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Bonzai has an interesting brick arch macro here:
http://www.b0n541.net/povray/povmacro.html
Ross Litscher wrote:
> Okay, so i've got this image, and i was hoping to do a difference of the
> back wall (a union of these mesh bricks) with a cylinder-cube union to cut
> away the wall, leaving an archway. now the bricks in the wall are individual
> bricks, not a texture. the original brick was a rounded cube kind of thing i
> made in Ray Dream, then exported with 3dWin4 to pov format.
>
> i tried the difference, getting a warning message, but it proceeded to start
> rendering. at an insanely slow rate. So i was wondering, is there a way to
> keep the brick as a mesh, and use the cylinder-cube union object in some way
> to dictate where not to place a brick?
>
> on the other hand, if i use a regular primitive box object instead of a mesh
> for the bricks, i could do a difference that would be more successfull (in
> terms of rendering speed), right?
>
> btw, this is my first extensive use of handcoding. so be gentle :)
>
> gonna go post this question in the general forum too.
>
> thanks,
> ross
>
> [Image]
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