| 6 |
|
# G. Ward |
| 7 |
|
# |
| 8 |
|
use strict; |
| 9 |
+ |
use File::Temp qw/ :mktemp /; |
| 10 |
|
sub userror { |
| 11 |
< |
print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-dim xmin xmax ymin ymax zmin zmax][{+|-}mgf][{+|-}geom] [input ..]"; |
| 11 |
> |
print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-r \"ropts\"][-dim xmin xmax ymin ymax zmin zmax][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom] [input ..]\n"; |
| 12 |
|
exit 1; |
| 13 |
|
} |
| 14 |
< |
my $td = `mktemp -d /tmp/genBSDF.XXXXXX`; |
| 14 |
> |
my $td = mkdtemp("/tmp/genBSDF.XXXXXX"); |
| 15 |
|
chomp $td; |
| 16 |
|
my $nsamp = 1000; |
| 17 |
+ |
my $rtargs = "-w -ab 5 -ad 700 -lw 3e-6"; |
| 18 |
|
my $mgfin = 0; |
| 19 |
|
my $geout = 1; |
| 20 |
|
my $nproc = 1; |
| 21 |
+ |
my $doforw = 0; |
| 22 |
+ |
my $doback = 1; |
| 23 |
|
my @dim; |
| 24 |
|
# Get options |
| 25 |
|
while ($#ARGV >= 0) { |
| 26 |
|
if ("$ARGV[0]" =~ /^[-+]m/) { |
| 27 |
|
$mgfin = ("$ARGV[0]" =~ /^\+/); |
| 28 |
+ |
} elsif ("$ARGV[0]" eq "-r") { |
| 29 |
+ |
$rtargs = "$rtargs $ARGV[1]"; |
| 30 |
+ |
shift @ARGV; |
| 31 |
|
} elsif ("$ARGV[0]" =~ /^[-+]g/) { |
| 32 |
|
$geout = ("$ARGV[0]" =~ /^\+/); |
| 33 |
+ |
} elsif ("$ARGV[0]" =~ /^[-+]f/) { |
| 34 |
+ |
$doforw = ("$ARGV[0]" =~ /^\+/); |
| 35 |
+ |
} elsif ("$ARGV[0]" =~ /^[-+]b/) { |
| 36 |
+ |
$doback = ("$ARGV[0]" =~ /^\+/); |
| 37 |
|
} elsif ("$ARGV[0]" eq "-c") { |
| 38 |
|
$nsamp = $ARGV[1]; |
| 39 |
|
shift @ARGV; |
| 42 |
|
shift @ARGV; |
| 43 |
|
} elsif ("$ARGV[0]" =~ /^-d/) { |
| 44 |
|
userror() if ($#ARGV < 6); |
| 45 |
< |
@dim = "@ARGV[1..6]"; |
| 45 |
> |
@dim = @ARGV[1..6]; |
| 46 |
|
shift @ARGV for (1..6); |
| 47 |
|
} elsif ("$ARGV[0]" =~ /^[-+]./) { |
| 48 |
|
userror(); |
| 51 |
|
} |
| 52 |
|
shift @ARGV; |
| 53 |
|
} |
| 54 |
+ |
# Check that we're actually being asked to do something |
| 55 |
+ |
die "Must have at least one of +forward or +backward" if (!$doforw && !$doback); |
| 56 |
|
# Get scene description and dimensions |
| 57 |
|
my $radscn = "$td/device.rad"; |
| 58 |
|
my $mgfscn = "$td/device.mgf"; |
| 62 |
|
die "Could not load MGF input\n" if ( $? ); |
| 63 |
|
system "mgf2rad $mgfscn > $radscn"; |
| 64 |
|
} else { |
| 65 |
< |
system "cat @ARGV | xform -e > $radscn"; |
| 65 |
> |
system "xform -e @ARGV > $radscn"; |
| 66 |
|
die "Could not load Radiance input\n" if ( $? ); |
| 67 |
|
system "rad2mgf $radscn > $mgfscn" if ( $geout ); |
| 68 |
|
} |
| 69 |
|
if ($#dim != 5) { |
| 70 |
< |
@dim = split /\s+/, `getbbox -h $radscn`; |
| 58 |
< |
shift @dim; |
| 70 |
> |
@dim = split ' ', `getbbox -h $radscn`; |
| 71 |
|
} |
| 72 |
|
print STDERR "Warning: Device extends into room\n" if ($dim[5] > 1e-5); |
