--- ray/src/util/genBSDF.pl 2012/02/17 00:14:46 2.29
+++ ray/src/util/genBSDF.pl 2012/02/20 04:54:49 2.31
@@ -1,5 +1,5 @@
#!/usr/bin/perl -w
-# RCSid $Id: genBSDF.pl,v 2.29 2012/02/17 00:14:46 greg Exp $
+# RCSid $Id: genBSDF.pl,v 2.31 2012/02/20 04:54:49 greg Exp $
#
# Compute BSDF based on geometry and material description
#
@@ -403,9 +403,9 @@ KprojOmega = PI * if(Kbin-.5,
$kcal = '
DEGREE : PI/180;
abs(x) : if(x, x, -x);
-Acos(x) : 1/DEGREE * if(x-1, 0, if(-1-x, 0, acos(x)));
+Acos(x) : if(x-1, 0, if(-1-x, PI, acos(x))) / DEGREE;
posangle(a) : if(-a, a + 2*PI, a);
-Atan2(y,x) : 1/DEGREE * posangle(atan2(y,x));
+Atan2(y,x) : posangle(atan2(y,x)) / DEGREE;
kpola(r) : select(r, 5, 15, 25, 35, 45, 55, 65, 75, 90);
knaz(r) : select(r, 1, 8, 16, 20, 24, 24, 24, 16, 12);
kaccum(r) : if(r-.5, knaz(r) + kaccum(r-1), 0);
@@ -584,10 +584,10 @@ print
BRDF
';
-# Output front reflection (reciprocity averaging)
+# Output front reflection (transposed order)
for (my $od = 0; $od < $ndiv; $od++) {
for (my $id = 0; $id < $ndiv; $id++) {
- print .5*($rfarr[$ndiv*$id + $od] + $rfarr[$ndiv*$od + $id]), ",\n";
+ print $rfarr[$ndiv*$id + $od], ",\n";
}
print "\n";
}
@@ -637,7 +637,7 @@ print
# Output back reflection (reciprocity averaging)
for (my $od = 0; $od < $ndiv; $od++) {
for (my $id = 0; $id < $ndiv; $id++) {
- print .5*($rbarr[$ndiv*$id + $od] + $rbarr[$ndiv*$od + $id]), ",\n";
+ print $rbarr[$ndiv*$id + $od], ",\n";
}
print "\n";
}