LightActor

VTKExamples/Cxx/Lighting/LightActor


Code

LightActor.cxx

#include <cstdlib>

#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkLightActor.h>
#include <vtkLight.h>
#include <vtkSmartPointer.h>
#include <vtkRenderWindowInteractor.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();

  // Display where the light is
  vtkSmartPointer<vtkLight> light = vtkSmartPointer<vtkLight>::New();
  light->SetPositional(true); // without this line, the program crashes
  vtkSmartPointer<vtkLightActor> lightActor = vtkSmartPointer<vtkLightActor>::New();
  lightActor->SetLight(light);
  renderer->AddViewProp(lightActor);

  vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);

  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
      vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(LightActor)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(LightActor MACOSX_BUNDLE LightActor.cxx )

target_link_libraries(LightActor ${VTK_LIBRARIES})

Download and Build LightActor

Click here to download LightActor and its CMakeLists.txt file. Once the tarball LightActor.tar has been downloaded and extracted,

cd LightActor/build 

If VTK is installed:

cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./LightActor

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.