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/*=========================================================================
Program: Visualization Toolkit
Module: TestTranslucentImageActorAlphaBlending.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 translucent image actor with alpha blending.
//
// 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 "vtkPNGReader.h"
#include "vtkImageActor.h"
#include "vtkImageMapper3D.h"
#include "vtkCamera.h"
int TestTranslucentImageActorAlphaBlending(int argc, char* argv[])
{
vtkRenderWindowInteractor *iren=vtkRenderWindowInteractor::New();
vtkRenderWindow *renWin = vtkRenderWindow::New();
iren->SetRenderWindow(renWin);
renWin->Delete();
vtkRenderer *renderer = vtkRenderer::New();
renWin->AddRenderer(renderer);
renderer->Delete();
vtkImageActor *ia=vtkImageActor::New();
renderer->AddActor(ia);
ia->Delete();
vtkPNGReader *pnmReader=vtkPNGReader::New();
ia->GetMapper()->SetInputConnection(pnmReader->GetOutputPort());
pnmReader->Delete();
char* fname = vtkTestUtilities::ExpandDataFileName(
argc, argv, "Data/alphachannel.png");
pnmReader->SetFileName(fname);
delete[] fname;
renderer->SetBackground(0.1,0.2,0.4);
renWin->SetSize(400,400);
renWin->Render();
int retVal = vtkRegressionTestImage( renWin );
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
iren->Delete();
return !retVal;
}
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