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Jan 22, 2003, 6:29pm

I am in need of two formulae. One to convert the directional light
source's x, y, z vector into spherical (azimuth and elevation) numbers.
The other formula is the reverse.

My math skills are a bit... lacking, so could you please give me
step-by-step instructions, preferably. Thanks.

I'm using C++, if someone has a code snippet to share. I could also
probably read a snippet in other programming languages as well, if need
be.

Thank you for your help,
Percipient.


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