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greg |
2.1 |
#!/usr/bin/perl |
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# |
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# Make an interactive preview of a luminaire |
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# |
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# This script is based on Radiance's objview.pl plus |
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# Rob Guglielmetti's ltview extension to his objview.rb |
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# |
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# Written by Axel Jacobs <[email protected]> |
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use strict; |
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use warnings; |
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use Math::Trig; |
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use File::Temp qw/ tempdir /; |
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greg |
2.2 |
my $td = tempdir( CLEANUP => 1 ); |
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my $oct = "$td/ltview.oct"; |
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my $room = "$td/room.rad"; |
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my $box; # Overall box dimensions |
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my $rif = "$td/ltview.rif"; |
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my $lumi = "$td/lumi.rad"; # Fitting as given on cmd line, or generated by ies2rad |
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my $lumi2 = "$td/lumi2.rad"; # Fitting centred at origin |
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my $raddev = "x11"; # Default output device. Overwrite with -o |
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my $is_ies = 0; # Input file is IES photometry, not a Radiance luminaire |
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greg |
2.1 |
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while (@ARGV) { |
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greg |
2.2 |
$_ = $ARGV[0]; |
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if (m/-i/) { |
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$is_ies = 1; |
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} elsif (m/-o/) { # output device (rvu -devices) |
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$raddev = $ARGV[1]; |
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shift @ARGV; |
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} elsif (m/-b/) { |
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$box = $ARGV[1]; # Box dimensions |
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shift @ARGV; |
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} elsif (m/^-\w/) { |
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die("ltview: Bad option: '$_'\n"); |
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} else { |
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last; |
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} |
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shift @ARGV; |
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greg |
2.1 |
} |
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# We need exactly one Radiance luminaires or IES file |
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greg |
2.2 |
if ( !$#ARGV == 0 ) { |
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die("ltview: Need one Radiance luminaire or IES file.\n"); |
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} elsif ( $is_ies == 0 ) { |
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greg |
2.1 |
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greg |
2.2 |
# Input file is a Radiance luminaire |
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$lumi = $ARGV[0]; |
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greg |
2.1 |
} else { |
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greg |
2.2 |
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# Input file is IES photometry |
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system qq[ ies2rad -p $td -o lumi "$ARGV[0]" ]; |
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greg |
2.1 |
} |
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greg |
2.2 |
# Work out centre of luminaire |
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my $dimstr = `getbbox -h "$lumi"`; |
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chomp $dimstr; |
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# Values returned by getbbox are indented and delimited with multiple spaces. |
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$dimstr =~ s/^\s+//; # remove leading spaces |
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my @dims = split( /\s+/, $dimstr ); # convert to array |
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# Find largest axes-aligned luminaire dimension |
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# The box will be ten times as large, unless overwritten with -b option. |
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my @diffs = reverse sort { $a <=> $b } |
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( $dims[1] - $dims[0], $dims[3] - $dims[2], $dims[5] - $dims[4] ); |
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my $lsize = $diffs[0]; |
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# Centre fitting at origin |
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my $xtrans = -1.0 * ( $dims[0] + $dims[1] ) / 2; |
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my $ytrans = -1.0 * ( $dims[2] + $dims[3] ) / 2; |
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my $ztrans = -1.0 * ( $dims[4] + $dims[5] ) / 2; |
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system qq[ xform -t $xtrans $ytrans $ztrans "$lumi" > $lumi2 ]; |
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greg |
2.1 |
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greg |
2.2 |
# Make the enclosing box |
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greg |
2.1 |
my $b2; |
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greg |
2.2 |
if ( defined $box ) { |
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greg |
2.1 |
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greg |
2.2 |
# Room dimensions are giving explicitly. |
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$b2 = $box / 2; |
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greg |
2.1 |
} else { |
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greg |
2.2 |
# Box dimensions are ten times largest luminaire bbox dimensions. |
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$b2 = $lsize * 10.0 / 2.0; |
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greg |
2.1 |
} |
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greg |
2.2 |
open( FH, ">$room" ) |
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or die("ltview: Can't write to temporary file '$room'\n"); |
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greg |
2.1 |
print FH <<EndOfRoom; |
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greg |
2.2 |
void plastic wall_mat 0 0 5 .2 .2 .2 0 0 |
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# Don't generate -y face so we can look into the box |
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greg |
2.1 |
#wall_mat polygon box.1540 0 0 12 $b2 -$b2 -$b2 $b2 -$b2 $b2 -$b2 -$b2 $b2 -$b2 -$b2 -$b2 |
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wall_mat polygon box.4620 0 0 12 -$b2 -$b2 $b2 -$b2 $b2 $b2 -$b2 $b2 -$b2 -$b2 -$b2 -$b2 |
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wall_mat polygon box.2310 0 0 12 -$b2 $b2 -$b2 $b2 $b2 -$b2 $b2 -$b2 -$b2 -$b2 -$b2 -$b2 |
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wall_mat polygon box.3267 0 0 12 $b2 $b2 -$b2 -$b2 $b2 -$b2 -$b2 $b2 $b2 $b2 $b2 $b2 |
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wall_mat polygon box.5137 0 0 12 $b2 -$b2 $b2 $b2 -$b2 -$b2 $b2 $b2 -$b2 $b2 $b2 $b2 |
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wall_mat polygon box.6457 0 0 12 -$b2 $b2 $b2 -$b2 -$b2 $b2 $b2 -$b2 $b2 $b2 $b2 $b2 |
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EndOfRoom |
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close(FH); |
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greg |
2.2 |
my $scene = "$room $lumi2"; |
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greg |
2.1 |
# Make this work under Windoze |
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if ( $^O =~ /MSWin32/ ) { |
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greg |
2.2 |
$scene =~ s{\\}{/}g; |
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$oct =~ s{\\}{/}g; |
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$raddev = "qt"; |
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greg |
2.1 |
} |
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greg |
2.2 |
# Tweak scene bounding box so we get a nice view covering all of the box, without |
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greg |
2.1 |
# having a wasteful black border around it. Must work for arbitrary box dims. |
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greg |
2.2 |
my $zone = 1.1 * $b2 * ( 1 + 1 / tan( 22.5 * pi / 180 ) ); |
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greg |
2.1 |
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greg |
2.2 |
open( FH, ">$rif" ) |
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or die("ltview: Can't write to temporary file '$rif'\n"); |
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greg |
2.1 |
print FH <<EndOfRif; |
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scene= $scene |
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ZONE= Interior -$zone $zone -$zone $zone -$zone $zone |
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UP= Z |
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view= y |
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OCTREE= $oct |
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oconv= -f |
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greg |
2.2 |
render= -av 0 0 0 |
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INDIRECT= 0 |
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QUALITY= Med |
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DETAIL= Low |
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VARIABILITY= Med |
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greg |
2.1 |
EndOfRif |
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close(FH); |
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greg |
2.2 |
exec "rad -o $raddev $rif"; |
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greg |
2.1 |
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#EOF |
