Re: [ff3d-users] How to extract three boundary of a cylinder?

[Stephane Del Pino]

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On Tuesday 27 January 2004 16:39, Robert Li wrote:
> Dear Stephane Del Pino,
>
>   It seems that we can only use whole boundary(on
> surface or on <x,y,z> ) of an object, XYZ(min,max)
> boundary of structured3d mesh, and plane boundary(I
> think it does not work perfectly to extract plane of
> an object).
>   How to extract three boundary of a cylinder(two
> circle area and one cylinder area)?
You cannot do this. Each POV-Ray primitives defines a single boundary. If you 
want to define such boundary conditions, you have to define the intersection 
of a cylinder and two planes. AFAIK this is the only way to do it if you do 
not want to change POV-Ray language.
The idea is 1 color <=> 1 boundary.

Regards,
Stephane.
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