src/cv/tilt.cal

{ RCSid: $Id$ }
{
        tilt.cal - tilt data for IES luminaires
}

tilt_ang = Acos(Kz) / DEGREE;
tilt_xang = if(Jy*Jy-FTINY, Asin(Jy/sqrt(Jy*Jy+Jz*Jz))/DEGREE, 0);

tilt_ang2 = tri(tilt_ang, 90);
tilt_xang2 = tri(tilt_xang, 90);
Revision:	2.3
Committed:	Sat Feb 22 02:07:23 2003 UTC (21 years, 7 months ago) by greg
Branch:	MAIN
CVS Tags:	rad5R4, rad5R2, rad4R2P2, rad5R0, rad5R1, rad3R7P2, rad3R7P1, rad4R2, rad4R1, rad4R0, rad3R5, rad3R6, rad3R6P1, rad3R8, rad3R9, rad4R2P1, rad5R3, HEAD
Changes since 2.2:	+1 -2 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	Content
1	{ RCSid: $Id$ }
2	{
3	tilt.cal - tilt data for IES luminaires
4	}
5
6	tilt_ang = Acos(Kz) / DEGREE;
7	tilt_xang = if(JyJy-FTINY, Asin(Jy/sqrt(JyJy+Jz*Jz))/DEGREE, 0);
8
9	tilt_ang2 = tri(tilt_ang, 90);
10	tilt_xang2 = tri(tilt_xang, 90);