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root/radiance/ray/src/util/genskyvec.pl
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Comparing ray/src/util/genskyvec.pl (file contents):
Revision 2.4 by greg, Sat Jan 23 22:30:29 2010 UTC vs.
Revision 2.11 by greg, Tue Jun 5 01:25:11 2018 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 $dofive = 0;
14 + my $headout = 1;
15 + my @origARGV = @ARGV;
16   while ($#ARGV >= 0) {
17          if ("$ARGV[0]" eq "-c") {
18                  @skycolor = @ARGV[1..3];
19 <                shift @ARGV; shift @ARGV; shift @ARGV;
19 >                shift @ARGV for (1..3);
20          } elsif ("$ARGV[0]" eq "-m") {
21                  $mf = $ARGV[1];
22                  shift @ARGV;
23 +        } elsif ("$ARGV[0]" eq "-d") {
24 +                $dosky = 0;
25 +        } elsif ("$ARGV[0]" eq "-5") {
26 +                $dofive = 1;
27 +        } elsif ("$ARGV[0]" eq "-h") {
28 +                $headout = 0;
29 +        } else {
30 +                die "Unexpected command-line argument: $ARGV[0]\n";
31          }
32          shift @ARGV;
33   }
# Line 32 | Line 45 | while (<>) {
45                  $srcmod = $_;
46                  $lightline = $#skydesc;
47          } elsif (defined($srcmod) && /^($srcmod)\s+source\s/) {
48 <                @sunval = split(/\s+/, $skydesc[$lightline + 3]);
48 >                @sunval = split(' ', $skydesc[$lightline + 3]);
49                  shift @sunval;
50                  $sunline = $#skydesc;
51          } elsif (/\sskyfunc\s*$/) {
# Line 43 | Line 56 | die "Bad sky description!\n" if (! $skyOK);
56   # Strip out the solar source if present
57   my @sundir;
58   if (defined $sunline) {
59 <        @sundir = split(/\s+/, $skydesc[$sunline + 3]);
59 >        @sundir = split(' ', $skydesc[$sunline + 3]);
60          shift @sundir;
61          undef @sundir if ($sundir[2] <= 0);
62          splice(@skydesc, $sunline, 5);
63   }
64   # Reinhart sky sample generator
65 < my $rhcal = '
66 < DEGREE : PI/180;
67 < x1 = .5; x2 = .5;
68 < alpha : 90/(MF*7 + .5);
69 < tnaz(r) : select(r, 30, 30, 24, 24, 18, 12, 6);
70 < rnaz(r) : if(r-(7*MF-.5), 1, MF*tnaz(floor((r+.5)/MF) + 1));
71 < raccum(r) : if(r-.5, rnaz(r-1) + raccum(r-1), 0);
72 < RowMax : 7*MF + 1;
73 < Rmax : raccum(RowMax);
74 < Rfindrow(r, rem) : if(rem-rnaz(r)-.5, Rfindrow(r+1, rem-rnaz(r)), r);
75 < Rrow = if(Rbin-(Rmax-.5), RowMax-1, Rfindrow(0, Rbin));
76 < Rcol = Rbin - raccum(Rrow) - 1;
77 < Razi_width = 2*PI / rnaz(Rrow);
78 < RAH : alpha*DEGREE;
79 < Razi = if(Rbin-.5, (Rcol + x2 - .5)*Razi_width, 2*PI*x2);
80 < Ralt = if(Rbin-.5, (Rrow + x1)*RAH, asin(-x1));
81 < Romega = if(.5-Rbin, 2*PI, if(Rmax-.5-Rbin,
82 <        Razi_width*(sin(RAH*(Rrow+1)) - sin(RAH*Rrow)),
83 <        2*PI*(1 - cos(RAH/2)) ) );
84 < cos_ralt = cos(Ralt);
85 < Dx = sin(Razi)*cos_ralt;
86 < Dy = cos(Razi)*cos_ralt;
87 < Dz = sin(Ralt);
88 < ';
89 < my $nbins = `rcalc -n -e MF:$mf -e \'$rhcal\' -e \'\$1=Rmax+1\'`;
90 < chomp $nbins;
91 < # Create octree for rtrace
92 < my $octree = "/tmp/gtv$$.oct";
93 < open OCONV, "| oconv - > $octree";
94 < print OCONV @skydesc;
95 < print OCONV "skyfunc glow skyglow 0 0 4 @skycolor 0\n";
96 < print OCONV "skyglow source sky 0 0 4 0 0 1 360\n";
97 < close OCONV;
98 < # Run rtrace and average output for every 16 samples
99 < my $tregcommand = "cnt $nbins 16 | rcalc -of -e MF:$mf -e '$rhcal' " .
