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root/radiance/ray/src/util/genBSDF.pl
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Comparing ray/src/util/genBSDF.pl (file contents):
Revision 2.24 by greg, Tue Aug 23 14:02:41 2011 UTC vs.
Revision 2.34 by greg, Thu Mar 15 02:32:19 2012 UTC

# Line 8 | Line 8
8   use strict;
9   use File::Temp qw/ :mktemp  /;
10   sub userror {
11 <        print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-t{3|4} Nlog2][-r \"ropts\"][-dim xmin xmax ymin ymax zmin zmax][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom] [input ..]\n";
11 >        print STDERR "Usage: genBSDF [-n Nproc][-c Nsamp][-t{3|4} Nlog2][-r \"ropts\"][-dim xmin xmax ymin ymax zmin zmax][{+|-}f][{+|-}b][{+|-}mgf][{+|-}geom units] [input ..]\n";
12          exit 1;
13   }
14   my $td = mkdtemp("/tmp/genBSDF.XXXXXX");
# Line 16 | Line 16 | chomp $td;
16   my @savedARGV = @ARGV;
17   my $tensortree = 0;
18   my $ttlog2 = 4;
19 < my $nsamp = 10000;
19 > my $nsamp = 2000;
20   my $rtargs = "-w -ab 5 -ad 700 -lw 3e-6";
21   my $mgfin = 0;
22   my $geout = 1;
23   my $nproc = 1;
24   my $doforw = 0;
25   my $doback = 1;
26 + my $pctcull = 90;
27   my $gunit = "Meter";
28   my @dim;
29   # Get options
# Line 43 | Line 44 | while ($#ARGV >= 0) {
44                  $doforw = ("$ARGV[0]" =~ /^\+/);
45          } elsif ("$ARGV[0]" =~ /^[-+]b/) {
46                  $doback = ("$ARGV[0]" =~ /^\+/);
47 +        } elsif ("$ARGV[0]" eq "-t") {
48 +                # Use value < 0 for rttree_reduce bypass
49 +                $pctcull = $ARGV[1];
50 +                shift @ARGV;
51          } elsif ("$ARGV[0]" =~ /^-t[34]$/) {
52                  $tensortree = substr($ARGV[0], 2, 1);
53                  $ttlog2 = $ARGV[1];
# Line 149 | Line 154 | print
154   </WindowElement>
155   ';
156   # Clean up temporary files and exit
152 – if ( $persistfile && open(PFI, "< $persistfile") ) {
153 –        while (<PFI>) {
154 –                s/^[^ ]* //;
155 –                kill('ALRM', $_);
156 –                last;
157 –        }
158 –        close PFI;
159 – }
157   exec("rm -rf $td");
158  
159   #-------------- End of main program segment --------------#
160  
161 + #++++++++++++++ Kill persistent rtrace +++++++++++++++++++#
162 + sub persist_end {
163 +        if ( $persistfile && open(PFI, "< $persistfile") ) {
164 +                while (<PFI>) {
165 +                        s/^[^ ]* //;
166 +                        kill('ALRM', $_);
167 +                        last;
168 +                }
169 +                close PFI;
170 +        }
171 + }
172 +
173   #++++++++++++++ Tensor tree BSDF generation ++++++++++++++#
174   sub do_tree_bsdf {
175   # Get sampling rate and subdivide task
# Line 236 | Line 245 | if ( $doback ) {
245                  die "rtcontrib process reported error" if ( $? );
246                  $npleft++;
247          }
248 +        persist_end();
249          ttree_out(0);
250   }
251   if ( $doforw ) {
# Line 252 | Line 262 | if ( $doforw ) {
262                  die "rtcontrib process reported error" if ( $? );
263                  $npleft++;
264          }
265 +        persist_end();
266          ttree_out(1);
267   }
268   }       # end of sub do_tree_bsdf()
# Line 311 | Line 322 | sub bg_tree_rtcontrib {
322   sub ttree_out {
323          my $forw = shift;
324          my $side = ("Back","Front")[$forw];
325 +        my $cmd;
326   # Only output one transmitted distribution, preferring backwards
327   if ( !$forw || !$doback ) {
328   print
# Line 325 | Line 337 | print
337                          <ScatteringDataType>BTDF</ScatteringDataType>
338                          <ScatteringData>
339   ';
340 < system "rcalc -if3 -e 'Omega:PI/($ns*$ns)' " .
341 <        q{-e '$1=(0.265*$1+0.670*$2+0.065*$3)/Omega' -of } .
342 <        "$td/" . ($bmodnm,$fmodnm)[$forw] . "_???.flt " .
343 <        "| rttree_reduce -h -ff -r $tensortree -g $ttlog2";
344 < die "Failure running rttree_reduce" if ( $? );
340 > $cmd = "rcalc -if3 -e 'Omega:PI/($ns*$ns)' " .
341 >        q{-e '$1=(0.265*$1+0.670*$2+0.065*$3)/Omega' };
342 > if ($pctcull >= 0) {
343 >        $cmd .= "-of $td/" . ($bmodnm,$fmodnm)[$forw] . "_???.flt " .
344 >        "| rttree_reduce -a -h -ff -t $pctcull -r $tensortree -g $ttlog2";
345 >        system "$cmd" || die "Failure running rttree_reduce";
346 > } else {
347 >        $cmd .= "$td/" . ($bmodnm,$fmodnm)[$forw] . "_???.flt";
348 >        print "{\n";
349 >        system "$cmd" || die "Failure running rcalc";
350 >        for (my $i = ($tensortree==3)*$ns*$ns*$ns/2; $i-- > 0; ) {
351 >                print "0\n";
352 >        }
353 >        print "}\n";
354 > }
355   print
356   '                       </ScatteringData>
357                  </WavelengthDataBlock>
# Line 351 | Line 373 | print
373                          <ScatteringDataType>BRDF</ScatteringDataType>
374                          <ScatteringData>
375   ';
376 < system "rcalc -if3 -e 'Omega:PI/($ns*$ns)' " .
