Hi,
rossberg has left the following comment at Model BRL-CAD logo in BRL-CAD #4
https://www.google-melange.com/gci/task/view/google/gci2014/6383010643443712:
This is unfortunately not a ray-traces image
If you are doing a ray-trace (for example in archer: Raytrace->rt->512x512)
you get a black window only. But the boxes in the main window are looking
OK. So, what's wrong?
You are using the wrong operation for adding the boxes to regions: "+" will
give you the overlap (which is zero for all boxes), "u" would be the right
union-operation.
One easy way to fix this is converting the geometry to ASCII format
(g2ascii), replacing the + by u in the ASCII file, and converting the ASCII
back to the binary format (ascii2g).
Greetings,
The Google Open Source Programs Team
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