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

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