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#!/usr/bin/perl -w |
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# RCSid $Id: genBSDF.pl,v 2.79 2018/04/17 18:11:17 greg Exp $ |
3 |
# |
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# Compute BSDF based on geometry and material description |
5 |
# |
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# G. Ward |
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# |
8 |
use strict; |
9 |
my $windoz = ($^O eq "MSWin32" or $^O eq "MSWin64"); |
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use File::Temp qw/ :mktemp /; |
11 |
sub userror { |
12 |
print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-W][-t{3|4} Nlog2][-r \"ropts\"][-s \"x=string;y=string\"][-dim xmin xmax ymin ymax zmin zmax][{+|-}C][{+|-}a][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom units] [input ..]\n"; |
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exit 1; |
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} |
15 |
my ($td,$radscn,$mgfscn,$octree,$fsender,$bsender,$receivers,$facedat,$behinddat,$rmtmp); |
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my ($tf,$rf,$tb,$rb,$tfx,$rfx,$tbx,$rbx,$tfz,$rfz,$tbz,$rbz,$cph); |
17 |
my ($curphase, $recovery); |
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if ($#ARGV == 1 && "$ARGV[0]" =~ /^-rec/) { |
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$td = $ARGV[1]; |
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open(MYAVH, "< $td/savedARGV.txt") or die "$td: invalid path\n"; |
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@ARGV = <MYAVH>; |
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close MYAVH; |
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chomp @ARGV; |
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$recovery = 0; |
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if (open(MYPH, "< $td/phase.txt")) { |
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while (<MYPH>) { |
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chomp($recovery = $_); |
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} |
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close MYPH; |
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} |
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} elsif ($windoz) { |
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my $tmploc = `echo \%TMP\%`; |
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chomp $tmploc; |
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$td = mkdtemp("$tmploc\\genBSDF.XXXXXX"); |
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} else { |
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$td = mkdtemp("/tmp/genBSDF.XXXXXX"); |
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chomp $td; |
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} |
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if ($windoz) { |
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$radscn = "$td\\device.rad"; |
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$mgfscn = "$td\\device.mgf"; |
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$octree = "$td\\device.oct"; |
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$fsender = "$td\\fsender.rad"; |
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$bsender = "$td\\bsender.rad"; |
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$receivers = "$td\\receivers.rad"; |
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$facedat = "$td\\face.dat"; |
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$behinddat = "$td\\behind.dat"; |
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$tf = "$td\\tf.dat"; |
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$rf = "$td\\rf.dat"; |
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$tb = "$td\\tb.dat"; |
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$rb = "$td\\rb.dat"; |
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$tfx = "$td\\tfx.dat"; |
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$rfx = "$td\\rfx.dat"; |
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$tbx = "$td\\tbx.dat"; |
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$rbx = "$td\\rbx.dat"; |
