[vtkusers] Strange problem - All of my triangle mesh is not displayed (Bug? )

[Farshid Dehmeshki]

hi;
I think you should set clipping range for your camera , have you done it?
Camera->SetClippingRange(....,....);
 
 

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Farshid  Dehmeshki 
Software Engineer
Medicsight Plc
46 Berkeley Square
London
W1J 5AT
Tel : 020 7598 4074
Fax: 020 7598 4071
Email : farshid.dehmeshki at medicsight.com
Web Site : www.medicsight.com 
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-----Original Message-----
From: Karlsson Erik [mailto:erik.karlsson at optronic.se]
Sent: Thursday, February 06, 2003 3:28 PM
To: 'vtkusers at public.kitware.com'
Subject: [vtkusers] Strange problem - All of my triangle mesh is not displayed (Bug? )



Hi all! 
I have a really strange problem. I have about 500 000 points and I use a vtkCellArray to make a triangle mesh that I put in a vtkPolyData object. When I render my scene the bottom of my object is not showing. The strange thing is that if I use a vtkLODActor instead of a normal actor, I can see the missing part of my mesh when the whole actor is shown as a point could while rotating/zooming the object. So I know for a fact that all the points have been inserted to the PolyData object.  But as soon as I stop interacting with the scene and the object is rendered with triangles again, the bottom disappears. I also tried using the vtkDecimatePro to decimate the PolyData object about 10% and now I can see all of my triangles. Is there some kind of a limit to the number of triangles that can be displayed or the number of points that can be used? Can it be a hardware issue? Does anyone have the slightest idea?

Can someone please help me shed I light on this - I have been struggling with this problem for about a week now... :-/ 
By the way - I'm using vtk 4.02, MSVC++ 6.0 MFC. My graphics card is a Geforce2 MX (latest drivers) 

Thanks in advance! 

Best regards, 
Erik Karlsson 

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