--- ray/src/util/genBSDF.pl 2011/02/21 22:48:51 2.9
+++ ray/src/util/genBSDF.pl 2011/04/16 01:13:22 2.14
@@ -1,18 +1,20 @@
#!/usr/bin/perl -w
-# RCSid $Id: genBSDF.pl,v 2.9 2011/02/21 22:48:51 greg Exp $
+# RCSid $Id: genBSDF.pl,v 2.14 2011/04/16 01:13:22 greg Exp $
#
# Compute BSDF based on geometry and material description
#
# G. Ward
#
use strict;
+use File::Temp qw/ :mktemp /;
sub userror {
- print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-dim xmin xmax ymin ymax zmin zmax][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom] [input ..]\n";
+ print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-r \"ropts\"][-dim xmin xmax ymin ymax zmin zmax][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom] [input ..]\n";
exit 1;
}
-my $td = `mktemp -d /tmp/genBSDF.XXXXXX`;
+my $td = mkdtemp("/tmp/genBSDF.XXXXXX");
chomp $td;
my $nsamp = 1000;
+my $rtargs = "-w -ab 5 -ad 700 -lw 3e-6";
my $mgfin = 0;
my $geout = 1;
my $nproc = 1;
@@ -23,6 +25,9 @@ my @dim;
while ($#ARGV >= 0) {
if ("$ARGV[0]" =~ /^[-+]m/) {
$mgfin = ("$ARGV[0]" =~ /^\+/);
+ } elsif ("$ARGV[0]" eq "-r") {
+ $rtargs = "$rtargs $ARGV[1]";
+ shift @ARGV;
} elsif ("$ARGV[0]" =~ /^[-+]g/) {
$geout = ("$ARGV[0]" =~ /^\+/);
} elsif ("$ARGV[0]" =~ /^[-+]f/) {
@@ -57,7 +62,7 @@ if ( $mgfin ) {
die "Could not load MGF input\n" if ( $? );
system "mgf2rad $mgfscn > $radscn";
} else {
- system "cat @ARGV | xform -e > $radscn";
+ system "xform -e @ARGV > $radscn";
die "Could not load Radiance input\n" if ( $? );
system "rad2mgf $radscn > $mgfscn" if ( $geout );
}
@@ -66,21 +71,13 @@ if ($#dim != 5) {
}
print STDERR "Warning: Device extends into room\n" if ($dim[5] > 1e-5);
# Add receiver surfaces (rectangular)
-my $bmodnm="receiver_behind";
my $fmodnm="receiver_face";
+my $bmodnm="receiver_behind";
open(RADSCN, ">> $radscn");
-print RADSCN "void glow $fmodnm\n0\n0\n4 0 0 0 0\n\n";
-print RADSCN "$fmodnm polygon f_receiver\n0\n0\n12\n";
-print RADSCN "\t",$dim[0],"\t",$dim[2],"\t",$dim[5]+2e-5,"\n";
-print RADSCN "\t",$dim[0],"\t",$dim[3],"\t",$dim[5]+2e-5,"\n";
-print RADSCN "\t",$dim[1],"\t",$dim[3],"\t",$dim[5]+2e-5,"\n";
-print RADSCN "\t",$dim[1],"\t",$dim[2],"\t",$dim[5]+2e-5,"\n";
-print RADSCN "void glow $bmodnm\n0\n0\n4 0 0 0 0\n\n";
-print RADSCN "$bmodnm polygon b_receiver\n0\n0\n12\n";
-print RADSCN "\t",$dim[1],"\t",$dim[2],"\t",$dim[4]-2e-5,"\n";
-print RADSCN "\t",$dim[1],"\t",$dim[3],"\t",$dim[4]-2e-5,"\n";
-print RADSCN "\t",$dim[0],"\t",$dim[3],"\t",$dim[4]-2e-5,"\n";
-print RADSCN "\t",$dim[0],"\t",$dim[2],"\t",$dim[4]-2e-5,"\n";
+print RADSCN "void glow $fmodnm\n0\n0\n4 1 1 1 0\n\n";
+print RADSCN "$fmodnm source f_receiver\n0\n0\n4 0 0 1 180\n";
+print RADSCN "void glow $bmodnm\n0\n0\n4 1 1 1 0\n\n";
