On Thu, 3 Jan 2002 17:37:06 +0100, Johannes Bretscher wrote:

>> On Thu, 3 Jan 2002 13:46:04 +0100, Johannes Bretscher <bre### [at] 5slorg> wrote:
>>> Is it possible to delete some triangles from tihs mesh, i.e. to cut a hole
>>> in the generatet surface?
>> there is many ways to do it. it depend what your hole is and what your object is
>> check clipped_by{}, bounded_by{}, difference{}, intersection{}
> 
> So CSG can be used with a mesh. That was the hint I needet. I thought
> only solid objects are.

That's true.  You can only use union with non-solid objects.   You can still
use clipped_by, though, as long as the clipping object has an inside.

-- 
#local R=rgb 99;#local P=R-R;#local F=pigment{gradient x}box{0,1pigment{gradient
y pigment_map{[.5F pigment_map{[.3R][.3F color_map{[.15red 99][.15P]}rotate z*45
translate x]}]#local H=pigment{gradient y color_map{[.5P][.5R]}scale 1/3}[.5F
pigment_map{[.3R][.3H][.7H][.7R]}]}}}camera{location.5-3*z}//only my opinions

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