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/*=========================================================================
Program: Visualization Toolkit
Module: TestGPURayCastClipping.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 test covers cropping on volume datasets.
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkColorTransferFunction.h>
#include <vtkGPUVolumeRayCastMapper.h>
#include <vtkImageData.h>
#include <vtkNew.h>
#include <vtkPiecewiseFunction.h>
#include <vtkPlane.h>
#include <vtkPlaneCollection.h>
#include <vtkRegressionTestImage.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>
#include <vtkTestUtilities.h>
#include <vtkVolumeProperty.h>
#include <vtkXMLImageDataReader.h>
int TestGPURayCastClipping(int argc, char *argv[])
{
double scalarRange[2];
vtkNew<vtkGPUVolumeRayCastMapper> volumeMapper;
vtkNew<vtkXMLImageDataReader> reader;
const char* volumeFile = vtkTestUtilities::ExpandDataFileName(
argc, argv, "Data/vase_1comp.vti");
reader->SetFileName(volumeFile);
reader->Update();
volumeMapper->SetInputConnection(reader->GetOutputPort());
volumeMapper->GetInput()->GetScalarRange(scalarRange);
volumeMapper->SetBlendModeToComposite();
// Testing prefers image comparison with small images
vtkNew<vtkRenderWindow> renWin;
renWin->SetSize(400, 400);
vtkNew<vtkRenderer> ren;
renWin->AddRenderer(ren.GetPointer());
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin.GetPointer());
vtkNew<vtkPiecewiseFunction> scalarOpacity;
scalarOpacity->AddPoint(scalarRange[0], 0.0);
scalarOpacity->AddPoint(scalarRange[1], 1.0);
vtkNew<vtkVolumeProperty> volumeProperty;
volumeProperty->ShadeOff();
volumeProperty->SetInterpolationType(VTK_LINEAR_INTERPOLATION);
volumeProperty->SetScalarOpacity(scalarOpacity.GetPointer());
vtkSmartPointer<vtkColorTransferFunction> colorTransferFunction =
volumeProperty->GetRGBTransferFunction(0);
colorTransferFunction->RemoveAllPoints();
colorTransferFunction->AddRGBPoint(scalarRange[0], 0.1, 0.5, 1.0);
colorTransferFunction->AddRGBPoint(scalarRange[1], 1.0, 0.5, 0.1);
// Test cropping now
double* bounds = reader->GetOutput()->GetBounds();
vtkNew<vtkPlane> clipPlane1;
clipPlane1->SetOrigin(0.45 * (bounds[0] + bounds[1]), 0.0, 0.0);
clipPlane1->SetNormal(0.8, 0.0, 0.0);
vtkNew<vtkPlane> clipPlane2;
clipPlane2->SetOrigin(0.45 * (bounds[0] + bounds[1]),
0.35 * (bounds[2] + bounds[3]), 0.0);
clipPlane2->SetNormal(0.2, -0.2, 0.0);
vtkNew<vtkPlaneCollection> clipPlaneCollection;
clipPlaneCollection->AddItem(clipPlane1.GetPointer());
clipPlaneCollection->AddItem(clipPlane2.GetPointer());
volumeMapper->SetClippingPlanes(clipPlaneCollection.GetPointer());
// Setup volume actor
vtkNew<vtkVolume> volume;
volume->SetMapper(volumeMapper.GetPointer());
volume->SetProperty(volumeProperty.GetPointer());
ren->AddViewProp(volume.GetPointer());
ren->GetActiveCamera()->Azimuth(-40);
ren->ResetCamera();
renWin->Render();
iren->Initialize();
int retVal = vtkRegressionTestImage( renWin.GetPointer() );
if( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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