377 <        q{-e '$1=(0.265*$1+0.670*$2+0.065*$3)/Omega' -of } .
378 <        "$td/" . ($fmodnm,$bmodnm)[$forw] . "_???.flt " .
379 <        "| rttree_reduce -h -ff -r $tensortree -g $ttlog2";
380 < die "Failure running rttree_reduce" if ( $? );
376 > $cmd = "rcalc -if3 -e 'Omega:PI/($ns*$ns)' " .
377 >        q{-e '$1=(0.265*$1+0.670*$2+0.065*$3)/Omega' };
378 > if ($pctcull >= 0) {
379 >        $cmd .= "-of $td/" . ($fmodnm,$bmodnm)[$forw] . "_???.flt " .
380 >        "| rttree_reduce -a -h -ff -t $pctcull -r $tensortree -g $ttlog2";
381 >        system "$cmd" || die "Failure running rttree_reduce";
382 > } else {
383 >        $cmd .= "$td/" . ($fmodnm,$bmodnm)[$forw] . "_???.flt";
384 >        print "{\n";
385 >        system "$cmd" || die "Failure running rcalc";
386 >        for (my $i = ($tensortree==3)*$ns*$ns*$ns/2; $i-- > 0; ) {
387 >                print "0\n";
388 >        }
389 >        print "}\n";
390 > }
391   print
392   '                       </ScatteringData>
393                  </WavelengthDataBlock>
# Line 393 | Line 425 | KprojOmega = PI * if(Kbin-.5,
425   $kcal = '
426   DEGREE : PI/180;
427   abs(x) : if(x, x, -x);
428 < Acos(x) : 1/DEGREE * if(x-1, 0, if(-1-x, 0, acos(x)));
428 > Acos(x) : if(x-1, 0, if(-1-x, PI, acos(x))) / DEGREE;
429   posangle(a) : if(-a, a + 2*PI, a);
430 < Atan2(y,x) : 1/DEGREE * posangle(atan2(y,x));
430 > Atan2(y,x) : posangle(atan2(y,x)) / DEGREE;
431   kpola(r) : select(r, 5, 15, 25, 35, 45, 55, 65, 75, 90);
432   knaz(r) : select(r, 1, 8, 16, 20, 24, 24, 24, 16, 12);
433   kaccum(r) : if(r-.5, knaz(r) + kaccum(r-1), 0);
# Line 427 | Line 459 | my $rtcmd = "rtcontrib $rtargs -h -ff -fo -n $nproc -c
459          "-o '$td/%s.flt' -m $fmodnm -m $bmodnm $octree";
460   my $rccmd = "rcalc -e '$tcal' " .
461          "-e 'mod(n,d):n-floor(n/d)*d' -e 'Kbin=mod(recno-.999,$ndiv)' " .
462 <        q{-if3 -e 'oval=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega' } .
431 <        q[-o '${  oval  },'];
462 >        q{-if3 -e '$1=(0.265*$1+0.670*$2+0.065*$3)/KprojOmega' };
463   if ( $doforw ) {
464   $cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " .
465          "-e 'xp=(\$3+rand(.12*recno+288))*(($dim[1]-$dim[0])/$nx)+$dim[0]' " .
# Line 454 | Line 485 | $cmd = "cnt $ndiv $ny $nx | rcalc -of -e '$tcal' " .
485   system "$cmd" || die "Failure running: $cmd\n";
486   @tbarr = `$rccmd $td/$bmodnm.flt`;
487   die "Failure running: $rccmd $td/$bmodnm.flt\n" if ( $? );
488 + chomp(@tbarr);
489   @rbarr = `$rccmd $td/$fmodnm.flt`;
490   die "Failure running: $rccmd $td/$fmodnm.flt\n" if ( $? );
491 + chomp(@rbarr);
492   }
493   # Output angle basis
494   print
# Line 555 | Line 588 | print
588   # Output front transmission (transposed order)
589   for (my $od = 0; $od < $ndiv; $od++) {
590          for (my $id = 0; $id < $ndiv; $id++) {
591 <                print $tfarr[$ndiv*$id + $od];
591 >                print $tfarr[$ndiv*$id + $od], ",\n";
592          }
593          print "\n";
594   }
# Line 578 | Line 611 | print
611   # Output front reflection (transposed order)
612   for (my $od = 0; $od < $ndiv; $od++) {
613          for (my $id = 0; $id < $ndiv; $id++) {
614 <                print $rfarr[$ndiv*$id + $od];
614 >                print $rfarr[$ndiv*$id + $od], ",\n";
615          }
616          print "\n";
617   }
# Line 605 | Line 638 | print
638   # Output back transmission (transposed order)
639   for (my $od = 0; $od < $ndiv; $od++) {
640          for (my $id = 0; $id < $ndiv; $id++) {
641 <                print $tbarr[$ndiv*$id + $od];
641 >                print $tbarr[$ndiv*$id + $od], ",\n";
642          }
643          print "\n";
644   }
# Line 628 | Line 661 | print
661   # Output back reflection (transposed order)
662   for (my $od = 0; $od < $ndiv; $od++) {
663          for (my $id = 0; $id < $ndiv; $id++) {
664 <                print $rbarr[$ndiv*$id + $od];
664 >                print $rbarr[$ndiv*$id + $od], ",\n";
665          }
666          print "\n";
667   }

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