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#!/usr/bin/perl -w |
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# RCSid $Id: genBSDF.pl,v 2.31 2012/02/20 04:54:49 greg Exp $ |
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# |
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# Compute BSDF based on geometry and material description |
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# |
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# G. Ward |
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# |
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use strict; |
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use File::Temp qw/ :mktemp /; |
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sub userror { |
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print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-t{3|4} Nlog2][-r \"ropts\"][-dim xmin xmax ymin ymax zmin zmax][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom units] [input ..]\n"; |
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exit 1; |
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} |
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my $td = mkdtemp("/tmp/genBSDF.XXXXXX"); |
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chomp $td; |
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my @savedARGV = @ARGV; |
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my $tensortree = 0; |
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my $ttlog2 = 4; |
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my $nsamp = 2000; |
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my $rtargs = "-w -ab 5 -ad 700 -lw 3e-6"; |
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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 $doforw = 0; |
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my $doback = 1; |
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my $pctcull = 95; |
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my $gunit = "Meter"; |
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my @dim; |
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# Get options |
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while ($#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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$rtargs = "$rtargs $ARGV[1]"; |
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shift @ARGV; |
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} elsif ("$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 ("$ARGV[0]" =~ /^[-+]f/) { |
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$doforw = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" =~ /^[-+]b/) { |
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$doback = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" eq "-t") { |
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$pctcull = $ARGV[1]; |
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shift @ARGV; |
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} elsif ("$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 "-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); |
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# Name our own persist file? |
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my $persistfile; |
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if ( $tensortree && $nproc > 1 && "$rtargs" !~ /-PP /) { |
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$persistfile = "$td/pfile.txt"; |
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$rtargs = "-PP $persistfile $rtargs"; |
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} |
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# Get scene description and dimensions |
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my $radscn = "$td/device.rad"; |
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my $mgfscn = "$td/device.mgf"; |
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my $octree = "$td/device.oct"; |
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if ( $mgfin ) { |
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system "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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die "Could not load MGF input\n" if ( $? ); |
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system "mgf2rad $mgfscn > $radscn"; |
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} else { |