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$tfz = "$td\\tfz.dat"; |
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$rfz = "$td\\rfz.dat"; |
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$tbz = "$td\\tbz.dat"; |
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$rbz = "$td\\rbz.dat"; |
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$cph = "$td\\phase.txt"; |
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$rmtmp = "rd /S /Q $td"; |
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} else { |
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$radscn = "$td/device.rad"; |
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$mgfscn = "$td/device.mgf"; |
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$octree = "$td/device.oct"; |
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$fsender = "$td/fsender.rad"; |
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$bsender = "$td/bsender.rad"; |
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$receivers = "$td/receivers.rad"; |
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$facedat = "$td/face.dat"; |
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$behinddat = "$td/behind.dat"; |
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$tf = "$td/tf.dat"; |
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$rf = "$td/rf.dat"; |
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$tb = "$td/tb.dat"; |
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$rb = "$td/rb.dat"; |
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$tfx = "$td/tfx.dat"; |
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$rfx = "$td/rfx.dat"; |
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$tbx = "$td/tbx.dat"; |
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$rbx = "$td/rbx.dat"; |
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$tfz = "$td/tfz.dat"; |
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$rfz = "$td/rfz.dat"; |
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$tbz = "$td/tbz.dat"; |
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$rbz = "$td/rbz.dat"; |
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$cph = "$td/phase.txt"; |
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$rmtmp = "rm -rf $td"; |
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} |
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my @savedARGV = @ARGV; |
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my $rfluxmtx = "rfluxmtx -ab 5 -ad 700 -lw 3e-6 -w-"; |
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my $wrapper = "wrapBSDF"; |
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my $tensortree = 0; |
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my $ttlog2 = 4; |
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my $dorecip = 1; |
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my $nsamp = 2000; |
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my $mgfin = 0; |
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my $geout = 1; |
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my $nproc = 1; |
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my $docolor = 0; |
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my $doforw = 0; |
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my $doback = 1; |
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my $pctcull = 90; |
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my $gunit = "meter"; |
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my $curspec = "Visible"; |
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my @dim; |
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# Get options |
104 |
while ($#ARGV >= 0) { |
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if ("$ARGV[0]" =~ /^[-+]m/) { |
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$mgfin = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" eq "-r") { |
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$rfluxmtx .= " $ARGV[1]"; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" =~ /^[-+]g/) { |
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$geout = ("$ARGV[0]" =~ /^\+/); |
