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root/radiance/ray/src/cv/tilt.cal
Revision: 2.1
Committed: Tue Nov 12 17:02:15 1991 UTC (32 years, 8 months ago) by greg
Branch: MAIN
Changes since 1.1: +0 -0 lines
Log Message:
updated revision number for release 2.0

File Contents

# User Rev Content
1 greg 1.1 { SCCSid "$SunId$ LBL" }
2    
3     {
4     tilt.cal - tilt data for IES luminaires
5     }
6    
7     tilt_ang = Acos(Kz) / DEGREE;
8     tilt_xang = Asin(Jy/sqrt(Jy*Jy+Jz*Jz)) / DEGREE;
9    
10     tilt_ang2 = tri(tilt_ang, 90);
11     tilt_xang2 = tri(tilt_xang, 90);