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Text File  |  1991-11-12  |  245 b   |  12 lines
  1. { SCCSid "@(#)tilt.cal 2.1 11/12/91 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);
  12.