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system "xform -e @ARGV > $radscn"; |
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die "Could not load Radiance input\n" if ( $? ); |
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system "rad2mgf $radscn > $mgfscn" if ( $geout ); |
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} |
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if ($#dim != 5) { |
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@dim = split ' ', `getbbox -h $radscn`; |
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} |
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print STDERR "Warning: Device extends into room\n" if ($dim[5] > 1e-5); |
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# Add receiver surfaces (rectangular) |
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my $fmodnm="receiver_face"; |
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my $bmodnm="receiver_behind"; |
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open(RADSCN, ">> $radscn"); |
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print RADSCN "void glow $fmodnm\n0\n0\n4 1 1 1 0\n\n"; |
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print RADSCN "$fmodnm source f_receiver\n0\n0\n4 0 0 1 180\n"; |
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print RADSCN "void glow $bmodnm\n0\n0\n4 1 1 1 0\n\n"; |
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print RADSCN "$bmodnm source b_receiver\n0\n0\n4 0 0 -1 180\n"; |
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close RADSCN; |
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# Generate octree |
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system "oconv -w $radscn > $octree"; |
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die "Could not compile scene\n" if ( $? ); |
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# Output XML prologue |
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print |
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'<?xml version="1.0" encoding="UTF-8"?> |
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<WindowElement xmlns="http://windows.lbl.gov" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://windows.lbl.gov/BSDF-v1.4.xsd"> |
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'; |
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print "<!-- File produced by: genBSDF @savedARGV -->\n"; |
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print |
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'<WindowElementType>System</WindowElementType> |
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<Optical> |
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<Layer> |
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<Material> |
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<Name>Name</Name> |
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<Manufacturer>Manufacturer</Manufacturer> |
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'; |
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printf "\t\t<Thickness unit=\"$gunit\">%.3f</Thickness>\n", $dim[5] - $dim[4]; |
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printf "\t\t<Width unit=\"$gunit\">%.3f</Width>\n", $dim[1] - $dim[0]; |
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printf "\t\t<Height unit=\"$gunit\">%.3f</Height>\n", $dim[3] - $dim[2]; |
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print "\t\t<DeviceType>Integral</DeviceType>\n"; |
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# Output MGF description if requested |
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if ( $geout ) { |
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print "\t\t<Geometry format=\"MGF\" unit=\"$gunit\">\n"; |
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printf "xf -t %.6f %.6f 0\n", -($dim[0]+$dim[1])/2, -($dim[2]+$dim[3])/2; |
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open(MGFSCN, "< $mgfscn"); |
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while (<MGFSCN>) { print $_; } |
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close MGFSCN; |
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print "xf\n"; |
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print "\t\t</Geometry>\n"; |
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} |
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print " </Material>\n"; |
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# Set up surface sampling |