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$gunit = $ARGV[1]; |
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if ($gunit !~ /^(?i)(meter|foot|inch|centimeter|millimeter)$/) { |
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die "Illegal geometry unit '$gunit': must be meter, foot, inch, centimeter, or millimeter\n"; |
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} |
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shift @ARGV; |
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} elsif ("$ARGV[0]" =~ /^[-+]C/) { |
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$docolor = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" =~ /^[-+]a/) { |
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$dorecip = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" =~ /^[-+]f/) { |
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$doforw = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" =~ /^[-+]b/) { |
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$doback = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" eq "-t") { |
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# Use value < 0 for rttree_reduce bypass |
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$pctcull = $ARGV[1]; |
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if ($pctcull >= 100) { |
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die "Illegal -t culling percentage, must be < 100\n"; |
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} |
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shift @ARGV; |
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} elsif ("$ARGV[0]" =~ /^-t[34]$/) { |
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$tensortree = substr($ARGV[0], 2, 1); |
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$ttlog2 = $ARGV[1]; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" eq "-s") { |
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$wrapper .= " -f \"$ARGV[1]\""; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" eq "-W") { |
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$wrapper .= " -W"; |
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} elsif ("$ARGV[0]" eq "-c") { |
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$nsamp = $ARGV[1]; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" eq "-n") { |
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$nproc = $ARGV[1]; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" =~ /^-d/) { |
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userror() if ($#ARGV < 6); |
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@dim = @ARGV[1..6]; |
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shift @ARGV for (1..6); |
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} elsif ("$ARGV[0]" =~ /^[-+]./) { |
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userror(); |
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} else { |
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last; |
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} |
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shift @ARGV; |
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} |
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# Check that we're actually being asked to do something |
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die "Must have at least one of +forward or +backward\n" if (!$doforw && !$doback); |
160 |
$wrapper .= $tensortree ? " -a t$tensortree" : " -a kf -c"; |
161 |
$wrapper .= " -u $gunit"; |
162 |
if ( !defined $recovery ) { |
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# Issue warning for unhandled reciprocity case |
164 |
print STDERR "Warning: recommend both +forward and +backward with -t3\n" if |
165 |
($tensortree==3 && !($doforw && $doback)); |
166 |
# Get scene description |
167 |
if ( $mgfin ) { |
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system "mgf2rad @ARGV > $radscn"; |
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die "Could not load MGF input\n" if ( $? ); |
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} else { |
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system "xform -e @ARGV > $radscn"; |
