata");
dataArray->SetNumberOfComponents(1);
dataArray->SetNumberOfTuples(1);
dataArray->InsertValue(0, static_cast<double>(i));
pd->GetFieldData()->AddArray(dataArray);
}
data->SetBlock(i, pd);
pd->Delete();
}
vtkNew<vtkColorTransferFunction> lookupTable;
lookupTable->AddRGBPoint(0.0, 1.0, 1.0, 1.0);
lookupTable->AddRGBPoint(static_cast<double>(numBlocks-1), 0.0, 1.0, 0.0);
vtkSmartPointer<vtkCompositePolyDataMapper2> mapper =
vtkSmartPointer<vtkCompositePolyDataMapper2>::New();
mapper->SetInputDataObject(data);
// Tell mapper to use field data for rendering
mapper->SetLookupTable(lookupTable.GetPointer());
mapper->SetFieldDataTupleId(0);
mapper->SelectColorArray("mydata");
mapper->SetScalarModeToUseFieldData();
mapper->UseLookupTableScalarRangeOn();
mapper->ScalarVisibilityOn();
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
actor->GetProperty()->SetColor(1.0, 0.67, 1.0);
ren->AddActor(actor);
win->SetSize(400, 400);
ren->ResetCamera();
win->Render();
int retVal = vtkRegressionTestImageThreshold( win.GetPointer(),15);
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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