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/*=========================================================================
Program: Visualization Toolkit
Module: TestGPURayCastVolumeScale.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 additive method.
// This test volume renders a synthetic dataset with unsigned char values,
// with the additive method.
#include <vtkCamera.h>
#include <vtkColorTransferFunction.h>
#include <vtkDataArray.h>
#include <vtkGPUVolumeRayCastMapper.h>
#include <vtkImageChangeInformation.h>
#include <vtkImageData.h>
#include <vtkImageReader.h>
#include <vtkImageShiftScale.h>
#include <vtkNew.h>
#include <vtkOutlineFilter.h>
#include <vtkPiecewiseFunction.h>
#include <vtkPointData.h>
#include <vtkPolyDataMapper.h>
#include <vtkRegressionTestImage.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>
#include <vtkTestUtilities.h>
#include <vtkTimerLog.h>
#include <vtkVolumeProperty.h>
#include <vtkXMLImageDataReader.h>
int TestGPURayCastVolumeScale(int argc, char *argv[])
{
double scalarRange[2];
vtkNew<vtkActor> outlineActor;
vtkNew<vtkPolyDataMapper> outlineMapper;
vtkNew<vtkGPUVolumeRayCastMapper> volumeMapper;
vtkNew<vtkXMLImageDataReader> reader;
const char* volumeFile = vtkTestUtilities::ExpandDataFileName(
argc, argv, "Data/vase_1comp.vti");
reader->SetFileName(volumeFile);
vtkSmartPointer<vtkImageChangeInformation> changeInformation =
vtkSmartPointer<vtkImageChangeInformation>::New();
changeInformation->SetInputConnection(reader->GetOutputPort());
changeInformation->SetOutputSpacing(1, 2, 3);
changeInformation->SetOutputOrigin(10, 20, 30);
changeInformation->Update();
volumeMapper->SetInputConnection(changeInformation->GetOutputPort());
// Add outline filter
vtkNew<vtkOutlineFilter> outlineFilter;
outlineFilter->SetInputConnection(changeInformation->GetOutputPort());
outlineMapper->SetInputConnection(outlineFilter->GetOutputPort());
outlineActor->SetMapper(outlineMapper.GetPointer());
volumeMapper->GetInput()->GetScalarRange(scalarRange);
volumeMapper->SetBlendModeToComposite();
vtkNew<vtkRenderWindow> renWin;
vtkNew<vtkRenderer> ren;
renWin->AddRenderer(ren.GetPointer());
renWin->SetSize(400, 400);
ren->SetBackground(0.2, 0.2, 0.5);
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], 0.0, 0.0, 0.0);
colorTransferFunction->AddRGBPoint(scalarRange[1], 1.0, 1.0, 1.0);
vtkNew<vtkVolume> volume;
volume->SetMapper(volumeMapper.GetPointer());
volume->SetProperty(volumeProperty.GetPointer());
ren->AddViewProp(volume.GetPointer());
ren->AddActor(outlineActor.GetPointer());
renWin->Render();
ren->ResetCamera();
iren->Initialize();
int retVal = vtkRegressionTestImage( renWin.GetPointer() );
if( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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