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my $nx = int(sqrt($nsamp*($dim[1]-$dim[0])/($dim[3]-$dim[2])) + .5); |
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my $ny = int($nsamp/$nx + .5); |
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$nsamp = $nx * $ny; |
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my $ns = 2**$ttlog2; |
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my (@pdiv, $disk2sq, $sq2disk, $tcal, $kcal); |
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# Create data segments (all the work happens here) |
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if ( $tensortree ) { |
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do_tree_bsdf(); |
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} else { |
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do_matrix_bsdf(); |
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} |
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# Output XML epilogue |
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print |
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'</Layer> |
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</Optical> |
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</WindowElement> |
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'; |
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# Clean up temporary files and exit |
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exec("rm -rf $td"); |
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|
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#-------------- End of main program segment --------------# |
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|
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#++++++++++++++ Kill persistent rtrace +++++++++++++++++++# |
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sub persist_end { |
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if ( $persistfile && open(PFI, "< $persistfile") ) { |
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while (<PFI>) { |
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s/^[^ ]* //; |
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kill('ALRM', $_); |
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last; |
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} |
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close PFI; |
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} |
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} |
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|
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#++++++++++++++ Tensor tree BSDF generation ++++++++++++++# |
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sub do_tree_bsdf { |
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# Get sampling rate and subdivide task |
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my $ns2 = $ns; |
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$ns2 /= 2 if ( $tensortree == 3 ); |
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my $nsplice = $nproc; |
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$nsplice *= 10 if ($nproc > 1); |
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$nsplice = $ns2 if ($nsplice > $ns2); |
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$nsplice = 999 if ($nsplice > 999); |
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@pdiv = (0, int($ns2/$nsplice)); |
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my $nrem = $ns2 % $nsplice; |
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for (my $i = 1; $i < $nsplice; $i++) { |
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my $nv = $pdiv[$i] + $pdiv[1]; |
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++$nv if ( $nrem-- > 0 ); |
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push @pdiv, $nv; |
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} |
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die "Script error 1" if ($pdiv[-1] != $ns2); |
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# Shirley-Chiu mapping from unit square to disk |
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$sq2disk = ' |
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in_square_a = 2*in_square_x - 1; |
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in_square_b = 2*in_square_y - 1; |
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in_square_rgn = if(in_square_a + in_square_b, |