| 73 |
< |
# Add receiver surface (rectangle) |
| 74 |
< |
my $modnm="_receiver_black_"; |
| 73 |
> |
# Add receiver surfaces (rectangular) |
| 74 |
> |
my $fmodnm="receiver_face"; |
| 75 |
> |
my $bmodnm="receiver_behind"; |
| 76 |
|
open(RADSCN, ">> $radscn"); |
| 77 |
< |
print RADSCN "void glow $modnm\n0\n0\n4 0 0 0 0\n\n"; |
| 78 |
< |
print RADSCN "$modnm polygon _receiver_\n0\n0\n12\n"; |
| 79 |
< |
print RADSCN "\t",$dim[0],"\t",$dim[2],"\t",$dim[5]+1e-5,"\n"; |
| 80 |
< |
print RADSCN "\t",$dim[0],"\t",$dim[3],"\t",$dim[5]+1e-5,"\n"; |
| 68 |
< |
print RADSCN "\t",$dim[1],"\t",$dim[3],"\t",$dim[5]+1e-5,"\n"; |
| 69 |
< |
print RADSCN "\t",$dim[1],"\t",$dim[2],"\t",$dim[5]+1e-5,"\n"; |
| 77 |
> |
print RADSCN "void glow $fmodnm\n0\n0\n4 1 1 1 0\n\n"; |
| 78 |
> |
print RADSCN "$fmodnm source f_receiver\n0\n0\n4 0 0 1 180\n"; |
| 79 |
> |
print RADSCN "void glow $bmodnm\n0\n0\n4 1 1 1 0\n\n"; |
| 80 |
> |
print RADSCN "$bmodnm source b_receiver\n0\n0\n4 0 0 -1 180\n"; |
| 81 |
|
close RADSCN; |
| 82 |
|
# Generate octree |
| 83 |
|
system "oconv -w $radscn > $octree"; |
| 84 |
|
die "Could not compile scene\n" if ( $? ); |
| 85 |
< |
# Set up sampling |
| 85 |
> |
# Set up sampling of interior portal |
| 86 |
|
# Kbin to produce incident direction in full Klems basis with (x1,x2) randoms |
| 87 |
|
my $tcal = ' |
| 88 |
|
DEGREE : PI/180; |
| 89 |
+ |
sq(x) : x*x; |
| 90 |
|
Kpola(r) : select(r+1, -5, 5, 15, 25, 35, 45, 55, 65, 75, 90); |
| 91 |
|
Knaz(r) : select(r, 1, 8, 16, 20, 24, 24, 24, 16, 12); |
| 92 |
|
Kaccum(r) : if(r-.5, Knaz(r) + Kaccum(r-1), 0); |
| 94 |
|
Kfindrow(r, rem) : if(rem-Knaz(r)+.5, Kfindrow(r+1, rem-Knaz(r)), r); |
| 95 |
|
Krow = if(Kbin-(Kmax-.5), 0, Kfindrow(1, Kbin)); |
| 96 |
|
Kcol = Kbin - Kaccum(Krow-1); |
| 97 |
< |
Kazi = 360*DEGREE * (Kcol + .5 - x2) / Knaz(Krow); |
| 97 |
> |
Kazi = 360*DEGREE * (Kcol + (.5 - x2)) / Knaz(Krow); |
| 98 |
|
Kpol = DEGREE * (x1*Kpola(Krow) + (1-x1)*Kpola(Krow-1)); |
| 99 |
|
sin_kpol = sin(Kpol); |
| 100 |
< |
Dx = -cos(Kazi)*sin_kpol; |
| 100 |
> |
Dx = cos(Kazi)*sin_kpol; |
| 101 |
|
Dy = sin(Kazi)*sin_kpol; |
| 102 |
|
Dz = sqrt(1 - sin_kpol*sin_kpol); |
| 103 |
+ |
KprojOmega = PI * if(Kbin-.5, |
| 104 |
+ |
(sq(cos(Kpola(Krow-1)*DEGREE)) - sq(cos(Kpola(Krow)*DEGREE)))/Knaz(Krow), |
| 105 |
+ |
1 - sq(cos(Kpola(1)*DEGREE))); |
| 106 |
|
'; |
| 107 |
< |
# Compute Klems bin from exiting ray direction |
| 107 |
> |
# Compute Klems bin from exiting ray direction (forward or backward) |
| 108 |
|
my $kcal = ' |
| 109 |
|
DEGREE : PI/180; |
| 110 |
+ |
abs(x) : if(x, x, -x); |
| 111 |
|
Acos(x) : 1/DEGREE * if(x-1, 0, if(-1-x, 0, acos(x))); |
| 112 |
|