+print RADSCN "$bmodnm source b_receiver\n0\n0\n4 0 0 -1 180\n";
close RADSCN;
# Generate octree
system "oconv -w $radscn > $octree";
@@ -110,6 +107,7 @@ KprojOmega = PI * if(Kbin-.5,
# Compute Klems bin from exiting ray direction (forward or backward)
my $kcal = '
DEGREE : PI/180;
+abs(x) : if(x, x, -x);
Acos(x) : 1/DEGREE * if(x-1, 0, if(-1-x, 0, acos(x)));
posangle(a) : if(-a, a + 2*PI, a);
Atan2(y,x) : 1/DEGREE * posangle(atan2(y,x));
@@ -130,7 +128,7 @@ kbin2(pol,azi) = select(kfindrow(1, pol),
kaccum(7) + kazn(azi,360/knaz(8)),
kaccum(8) + kazn(azi,360/knaz(9))
);
-kbin = if(Dz, kbin2(Acos(Dz),Atan2(Dy,Dx)), kbin2(Acos(-Dz),Atan2(-Dy,-Dx)));
+kbin = kbin2(Acos(abs(Dz)),Atan2(Dy,Dx));
';
my $ndiv = 145;
my $nx = int(sqrt($nsamp*($dim[1]-$dim[0])/($dim[3]-$dim[2])) + .5);
@@ -142,7 +140,6 @@ my @rfarr;
my @tbarr;
my @rbarr;
my $cmd;
-my $rtargs = "-w -ab 5 -ad 700 -lw 3e-6";
my $rtcmd = "rtcontrib -h -ff -fo -n $nproc -c $nsamp " .
"-e '$kcal' -b kbin -bn $ndiv " .
"-o '$td/%s.flt' -m $fmodnm -m $bmodnm $rtargs $octree";
@@ -151,11 +148,11 @@ my $rccmd = "rcalc -e '$tcal' " .
q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega'};
if ( $doforw ) {
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " .
- "-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " .
- "-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " .
- "-e 'zp:$dim[4]-1e-5' " .
- q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } .
- q{-e '$1=xp;$2=yp;$3=zp;$4=Dx;$5=Dy;$6=Dz' } .
+ "-e 'xp=(\$3+rand(.12*recno+288))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " .
+ "-e 'yp=(\$2+rand(.37*recno-44))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " .
+ "-e 'zp:$dim[4]' " .
+ q{-e 'Kbin=$1;x1=rand(2.75*recno+3.1);x2=rand(-2.01*recno-3.37)' } .
+ q{-e '$1=xp-Dx;$2=yp-Dy;$3=zp-Dz;$4=Dx;$5=Dy;$6=Dz' } .
"| $rtcmd";
system "$cmd" || die "Failure running: $cmd\n";
@tfarr = `$rccmd $td/$fmodnm.flt`;
@@ -167,9 +164,9 @@ if ( $doback ) {
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " .
"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " .
"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " .
- "-e 'zp:$dim[5]+1e-5' " .
+ "-e 'zp:$dim[5]' " .
q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } .
- q{-e '$1=xp;$2=yp;$3=zp;$4=-Dx;$5=-Dy;$6=-Dz' } .
+ q{-e '$1=xp-Dx;$2=yp-Dy;$3=zp+Dz;$4=Dx;$5=Dy;$6=-Dz' } .
"| $rtcmd";
system "$cmd" || die "Failure running: $cmd\n";
@tbarr = `$rccmd $td/$bmodnm.flt`;
@@ -196,7 +193,9 @@ print "\t\t\tIntegral\n";
if ( $geout ) {
print "\t\t\t\n";
printf "xf -t %.6f %.6f 0\n", -($dim[0]+$dim[1])/2, -($dim[2]+$dim[3])/2;
- system "cat $mgfscn";
+ open(MGFSCN, "< $mgfscn");
+ while () { print $_; }
+ close MGFSCN;
print "xf\n";
print "\t\t\t\n";
}