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# |
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use strict; |
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sub userror { |
10 |
< |
print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-dim xmin xmax ymin ymax zmin zmax][{+|-}mgf][{+|-}geom] [input ..]\n"; |
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> |
print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-dim xmin xmax ymin ymax zmin zmax][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom] [input ..]\n"; |
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exit 1; |
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} |
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my $td = `mktemp -d /tmp/genBSDF.XXXXXX`; |
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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 $doback = 1; |
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my @dim; |
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# Get options |
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while ($#ARGV >= 0) { |
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$mgfin = ("$ARGV[0]" =~ /^\+/); |
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} elsif ("$ARGV[0]" =~ /^[-+]g/) { |
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$geout = ("$ARGV[0]" =~ /^\+/); |
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+ |
} elsif ("$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 ("$ARGV[0]" eq "-c") { |
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$nsamp = $ARGV[1]; |
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shift @ARGV; |
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} |
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shift @ARGV; |
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} |
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+ |
# Check that we're actually being asked to do something |
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+ |
die "Must have at least one of +forward or +backward" if (!$doforw && !$doback); |
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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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@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 surface (rectangle) |
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< |
my $modnm="_receiver_black_"; |
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> |
# Add receiver surfaces (rectangular) |
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> |
my $bmodnm="receiver_behind"; |
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> |
my $fmodnm="receiver_face"; |
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open(RADSCN, ">> $radscn"); |
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print RADSCN "void glow $modnm\n0\n0\n4 0 0 0 0\n\n"; |
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< |
print RADSCN "$modnm polygon _receiver_\n0\n0\n12\n"; |
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< |
print RADSCN "\t",$dim[0],"\t",$dim[2],"\t",$dim[5]+1e-5,"\n"; |
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< |
print RADSCN "\t",$dim[0],"\t",$dim[3],"\t",$dim[5]+1e-5,"\n"; |
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< |
print RADSCN "\t",$dim[1],"\t",$dim[3],"\t",$dim[5]+1e-5,"\n"; |
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< |
print RADSCN "\t",$dim[1],"\t",$dim[2],"\t",$dim[5]+1e-5,"\n"; |
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> |
print RADSCN "void glow $fmodnm\n0\n0\n4 0 0 0 0\n\n"; |
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> |
print RADSCN "$fmodnm polygon f_receiver\n0\n0\n12\n"; |
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> |
print RADSCN "\t",$dim[0],"\t",$dim[2],"\t",$dim[5]+2e-5,"\n"; |
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> |
print RADSCN "\t",$dim[0],"\t",$dim[3],"\t",$dim[5]+2e-5,"\n"; |
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> |
print RADSCN "\t",$dim[1],"\t",$dim[3],"\t",$dim[5]+2e-5,"\n"; |
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> |
print RADSCN "\t",$dim[1],"\t",$dim[2],"\t",$dim[5]+2e-5,"\n"; |
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> |
print RADSCN "void glow $bmodnm\n0\n0\n4 0 0 0 0\n\n"; |
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> |
print RADSCN "$bmodnm polygon b_receiver\n0\n0\n12\n"; |
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> |
print RADSCN "\t",$dim[1],"\t",$dim[2],"\t",$dim[4]-2e-5,"\n"; |
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> |
print RADSCN "\t",$dim[1],"\t",$dim[3],"\t",$dim[4]-2e-5,"\n"; |
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> |
print RADSCN "\t",$dim[0],"\t",$dim[3],"\t",$dim[4]-2e-5,"\n"; |
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> |
print RADSCN "\t",$dim[0],"\t",$dim[2],"\t",$dim[4]-2e-5,"\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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# Set up sampling |
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# Set up sampling of interior portal |
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# Kbin to produce incident direction in full Klems basis with (x1,x2) randoms |
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my $tcal = ' |
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DEGREE : PI/180; |
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Kazi = 360*DEGREE * (Kcol + (.5 - x2)) / Knaz(Krow); |
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Kpol = DEGREE * (x1*Kpola(Krow) + (1-x1)*Kpola(Krow-1)); |
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sin_kpol = sin(Kpol); |