100 <        q{-e 'Rbin=$1;x1=rand(recno*.37-5.3);x2=rand(recno*-1.47+.86)' } .
101 <        q{-e '$1=0;$2=0;$3=0;$4=Dx;$5=Dy;$6=Dz' } .
89 <        "| rtrace -h -ff -ab 0 -w $octree | total -if3 -16 -m";
90 < my @tregval = `$tregcommand`;
91 < unlink $octree;
92 < # Find closest 3 patches to sun and divvy up direct solar contribution
93 < my @bestdir;
94 < if (@sundir) {
95 <        my $somega = ($sundir[3]/360)**2 * 3.141592654**3;
96 <        my $cmd = "cnt " . ($nbins-1) .
97 <                " | rcalc -e MF:$mf -e '$rhcal' -e Rbin=recno " .
98 <                "-e 'dot=Dx*$sundir[0] + Dy*$sundir[1] + Dz*$sundir[2]' " .
99 <                "-e 'cond=dot-.866' " .
100 <                q{-e '$1=if(1-dot,acos(dot),0);$2=Romega;$3=recno' };
101 <        @bestdir = `$cmd | sort -n | head -3`;
102 <        my (@ang, @dom, @ndx);
103 <        my $wtot = 0;
104 <        for my $i (0..2) {
105 <                ($ang[$i], $dom[$i], $ndx[$i]) = split(/\s+/, $bestdir[$i]);
106 <                $wtot += 1./($ang[$i]+.02);
65 > my $rhcal = 'DEGREE : PI/180;' .
66 >        'x1 = .5; x2 = .5;' .
67 >        'alpha : 90/(MF*7 + .5);' .
68 >        'tnaz(r) : select(r, 30, 30, 24, 24, 18, 12, 6);' .
69 >        'rnaz(r) : if(r-(7*MF-.5), 1, MF*tnaz(floor((r+.5)/MF) + 1));' .
70 >        'raccum(r) : if(r-.5, rnaz(r-1) + raccum(r-1), 0);' .
71 >        'RowMax : 7*MF + 1;' .
72 >        'Rmax : raccum(RowMax);' .
73 >        'Rfindrow(r, rem) : if(rem-rnaz(r)-.5, Rfindrow(r+1, rem-rnaz(r)), r);' .
74 >        'Rrow = if(Rbin-(Rmax-.5), RowMax-1, Rfindrow(0, Rbin));' .
75 >        'Rcol = Rbin - raccum(Rrow) - 1;' .
76 >        'Razi_width = 2*PI / rnaz(Rrow);' .
77 >        'RAH : alpha*DEGREE;' .
78 >        'Razi = if(Rbin-.5, (Rcol + x2 - .5)*Razi_width, 2*PI*x2);' .
79 >        'Ralt = if(Rbin-.5, (Rrow + x1)*RAH, asin(-x1));' .
80 >        'Romega = if(.5-Rbin, 2*PI, if(Rmax-.5-Rbin, ' .
81 >        '       Razi_width*(sin(RAH*(Rrow+1)) - sin(RAH*Rrow)),' .
82 >        '       2*PI*(1 - cos(RAH/2)) ) );' .
83 >        'cos_ralt = cos(Ralt);' .
84 >        'Dx = sin(Razi)*cos_ralt;' .
85 >        'Dy = cos(Razi)*cos_ralt;' .
86 >        'Dz = sin(Ralt);' ;
87 > my ($nbins, $octree, $tregcommand, $suncmd);
88 > if ($windoz) {
89 >        $nbins = `rcalc -n -e MF:$mf -e \"$rhcal\" -e \"\$1=Rmax+1\"`;
90 >        chomp $nbins;
91 >        $octree = "gtv$$.oct";
92 >        $tregcommand = "cnt $nbins 16 | rcalc -e MF:$mf -e \"$rhcal\" " .
93 >                q{-e "Rbin=$1;x1=rand(recno*.37-5.3);x2=rand(recno*-1.47+.86)" } .
94 >                q{-e "$1=0;$2=0;$3=0;$4=Dx;$5=Dy;$6=Dz" } .
95 >                "| rtrace -h -ab 0 -w $octree | total -16 -m";
96 >        if (@sundir) {
97 >                $suncmd = "cnt " . ($nbins-1) .
98 >                        " | rcalc -e MF:$mf -e \"$rhcal\" -e Rbin=recno " .
99 >                        "-e \"dot=Dx*$sundir[0] + Dy*$sundir[1] + Dz*$sundir[2]\" " .
