vtkProperty and Boolean operations

[Lisa S. Avila]

Hello Case,

This is a bug in the code that determines whether to rebuild the display 
lists (it detects that the property has not been modified, but it misses 
the fact that the property is not the same one it used to build the display 
list). For now, you can simply turn ImmediateModeRenderingOn on the mapper, 
which then won't use display lists. I'll fix the problem tomorrow so it 
will show up in the nightly release on Wednesday.

Lisa

On Monday, July 26, 1999 9:11 AM, Case [SMTP:neuromancer at lineone.net] 
wrote:
> Hi guys.
>
> I am writing a 3D polygonal modeller, with a view to simulating surgery 
procedures.
> Sometimes I require an actor to be viewed as a solid object sometimes as 
a wireframe mesh.
> I am using two vtkProperty objects to make the change when necessary.
> The code is (roughly, i think):
>
> / /wireframe required:
> myActor->SetProperty(wireprop)
> // Solid required:
> myActor->SetProperty(prevprop)
>
> where:
> wireprop->SetRepresentationToWireframe
> prevprop->SetRepresentationToSurface
>
> All properties (surface colour etc) update ok when the properties are 
swapped but the representation always stays the same (ie if wireframe 
property is initially used actor is always in wireframe mode). Is this a 
bug in vtkProperty or have I screwed up the code?? btw i am using vtk 2.2
>
> Also, I need to be able to perform boolean subtractions on polygonal 
objects. As far as I am aware, there is no filter in vtk that will allow me 
to subtract one polygonal model from another. Has anyone implemented such a 
thing??
>
> Thanks in advance,
> Case
>
>  << File: ATT00006.htm >> 


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