172 |
die "Could not load Radiance input\n" if ( $? ); |
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} |
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} |
175 |
if ( $#dim != 5 ) { |
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@dim = split ' ', `getbbox -h -w $radscn`; |
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} |
178 |
die "Device entirely inside room!\n" if ( $dim[4] >= 0 ); |
179 |
if ( $dim[5] > 1e-5 ) { |
180 |
print STDERR "Warning: Device extends into room\n"; |
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} elsif ( $dim[5]*$dim[5] > .01*($dim[1]-$dim[0])*($dim[3]-$dim[2]) ) { |
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print STDERR "Warning: Device far behind Z==0 plane\n"; |
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} |
184 |
# Assume Zmax==0 to derive thickness so pkgBSDF will work |
185 |
$wrapper .= ' -f "t=' . (-$dim[4]) . ';w=' . ($dim[1] - $dim[0]) . |
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';h=' . ($dim[3] - $dim[2]) . '"'; |
187 |
$wrapper .= " -g $mgfscn" if ( $geout ); |
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# Calculate CIE (u',v') from Radiance RGB: |
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my $CIEuv = 'Xi=.5141*Ri+.3239*Gi+.1620*Bi;' . |
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'Yi=.2651*Ri+.6701*Gi+.0648*Bi;' . |
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'Zi=.0241*Ri+.1229*Gi+.8530*Bi;' . |
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'den=Xi+15*Yi+3*Zi;' . |
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'uprime=if(Yi,4*Xi/den,4/19);' . |
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'vprime=if(Yi,9*Yi/den,9/19);' ; |
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my $FEPS = 1e-5; |
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my $ns = 2**$ttlog2; |
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my $nx = int(sqrt($nsamp*($dim[1]-$dim[0])/($dim[3]-$dim[2])) + 1); |
198 |
my $ny = int($nsamp/$nx + 1); |
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$nsamp = $nx * $ny; |
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$rfluxmtx .= " -n $nproc -c $nsamp"; |
201 |
if ( !defined $recovery ) { |
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open(MYAVH, "> $td/savedARGV.txt"); |
203 |
foreach (@savedARGV) { |
204 |
print MYAVH "$_\n"; |
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} |
206 |
close MYAVH; |
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# Generate octree |
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system "oconv -w -f $radscn > $octree"; |
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die "Could not compile scene\n" if ( $? ); |
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# Add MGF description if requested |
211 |
if ( $geout ) { |
212 |
open(MGFSCN, "> $mgfscn"); |
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printf MGFSCN "xf -t %.6f %.6f 0\n", -($dim[0]+$dim[1])/2, -($dim[2]+$dim[3])/2; |
214 |
close MGFSCN; |
215 |
if ( $mgfin ) { |
216 |
system qq{mgfilt "#,o,xf,c,cxy,cspec,cmix,m,sides,rd,td,rs,ts,ir,v,p,n,f,fh,sph,cyl,cone,prism,ring,torus" @ARGV >> $mgfscn}; |
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} else { |
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system "rad2mgf $radscn >> $mgfscn"; |
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} |
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open(MGFSCN, ">> $mgfscn"); |
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print MGFSCN "xf\n"; |
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close MGFSCN; |
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} |
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# Create receiver & sender surfaces (rectangular) |
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open(RADSCN, "> $receivers"); |
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print RADSCN '#@rfluxmtx ' . ($tensortree ? "h=-sc$ns\n" : "h=-kf\n"); |
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print RADSCN '#@rfluxmtx ' . "u=-Y o=$facedat\n\n"; |
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print RADSCN "void glow receiver_face\n0\n0\n4 1 1 1 0\n\n"; |
