[vtkusers] Visible-surface determination

David Gobbi dgobbi at irus.rri.ca
Tue Jun 18 15:20:18 EDT 2002

Hi Simon,

The problem is probably not that the floor 'jumps in front of' the
roof, it is more likely that the roof is positioned in front of the
near clipping plane and is not being rendered.
If you do a ResetCameraClippingPlanes before each render the problem
should go away (as long as roof does not end up behind the camera).

 - David

  David Gobbi, MSc                       dgobbi at irus.rri.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

On Tue, 18 Jun 2002, Simon Faust wrote:

> Hi,
> I use vtkTkRenderWidget in order to display several objects that
> alltogether form a building with some installations in it. Problem ist
> that objects that should not be visible (i.e. the floor of a room when
> your viewpoint is over the roof) "jump" into the foreground and overlay
> objects that should be visible. The error occurs when rotating or
> zooming around/in the scene. Any hints welcome.
> Simon
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