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if(in_square_a - in_square_b, 1, 2), |
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if(in_square_b - in_square_a, 3, 4)); |
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out_disk_r = .999995*select(in_square_rgn, in_square_a, in_square_b, |
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-in_square_a, -in_square_b); |
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out_disk_phi = PI/4 * select(in_square_rgn, |
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in_square_b/in_square_a, |
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2 - in_square_a/in_square_b, |
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4 + in_square_b/in_square_a, |
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if(in_square_b*in_square_b, |
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6 - in_square_a/in_square_b, 0)); |
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Dx = out_disk_r*cos(out_disk_phi); |
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Dy = out_disk_r*sin(out_disk_phi); |
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Dz = sqrt(1 - out_disk_r*out_disk_r); |
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'; |
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# Shirley-Chiu mapping from unit disk to square |
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$disk2sq = ' |
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norm_radians(p) : if(-p - PI/4, p + 2*PI, p); |
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in_disk_r = .999995*sqrt(Dx*Dx + Dy*Dy); |
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in_disk_phi = norm_radians(atan2(Dy, Dx)); |
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in_disk_rgn = floor((in_disk_phi + PI/4)/(PI/2)) + 1; |
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out_square_a = select(in_disk_rgn, |
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in_disk_r, |
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(PI/2 - in_disk_phi)*in_disk_r/(PI/4), |
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-in_disk_r, |
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(in_disk_phi - 3*PI/2)*in_disk_r/(PI/4)); |
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out_square_b = select(in_disk_rgn, |
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in_disk_phi*in_disk_r/(PI/4), |
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in_disk_r, |
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(PI - in_disk_phi)*in_disk_r/(PI/4), |
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-in_disk_r); |
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out_square_x = (out_square_a + 1)/2; |
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out_square_y = (out_square_b + 1)/2; |
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'; |
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# Announce ourselves in XML output |
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print "\t<DataDefinition>\n"; |
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print "\t\t<IncidentDataStructure>TensorTree$tensortree</IncidentDataStructure>\n"; |
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print "\t</DataDefinition>\n"; |
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# Fork parallel rtcontrib processes to compute each side |
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my $npleft = $nproc; |
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if ( $doback ) { |
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for (my $splice = 0; $splice < $nsplice; $splice++) { |
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if (! $npleft ) { |
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wait(); |
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die "rtcontrib process reported error" if ( $? ); |
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$npleft++; |
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} |
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bg_tree_rtcontrib(0, $splice); |
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$npleft--; |
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} |
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while (wait() >= 0) { |
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die "rtcontrib process reported error" if ( $? ); |
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$npleft++; |