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print RADSCN "receiver_face source f_receiver\n0\n0\n4 0 0 1 180\n\n"; |
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print RADSCN '#@rfluxmtx ' . ($tensortree ? "h=+sc$ns\n" : "h=+kf\n"); |
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print RADSCN '#@rfluxmtx ' . "u=-Y o=$behinddat\n\n"; |
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print RADSCN "void glow receiver_behind\n0\n0\n4 1 1 1 0\n\n"; |
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print RADSCN "receiver_behind source b_receiver\n0\n0\n4 0 0 -1 180\n"; |
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close RADSCN; |
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# Prepare sender surfaces |
236 |
if ( $tensortree != 3 ) { # Isotropic tensor tree is exception |
237 |
open (RADSCN, "> $fsender"); |
238 |
print RADSCN '#@rfluxmtx u=-Y ' . ($tensortree ? "h=-sc$ns\n\n" : "h=-kf\n\n"); |
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print RADSCN "void polygon fwd_sender\n0\n0\n12\n"; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[0], $dim[2], $dim[4]-$FEPS; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[0], $dim[3], $dim[4]-$FEPS; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[1], $dim[3], $dim[4]-$FEPS; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[1], $dim[2], $dim[4]-$FEPS; |
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close RADSCN; |
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open (RADSCN, "> $bsender"); |
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print RADSCN '#@rfluxmtx u=-Y ' . ($tensortree ? "h=+sc$ns\n\n" : "h=+kf\n\n"); |
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print RADSCN "void polygon bwd_sender\n0\n0\n12\n"; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[0], $dim[2], $dim[5]+$FEPS; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[1], $dim[2], $dim[5]+$FEPS; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[1], $dim[3], $dim[5]+$FEPS; |
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printf RADSCN "\t%e\t%e\t%e\n", $dim[0], $dim[3], $dim[5]+$FEPS; |
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close RADSCN; |
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} |
254 |
print STDERR "Recover using: $0 -recover $td\n"; |
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} |
256 |
$curphase = 0; |
257 |
# Create data segments (all the work happens here) |
258 |
if ( $tensortree ) { |
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do_tree_bsdf(); |
260 |
} else { |
261 |
do_matrix_bsdf(); |
262 |
} |
263 |
# Output XML |
264 |
# print STDERR "Running: $wrapper\n"; |
265 |
system "$wrapper -C \"Created by: genBSDF @savedARGV\""; |
266 |
die "Could not wrap BSDF data\n" if ( $? ); |
267 |
# Clean up temporary files and exit |
268 |
exec $rmtmp; |
269 |
|
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#============== End of main program segment ==============# |
271 |
|
272 |
# Function to determine if next phase should be skipped or recovered |
273 |
sub do_phase { |
274 |
$curphase++; |
275 |
if ( defined $recovery ) { |
276 |
if ( $recovery > $curphase ) { return 0; } |
277 |
if ( $recovery == $curphase ) { return -1; } |
278 |
} |
279 |
open(MYPH, ">> $td/phase.txt"); |
280 |
print MYPH "$curphase\n"; |
281 |
close MYPH; |
282 |
return 1; |
283 |
} |
284 |
|
285 |
# Check if we are in active phase (not skipping parts) |
286 |
sub active_phase { |
287 |
if ( defined $recovery ) { |
288 |
if ( $recovery > $curphase ) { return 0; } |
289 |
if ( $recovery == $curphase ) { return -1; } |
290 |
} |
291 |
return 1; |
292 |
} |
293 |
|
294 |
# Function to run program and check output if in active phase |
295 |
sub run_check { |
296 |
if ( !active_phase() ) { return; } |
297 |
my $cmd = shift; |
298 |
# print STDERR "Running: $cmd\n"; |
299 |
system $cmd; |
300 |
die "Failure running: $cmd\n" if ( $? ); |
301 |
} |
302 |
|
303 |
#++++++++++++++ Tensor tree BSDF generation ++++++++++++++# |
304 |
sub do_tree_bsdf { |
305 |
|
306 |
# Run rfluxmtx processes to compute each side |
307 |
do_ttree_dir(0) if ( $doback ); |