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< |
Dx = -cos(Kazi)*sin_kpol; |
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Dx = cos(Kazi)*sin_kpol; |
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Dy = sin(Kazi)*sin_kpol; |
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Dz = sqrt(1 - sin_kpol*sin_kpol); |
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KprojOmega = PI * if(Kbin-.5, |
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(sq(cos(Kpola(Krow-1)*DEGREE)) - sq(cos(Kpola(Krow)*DEGREE)))/Knaz(Krow), |
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1 - sq(cos(Kpola(1)*DEGREE))); |
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'; |
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# Compute Klems bin from exiting ray direction |
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> |
# Compute Klems bin from exiting ray direction (forward or backward) |
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my $kcal = ' |
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DEGREE : PI/180; |
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Acos(x) : 1/DEGREE * if(x-1, 0, if(-1-x, 0, acos(x))); |
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kaccum(7) + kazn(azi,360/knaz(8)), |
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kaccum(8) + kazn(azi,360/knaz(9)) |
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); |
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kbin = kbin2(Acos(Dz), Atan2(Dy, -Dx)); |
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kbin = if(Dz, kbin2(Acos(Dz),Atan2(Dy,Dx)), kbin2(Acos(-Dz),Atan2(-Dy,-Dx))); |
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'; |
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my $ndiv = 145; |
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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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# Compute scattering data using rtcontrib |
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< |
my $cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
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my @tfarr; |
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> |
my @rfarr; |
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> |
my @tbarr; |
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my @rbarr; |
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my $cmd; |
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my $rtargs = "-w -ab 5 -ad 700 -lw 3e-6"; |
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> |
my $rtcmd = "rtcontrib -h -ff -fo -n $nproc -c $nsamp " . |
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> |
"-e '$kcal' -b kbin -bn $ndiv " . |
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> |
"-o '$td/%s.flt' -m $fmodnm -m $bmodnm $rtargs $octree"; |
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> |
my $rccmd = "rcalc -e '$tcal' " . |
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"-e 'mod(n,d):n-floor(n/d)*d' -e 'Kbin=mod(recno-.999,$ndiv)' " . |
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> |
q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega'}; |
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> |
if ( $doforw ) { |
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> |
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
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"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
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"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
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"-e 'zp:$dim[4]-1e-5' " . |
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q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } . |
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q{-e '$1=xp;$2=yp;$3=zp;$4=Dx;$5=Dy;$6=Dz' } . |
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< |
"| rtcontrib -h -ff -n $nproc -c $nsamp -e '$kcal' -b kbin -bn $ndiv " . |
160 |
< |
"-m $modnm -w -ab 5 -ad 700 -lw 3e-6 $octree " . |
161 |
< |
"| rcalc -e '$tcal' " . |
162 |
< |
"-e 'mod(n,d):n-floor(n/d)*d' -e 'Kbin=mod(recno-.999,$ndiv)' " . |
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< |
q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega'}; |
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< |
my @darr = `$cmd`; |
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die "Failure running: $cmd\n" if ( $? ); |
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> |
"| $rtcmd"; |
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> |
system "$cmd" || die "Failure running: $cmd\n"; |
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> |
@tfarr = `$rccmd $td/$fmodnm.flt`; |
162 |
> |
die "Failure running: $rccmd $td/$fmodnm.flt\n" if ( $? ); |
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> |
@rfarr = `$rccmd $td/$bmodnm.flt`; |
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> |
die "Failure running: $rccmd $td/$bmodnm.flt\n" if ( $? ); |
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} |
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> |
if ( $doback ) { |
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> |
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
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> |
"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
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"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
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"-e 'zp:$dim[5]+1e-5' " . |
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> |
q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } . |
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> |