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} |
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persist_end(); |
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ttree_out(0); |
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} |
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if ( $doforw ) { |
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for (my $splice = 0; $splice < $nsplice; $splice++) { |
252 |
if (! $npleft ) { |
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wait(); |
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die "rtcontrib process reported error" if ( $? ); |
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$npleft++; |
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} |
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bg_tree_rtcontrib(1, $splice); |
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$npleft--; |
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} |
260 |
while (wait() >= 0) { |
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die "rtcontrib process reported error" if ( $? ); |
262 |
$npleft++; |
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} |
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persist_end(); |
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ttree_out(1); |
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} |
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} # end of sub do_tree_bsdf() |
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|
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# Run rtcontrib process in background to generate tensor tree samples |
270 |
sub bg_tree_rtcontrib { |
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my $pid = fork(); |
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die "Cannot fork new process" unless defined $pid; |
273 |
if ($pid > 0) { return $pid; } |
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my $forw = shift; |
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my $pn = shift; |
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my $pbeg = $pdiv[$pn]; |
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my $plen = $pdiv[$pn+1] - $pbeg; |
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my $matargs = "-m $bmodnm"; |
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if ( !$forw || !$doback ) { $matargs .= " -m $fmodnm"; } |
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my $cmd = "rtcontrib $rtargs -h -ff -fo -c $nsamp " . |
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"-e '$disk2sq' -bn '$ns*$ns' " . |
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"-b '$ns*floor(out_square_x*$ns)+floor(out_square_y*$ns)' " . |
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"-o $td/%s_" . sprintf("%03d", $pn) . ".flt $matargs $octree"; |
284 |
if ( $tensortree == 3 ) { |
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# Isotropic BSDF |
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$cmd = "cnt $plen $ny $nx " . |
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"| rcalc -e 'r1=rand(($pn+.8681)*recno-.673892)' " . |
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"-e 'r2=rand(($pn-5.37138)*recno+67.1737811)' " . |
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"-e 'r3=rand(($pn+3.17603772)*recno+83.766771)' " . |
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"-e 'Dx=1-2*($pbeg+\$1+r1)/$ns;Dy:0;Dz=sqrt(1-Dx*Dx)' " . |
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"-e 'xp=(\$3+r2)*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
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"-e 'yp=(\$2+r3)*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
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"-e 'zp=$dim[5-$forw]' -e 'myDz=Dz*($forw*2-1)' " . |
294 |
"-e '\$1=xp-Dx;\$2=yp-Dy;\$3=zp-myDz' " . |
295 |
"-e '\$4=Dx;\$5=Dy;\$6=myDz' -of " . |
296 |
"| $cmd"; |
297 |
} else { |
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# Anisotropic BSDF |
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# Sample area vertically to improve load balance, since |
300 |
# shading systems usually have bilateral symmetry (L-R) |
301 |
$cmd = "cnt $plen $ns $ny $nx " . |
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"| rcalc -e 'r1=rand(($pn+.8681)*recno-.673892)' " . |
303 |
"-e 'r2=rand(($pn-5.37138)*recno+67.1737811)' " . |
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"-e 'r3=rand(($pn+3.17603772)*recno+83.766771)' " . |