308 |
do_ttree_dir(1) if ( $doforw ); |
309 |
|
310 |
} # end of sub do_tree_bsdf() |
311 |
|
312 |
# Call rfluxmtx and process tensor tree BSDF for the given direction |
313 |
sub do_ttree_dir { |
314 |
my $forw = shift; |
315 |
my $dop = do_phase(); |
316 |
my $r = ($dop < 0) ? " -r" : ""; |
317 |
my $cmd; |
318 |
if ( $tensortree == 3 ) { |
319 |
# Isotropic BSDF |
320 |
my $ns2 = $ns / 2; |
321 |
if ($windoz) { |
322 |
$cmd = "cnt $ns2 $ny $nx " . |
323 |
qq{| rcalc -e "r1=rand(.8681*recno-.673892)" } . |
324 |
qq{-e "r2=rand(-5.37138*recno+67.1737811)" } . |
325 |
qq{-e "r3=rand(+3.17603772*recno+83.766771)" } . |
326 |
qq{-e "Dx=1-2*(\$1+r1)/$ns;Dy:0;Dz=sqrt(1-Dx*Dx)" } . |
327 |
qq{-e "xp=(\$3+r2)*(($dim[1]-$dim[0])/$nx)+$dim[0]" } . |
328 |
qq{-e "yp=(\$2+r3)*(($dim[3]-$dim[2])/$ny)+$dim[2]" } . |
329 |
qq{-e "zp=$dim[5-$forw]" -e "myDz=Dz*($forw*2-1)" } . |
330 |
qq{-e "\$1=xp-Dx;\$2=yp-Dy;\$3=zp-myDz" } . |
331 |
qq{-e "\$4=Dx;\$5=Dy;\$6=myDz" } . |
332 |
"| $rfluxmtx$r -fa -y $ns2 - $receivers -i $octree"; |
333 |
} else { |
334 |
$cmd = "cnt $ns2 $ny $nx " . |
335 |
qq{| rcalc -e 'r1=rand(.8681*recno-.673892)' } . |
336 |
qq{-e 'r2=rand(-5.37138*recno+67.1737811)' } . |
337 |
qq{-e 'r3=rand(+3.17603772*recno+83.766771)' } . |
338 |
qq{-e 'Dx=1-2*(\$1+r1)/$ns;Dy:0;Dz=sqrt(1-Dx*Dx)' } . |
339 |
qq{-e 'xp=(\$3+r2)*(($dim[1]-$dim[0])/$nx)+$dim[0]' } . |
340 |
qq{-e 'yp=(\$2+r3)*(($dim[3]-$dim[2])/$ny)+$dim[2]' } . |
341 |
qq{-e 'zp=$dim[5-$forw]' -e 'myDz=Dz*($forw*2-1)' } . |
342 |
qq{-e '\$1=xp-Dx;\$2=yp-Dy;\$3=zp-myDz' } . |
343 |
qq{-e '\$4=Dx;\$5=Dy;\$6=myDz' -of } . |
344 |
"| $rfluxmtx$r -h -ff -y $ns2 - $receivers -i $octree"; |
345 |
} |
346 |
} else { |
347 |
# Anisotropic BSDF |
348 |
my $sender = ($bsender,$fsender)[$forw]; |
349 |
if ($windoz) { |
350 |
$cmd = "$rfluxmtx$r -fa $sender $receivers -i $octree"; |
351 |
} else { |
352 |
$cmd = "$rfluxmtx$r -h -ff $sender $receivers -i $octree"; |
353 |
} |
354 |
} |
355 |
if ( $dop ) { |
356 |
# print STDERR "Running: $cmd\n"; |
357 |
system $cmd; |
358 |
die "Failure running rfluxmtx" if ( $? ); |
359 |
} |
360 |
ttree_out($forw); |
361 |
} # end of do_ttree_dir() |
362 |
|
363 |
# Simplify and store tensor tree results |
364 |
sub ttree_out { |
365 |
my $forw = shift; |
366 |
my ($refldat,$transdat); |
367 |
if ( $forw ) { |
368 |
$transdat = $facedat; |
369 |
$refldat = $behinddat; |
370 |
} else { |
371 |
$transdat = $behinddat; |
372 |
$refldat = $facedat; |
373 |
} |
374 |
# Only output one transmitted anisotropic distribution, preferring backwards |
375 |
if ( !$forw || !$doback || $tensortree==3 ) { |
376 |
my $ttyp = ("tb","tf")[$forw]; |
377 |
ttree_comp($ttyp, "Visible", $transdat, ($tb,$tf)[$forw]); |
378 |
if ( $docolor ) { |
379 |
ttree_comp($ttyp, "CIE-u", $transdat, ($tbx,$tfx)[$forw]); |
380 |
ttree_comp($ttyp, "CIE-v", $transdat, ($tbz,$tfz)[$forw]); |
381 |
} |
382 |
} |
383 |
# Output reflection |
384 |
my $rtyp = ("rb","rf")[$forw]; |
385 |
ttree_comp($rtyp, "Visible", $refldat, ($rb,$rf)[$forw]); |
386 |
if ( $docolor ) { |
387 |
ttree_comp($rtyp, "CIE-u", $refldat, ($rbx,$rfx)[$forw]); |
388 |
ttree_comp($rtyp, "CIE-v", $refldat, ($rbz,$rfz)[$forw]); |
389 |
} |
390 |
} # end of ttree_out() |
391 |
|
392 |
# Call rttree_reduce on the given component |
393 |
sub ttree_comp { |
394 |
my $typ = shift; |
395 |
my $spec = shift; |
396 |
my $src = shift; |
397 |
my $dest = shift; |
398 |
my $cmd; |
399 |
if ($windoz) { |
400 |
if ("$spec" eq "Visible") { |
401 |
$cmd = qq{rcalc -e "Omega:PI/($ns*$ns)" } . |
402 |
q{-e "Ri=$1;Gi=$2;Bi=$3" } . |
403 |
qq{-e "$CIEuv" } . |
404 |
q{-e "$1=Yi/Omega"}; |
405 |
} elsif ("$spec" eq "CIE-u") { |
406 |
$cmd = q{rcalc -e "Ri=$1;Gi=$2;Bi=$3" } . |
407 |
qq{-e "$CIEuv" } . |
408 |
q{-e "$1=uprime"}; |
409 |
} elsif ("$spec" eq "CIE-v") { |
410 |
$cmd = q{rcalc -e "Ri=$1;Gi=$2;Bi=$3" } . |
411 |
qq{-e "$CIEuv" } . |
412 |
q{-e "$1=vprime"}; |
413 |
} |
414 |
} else { |
415 |
if ("$spec" eq "Visible") { |
416 |
$cmd = "rcalc -if3 -e 'Omega:PI/($ns*$ns)' " . |
417 |
q{-e 'Ri=$1;Gi=$2;Bi=$3' } . |
418 |
"-e '$CIEuv' " . |
419 |
q{-e '$1=Yi/Omega'}; |
420 |
} elsif ("$spec" eq "CIE-u") { |
