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# |
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# G. Ward |
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# |
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use strict; |
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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"; |
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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]" =~ /^-./) { |
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print STDERR, "Unknown option: $ARGV[0]\n"; |
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print STDERR "Unknown option: $ARGV[0]\n"; |
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exit 1; |
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} else { |
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last; |
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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; |
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K2 = cos(Kpol); |
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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 @vd, $_; |
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$_ = $vwset; s/^.*Vdz://; s/;.*$//; |
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push @vd, $_; |
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my @bcube = split /\s+/, `getinfo -d < $td/surf.oct`; |
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my @bcube = split ' ', `getinfo -d < $td/surf.oct`; |
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$width = $bcube[3]*sqrt(3); |
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$height = $width; |
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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]); |
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push @vopts, ("-vh", $width, "-vh", $height); |
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push @vopts, ("-vh", $width, "-vv", $height); |
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$vwset = `vwright @vopts V`; |
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$sca = sqrt($nsamp/($width*$height)); |
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my $xres; |
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my $yres; |
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my $ntot; |
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my $ntot = 0; |
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# This generally passes through the loop twice to get density right |
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do { |
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while ($ntot < $nsamp) { |
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$xres = int($width*$sca) + 1; |
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$yres = int($height*$sca) + 1; |
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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 > $td/origins.flt"; |
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$ntot = -s "$td/origins.flt"; |
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$ntot /= 3*4; |
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$ntot /= 3*4; # number of bytes per sample position |
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if ($ntot == 0) { |
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print STDERR, "View direction does not correspond to any surfaces\n"; |
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if ($nsamp < 200) { |
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$sca = sqrt(200/($width*$height)); |
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redo; |
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} |
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print STDERR "View direction does not correspond to any surfaces\n"; |
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exit 1; |
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} |
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$sca *= 1.05 * sqrt($nsamp/$ntot); |
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} while ($ntot < $nsamp); |
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} |
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# All set to produce our samples |
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for ($k = 1; $k <= $ndiv; $k++) { |
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for (my $k = 1; $k <= $ndiv; $k++) { |
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my $rn = rand(10); |
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my $r1 = rand; my $r2 = rand; |
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# Chance of using = (number_still_needed)/(number_left_avail) |
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"-e 'cond=($nsamp-outno+1)/($ntot-recno+1)-rand($rn+recno)' " . |
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"-e 'Kbin=$k;x1=rand($r1+recno);x2=rand($r2+recno)' " . |
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q{-e '$1=$1+Vo*Vdx; $2=$2+Vo*Vdy; $3=$3+Vo*Vdz' } . |
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q{-e '$4=K0*Vhx+K1*Vvx+K2*Vdx' } . |
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q{-e '$5=K0*Vhy+K1*Vvy+K2*Vdy' } . |
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q{-e '$6=K0*Vhz+K1*Vvz+K2*Vdz' } . |
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q{-e '$4=-K0*Vhx-K1*Vvx+K2*Vdx' } . |
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q{-e '$5=-K0*Vhy-K1*Vvy+K2*Vdy' } . |
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q{-e '$6=-K0*Vhz-K1*Vvz+K2*Vdz' } . |
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"-if3 $td/origins.flt"; |
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} |
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} else { |
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my $xres = int($width*$sca) + 1; |
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my $yres = int($height*$sca) + 1; |
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my $ntot = $xres * $yres; |
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for ($k = 1; $k <= $ndiv; $k++) { |
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for (my $k = 1; $k <= $ndiv; $k++) { |
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my $rn = rand(10); |
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my $r1 = rand; my $r2 = rand; |
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my $r3 = rand; my $r4 = rand; |
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q{-e '$1=Vpx+Vo*Vdx+hpos*Vhx+vpos*Vvx' } . |
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q{-e '$2=Vpy+Vo*Vdy+hpos*Vhy+vpos*Vvy' } . |
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q{-e '$3=Vpz+Vo*Vdz+hpos*Vhz+vpos*Vvz' } . |
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q{-e '$4=K0*Vhx+K1*Vvx+K2*Vdx' } . |
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q{-e '$5=K0*Vhy+K1*Vvy+K2*Vdy' } . |
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q{-e '$6=K0*Vhz+K1*Vvz+K2*Vdz' } ; |
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q{-e '$4=-K0*Vhx-K1*Vvx+K2*Vdx' } . |
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q{-e '$5=-K0*Vhy-K1*Vvy+K2*Vdy' } . |
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q{-e '$6=-K0*Vhz-K1*Vvz+K2*Vdz' } ; |
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} |
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} |
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system "rm -rf $td"; |