[vtkusers] Fog ?

[Schaap, J.A. (LKEB)]

First set up the renderwindow as usual, like:

  vtkRenderer *ren = vtkRenderer::New();
  vtkRenderWindow *renWindow = vtkRenderWindow::New();

  renWindow->AddRenderer(ren);
  renWindow->Render();

Then make the OpenGL call, like:

  glEnable(GL_FOG); 
  glFogf(GL_FOG_MODE, GL_EXP2);  //use a nice exp2 mode
  glFogf(GL_FOG_DENSITY, 0.2);  // you can vary the density


And then just continue to set up your rendering pipeline.

You can switch on and off the fog, but make sure that the renderwindow is the current window by calling renWindow->Render(); and then glEnable(GL_FOG); or glDisable(GL_FOG);


Good luck! 

Jorrit








18-3-2002 21:46:28, Karl Krissian <karl at bwh.harvard.edu> wrote:

>
>
>  From:   Karl Krissian <karl at bwh.harvard.edu>
>
>  To:     vtkusers at public.kitware.com
>  Subject:[vtkusers] Fog ?
>  Date:   Mon, 18 Mar 2002 15:46:28 -0500
>
>
>
>  Dear VTK users, 
>
>  I am a new VTK user 
>  and I would like to know if there is an elegant way to 
>  use the OpenGL  fog  effect with vtk 3.2. 
>
>
>  Thanks 
>
>  --
>  Karl Krissian
>  http://splweb.bwh.harvard.edu:8000/pages/ppl/karl
>  Tel: (+1) 617-842-7778
>  Fax: (+1) 617-264-6887