100 >                        "-e \"cond=dot-.866\" " .
101 >                        q{-e "$1=if(1-dot,acos(dot),0);$2=Romega;$3=recno" };
102          }
103 <        for my $i (0..2) {
104 <                my $wt = 1./($ang[$i]+.02)/$wtot * $somega / $dom[$i];
105 <                my @scolor = split(/\s+/, $tregval[$ndx[$i]]);
106 <                for my $j (0..2) { $scolor[$j] += $wt * $sunval[$j]; }
107 <                $tregval[$ndx[$i]] = "$scolor[0]\t$scolor[1]\t$scolor[2]\n";
103 > } else {
104 >        $nbins = `rcalc -n -e MF:$mf -e \'$rhcal\' -e \'\$1=Rmax+1\'`;
105 >        chomp $nbins;
106 >        $octree = "/tmp/gtv$$.oct";
107 >        $tregcommand = "cnt $nbins 16 | rcalc -of -e MF:$mf -e '$rhcal' " .
108 >                q{-e 'Rbin=$1;x1=rand(recno*.37-5.3);x2=rand(recno*-1.47+.86)' } .
109 >                q{-e '$1=0;$2=0;$3=0;$4=Dx;$5=Dy;$6=Dz' } .
110 >                "| rtrace -h -ff -ab 0 -w $octree | total -if3 -16 -m";
111 >        if (@sundir) {
112 >                $suncmd = "cnt " . ($nbins-1) .
113 >                        " | rcalc -e MF:$mf -e '$rhcal' -e Rbin=recno " .
114 >                        "-e 'dot=Dx*$sundir[0] + Dy*$sundir[1] + Dz*$sundir[2]' " .
115 >                        "-e 'cond=dot-.866' " .
116 >                        q{-e '$1=if(1-dot,acos(dot),0);$2=Romega;$3=recno' };
117          }
118 + }
119 + my @tregval;
120 + if ($dosky) {
121 +        # Create octree for rtrace
122 +        open OCONV, "| oconv - > $octree";
123 +        print OCONV @skydesc;
124 +        print OCONV "skyfunc glow skyglow 0 0 4 @skycolor 0\n";
125 +        print OCONV "skyglow source sky 0 0 4 0 0 1 360\n";
126 +        close OCONV;
127 +        # Run rtrace and average output for every 16 samples
128 +        @tregval = `$tregcommand`;
129 +        unlink $octree;
130 + } else {
131 +        push @tregval, "0\t0\t0\n" for (1..$nbins);
132 + }
133 + # Find closest patch(es) to sun and divvy up direct solar contribution
134 + sub numSort1 {
135 +        my @a1 = split("\t", $a);
136 +        my @b1 = split("\t", $b);
137 +        return ($a1[0] <=> $b1[0]);
138 + }
139 + if (@sundir) {
140 +        my @bestdir = `$suncmd`;
141 +        @bestdir = sort numSort1 @bestdir;
142 +        if ($dofive) {
143 +                my ($ang, $dom, $ndx);
144 +                ($ang, $dom, $ndx) = split(' ', $bestdir[0]);
145 +                $tregval[$ndx] = "$sunval[0]\t$sunval[1]\t$sunval[2]\n";
146 +        } else {
147 +                my (@ang, @dom, @ndx);
148 +                my $somega = ($sundir[3]/360)**2 * 3.141592654**3;
149 +                my $wtot = 0;
150 +                for my $i (0..2) {
151 +                        ($ang[$i], $dom[$i], $ndx[$i]) = split(' ', $bestdir[$i]);
152 +                        $wtot += 1./($ang[$i]+.02);
153 +                }
154 +                for my $i (0..2) {
155 +                        my $wt = 1./($ang[$i]+.02)/$wtot * $somega / $dom[$i];
156 +                        my @scolor = split(' ', $tregval[$ndx[$i]]);
157 +                        for my $j (0..2) { $scolor[$j] += $wt * $sunval[$j]; }
158 +                        $tregval[$ndx[$i]] = "$scolor[0]\t$scolor[1]\t$scolor[2]\n";
159 +                }
160 +        }
161 + }
162 + # Output header if requested
163 + if ($headout) {
164 +        print "#?RADIANCE\n";
165 +        print "genskyvec @origARGV\n";
166 +        print "NROWS=", $#tregval+1, "\n";
167 +        print "NCOLS=1\nNCOMP=3\n";
168 +        print "FORMAT=ascii\n";
169 +        print "\n";
170   }
171   # Output our final vector
172   print @tregval;

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