posangle(a) : if(-a, a + 2*PI, a); |
| 113 |
|
Atan2(y,x) : 1/DEGREE * posangle(atan2(y,x)); |
| 128 |
|
kaccum(7) + kazn(azi,360/knaz(8)), |
| 129 |
|
kaccum(8) + kazn(azi,360/knaz(9)) |
| 130 |
|
); |
| 131 |
< |
kbin = kbin2(Acos(Dz), Atan2(Dy, -Dx)); |
| 131 |
> |
kbin = kbin2(Acos(abs(Dz)),Atan2(Dy,Dx)); |
| 132 |
|
'; |
| 133 |
|
my $ndiv = 145; |
| 134 |
|
my $nx = int(sqrt($nsamp*($dim[1]-$dim[0])/($dim[3]-$dim[2])) + .5); |
| 135 |
|
my $ny = int($nsamp/$nx + .5); |
| 136 |
|
$nsamp = $nx * $ny; |
| 137 |
+ |
# Compute scattering data using rtcontrib |
| 138 |
+ |
my @tfarr; |
| 139 |
+ |
my @rfarr; |
| 140 |
+ |
my @tbarr; |
| 141 |
+ |
my @rbarr; |
| 142 |
+ |
my $cmd; |
| 143 |
+ |
my $rtcmd = "rtcontrib -h -ff -fo -n $nproc -c $nsamp " . |
| 144 |
+ |
"-e '$kcal' -b kbin -bn $ndiv " . |
| 145 |
+ |
"-o '$td/%s.flt' -m $fmodnm -m $bmodnm $rtargs $octree"; |
| 146 |
+ |
my $rccmd = "rcalc -e '$tcal' " . |
| 147 |
+ |
"-e 'mod(n,d):n-floor(n/d)*d' -e 'Kbin=mod(recno-.999,$ndiv)' " . |
| 148 |
+ |
q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega'}; |
| 149 |
+ |
if ( $doforw ) { |
| 150 |
+ |
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
| 151 |
+ |
"-e 'xp=(\$3+rand(.12*recno+288))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
| 152 |
+ |
"-e 'yp=(\$2+rand(.37*recno-44))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
| 153 |
+ |
"-e 'zp:$dim[4]' " . |
| 154 |
+ |
q{-e 'Kbin=$1;x1=rand(2.75*recno+3.1);x2=rand(-2.01*recno-3.37)' } . |
| 155 |
+ |
q{-e '$1=xp-Dx;$2=yp-Dy;$3=zp-Dz;$4=Dx;$5=Dy;$6=Dz' } . |
| 156 |
+ |
"| $rtcmd"; |
| 157 |
+ |
system "$cmd" || die "Failure running: $cmd\n"; |
| 158 |
+ |
@tfarr = `$rccmd $td/$fmodnm.flt`; |
| 159 |
+ |
die "Failure running: $rccmd $td/$fmodnm.flt\n" if ( $? ); |
| 160 |
+ |
@rfarr = `$rccmd $td/$bmodnm.flt`; |
| 161 |
+ |
die "Failure running: $rccmd $td/$bmodnm.flt\n" if ( $? ); |
| 162 |
+ |
} |
| 163 |
+ |
if ( $doback ) { |
| 164 |
+ |
$cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
| 165 |
+ |
"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
| 166 |
+ |
"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
| 167 |
+ |
"-e 'zp:$dim[5]' " . |
| 168 |
+ |
q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } . |
| 169 |
+ |
q{-e '$1=xp-Dx;$2=yp-Dy;$3=zp+Dz;$4=Dx;$5=Dy;$6=-Dz' } . |
| 170 |
+ |
"| $rtcmd"; |
| 171 |
+ |
system "$cmd" || die "Failure running: $cmd\n"; |
| 172 |
+ |
@tbarr = `$rccmd $td/$bmodnm.flt`; |
| 173 |
+ |
die "Failure running: $rccmd $td/$bmodnm.flt\n" if ( $? ); |
| 174 |
+ |
@rbarr = `$rccmd $td/$fmodnm.flt`; |
| 175 |
+ |
die "Failure running: $rccmd $td/$fmodnm.flt\n" if ( $? ); |
| 176 |
+ |
} |
| 177 |
|
# Output XML prologue |
| 178 |
|
