vtkRenderer creates a vtkLight?

[Jan Stifter]

dear vtkusers,

following code:

   this->renderWindow = vtkRenderWindow::New();
   this->renderer = vtkRenderer::New();
   this->renderWindow->AddRenderer( this->renderer );

   // get the light we are using
   vtkLightCollection *lightCollection;
   lightCollection = this->renderer->GetLights();

   // get output from lightCollection
   vtkIndent *v = vtkIndent::New();
   lightCollection->PrintSelf( cout, *v );

the output from this code:

Debug: Off
No Delete Method
Modified Time: 22
Reference Count: 1
Number Of Items: 0

why "Number Of Items: 0"? this is strange to me, since i can render an
object and there seems to be a light (otherwise it would be dark). how
can i get this active light?

also i tried:

   this->renderWindow = vtkRenderWindow::New();
   this->renderer = vtkRenderer::New();
   this->renderWindow->AddRenderer( this->renderer );
   cout << "here we crash" << endl;
   this->renderer->CreateLight();

the code crashes in the CreateLight cmd. i did not debug the
vtkRenderer-code until now, so i can not say, where it crashes.

many thanks for answers
jan



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