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/*=========================================================================
Program: Visualization Toolkit
Module: TestMonitors.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.
=========================================================================*/
#include "vtkSmartPointer.h"
#include "vtkSphereSource.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkProperty.h"
#include "vtkCamera.h"
#include "vtkLight.h"
#include "vtkOpenGLLightMonitor.h"
#include "vtkOpenGLModelViewProjectionMonitor.h"
#include "vtkBackgroundColorMonitor.h"
#include "vtkLightingHelper.h"
int TestMonitors(int argc, char* argv[])
{
(void)argc;
(void)argv;
cerr << "CTEST_FULL_OUTPUT (Avoid ctest truncation of output)" << endl << endl;
// initialize a scene with a bunch of spheres
vtkSmartPointer<vtkSphereSource> sphere =
vtkSmartPointer<vtkSphereSource>::New();
sphere->SetThetaResolution(100);
sphere->SetPhiResolution(50);
vtkSmartPointer<vtkPolyDataMapper> sphereMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
sphereMapper->SetInputConnection(sphere->GetOutputPort());
vtkSmartPointer<vtkActor> sphere1 =
vtkSmartPointer<vtkActor>::New();
sphere1->SetMapper(sphereMapper);
sphere1->GetProperty()->SetColor(1,0,0);
sphere1->GetProperty()->SetAmbient(0.3);
sphere1->GetProperty()->SetDiffuse(0.0);
sphere1->GetProperty()->SetSpecular(1.0);
sphere1->GetProperty()->SetSpecularPower(5.0);
vtkSmartPointer<vtkActor> sphere2 =
vtkSmartPointer<vtkActor>::New();
sphere2->SetMapper(sphereMapper);
sphere2->GetProperty()->SetColor(1,0,0);
sphere2->GetProperty()->SetAmbient(0.3);
sphere2->GetProperty()->SetDiffuse(0.0);
sphere2->GetProperty()->SetSpecular(1.0);
sphere2->GetProperty()->SetSpecularPower(10.0);
sphere2->AddPosition(1.25,0,0);
vtkSmartPointer<vtkActor> sphere3 =
vtkSmartPointer<vtkActor>::New();
sphere3->SetMapper(sphereMapper);
sphere3->GetProperty()->SetColor(1,0,0);
sphere3->GetProperty()->SetAmbient(0.3);
sphere3->GetProperty()->SetDiffuse(0.0);
sphere3->GetProperty()->SetSpecular(1.0);
sphere3->GetProperty()->SetSpecularPower(20.0);
sphere3->AddPosition(2.5,0,0);
vtkSmartPointer<vtkActor> sphere4 =
vtkSmartPointer<vtkActor>::New();
sphere4->SetMapper(sphereMapper);
sphere4->GetProperty()->SetColor(1,0,0);
sphere4->GetProperty()->SetAmbient(0.3);
sphere4->GetProperty()->SetDiffuse(0.0);
sphere4->GetProperty()->SetSpecular(1.0);
sphere4->GetProperty()->SetSpecularPower(40.0);
sphere4->AddPosition(3.75,0,0);
vtkSmartPointer<vtkActor> sphere5 =
vtkSmartPointer<vtkActor>::New();
sphere5->SetMapper(sphereMapper);
sphere5->GetProperty()->SetColor(1,0,0);
sphere5->GetProperty()->SetAmbient(0.3);
sphere5->GetProperty()->SetDiffuse(0.0);
sphere5->GetProperty()->SetSpecular(0.5);
sphere5->GetProperty()->SetSpecularPower(5.0);
sphere5->AddPosition(0.0,1.25,0);
vtkSmartPointer<vtkActor> sphere6 =
vtkSmartPointer<vtkActor>::New();
sphere6->SetMapper(sphereMapper);
sphere6->GetProperty()->SetColor(1,0,0);
sphere6->GetProperty()->SetAmbient(0.3);
sphere6->GetProperty()->SetDiffuse(0.0);
sphere6->GetProperty()->SetSpecular(0.5);
sphere6->GetProperty()->SetSpecularPower(10.0);
sphere6->AddPosition(1.25,1.25,0);
vtkSmartPointer<vtkActor> sphere7 =
vtkSmartPointer<vtkActor>::New();
sphere7->SetMapper(sphereMapper);
sphere7->GetProperty()->SetColor(1,0,0);
sphere7->GetProperty()->SetAmbient(0.3);
sphere7->GetProperty()->SetDiffuse(0.0);
sphere7->GetProperty()->SetSpecular(0.5);
sphere7->GetProperty()->SetSpecularPower(20.0);
sphere7->AddPosition(2.5,1.25,0);
vtkSmartPointer<vtkActor> sphere8 =
vtkSmartPointer<vtkActor>::New();
sphere8->SetMapper(sphereMapper);
sphere8->GetProperty()->SetColor(1,0,0);
sphere8->GetProperty()->SetAmbient(0.3);
sphere8->GetProperty()->SetDiffuse(0.0);
sphere8->GetProperty()->SetSpecular(0.5);
sphere8->GetProperty()->SetSpecularPower(40.0);
sphere8->AddPosition(3.75,1.25,0);
vtkSmartPointer<vtkRenderer> ren1 =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renWin =
vtkSmartPointer<vtkRenderWindow>::New();
renWin->AddRenderer(ren1);
ren1->AddActor(sphere1);
ren1->AddActor(sphere2);
ren1->AddActor(sphere3);
ren1->AddActor(sphere4);
ren1->AddActor(sphere5);
ren1->AddActor(sphere6);
ren1->AddActor(sphere7);
ren1->AddActor(sphere8);
vtkSmartPointer<vtkLight> light =
vtkSmartPointer<vtkLight>::New();
ren1->AddLight(light);
vtkSmartPointer<vtkLight> light2 =
vtkSmartPointer<vtkLight>::New();
ren1->AddLight(light2);
renWin->SetSize(400, 200);
// push all of VTK state to OpenGL.
