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Thanks! Using merge did improve things but it really hurts rendering
time, as you said. A reliable and fast way to get rid of the problem
is to scale the second copy by .999 and thus eliminate any coincident
surfaces -- I had missed that there were still some of these.
Stuart
"Florian Brucker" <tor### [at] torfbold com> wrote in message
news:40cc6fbf$1@news.povray.org...
| > I am having some trouble with cylinder and sphere bounding boxes
| > becoming visible when viewed through a semi-transparent box. The
| > problem appears when I have two copies of some of the shapes that
| > are closely overlapped but not coincident. Increasing
| > max_trace_level did not help.
| Didn't look at your code, but if you got intersecting (semi-)
| transparent objects, try to merge them using
|
| merge {
| object { MyObject1 }
| object { MyObject2 }
| }
|
| this removes all inner surfaces. Be aware that it can increase render
| time, though.
|
| HTH,
| Florian
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