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/*=========================================================================
Program: Visualization Toolkit
Module: TestScalarsToColorsPainter.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 the vtkOpenGLScalarsToColorPainter to ensure that
// when the option InterpolateScalarsBeforeMapping is on,
// rendering is correct. It verifies a bug fix for 14828
#include "vtkActor.h"
#include "vtkColorTransferFunction.h"
#include "vtkCylinderSource.h"
#include "vtkDataArray.h"
#include "vtkExtractEdges.h"
#include "vtkNew.h"
#include "vtkPainterPolyDataMapper.h"
#include "vtkPointData.h"
#include "vtkProperty.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkTestUtilities.h"
int TestScalarsToColorsPainter(int argc, char* argv[])
{
// Set up cylinder source
vtkNew<vtkCylinderSource> cylinder;
cylinder->CappingOn();
cylinder->SetResolution(32);
cylinder->Update();
vtkNew<vtkExtractEdges> edges;
edges->SetInputConnection(cylinder->GetOutputPort());
// Set up lookup table
vtkNew<vtkColorTransferFunction> lookupTable;
lookupTable->AddRGBPoint(0.0, 1.0, 1.0, 1.0);
lookupTable->AddRGBPoint(1.0, 1.0, 0.0, 0.0);
lookupTable->SetVectorModeToComponent();
lookupTable->SetVectorComponent(0);
// Set display to wireframe
vtkNew<vtkPainterPolyDataMapper> mapper;
mapper->SetInputConnection(edges->GetOutputPort());
mapper->SetLookupTable(lookupTable.GetPointer());
mapper->SelectColorArray("TCoords");
mapper->SetScalarModeToUsePointFieldData();
mapper->ScalarVisibilityOn();
mapper->InterpolateScalarsBeforeMappingOn();
vtkNew<vtkActor> actor;
actor->SetMapper(mapper.GetPointer());
// Set the wireframe color to something non-white
vtkProperty* property = actor->GetProperty();
property->SetRepresentationToSurface();
property->SetAmbient(1.0);
property->SetDiffuse(0.0);
// Set the color to black to test that bug 14828 is fixed
property->SetColor(0.0, 0.0, 0.0);
// Render image
vtkNew<vtkRenderer> renderer;
renderer->AddActor(actor.GetPointer());
vtkNew<vtkRenderWindow> renWin;
renWin->SetMultiSamples(0);
renWin->SetAlphaBitPlanes(1);
renWin->AddRenderer(renderer.GetPointer());
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin.GetPointer());
// Compare image
int retVal = vtkRegressionTestImage(renWin.GetPointer());
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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