> I am attempting to simulate an x-ray using the material light attenuation
> ability in POV-Ray. Unforutunatly I am getting an odd "aurora" around parts that
> are intersecting one another, like this experiment:
>
> http://img844.imageshack.us/i/22952805.png/
>
> I want it to look more like this (one part is located behind the other instead
> of intersecting):
>
> http://img291.imageshack.us/i/99583176.png/
>
> This intersection is unavoidible as my final images require hardware to be
> placed inside of bones.  The models are all CAD models imported into POV-Ray
> using Rhino. I was wondering if anyone had any solutions or suggestions for my
> "aurora" issue.
>
> Thanks.
>
>

Try shifting one object by a small value, like 0.0001 unit. You may have 
some coincident surfaces and the small shifting will separate those. You 
may instead need to scale one object up or down by a small value like 
1.000001 or 0.999999.

As warp daid, try increasing max_trace_level.

You can also try scaling everything up by, say, a factor of 10 (model in 
mm instead of cm).


Try using a merge to remove internal surfaces, where that's acceptable. 
I suspect that it may not always be acceptable in your case, you 
possibly need those surfaces. But try it anyway for the various parts of 
a single object.



Alain

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