print |
| 179 |
|
'<?xml version="1.0" encoding="UTF-8"?> |
| 193 |
|
if ( $geout ) { |
| 194 |
|
print "\t\t\t<Geometry format=\"MGF\" unit=\"Meter\">\n"; |
| 195 |
|
printf "xf -t %.6f %.6f 0\n", -($dim[0]+$dim[1])/2, -($dim[2]+$dim[3])/2; |
| 196 |
< |
system "cat $mgfscn"; |
| 196 |
> |
open(MGFSCN, "< $mgfscn"); |
| 197 |
> |
while (<MGFSCN>) { print $_; } |
| 198 |
> |
close MGFSCN; |
| 199 |
|
print "xf\n"; |
| 200 |
|
print "\t\t\t</Geometry>\n"; |
| 201 |
|
} |
| 278 |
|
</AngleBasisBlock> |
| 279 |
|
</AngleBasis> |
| 280 |
|
</DataDefinition> |
| 281 |
< |
<WavelengthData> |
| 281 |
> |
'; |
| 282 |
> |
if ( $doforw ) { |
| 283 |
> |
print ' <WavelengthData> |
| 284 |
|
<LayerNumber>System</LayerNumber> |
| 285 |
|
<Wavelength unit="Integral">Visible</Wavelength> |
| 286 |
|
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
| 292 |
|
<ScatteringDataType>BTDF</ScatteringDataType> |
| 293 |
|
<ScatteringData> |
| 294 |
|
'; |
| 295 |
< |
# Compute actual scattering data using rtcontrib |
| 296 |
< |
system "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
| 297 |
< |
"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
| 298 |
< |
"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
| 299 |
< |
"-e 'zp:$dim[4]-1e-5' " . |
| 300 |
< |
q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } . |
| 301 |
< |
q{-e '$1=xp;$2=yp;$3=zp;$4=Dx;$5=Dy;$6=Dz' } . |
| 242 |
< |
"| rtcontrib -h -ff -n $nproc -c $nsamp -e '$kcal' -b kbin -bn $ndiv " . |
| 243 |
< |
"-m $modnm -w -ab 4 -lw 1e-5 $octree " . |
| 244 |
< |
q{| rcalc -if3 -e '$1=0.265*$1+0.670*$2+0.065*$3'}; |
| 245 |
< |
# Output XML epilogue |
| 295 |
> |
# Output front transmission (transposed order) |
| 296 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
| 297 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
| 298 |
> |
print $tfarr[$ndiv*$id + $od]; |
| 299 |
> |
} |
| 300 |
> |
print "\n"; |
| 301 |
> |
} |
| 302 |
|
print |
| 303 |
|
' </ScatteringData> |
| 304 |
|
</WavelengthDataBlock> |
| 305 |
|
</WavelengthData> |
| 306 |
< |
</Layer> |
| 306 |
> |
<WavelengthData> |
| 307 |
> |
<LayerNumber>System</LayerNumber> |
| 308 |
> |
<Wavelength unit="Integral">Visible</Wavelength> |
| 309 |
> |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
| 310 |
> |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
| 311 |
> |
<WavelengthDataBlock> |
| 312 |
> |
<WavelengthDataDirection>Reflection Front</WavelengthDataDirection> |
| 313 |
> |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
| 314 |
> |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
| 315 |
> |
<ScatteringDataType>BRDF</ScatteringDataType> |
| 316 |
> |
<ScatteringData> |
| 317 |
> |
'; |
| 318 |
> |