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"-e 'r4=rand(($pn-2.3857833)*recno-964.72738)' " . |
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"-e 'in_square_x=($pbeg+\$1+r1)/$ns' " . |
307 |
"-e 'in_square_y=(\$2+r2)/$ns' -e '$sq2disk' " . |
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"-e 'xp=(\$4+r3)*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
309 |
"-e 'yp=(\$3+r4)*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
310 |
"-e 'zp=$dim[5-$forw]' -e 'myDz=Dz*($forw*2-1)' " . |
311 |
"-e '\$1=xp-Dx;\$2=yp-Dy;\$3=zp-myDz' " . |
312 |
"-e '\$4=Dx;\$5=Dy;\$6=myDz' -of " . |
313 |
"| $cmd"; |
314 |
} |
315 |
# print STDERR "Starting: $cmd\n"; |
316 |
exec($cmd); # no return; status report to parent via wait |
317 |
die "Cannot exec: $cmd\n"; |
318 |
} # end of bg_tree_rtcontrib() |
319 |
|
320 |
# Simplify and output tensor tree results |
321 |
sub ttree_out { |
322 |
my $forw = shift; |
323 |
my $side = ("Back","Front")[$forw]; |
324 |
# Only output one transmitted distribution, preferring backwards |
325 |
if ( !$forw || !$doback ) { |
326 |
print |
327 |
' <WavelengthData> |
328 |
<LayerNumber>System</LayerNumber> |
329 |
<Wavelength unit="Integral">Visible</Wavelength> |
330 |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
331 |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
332 |
<WavelengthDataBlock> |
333 |
<WavelengthDataDirection>Transmission</WavelengthDataDirection> |
334 |
<AngleBasis>LBNL/Shirley-Chiu</AngleBasis> |
335 |
<ScatteringDataType>BTDF</ScatteringDataType> |
336 |
<ScatteringData> |
337 |
'; |
338 |
system "rcalc -if3 -e 'Omega:PI/($ns*$ns)' " . |
339 |
q{-e '$1=(0.265*$1+0.670*$2+0.065*$3)/Omega' -of } . |
340 |
"$td/" . ($bmodnm,$fmodnm)[$forw] . "_???.flt " . |
341 |
"| rttree_reduce -a -h -ff -t $pctcull -r $tensortree -g $ttlog2"; |
342 |
die "Failure running rttree_reduce" if ( $? ); |
343 |
print |
344 |
' </ScatteringData> |
345 |
</WavelengthDataBlock> |
346 |
</WavelengthData> |
347 |
'; |
348 |
} |
349 |
# Output reflection |
350 |
print |
351 |
' <WavelengthData> |
352 |
<LayerNumber>System</LayerNumber> |
353 |
<Wavelength unit="Integral">Visible</Wavelength> |
354 |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
355 |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
356 |
<WavelengthDataBlock> |
357 |
'; |
358 |
print "\t\t\t<WavelengthDataDirection>Reflection $side</WavelengthDataDirection>\n"; |
359 |
print |
360 |
' <AngleBasis>LBNL/Shirley-Chiu</AngleBasis> |
361 |
<ScatteringDataType>BRDF</ScatteringDataType> |
362 |
<ScatteringData> |
363 |
'; |
364 |
system "rcalc -if3 -e 'Omega:PI/($ns*$ns)' " . |
365 |
q{-e '$1=(0.265*$1+0.670*$2+0.065*$3)/Omega' -of } . |
366 |
"$td/" . ($fmodnm,$bmodnm)[$forw] . "_???.flt " . |
367 |
"| rttree_reduce -a -h -ff -t $pctcull -r $tensortree -g $ttlog2"; |
368 |
die "Failure running rttree_reduce" if ( $? ); |
369 |
print |
370 |
' </ScatteringData> |
371 |
</WavelengthDataBlock> |
372 |
</WavelengthData> |
373 |
'; |
374 |
} # end of ttree_out() |
375 |
|
376 |
#------------- End of do_tree_bsdf() & subroutines -------------# |
377 |
|
378 |
#+++++++++++++++ Klems matrix BSDF generation +++++++++++++++# |
379 |
sub do_matrix_bsdf { |
380 |
# Set up sampling of portal |
381 |
# Kbin to produce incident direction in full Klems basis with (x1,x2) randoms |
382 |
$tcal = ' |
383 |
DEGREE : PI/180; |
384 |
sq(x) : x*x; |
385 |
Kpola(r) : select(r+1, -5, 5, 15, 25, 35, 45, 55, 65, 75, 90); |
386 |
Knaz(r) : select(r, 1, 8, 16, 20, 24, 24, 24, 16, 12); |
387 |
Kaccum(r) : if(r-.5, Knaz(r) + Kaccum(r-1), 0); |
388 |
Kmax : Kaccum(Knaz(0)); |
389 |
Kfindrow(r, rem) : if(rem-Knaz(r)+.5, Kfindrow(r+1, rem-Knaz(r)), r); |
390 |
Krow = if(Kbin-(Kmax-.5), 0, Kfindrow(1, Kbin)); |
391 |
Kcol = Kbin - Kaccum(Krow-1); |
392 |
Kazi = 360*DEGREE * (Kcol + (.5 - x2)) / Knaz(Krow); |
393 |
Kpol = DEGREE * (x1*Kpola(Krow) + (1-x1)*Kpola(Krow-1)); |
394 |
sin_kpol = sin(Kpol); |
395 |
Dx = cos(Kazi)*sin_kpol; |
396 |
Dy = sin(Kazi)*sin_kpol; |
397 |
Dz = sqrt(1 - sin_kpol*sin_kpol); |
398 |
KprojOmega = PI * if(Kbin-.5, |
399 |
(sq(cos(Kpola(Krow-1)*DEGREE)) - sq(cos(Kpola(Krow)*DEGREE)))/Knaz(Krow), |
400 |
1 - sq(cos(Kpola(1)*DEGREE))); |
401 |
'; |
402 |
# Compute Klems bin from exiting ray direction (forward or backward) |
403 |
$kcal = ' |
404 |
DEGREE : PI/180; |
405 |
abs(x) : if(x, x, -x); |
406 |
Acos(x) : if(x-1, 0, if(-1-x, PI, acos(x))) / DEGREE; |
407 |
