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root/radiance/ray/src/util/genskyvec.pl
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Comparing ray/src/util/genskyvec.pl (file contents):
Revision 2.1 by greg, Thu Jul 2 02:13:08 2009 UTC vs.
Revision 2.9 by greg, Wed Sep 17 22:40:49 2014 UTC

# Line 6 | Line 6
6   #       G. Ward
7   #
8   use strict;
9 + my $windoz = ($^O eq "MSWin32" or $^O eq "MSWin64");
10   my @skycolor = (0.960, 1.004, 1.118);
11 + my $mf = 4;
12 + my $dosky = 1;
13 + my $headout = 1;
14 + my @origARGV = @ARGV;
15   while ($#ARGV >= 0) {
16          if ("$ARGV[0]" eq "-c") {
17                  @skycolor = @ARGV[1..3];
18 <                shift @ARGV; shift @ARGV; shift @ARGV;
18 >                shift @ARGV for (1..3);
19 >        } elsif ("$ARGV[0]" eq "-m") {
20 >                $mf = $ARGV[1];
21 >                shift @ARGV;
22 >        } elsif ("$ARGV[0]" eq "-d") {
23 >                $dosky = 0;
24 >        } elsif ("$ARGV[0]" eq "-h") {
25 >                $headout = 0;
26          }
27          shift @ARGV;
28   }
# Line 28 | Line 40 | while (<>) {
40                  $srcmod = $_;
41                  $lightline = $#skydesc;
42          } elsif (defined($srcmod) && /^($srcmod)\s+source\s/) {
43 <                @sunval = split(/\s+/, $skydesc[$lightline + 3]);
43 >                @sunval = split(' ', $skydesc[$lightline + 3]);
44                  shift @sunval;
45                  $sunline = $#skydesc;
46          } elsif (/\sskyfunc\s*$/) {
# Line 39 | Line 51 | die "Bad sky description!\n" if (! $skyOK);
51   # Strip out the solar source if present
52   my @sundir;
53   if (defined $sunline) {
54 <        @sundir = split(/\s+/, $skydesc[$sunline + 3]);
54 >        @sundir = split(' ', $skydesc[$sunline + 3]);
55          shift @sundir;
56          undef @sundir if ($sundir[2] <= 0);
57          splice(@skydesc, $sunline, 5);
58   }
59   # Reinhart sky sample generator
60 < my $rhcal = '
61 < DEGREE : PI/180;
62 < x1 = .5; x2 = .5;
63 < MF : 2^2;
64 < alpha : 90/(MF*7 + .5);
65 < tnaz(r) : select(r, 30, 30, 24, 24, 18, 12, 6);
66 < rnaz(r) : if(r-(7*MF-.5), 1, MF*tnaz(floor((r+.5)/MF) + 1));
67 < raccum(r) : if(r-.5, rnaz(r-1) + raccum(r-1), 0);
68 < RowMax : 7*MF + 1;
69 < Rmax : raccum(RowMax);
70 < Rfindrow(r, rem) : if(rem-rnaz(r)-.5, Rfindrow(r+1, rem-rnaz(r)), r);
71 < Rrow = if(Rbin-(Rmax +.5), RowMax, Rfindrow(0, Rbin));
72 < Rcol = Rbin - raccum(Rrow) - 1;
73 < Razi_width = 2*PI / rnaz(Rrow);
74 < RAH : alpha*DEGREE;
75 < Razi = if(Rbin-.5, (Rcol + x2 - .5)*Razi_width, 2*PI*x2);
76 < Ralt = if(Rbin-.5, (Rrow + x1)*RAH, asin(2*x1-1));
77 < Romega = if(.5-Rbin, 2*PI, if(Rmax-.5-Rbin,
78 <        Razi_width*(sin(RAH*(Rrow+1)) - sin(RAH*Rrow)),
79 <        2*PI*(1 - cos(RAH/2)) ) );
80 < cos_ralt = cos(Ralt);
81 < Dx = sin(Razi)*cos_ralt;
82 < Dy = cos(Razi)*cos_ralt;
83 < Dz = sin(Ralt);
84 < ';
85 < my $nbins = 2306;       # This needs to be consistent with MF setting above
86 < # Create octree for rtrace
87 < my $octree = "/tmp/gtv$$.oct";
88 < open OCONV, "| oconv - > $octree";
89 < print OCONV @skydesc;
90 < print OCONV "skyfunc glow skyglow 0 0 4 @skycolor 0\n";
91 < print OCONV "skyglow source sky 0 0 4 0 0 1 360\n";
92 < close OCONV;
93 < # Run rtrace and average output for every 16 samples
94 < my $tregcommand = "cnt $nbins 16 | rcalc -of -e '$rhcal' " .