q{-e '$1=xp;$2=yp;$3=zp;$4=-Dx;$5=-Dy;$6=-Dz' } . |
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"| $rtcmd"; |
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> |
system "$cmd" || die "Failure running: $cmd\n"; |
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> |
@tbarr = `$rccmd $td/$bmodnm.flt`; |
176 |
> |
die "Failure running: $rccmd $td/$bmodnm.flt\n" if ( $? ); |
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> |
@rbarr = `$rccmd $td/$fmodnm.flt`; |
178 |
> |
die "Failure running: $rccmd $td/$fmodnm.flt\n" if ( $? ); |
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> |
} |
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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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</AngleBasisBlock> |
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</AngleBasis> |
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</DataDefinition> |
282 |
< |
<WavelengthData> |
282 |
> |
'; |
283 |
> |
if ( $doforw ) { |
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> |
print ' <WavelengthData> |
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<LayerNumber>System</LayerNumber> |
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<Wavelength unit="Integral">Visible</Wavelength> |
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<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
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<ScatteringDataType>BTDF</ScatteringDataType> |
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<ScatteringData> |
295 |
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'; |
296 |
< |
# Output computed data (transposed order) |
296 |
> |
# Output front transmission (transposed order) |
297 |
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for (my $od = 0; $od < $ndiv; $od++) { |
298 |
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for (my $id = 0; $id < $ndiv; $id++) { |
299 |
< |
print $darr[$ndiv*$id + $od]; |
299 |
> |
print $tfarr[$ndiv*$id + $od]; |
300 |
|
} |
301 |
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print "\n"; |
302 |
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} |
259 |
– |
# Output XML epilogue |
303 |
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print |
304 |
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' </ScatteringData> |
305 |
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</WavelengthDataBlock> |
306 |
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</WavelengthData> |
307 |
< |
</Layer> |
307 |
> |
<WavelengthData> |
308 |
> |
<LayerNumber>System</LayerNumber> |
309 |
> |
<Wavelength unit="Integral">Visible</Wavelength> |
310 |
> |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
311 |
> |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
312 |
> |
<WavelengthDataBlock> |
313 |
> |
<WavelengthDataDirection>Reflection Front</WavelengthDataDirection> |
314 |
> |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
315 |
> |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
316 |
> |
<ScatteringDataType>BRDF</ScatteringDataType> |
317 |
> |
<ScatteringData> |
318 |
> |
'; |
319 |
> |
# Output front reflection (transposed order) |
320 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
321 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
322 |
> |
print $rfarr[$ndiv*$id + $od]; |
323 |
> |
} |
324 |
> |
print "\n"; |
325 |
> |
} |
326 |
> |
print |
327 |
> |
' </ScatteringData> |
328 |
> |
</WavelengthDataBlock> |
329 |
> |
</WavelengthData> |
330 |
> |
'; |
331 |
> |
} |
332 |
> |
if ( $doback ) { |
333 |
> |
print ' <WavelengthData> |
334 |
> |
<LayerNumber>System</LayerNumber> |
335 |
> |
<Wavelength unit="Integral">Visible</Wavelength> |
336 |
> |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
337 |
> |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
338 |
> |
<WavelengthDataBlock> |
339 |
> |
<WavelengthDataDirection>Transmission Back</WavelengthDataDirection> |
340 |
> |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
341 |
> |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
342 |
> |
<ScatteringDataType>BTDF</ScatteringDataType> |
343 |
> |
<ScatteringData> |
344 |
> |
'; |
345 |
> |
# Output back transmission (transposed order) |
346 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
347 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
348 |
> |
print $tbarr[$ndiv*$id + $od]; |
349 |
> |
} |
350 |
> |
print "\n"; |
351 |
> |
} |
352 |
> |
print |
353 |
> |
' </ScatteringData> |
354 |
> |
</WavelengthDataBlock> |
355 |
> |
</WavelengthData> |
356 |
> |
<WavelengthData> |
357 |
> |
<LayerNumber>System</LayerNumber> |
358 |
> |
<Wavelength unit="Integral">Visible</Wavelength> |
359 |
> |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
360 |
> |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
361 |
> |
<WavelengthDataBlock> |
362 |
> |
<WavelengthDataDirection>Reflection Back</WavelengthDataDirection> |
363 |
> |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
364 |
> |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
365 |
> |
<ScatteringDataType>BRDF</ScatteringDataType> |
366 |
> |
<ScatteringData> |
367 |
> |
'; |
368 |
> |
# Output back reflection (transposed order) |
369 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
370 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
371 |
> |
print $rbarr[$ndiv*$id + $od]; |
372 |
> |
} |
373 |
> |
print "\n"; |
374 |
> |
} |
375 |
> |
print |
376 |
> |
' </ScatteringData> |
377 |
> |
</WavelengthDataBlock> |
378 |
> |
</WavelengthData> |
379 |
> |
'; |
380 |
> |
} |
381 |
> |
# Output XML epilogue |
382 |
> |
print '</Layer> |
383 |
|
</Optical> |
384 |
|
</WindowElement> |
385 |
|
'; |