--- ray/src/util/klems_half.cal 2015/03/27 18:58:06 1.3 +++ ray/src/util/klems_half.cal 2022/07/14 02:52:02 1.5 @@ -1,4 +1,4 @@ -{ RCSid $Id: klems_half.cal,v 1.3 2015/03/27 18:58:06 greg Exp $ } +{ RCSid $Id: klems_half.cal,v 1.5 2022/07/14 02:52:02 greg Exp $ } { Compute interior bin for half Klems BSDF basis (0-72) Returns -1 for wrong-side rays @@ -12,8 +12,8 @@ Acos(x) : if(x-1, 0, if(-1-x, PI, acos(x))) / DEGREE; posangle(a) : if(-a, a + 2*PI, a) / DEGREE; Atan2(y,x) : posangle(atan2(y,x)); -khpola(r) : select(r, 6.5, 19.5, 32.5, 46.5, 61.5, 76.5, 90); -khnaz(r) : select(r, 1, 8, 12, 16, 20, 12, 4); +khpola(r) : select(r, 6.5, 19.5, 32.5, 45.5, 58.5, 71.5, 90); +khnaz(r) : select(r, 1, 8, 12, 16, 20, 12, 8); khaccum(r) : if(r-.5, khnaz(r) + khaccum(r-1), 0); khfindrow(r, pol) : if(r-khpola(0)+.5, r, if(pol-khpola(r), khfindrow(r+1, pol), r) ); @@ -28,8 +28,7 @@ khbin2(pol,azi) = if(pol-90, -1, khaccum(3) + khazn(azi,360/khnaz(4)), khaccum(4) + khazn(azi,360/khnaz(5)), khaccum(5) + khazn(azi,360/khnaz(6)), - khaccum(6) + khazn(azi,360/khnaz(7)), - khaccum(7) + khazn(azi,360/khnaz(8)) + khaccum(6) + khazn(azi,360/khnaz(7)) ) ); RHS = 1; { set to -1 for left-handed system }