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None Re: Optical problem with geometry subtraction 

Keywords: optical photon boolean subtraction
Forum: Processes Involving Optical Photons
Re: None Re: Optical problem with geometry subtraction (Vladimir Grichine)
Date: 02 Mar, 2007
From: Whitney Armstrong <whit@temple.edu>

OK you can find my code and some images again at http://astro.temple.edu/~whit/mirror/

I did perform a subtraction of two solid spheres to make a shell like you asked and interestingly, they did not work (the photons passed right through, see http://astro.temple.edu/~whit/mirror/sphericalmirrorNoIntersection.jpg). However, once i performed an intersection with a box to pull out the part that I want for my simulation, it worked!!! (see http://astro.temple.edu/~whit/mirror/sphericalmirrorWithIntersection.jpg).

Then I performed the same thing using two ellipsoids instead of sphere. The result after the intersection was NOT the same (see http://astro.temple.edu/~whit/mirror/ellipticalmirrorWithIntersection.jpg).

The code is posted there as well. The lines of interest are 433 to 477 in the detector construction.

Thanks Again.

-Whitney

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