renWin->Render();
// now create the monitors
// for lighting
// for gl modelview and projection matrices
// for the background color
// and initialize them from current state
cerr
<< "Lights" << endl
<< "================" << endl;
const int nLights = vtkLightingHelper::VTK_MAX_LIGHTS;
vtkSmartPointer<vtkOpenGLLightMonitor> lightMonitor[nLights];
for (int i=0; i<nLights; ++i)
{
lightMonitor[i] = vtkSmartPointer<vtkOpenGLLightMonitor>::New();
lightMonitor[i]->SetLightId(i);
lightMonitor[i]->Update();
lightMonitor[i]->Print(cerr);
}
cerr
<< "Matrices" << endl
<< "================" << endl;
vtkSmartPointer<vtkOpenGLModelViewProjectionMonitor> matrixMonitor
= vtkSmartPointer<vtkOpenGLModelViewProjectionMonitor>::New();
matrixMonitor->Update();
matrixMonitor->Print(cerr);
cerr
<< "Background Color" << endl
<< "================" << endl;
vtkSmartPointer<vtkBackgroundColorMonitor> backgroundColorMonitor
= vtkSmartPointer<vtkBackgroundColorMonitor>::New();
backgroundColorMonitor->Update(ren1);
backgroundColorMonitor->Print(cerr);
// update the scene so that lights, background color
// and modelview projection matrices are modified
ren1->SetBackground2(0.1, 0.2, 0.4);
ren1->SetGradientBackground(1);
light->SetFocalPoint(1.875,0.6125,0);
light->SetPosition(0.875,1.6125,1);
light2->SetFocalPoint(-100,-100,-100);
light2->SetPosition(100,100,100);
ren1->GetActiveCamera()->SetFocalPoint(0,0,0);
ren1->GetActiveCamera()->SetPosition(0,0,1);
ren1->GetActiveCamera()->SetViewUp(0,1,0);
ren1->GetActiveCamera()->ParallelProjectionOn();
ren1->ResetCamera();
ren1->GetActiveCamera()->SetParallelScale(1.5);
// push all of VTK state to OpenGL.
renWin->Render();
// verify that we can detect the changes
// in lighting
// in the modelview and projectionmatrices
// in the background color
// all should have been updated
cerr
<< "Lights" << endl
<< "================" << endl;
bool lightsChanged = false;
for (int i=0; i<nLights; ++i)
{
if (lightMonitor[i]->StateChanged())
{
cerr << "this light was changed..." << endl;
lightsChanged = true;
}
lightMonitor[i]->Print(cerr);
}
cerr
<< "Matrices" << endl
<< "================" << endl;
bool matricesChanged = matrixMonitor->StateChanged();
matrixMonitor->Print(cerr);
cerr
<< "Background Color" << endl
<< "================" << endl;
bool colorChanged = backgroundColorMonitor->StateChanged(ren1);
backgroundColorMonitor->Print(cerr);
cerr
<< "Test results" << endl
<< "================" << endl
<< "detected lights changed..." << (lightsChanged?"yes":"no") << endl
<< "detected matrices changed..." << (matricesChanged?"yes":"no") << endl
<< "detected background color changed..." << (colorChanged?"yes":"no") << endl
<< endl;
if (!(lightsChanged && matricesChanged && colorChanged))
{
cerr << "Test fails" << endl;
return 1;
}
cerr << "Test passes" << endl;
return 0;
}
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