"BoudewijnDocter" <nomail@nomail> wrote in message 
news:web.48772d6758ea35f669b634a70@news.povray.org...
> Hi,
>
> I'm having trouble using the cutaway_textures feature when trying to cut
> something with a complex csg. The following simplified code illustrates my
> problem:
>
> #include "colors.inc"
>
> camera {location <3,4,-4> look_at 0 }
> light_source {<10,20,-5>, rgb 3}
>
> #declare MyObject = union {
>  box {<-1,-1,-1>,<1,0,1> pigment {Red} }
>  box {<-1,0,-1>,<1,1,1> pigment {Blue}}
> }
>
> #declare MyCuttingObject = difference {
>  cylinder {<0,-2,0>,<0,2,0>,1}
>  box {<0,-3,-1>,<1,3,0>}

*** Add  pigment {Yellow} here  ***

> }
>
> difference {
>  object {MyObject}
>  object {MyCuttingObject   *** or here ***}
>  cutaway_textures
> }
>
> I've got two colored boxes on top of each other, which I want to cut with 
> an
> object that is a construction of two objects. Obviously I would like to 
> see the
> colors inside the cut, hence the cutaway_textures, but this doesn't seem 
> to
> work. Is there anyone who has the golden tip?
>
> Thanks!
>
> Boud
>

Your cutting object doesn't currently have a texture defined for it, so it 
comes out black. If you add a pigment it should work.

Regards,
Chris B.

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