src/cv/tilt.cal

{ SCCSid "$SunId$ LBL" }

{
        tilt.cal - tilt data for IES luminaires
}

tilt_ang = Acos(Kz) / DEGREE;
tilt_xang = Asin(Jy/sqrt(Jy*Jy+Jz*Jz)) / DEGREE;

tilt_ang2 = tri(tilt_ang, 90);
tilt_xang2 = tri(tilt_xang, 90);
Revision:	1.1
Committed:	Thu Aug 22 08:43:47 1991 UTC (32 years, 8 months ago) by greg
Branch:	MAIN
Log Message:	Initial revision
#	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(JyJy+JzJz)) / DEGREE;
9
10			tilt_ang2 = tri(tilt_ang, 90);
11			tilt_xang2 = tri(tilt_xang, 90);