| 5 |
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# |
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# G. Ward |
| 7 |
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# |
| 8 |
+ |
use strict; |
| 9 |
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if ($#ARGV < 0) { |
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< |
print STDERR, "Usage: genklemsamp [-c N ][-f{a|f|d}] [view opts] [geom.rad ..]\n"; |
| 10 |
> |
print STDERR "Usage: genklemsamp [-c N ][-f{a|f|d}] [view opts] [geom.rad ..]\n"; |
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exit 1; |
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} |
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my $td = `mktemp -d /tmp/genklemsamp.XXXXXX`; |
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push @vopts, "@ARGV[0..1]"; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" =~ /^-v./) { |
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< |
print STDERR, "Unsupported view option: $ARGV[0]\n"; |
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> |
print STDERR "Unsupported view option: $ARGV[0]\n"; |
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exit 1; |
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} elsif ("$ARGV[0]" =~ /^-./) { |
| 34 |
< |
print STDERR, "Unknown option: $ARGV[0]\n"; |
| 34 |
> |
print STDERR "Unknown option: $ARGV[0]\n"; |
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exit 1; |
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} else { |
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last; |
| 63 |
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sin_kpol = sin(Kpol); |
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K0 = cos(Kazi)*sin_kpol; |
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K1 = sin(Kazi)*sin_kpol; |
| 66 |
< |
K2 = cos(Kpol); |
| 66 |
> |
K2 = sqrt(1 - sin_kpol*sin_kpol); |
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'; |
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my $ndiv = 145; |
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# Do we have any Radiance input files? |
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push @vopts, ("-vp", $bcube[0]+$bcube[3]/2-$width/2*$vd[0], |
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$bcube[1]+$bcube[3]/2-$width/2*$vd[1], |
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$bcube[2]+$bcube[3]/2-$width/2*$vd[2]); |
| 85 |
< |
push @vopts, ("-vh", $width, "-vh", $height); |
| 85 |
> |
push @vopts, ("-vh", $width, "-vv", $height); |
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|
$vwset = `vwright @vopts V`; |
| 87 |
+ |
$sca = sqrt($nsamp/($width*$height)); |
| 88 |
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my $xres; |
| 89 |
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my $yres; |
| 90 |
< |
my $ntot; |
| 90 |
> |
my $ntot = 0; |
| 91 |
|
# This generally passes through the loop twice to get density right |
| 92 |
< |
do { |
| 92 |
> |
while ($ntot < $nsamp) { |
| 93 |
|
$xres = int($width*$sca) + 1; |
| 94 |
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$yres = int($height*$sca) + 1; |
| 95 |
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system "vwrays -ff -x $xres -y $yres -pa 0 -pj .7 @vopts " . |
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q{-e 'nOK=sq(Vdx*$5+Vdy*$6+Vdz*$7)-.999' } . |
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"-if7 -of > $td/origins.flt"; |
| 101 |
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$ntot = -s "$td/origins.flt"; |
| 102 |
< |
$ntot /= 3*4; |
| 102 |
> |
$ntot /= 3*4; # number of bytes per sample position |
| 103 |
|
if ($ntot == 0) { |
| 104 |
< |
print STDERR, "View direction does not correspond to any surfaces\n"; |
| 104 |
> |
if ($nsamp < 200) { |
| 105 |
> |
$sca = sqrt(200/($width*$height)); |
| 106 |
> |
redo; |
| 107 |
> |
} |
| 108 |
> |
print STDERR "View direction does not correspond to any surfaces\n"; |
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exit 1; |
| 110 |
|
} |
| 111 |
|
$sca *= 1.05 * sqrt($nsamp/$ntot); |
| 112 |
< |
} while ($ntot < $nsamp); |
| 112 |
> |
} |
| 113 |
|
# All set to produce our samples |
| 114 |
< |
for ($k = 1; $k <= $ndiv; $k++) { |
| 114 |
> |
for (my $k = 1; $k <= $ndiv; $k++) { |
| 115 |
|
my $rn = rand(10); |
| 116 |
|
my $r1 = rand; my $r2 = rand; |
| 117 |
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# Chance of using = (number_still_needed)/(number_left_avail) |
| 119 |
|
"-e 'cond=($nsamp-outno+1)/($ntot-recno+1)-rand($rn+recno)' " . |
| 120 |
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"-e 'Kbin=$k;x1=rand($r1+recno);x2=rand($r2+recno)' " . |
| 121 |
|
q{-e '$1=$1+Vo*Vdx; $2=$2+Vo*Vdy; $3=$3+Vo*Vdz' } . |
| 122 |
< |
q{-e '$4=K0*Vhx+K1*Vvx+K2*Vdx' } . |
| 123 |
< |
q{-e '$5=K0*Vhy+K1*Vvy+K2*Vdy' } . |
| 124 |
< |
q{-e '$6=K0*Vhz+K1*Vvz+K2*Vdz' } . |
| 122 |
> |
q{-e '$4=K0*Vhx-K1*Vvx+K2*Vdx' } . |
| 123 |
> |
q{-e '$5=K0*Vhy-K1*Vvy+K2*Vdy' } . |
| 124 |
> |
q{-e '$6=K0*Vhz-K1*Vvz+K2*Vdz' } . |
| 125 |
|
"-if3 $td/origins.flt"; |
| 126 |
|
} |
| 127 |
|
} else { |
| 129 |
|
my $xres = int($width*$sca) + 1; |
| 130 |
|
my $yres = int($height*$sca) + 1; |
| 131 |
|
my $ntot = $xres * $yres; |
| 132 |
< |
for ($k = 1; $k <= $ndiv; $k++) { |
| 132 |
> |
for (my $k = 1; $k <= $ndiv; $k++) { |
| 133 |
|
my $rn = rand(10); |
| 134 |
|
my $r1 = rand; my $r2 = rand; |
| 135 |
|
my $r3 = rand; my $r4 = rand; |
| 143 |
|
q{-e '$1=Vpx+Vo*Vdx+hpos*Vhx+vpos*Vvx' } . |
| 144 |
|
q{-e '$2=Vpy+Vo*Vdy+hpos*Vhy+vpos*Vvy' } . |
| 145 |
|
q{-e '$3=Vpz+Vo*Vdz+hpos*Vhz+vpos*Vvz' } . |
| 146 |
< |
q{-e '$4=K0*Vhx+K1*Vvx+K2*Vdx' } . |
| 147 |
< |
q{-e '$5=K0*Vhy+K1*Vvy+K2*Vdy' } . |
| 148 |
< |
q{-e '$6=K0*Vhz+K1*Vvz+K2*Vdz' } ; |
| 146 |
> |
q{-e '$4=K0*Vhx-K1*Vvx+K2*Vdx' } . |
| 147 |
> |
q{-e '$5=K0*Vhy-K1*Vvy+K2*Vdy' } . |
| 148 |
> |
q{-e '$6=K0*Vhz-K1*Vvz+K2*Vdz' } ; |
| 149 |
|
} |
| 150 |
|
} |
| 151 |
|
system "rm -rf $td"; |