| 7 |
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# |
| 8 |
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use strict; |
| 9 |
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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 ..]"; |
| 10 |
> |
print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-dim xmin xmax ymin ymax zmin zmax][{+|-}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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# 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; |
| 78 |
+ |
sq(x) : x*x; |
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Kpola(r) : select(r+1, -5, 5, 15, 25, 35, 45, 55, 65, 75, 90); |
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Knaz(r) : select(r, 1, 8, 16, 20, 24, 24, 24, 16, 12); |
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Kaccum(r) : if(r-.5, Knaz(r) + Kaccum(r-1), 0); |
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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); |
| 92 |
< |
Komega = 2*PI*if(Kbin-.5, |
| 93 |
< |
(cos(Kpola(Krow-1)*DEGREE) - cos(Kpola(Krow)*DEGREE))/Knaz(Krow), |
| 94 |
< |
1 - cos(Kpola(1)*DEGREE)); |
| 92 |
> |
KprojOmega = PI * if(Kbin-.5, |
| 93 |
> |
(sq(cos(Kpola(Krow-1)*DEGREE)) - sq(cos(Kpola(Krow)*DEGREE)))/Knaz(Krow), |
| 94 |
> |
1 - sq(cos(Kpola(1)*DEGREE))); |
| 95 |
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'; |
| 96 |
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# Compute Klems bin from exiting ray direction |
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|
my $kcal = ' |
| 122 |
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my $nx = int(sqrt($nsamp*($dim[1]-$dim[0])/($dim[3]-$dim[2])) + .5); |
| 123 |
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my $ny = int($nsamp/$nx + .5); |
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$nsamp = $nx * $ny; |
| 125 |
+ |
# Compute scattering data using rtcontrib |
| 126 |
+ |
my $cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
| 127 |
+ |
"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
| 128 |
+ |
"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
| 129 |
+ |
"-e 'zp:$dim[4]-1e-5' " . |
| 130 |
+ |
q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } . |
| 131 |
+ |
q{-e '$1=xp;$2=yp;$3=zp;$4=Dx;$5=Dy;$6=Dz' } . |
| 132 |
+ |
"| rtcontrib -h -ff -n $nproc -c $nsamp -e '$kcal' -b kbin -bn $ndiv " . |
| 133 |
+ |
"-m $modnm -w -ab 5 -ad 700 -lw 3e-6 $octree " . |
| 134 |
+ |
"| rcalc -e '$tcal' " . |
| 135 |
+ |
"-e 'mod(n,d):n-floor(n/d)*d' -e 'Kbin=mod(recno-.999,$ndiv)' " . |
| 136 |
+ |
q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega'}; |
| 137 |
+ |
my @darr = `$cmd`; |
| 138 |
+ |
die "Failure running: $cmd\n" if ( $? ); |
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# Output XML prologue |
| 140 |
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print |
| 141 |
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'<?xml version="1.0" encoding="UTF-8"?> |
| 250 |
|
<ScatteringDataType>BTDF</ScatteringDataType> |
| 251 |
|
<ScatteringData> |
| 252 |
|
'; |
| 253 |
< |
# Compute actual scattering data using rtcontrib |
| 254 |
< |
system "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " . |
| 255 |
< |
"-e 'xp=(\$3+rand(.35*recno-15))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " . |
| 256 |
< |
"-e 'yp=(\$2+rand(.86*recno+11))*(($dim[3]-$dim[2])/$ny)+$dim[2]' " . |
| 257 |
< |
"-e 'zp:$dim[4]-1e-5' " . |
| 258 |
< |
q{-e 'Kbin=$1;x1=rand(1.21*recno+2.75);x2=rand(-3.55*recno-7.57)' } . |
| 259 |
< |
q{-e '$1=xp;$2=yp;$3=zp;$4=Dx;$5=Dy;$6=Dz' } . |
| 245 |
< |
"| rtcontrib -h -ff -n $nproc -c $nsamp -e '$kcal' -b kbin -bn $ndiv " . |
| 246 |
< |
"-m $modnm -w -ab 5 -ad 700 -lw 3e-6 $octree " . |
| 247 |
< |
"| rcalc -e 'x1:.5;x2:.5;$tcal' -e 'Kbin=floor((recno-1)/$ndiv)' " . |
| 248 |
< |
q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/(Komega*Dz)'}; |
| 253 |
> |
# Output computed data (transposed order) |
| 254 |
> |
for (my $od = 0; $od < $ndiv; $od++) { |
| 255 |
> |
for (my $id = 0; $id < $ndiv; $id++) { |
| 256 |
> |
print $darr[$ndiv*$id + $od]; |
| 257 |
> |
} |
| 258 |
> |
print "\n"; |
| 259 |
> |
} |
| 260 |
|
# Output XML epilogue |
| 261 |
|
print |
| 262 |
|
' </ScatteringData> |