# Output front reflection (transposed order) |
| 319 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
| 320 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
| 321 |
> |
print $rfarr[$ndiv*$id + $od]; |
| 322 |
> |
} |
| 323 |
> |
print "\n"; |
| 324 |
> |
} |
| 325 |
> |
print |
| 326 |
> |
' </ScatteringData> |
| 327 |
> |
</WavelengthDataBlock> |
| 328 |
> |
</WavelengthData> |
| 329 |
> |
'; |
| 330 |
> |
} |
| 331 |
> |
if ( $doback ) { |
| 332 |
> |
print ' <WavelengthData> |
| 333 |
> |
<LayerNumber>System</LayerNumber> |
| 334 |
> |
<Wavelength unit="Integral">Visible</Wavelength> |
| 335 |
> |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
| 336 |
> |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
| 337 |
> |
<WavelengthDataBlock> |
| 338 |
> |
<WavelengthDataDirection>Transmission Back</WavelengthDataDirection> |
| 339 |
> |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
| 340 |
> |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
| 341 |
> |
<ScatteringDataType>BTDF</ScatteringDataType> |
| 342 |
> |
<ScatteringData> |
| 343 |
> |
'; |
| 344 |
> |
# Output back transmission (transposed order) |
| 345 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
| 346 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
| 347 |
> |
print $tbarr[$ndiv*$id + $od]; |
| 348 |
> |
} |
| 349 |
> |
print "\n"; |
| 350 |
> |
} |
| 351 |
> |
print |
| 352 |
> |
' </ScatteringData> |
| 353 |
> |
</WavelengthDataBlock> |
| 354 |
> |
</WavelengthData> |
| 355 |
> |
<WavelengthData> |
| 356 |
> |
<LayerNumber>System</LayerNumber> |
| 357 |
> |
<Wavelength unit="Integral">Visible</Wavelength> |
| 358 |
> |
<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum> |
| 359 |
> |
<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum> |
| 360 |
> |
<WavelengthDataBlock> |
| 361 |
> |
<WavelengthDataDirection>Reflection Back</WavelengthDataDirection> |
| 362 |
> |
<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis> |
| 363 |
> |
<RowAngleBasis>LBNL/Klems Full</RowAngleBasis> |
| 364 |
> |
<ScatteringDataType>BRDF</ScatteringDataType> |
| 365 |
> |
<ScatteringData> |
| 366 |
> |
'; |
| 367 |
> |
# Output back reflection (transposed order) |
| 368 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
| 369 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
| 370 |
> |
print $rbarr[$ndiv*$id + $od]; |
| 371 |
> |
} |
| 372 |
> |
print "\n"; |
| 373 |
> |
} |
| 374 |
> |
print |
| 375 |
> |
' </ScatteringData> |
| 376 |
> |
</WavelengthDataBlock> |
| 377 |
> |
</WavelengthData> |
| 378 |
> |
'; |
| 379 |
> |
} |
| 380 |
> |
# Output XML epilogue |
| 381 |
> |
print '</Layer> |
| 382 |
|
</Optical> |
| 383 |
|
</WindowElement> |
| 384 |
|
'; |