95 <        q{-e 'Rbin=$1;x1=rand(recno*.37-5.3);x2=rand(recno*-1.47+.86)' } .
96 <        q{-e '$1=0;$2=0;$3=0;$4=Dx;$5=Dy;$6=Dz' } .
97 <        "| rtrace -h -ff -ab 0 -w $octree | total -if3 -16 -m";
98 < my @tregval = `$tregcommand`;
99 < unlink $octree;
60 > my $rhcal = 'DEGREE : PI/180;' .
61 >        'x1 = .5; x2 = .5;' .
62 >        'alpha : 90/(MF*7 + .5);' .
63 >        'tnaz(r) : select(r, 30, 30, 24, 24, 18, 12, 6);' .
64 >        'rnaz(r) : if(r-(7*MF-.5), 1, MF*tnaz(floor((r+.5)/MF) + 1));' .
65 >        'raccum(r) : if(r-.5, rnaz(r-1) + raccum(r-1), 0);' .
66 >        'RowMax : 7*MF + 1;' .
67 >        'Rmax : raccum(RowMax);' .
68 >        'Rfindrow(r, rem) : if(rem-rnaz(r)-.5, Rfindrow(r+1, rem-rnaz(r)), r);' .
69 >        'Rrow = if(Rbin-(Rmax-.5), RowMax-1, Rfindrow(0, Rbin));' .
70 >        'Rcol = Rbin - raccum(Rrow) - 1;' .
71 >        'Razi_width = 2*PI / rnaz(Rrow);' .
72 >        'RAH : alpha*DEGREE;' .
73 >        'Razi = if(Rbin-.5, (Rcol + x2 - .5)*Razi_width, 2*PI*x2);' .
74 >        'Ralt = if(Rbin-.5, (Rrow + x1)*RAH, asin(-x1));' .
75 >        'Romega = if(.5-Rbin, 2*PI, if(Rmax-.5-Rbin, ' .
76 >        '       Razi_width*(sin(RAH*(Rrow+1)) - sin(RAH*Rrow)),' .
77 >        '       2*PI*(1 - cos(RAH/2)) ) );' .
78 >        'cos_ralt = cos(Ralt);' .
79 >        'Dx = sin(Razi)*cos_ralt;' .
80 >        'Dy = cos(Razi)*cos_ralt;' .
81 >        'Dz = sin(Ralt);' ;
82 > my ($nbins, $octree, $tregcommand, $suncmd);
83 > if ($windoz) {
84 >        $nbins = `rcalc -n -e MF:$mf -e \"$rhcal\" -e \"\$1=Rmax+1\"`;
85 >        chomp $nbins;
86 >        $octree = "gtv$$.oct";
87 >        $tregcommand = "cnt $nbins 16 | rcalc -e MF:$mf -e \"$rhcal\" " .
88 >                q{-e "Rbin=$1;x1=rand(recno*.37-5.3);x2=rand(recno*-1.47+.86)" } .
89 >                q{-e "$1=0;$2=0;$3=0;$4=Dx;$5=Dy;$6=Dz" } .
90 >                "| rtrace -h -ab 0 -w $octree | total -16 -m";
91 >        if (@sundir) {
92 >                $suncmd = "cnt " . ($nbins-1) .
93 >                        " | rcalc -e MF:$mf -e \"$rhcal\" -e Rbin=recno " .
94 >                        "-e \"dot=Dx*$sundir[0] + Dy*$sundir[1] + Dz*$sundir[2]\" " .
95 >                        "-e \"cond=dot-.866\" " .