posangle(a) : if(-a, a + 2*PI, a); |
408 |
Atan2(y,x) : posangle(atan2(y,x)) / DEGREE; |
409 |
kpola(r) : select(r, 5, 15, 25, 35, 45, 55, 65, 75, 90); |
410 |
knaz(r) : select(r, 1, 8, 16, 20, 24, 24, 24, 16, 12); |
411 |
kaccum(r) : if(r-.5, knaz(r) + kaccum(r-1), 0); |
412 |
kfindrow(r, pol) : if(r-kpola(0)+.5, r, |
413 |
if(pol-kpola(r), kfindrow(r+1, pol), r) ); |
414 |
kazn(azi,inc) : if((360-.5*inc)-azi, floor((azi+.5*inc)/inc), 0); |
415 |
kbin2(pol,azi) = select(kfindrow(1, pol), |
416 |
kazn(azi,360/knaz(1)), |
417 |
kaccum(1) + kazn(azi,360/knaz(2)), |
418 |
kaccum(2) + kazn(azi,360/knaz(3)), |
419 |
kaccum(3) + kazn(azi,360/knaz(4)), |
420 |
kaccum(4) + kazn(azi,360/knaz(5)), |
421 |
kaccum(5) + kazn(azi,360/knaz(6)), |
422 |
kaccum(6) + kazn(azi,360/knaz(7)), |
423 |
kaccum(7) + kazn(azi,360/knaz(8)), |
424 |
kaccum(8) + kazn(azi,360/knaz(9)) |
425 |
); |
426 |
kbin = kbin2(Acos(abs(Dz)),Atan2(Dy,Dx)); |
427 |
'; |
428 |
my $ndiv = 145; |
429 |
# Compute scattering data using rtcontrib |
430 |
my @tfarr; |
431 |
my @rfarr; |
432 |
my @tbarr; |
433 |
my @rbarr; |
434 |
my $cmd; |
435 |
my $rtcmd = "rtcontrib $rtargs -h -ff -fo -n $nproc -c $nsamp " . |
436 |
"-e '$kcal' -b kbin -bn $ndiv " . |
437 |
"-o '$td/%s.flt' -m $fmodnm -m $bmodnm $octree"; |
438 |
my $rccmd = "rcalc -e '$tcal' " . |
439 |
"-e 'mod(n,d):n-floor(n/d)*d' -e 'Kbin=mod(recno-.999,$ndiv)' " . |
440 |
q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega' }; |
441 |
if ( $doforw ) { |
442 |
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
443 |
"-e 'xp=(\$3+rand(.12*recno+288))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
444 |
"-e 'yp=(\$2+rand(.37*recno-44))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
445 |
"-e 'zp:$dim[4]' " . |
446 |
q{-e 'Kbin=$1;x1=rand(2.75*recno+3.1);x2=rand(-2.01*recno-3.37)' } . |
447 |
q{-e '$1=xp-Dx;$2=yp-Dy;$3=zp-Dz;$4=Dx;$5=Dy;$6=Dz' } . |
448 |
"| $rtcmd"; |
449 |
system "$cmd" || die "Failure running: $cmd\n"; |
450 |
@tfarr = `$rccmd $td/$fmodnm.flt`; |
451 |
die "Failure running: $rccmd $td/$fmodnm.flt\n" if ( $? ); |
452 |
@rfarr = `$rccmd $td/$bmodnm.flt`; |
453 |
die "Failure running: $rccmd $td/$bmodnm.flt\n" if ( $? ); |
454 |
} |
455 |
if ( $doback ) { |
456 |
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
457 |
"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
458 |
"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
459 |
"-e 'zp:$dim[5]' " . |
460 |
q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } . |
461 |
q{-e '$1=xp-Dx;$2=yp-Dy;$3=zp+Dz;$4=Dx;$5=Dy;$6=-Dz' } . |
462 |
"| $rtcmd"; |
463 |
system "$cmd" || die "Failure running: $cmd\n"; |
464 |
@tbarr = `$rccmd $td/$bmodnm.flt`; |
465 |
die "Failure running: $rccmd $td/$bmodnm.flt\n" if ( $? ); |
466 |
chomp(@tbarr); |
467 |
@rbarr = `$rccmd $td/$fmodnm.flt`; |
468 |
die "Failure running: $rccmd $td/$fmodnm.flt\n" if ( $? ); |
469 |
chomp(@rbarr); |
470 |
} |
471 |
# Output angle basis |
472 |
print |
473 |
' <DataDefinition> |
474 |
<IncidentDataStructure>Columns</IncidentDataStructure> |
475 |
<AngleBasis> |
476 |
<AngleBasisName>LBNL/Klems Full</AngleBasisName> |
477 |
<AngleBasisBlock> |
478 |
<Theta>0</Theta> |
479 |
<nPhis>1</nPhis> |
480 |
<ThetaBounds> |
481 |
<LowerTheta>0</LowerTheta> |
482 |
<UpperTheta>5</UpperTheta> |
483 |
</ThetaBounds> |
484 |
</AngleBasisBlock> |
485 |
<AngleBasisBlock> |
486 |
<Theta>10</Theta> |
487 |
<nPhis>8</nPhis> |
488 |
<ThetaBounds> |
489 |
<LowerTheta>5</LowerTheta> |
490 |
<UpperTheta>15</UpperTheta> |
491 |
</ThetaBounds> |
492 |
</AngleBasisBlock> |
493 |
<AngleBasisBlock> |
494 |
<Theta>20</Theta> |
495 |
<nPhis>16</nPhis> |
496 |
<ThetaBounds> |
497 |
<LowerTheta>15</LowerTheta> |
498 |
<UpperTheta>25</UpperTheta> |
499 |
</ThetaBounds> |
500 |
</AngleBasisBlock> |
501 |
<AngleBasisBlock> |
502 |
<Theta>30</Theta> |
503 |
<nPhis>20</nPhis> |
504 |
<ThetaBounds> |
505 |
<LowerTheta>25</LowerTheta> |
506 |
<UpperTheta>35</UpperTheta> |
507 |
</ThetaBounds> |
508 |
</AngleBasisBlock> |
509 |
<AngleBasisBlock> |
510 |
<Theta>40</Theta> |
511 |
<nPhis>24</nPhis> |
512 |
<ThetaBounds> |
513 |
<LowerTheta>35</LowerTheta> |
514 |
<UpperTheta>45</UpperTheta> |
515 |
</ThetaBounds> |
516 |
</AngleBasisBlock> |
517 |
<AngleBasisBlock> |
518 |
<Theta>50</Theta> |
519 |
<nPhis>24</nPhis> |
520 |
<ThetaBounds> |
521 |
<LowerTheta>45</LowerTheta> |
522 |
<UpperTheta>55</UpperTheta> |
523 |
</ThetaBounds> |
524 |
</AngleBasisBlock> |
525 |