421 |
$cmd = q{rcalc -if3 -e 'Ri=$1;Gi=$2;Bi=$3' } . |
422 |
"-e '$CIEuv' " . |
423 |
q{-e '$1=uprime'}; |
424 |
} elsif ("$spec" eq "CIE-v") { |
425 |
$cmd = q{rcalc -if3 -e 'Ri=$1;Gi=$2;Bi=$3' } . |
426 |
"-e '$CIEuv' " . |
427 |
q{-e '$1=vprime'}; |
428 |
} |
429 |
} |
430 |
if ($pctcull >= 0) { |
431 |
my $avg = ( $dorecip && "$typ" =~ /^r[fb]/ ) ? " -a" : ""; |
432 |
my $pcull = ("$spec" eq "Visible") ? $pctcull : |
433 |
(100 - (100-$pctcull)*.25) ; |
434 |
if ($windoz) { |
435 |
$cmd = "rcollate -ho -oc 1 $src | " . |
436 |
$cmd . |
437 |
" | rttree_reduce$avg -h -fa -t $pcull -r $tensortree -g $ttlog2"; |
438 |
} else { |
439 |
$cmd .= " -of $src " . |
440 |
"| rttree_reduce$avg -h -ff -t $pcull -r $tensortree -g $ttlog2"; |
441 |
} |
442 |
run_check "$cmd > $dest"; |
443 |
} else { |
444 |
if ($windoz) { |
445 |
$cmd = "rcollate -ho -oc 1 $src | " . $cmd ; |
446 |
} else { |
447 |
$cmd .= " $src"; |
448 |
} |
449 |
if ( active_phase() ) { |
450 |
open(DATOUT, "> $dest"); |
451 |
print DATOUT "{\n"; |
452 |
close DATOUT; |
453 |
# print STDERR "Running: $cmd\n"; |
454 |
system "$cmd >> $dest"; |
455 |
die "Failure running rcalc" if ( $? ); |
456 |
open(DATOUT, ">> $dest"); |
457 |
for (my $i = ($tensortree==3)*$ns*$ns*$ns/2; $i-- > 0; ) { |
458 |
print DATOUT "0\n"; |
459 |
} |
460 |
print DATOUT "}\n"; |
461 |
close DATOUT; |
462 |
} |
463 |
} |
464 |
if ( "$spec" ne "$curspec" ) { |
465 |
$wrapper .= " -s $spec"; |
466 |
$curspec = $spec; |
467 |
} |
468 |
$wrapper .= " -$typ $dest"; |
469 |
} # end of ttree_comp() |
470 |
|
471 |
#------------- End of do_tree_bsdf() & subroutines -------------# |
472 |
|
473 |
#+++++++++++++++ Klems matrix BSDF generation +++++++++++++++# |
474 |
sub do_matrix_bsdf { |
475 |
|
476 |
# Run rfluxmtx processes to compute each side |
477 |
do_matrix_dir(0) if ( $doback ); |
478 |
do_matrix_dir(1) if ( $doforw ); |
479 |
|
480 |
} # end of sub do_matrix_bsdf() |
481 |
|
482 |
# Call rfluxmtx and process tensor tree BSDF for the given direction |
483 |
sub do_matrix_dir { |
484 |
my $forw = shift; |
485 |
my $dop = do_phase(); |
486 |
my $r = ($dop < 0) ? " -r" : ""; |
487 |
my $sender = ($bsender,$fsender)[$forw]; |
488 |
my $cmd = "$rfluxmtx$r -fd $sender $receivers -i $octree"; |
489 |
if ( $dop ) { |
490 |
# print STDERR "Running: $cmd\n"; |
491 |
system $cmd; |
492 |
die "Failure running rfluxmtx" if ( $? ); |
493 |
} |
494 |
matrix_out($forw); |
495 |
} # end of do_matrix_dir() |
496 |
|
497 |
sub matrix_out { |
498 |
my $forw = shift; |
499 |
my ($refldat,$transdat); |
500 |
if ( $forw ) { |
501 |
$transdat = $facedat; |
502 |
$refldat = $behinddat; |
503 |
} else { |
504 |
$transdat = $behinddat; |
505 |
$refldat = $facedat; |
506 |
} |
507 |
# Output transmission |
508 |
my $ttyp = ("tb","tf")[$forw]; |
509 |
matrix_comp($ttyp, "Visible", $transdat, ($tb,$tf)[$forw]); |
510 |
if ( $docolor ) { |
511 |
matrix_comp($ttyp, "CIE-X", $transdat, ($tbx,$tfx)[$forw]); |
512 |
matrix_comp($ttyp, "CIE-Z", $transdat, ($tbz,$tfz)[$forw]); |
513 |
} |
514 |
# Output reflection |
515 |
my $rtyp = ("rb","rf")[$forw]; |
516 |
matrix_comp($rtyp, "Visible", $refldat, ($rb,$rf)[$forw]); |
517 |
if ( $docolor ) { |
518 |
matrix_comp($rtyp, "CIE-X", $refldat, ($rbx,$rfx)[$forw]); |
519 |
matrix_comp($rtyp, "CIE-Z", $refldat, ($rbz,$rfz)[$forw]); |
520 |
} |
521 |
} # end of matrix_out() |
522 |
|
523 |
# Transpose matrix component data and save to file |
524 |
sub matrix_comp { |
525 |
my $typ = shift; |
526 |
my $spec = shift; |
527 |
my $src = shift; |
528 |
my $dest = shift; |
529 |
my $cmd = "rmtxop -fa -t"; |
530 |
if ("$spec" eq "Visible") { |
531 |
$cmd .= " -c 0.2651 0.6701 0.0648"; |
532 |
} elsif ("$spec" eq "CIE-X") { |
533 |
$cmd .= " -c 0.5141 0.3239 0.1620"; |
534 |
} elsif ("$spec" eq "CIE-Z") { |
535 |
$cmd .= " -c 0.0241 0.1229 0.8530"; |
536 |
} |
537 |
$cmd .= " $src | getinfo -"; |
538 |
run_check "$cmd > $dest"; |
539 |
if ( "$spec" ne "$curspec" ) { |
540 |
$wrapper .= " -s $spec"; |
541 |
$curspec = $spec; |
542 |
} |
543 |
$wrapper .= " -$typ $dest"; |
544 |
} # end of matrix_comp() |
545 |
|
546 |
#------------- End of do_matrix_bsdf() & subroutines --------------# |