96 >                        q{-e "$1=if(1-dot,acos(dot),0);$2=Romega;$3=recno" };
97 >        }
98 > } else {
99 >        $nbins = `rcalc -n -e MF:$mf -e \'$rhcal\' -e \'\$1=Rmax+1\'`;
100 >        chomp $nbins;
101 >        $octree = "/tmp/gtv$$.oct";
102 >        $tregcommand = "cnt $nbins 16 | rcalc -of -e MF:$mf -e '$rhcal' " .
103 >                q{-e 'Rbin=$1;x1=rand(recno*.37-5.3);x2=rand(recno*-1.47+.86)' } .
104 >                q{-e '$1=0;$2=0;$3=0;$4=Dx;$5=Dy;$6=Dz' } .
105 >                "| rtrace -h -ff -ab 0 -w $octree | total -if3 -16 -m";
106 >        if (@sundir) {
107 >                $suncmd = "cnt " . ($nbins-1) .
108 >                        " | rcalc -e MF:$mf -e '$rhcal' -e Rbin=recno " .
109 >                        "-e 'dot=Dx*$sundir[0] + Dy*$sundir[1] + Dz*$sundir[2]' " .
110 >                        "-e 'cond=dot-.866' " .
111 >                        q{-e '$1=if(1-dot,acos(dot),0);$2=Romega;$3=recno' };
112 >        }
113 > }
114 > my @tregval;
115 > if ($dosky) {
116 >        # Create octree for rtrace
117 >        open OCONV, "| oconv - > $octree";
118 >        print OCONV @skydesc;
119 >        print OCONV "skyfunc glow skyglow 0 0 4 @skycolor 0\n";
120 >        print OCONV "skyglow source sky 0 0 4 0 0 1 360\n";
121 >        close OCONV;
122 >        # Run rtrace and average output for every 16 samples
123 >        @tregval = `$tregcommand`;
124 >        unlink $octree;
125 > } else {
126 >        push @tregval, "0\t0\t0\n" for (1..$nbins);
127 > }
128   # Find closest 3 patches to sun and divvy up direct solar contribution
129 < my @bestdir;
129 > sub numSort1 {
130 >        my @a1 = split("\t", $a);
131 >        my @b1 = split("\t", $b);
132 >        return ($a1[0] <=> $b1[0]);
133 > }
134   if (@sundir) {
135          my $somega = ($sundir[3]/360)**2 * 3.141592654**3;
136 <        my $cmd = "cnt $nbins | rcalc -e '$rhcal' -e Rbin=recno " .
137 <                "-e 'dot=Dx*$sundir[0] + Dy*$sundir[1] + Dz*$sundir[2]' " .
94 <                "-e 'cond=dot-.866' " .
95 <                q{-e '$1=if(1-dot,acos(dot),0);$2=Romega;$3=recno' };
96 <        @bestdir = `$cmd | sort -n | head -3`;
136 >        my @bestdir = `$suncmd`;
137 >        @bestdir = sort numSort1 @bestdir;
138          my (@ang, @dom, @ndx);
139          my $wtot = 0;
140          for my $i (0..2) {
141 <                ($ang[$i], $dom[$i], $ndx[$i]) = split(/\s+/, $bestdir[$i]);
141 >                ($ang[$i], $dom[$i], $ndx[$i]) = split(' ', $bestdir[$i]);
142                  $wtot += 1./($ang[$i]+.02);
143          }
144          for my $i (0..2) {
145                  my $wt = 1./($ang[$i]+.02)/$wtot * $somega / $dom[$i];
146 <                my @scolor = split(/\s+/, $tregval[$ndx[$i]]);
146 >                my @scolor = split(' ', $tregval[$ndx[$i]]);
147                  for my $j (0..2) { $scolor[$j] += $wt * $sunval[$j]; }
148 <                $tregval[$ndx[$i]] = "@scolor\n";
148 >                $tregval[$ndx[$i]] = "$scolor[0]\t$scolor[1]\t$scolor[2]\n";
149          }
150 + }
151 + # Output header if requested
152 + if ($headout) {
153 +        print "#?RADIANCE\n";
154 +        print "genskyvec @origARGV\n";
155 +        print "NROWS=", $#tregval+1, "\n";
156 +        print "NCOLS=1\nNCOMP=3\n";
157 +        print "FORMAT=ascii\n";
158 +        print "\n";
159   }
160   # Output our final vector
161   print @tregval;

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