<AngleBasisBlock> |
526 |
<Theta>60</Theta> |
527 |
<nPhis>24</nPhis> |
528 |
<ThetaBounds> |
529 |
<LowerTheta>55</LowerTheta> |
530 |
<UpperTheta>65</UpperTheta> |
531 |
</ThetaBounds> |
532 |
</AngleBasisBlock> |
533 |
<AngleBasisBlock> |
534 |
<Theta>70</Theta> |
535 |
<nPhis>16</nPhis> |
536 |
<ThetaBounds> |
537 |
<LowerTheta>65</LowerTheta> |
538 |
<UpperTheta>75</UpperTheta> |
539 |
</ThetaBounds> |
540 |
</AngleBasisBlock> |
541 |
<AngleBasisBlock> |
542 |
<Theta>82.5</Theta> |
543 |
<nPhis>12</nPhis> |
544 |
<ThetaBounds> |
545 |
<LowerTheta>75</LowerTheta> |
546 |
<UpperTheta>90</UpperTheta> |
547 |
</ThetaBounds> |
548 |
</AngleBasisBlock> |
549 |
</AngleBasis> |
550 |
</DataDefinition> |
551 |
'; |
552 |
if ( $doforw ) { |
553 |
print |
554 |
' <WavelengthData> |
555 |
<LayerNumber>System</LayerNumber> |
556 |
<Wavelength unit="Integral">Visible</Wavelength> |
557 |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
558 |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
559 |
<WavelengthDataBlock> |
560 |
<WavelengthDataDirection>Transmission Front</WavelengthDataDirection> |
561 |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
562 |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
563 |
<ScatteringDataType>BTDF</ScatteringDataType> |
564 |
<ScatteringData> |
565 |
'; |
566 |
# Output front transmission (transposed order) |
567 |
for (my $od = 0; $od < $ndiv; $od++) { |
568 |
for (my $id = 0; $id < $ndiv; $id++) { |
569 |
print $tfarr[$ndiv*$id + $od], ",\n"; |
570 |
} |
571 |
print "\n"; |
572 |
} |
573 |
print |
574 |
' </ScatteringData> |
575 |
</WavelengthDataBlock> |
576 |
</WavelengthData> |
577 |
<WavelengthData> |
578 |
<LayerNumber>System</LayerNumber> |
579 |
<Wavelength unit="Integral">Visible</Wavelength> |
580 |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
581 |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
582 |
<WavelengthDataBlock> |
583 |
<WavelengthDataDirection>Reflection Front</WavelengthDataDirection> |
584 |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
585 |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
586 |
<ScatteringDataType>BRDF</ScatteringDataType> |
587 |
<ScatteringData> |
588 |
'; |
589 |
# Output front reflection (transposed order) |
590 |
for (my $od = 0; $od < $ndiv; $od++) { |
591 |
for (my $id = 0; $id < $ndiv; $id++) { |
592 |
print $rfarr[$ndiv*$id + $od], ",\n"; |
593 |
} |
594 |
print "\n"; |
595 |
} |
596 |
print |
597 |
' </ScatteringData> |
598 |
</WavelengthDataBlock> |
599 |
</WavelengthData> |
600 |
'; |
601 |
} |
602 |
if ( $doback ) { |
603 |
print |
604 |
' <WavelengthData> |
605 |
<LayerNumber>System</LayerNumber> |
606 |
<Wavelength unit="Integral">Visible</Wavelength> |
607 |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
608 |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
609 |
<WavelengthDataBlock> |
610 |
<WavelengthDataDirection>Transmission Back</WavelengthDataDirection> |
611 |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
612 |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
613 |
<ScatteringDataType>BTDF</ScatteringDataType> |
614 |
<ScatteringData> |
615 |
'; |
616 |
# Output back transmission (transposed order) |
617 |
for (my $od = 0; $od < $ndiv; $od++) { |
618 |
for (my $id = 0; $id < $ndiv; $id++) { |
619 |
print $tbarr[$ndiv*$id + $od], ",\n"; |
620 |
} |
621 |
print "\n"; |
622 |
} |
623 |
print |
624 |
' </ScatteringData> |
625 |
</WavelengthDataBlock> |
626 |
</WavelengthData> |
627 |
<WavelengthData> |
628 |
<LayerNumber>System</LayerNumber> |
629 |
<Wavelength unit="Integral">Visible</Wavelength> |
630 |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
631 |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
632 |
<WavelengthDataBlock> |
633 |
<WavelengthDataDirection>Reflection Back</WavelengthDataDirection> |
634 |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
635 |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
636 |
<ScatteringDataType>BRDF</ScatteringDataType> |
637 |
<ScatteringData> |
638 |
'; |
639 |
# Output back reflection (reciprocity averaging) |
640 |
for (my $od = 0; $od < $ndiv; $od++) { |
641 |
for (my $id = 0; $id < $ndiv; $id++) { |
642 |
print $rbarr[$ndiv*$id + $od], ",\n"; |
643 |
} |
644 |
print "\n"; |
645 |
} |
646 |
print |
647 |
' </ScatteringData> |
648 |
</WavelengthDataBlock> |
649 |
</WavelengthData> |
650 |
'; |
651 |
} |
652 |
} |
653 |
#------------- End of do_matrix_bsdf() --------------# |