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/*=========================================================================
Program: Visualization Toolkit
Module: TestTranslucentLUTDepthPeeling.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 rendering of an actor with a translucent LUT and depth
// peeling. The mapper uses color interpolation (poor quality).
//
// The command line arguments are:
// -I => run in interactive mode; unless this is used, the program will
// not allow interaction and exit
#include "vtkTestUtilities.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkActor.h"
#include "vtkImageSinusoidSource.h"
#include "vtkImageData.h"
#include "vtkImageDataGeometryFilter.h"
#include "vtkDataSetSurfaceFilter.h"
#include "vtkPolyDataMapper.h"
#include "vtkLookupTable.h"
#include "vtkCamera.h"
int TestTranslucentLUTDepthPeeling(int argc, char* argv[])
{
vtkRenderWindowInteractor *iren=vtkRenderWindowInteractor::New();
vtkRenderWindow *renWin = vtkRenderWindow::New();
renWin->SetMultiSamples(0);
renWin->SetAlphaBitPlanes(1);
iren->SetRenderWindow(renWin);
renWin->Delete();
vtkRenderer *renderer = vtkRenderer::New();
renWin->AddRenderer(renderer);
renderer->Delete();
renderer->SetUseDepthPeeling(1);
renderer->SetMaximumNumberOfPeels(200);
renderer->SetOcclusionRatio(0.1);
vtkImageSinusoidSource *imageSource=vtkImageSinusoidSource::New();
imageSource->SetWholeExtent(0,9,0,9,0,9);
imageSource->SetPeriod(5);
imageSource->Update();
vtkImageData *image=imageSource->GetOutput();
double range[2];
image->GetScalarRange(range);
vtkDataSetSurfaceFilter *surface=vtkDataSetSurfaceFilter::New();
surface->SetInputConnection(imageSource->GetOutputPort());
imageSource->Delete();
vtkPolyDataMapper *mapper=vtkPolyDataMapper::New();
mapper->SetInputConnection(surface->GetOutputPort());
surface->Delete();
vtkLookupTable *lut=vtkLookupTable::New();
lut->SetTableRange(range);
lut->SetAlphaRange(0.5,0.5);
lut->SetHueRange(0.2,0.7);
lut->SetNumberOfTableValues(256);
lut->Build();
mapper->SetScalarVisibility(1);
mapper->SetLookupTable(lut);
lut->Delete();
vtkActor *actor=vtkActor::New();
renderer->AddActor(actor);
actor->Delete();
actor->SetMapper(mapper);
mapper->Delete();
renderer->SetBackground(0.1,0.3,0.0);
renWin->SetSize(400,400);
renWin->Render();
if(renderer->GetLastRenderingUsedDepthPeeling())
{
cout<<"depth peeling was used"<<endl;
}
else
{
cout<<"depth peeling was not used (alpha blending instead)"<<endl;
}
vtkCamera *camera=renderer->GetActiveCamera();
camera->Azimuth(-40.0);
camera->Elevation(20.0);
renWin->Render();
int retVal = vtkRegressionTestImage( renWin );
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
iren->Delete();
return !retVal;
}
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