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/*=========================================================================
Program: Visualization Toolkit
Module: TestProjectedTetrahedraTransform.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 <vtkActor.h>
#include <vtkColorTransferFunction.h>
#include <vtkConeSource.h>
#include <vtkDoubleArray.h>
#include <vtkNew.h>
#include <vtkPointData.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProjectedTetrahedraMapper.h>
#include <vtkProp3D.h>
#include <vtkProperty.h>
#include <vtkRectilinearGrid.h>
#include <vtkRectilinearGridToTetrahedra.h>
#include <vtkRegressionTestImage.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSmartPointer.h>
#include <vtkTesting.h>
#include <vtkTransform.h>
#include <vtkUnstructuredGrid.h>
#include <vtkVolumeProperty.h>
// Creates a cube volume
vtkSmartPointer<vtkVolume> CubeVolume(double r, double g, double b)
{
// Create the coordinates
vtkNew<vtkDoubleArray> xArray;
xArray->InsertNextValue(0.0);
xArray->InsertNextValue(1.0);
vtkNew<vtkDoubleArray> yArray;
yArray->InsertNextValue(0.0);
yArray->InsertNextValue(1.0);
vtkNew<vtkDoubleArray> zArray;
zArray->InsertNextValue(0.0);
zArray->InsertNextValue(1.0);
// Create the RectilinearGrid
vtkNew<vtkRectilinearGrid> grid;
grid->SetDimensions(2, 2, 2);
grid->SetXCoordinates(xArray.GetPointer());
grid->SetYCoordinates(yArray.GetPointer());
grid->SetZCoordinates(zArray.GetPointer());
// Obtain an UnstructuredGrid made of tetrahedras
vtkNew<vtkRectilinearGridToTetrahedra> rectilinearGridToTetrahedra;
rectilinearGridToTetrahedra->SetInputData(grid.GetPointer());
rectilinearGridToTetrahedra->Update();
vtkSmartPointer<vtkUnstructuredGrid> ugrid
= rectilinearGridToTetrahedra->GetOutput();
// Add scalars to the grid
vtkNew<vtkDoubleArray> scalars;
for (int i = 0; i < 8; i++)
{
scalars->InsertNextValue(0);
}
ugrid->GetPointData()->SetScalars(scalars.GetPointer());
// Volume Rendering Mapper
vtkNew<vtkProjectedTetrahedraMapper> mapper;
mapper->SetInputData(ugrid);
mapper->Update();
// Create the volume
vtkSmartPointer<vtkVolume> volume = vtkSmartPointer<vtkVolume>::New();
volume->SetMapper(mapper.GetPointer());
// Apply a ColorTransferFunction to the volume
vtkNew<vtkColorTransferFunction> colorTransferFunction;
colorTransferFunction->AddRGBPoint(0.0, r, g, b);
volume->GetProperty()->SetColor(colorTransferFunction.GetPointer());
return volume;
}
// Creates a cone actor
vtkSmartPointer<vtkActor> ConeActor(double r, double g, double b)
{
// Simple cone mapper
vtkNew<vtkPolyDataMapper> mapper;
vtkNew<vtkConeSource> coneSource;
coneSource->SetCenter(0.0, 0.0, 0.0);
mapper->SetInputConnection(coneSource->GetOutputPort());
// Create the actor
vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
actor->GetProperty()->SetColor(r, g, b);
actor->SetMapper(mapper.GetPointer());
return actor;
}
int TestProjectedTetrahedraTransform(int argc, char *argv[])
{
// Create the props
// The red cube volume
vtkSmartPointer<vtkProp3D> volume1 = CubeVolume(1, 0, 0);
// The blue cube volume
vtkSmartPointer<vtkProp3D> volume2 = CubeVolume(0, 0, 1);
// The red cone actor
vtkSmartPointer<vtkProp3D> actor1 = ConeActor(1, 0, 0);
// The blue cone actor
vtkSmartPointer<vtkProp3D> actor2 = ConeActor(0, 0, 1);
// Translate the blue props by (2,2)
vtkNew<vtkTransform> transform;
transform->Translate(2, 2, 0);
volume2->SetUserTransform(transform.GetPointer());
actor2->SetUserTransform(transform.GetPointer());
// Create a renderer, render window, and interactor
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer.GetPointer());
renderWindow->SetSize(300, 300);
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow.GetPointer());
// Add the props to the scene
renderer->AddVolume(volume1);
renderer->AddVolume(volume2);
renderer->AddActor(actor1);
renderer->AddActor(actor2);
renderer->SetBackground(1, 1, 1);
// Render and interact
renderWindow->Render();
renderer->ResetCamera();
renderWindow->Render();
int retVal = vtkTesting::Test(argc, argv, renderWindow.GetPointer(), 20);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
renderWindowInteractor->Start();
}
return !retVal;
}
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