--- a/bin/ltview.pl Sun Dec 15 18:03:49 2013 +0000
+++ b/bin/ltview.pl Sun Dec 15 18:04:10 2013 +0000
@@ -1,31 +1,31 @@
#!/usr/bin/perl
#
-# Make a nice view of an object
-# Arguments are scene input files
+# Make a nice view of a luminaire
+# Argument is the Radiance description of a luminaire, incl. distribution
#
-# This is a re-write of Greg's original objview.csh.
-# The only extra functionality is that we accept a scene on STDIN
-# if no file name is given.
+# This script is based on Radiance's objview.pl plus
+# Rob Guglielmetti's ltview extension to his objview.rb
#
-# Axel, Nov 2013
+# Axel Jacobs, 25 Dec 2013
use strict;
use warnings;
use File::Temp qw/ tempdir /;
-#my $td = tempdir( CLEANUP => 1 );
-my $td = "tmp";
-my $octree = "$td/ov$$.oct";
+my $td = tempdir( CLEANUP => 1 );
+my $octree = "$td/lt$$.oct";
my $room = "$td/rm$$.rad";
-my $rif = "$td/ov$$.rif";
+my $rif = "$td/lt$$.rif";
+my $lumi = "$td/lt$$.rad";
my $ambf = "$td/af$$.amb";
my $raddev = "x11"; # default output device. Overwrite with -o
my $up = "Z";
-my $vw = "XYZ";
-my $rsize = 1; # room size in metres
+my $vw = "XYZ"; # default view. See 'man rad' for details
+my $bubble = 0; # Box or bubble? 0..box, 1..bubble
+my $TINY = 0.01;
my $opts = ""; # Options common to rad and glrad
-my $rendopts = "-ab 1 -ds .15"; # For render= line in rif file
+my $rendopts = "-ab 1 -ds .15 -av 0 0 0"; # For render= line in rif file
my $usegl = 0; # Run glrad instead of rad (Boolean).
my $radopt = 0; # An option specific to rad was passed (Boolean).
my $glradopt = 0; # An option specific to glrad was passed (Boolean).
@@ -34,9 +34,11 @@
$_ = $ARGV[0];
if (m/-g/) { # OpenGL output
if ( $^O =~ /MSWin32/ ) {
- die("OpenGL view is not available under Windows.\n");
+ # No meaningful error messages under Windows. Just ignore...
+ #die("OpenGL view is not available under Windows.\n");
+ } else {
+ $usegl = 1;
}
- $usegl = 1;
} elsif (m/-u/) { # up direction
$up = $ARGV[1];
shift @ARGV;
@@ -45,11 +47,17 @@
} elsif (m/-b/) { # back face visibility
$rendopts .= ' -bv';
} elsif (m/-v/) { # standard view "[Xx]?[Yy]?[Zz]?[vlcahs]?"
- # Let rad do any error handling...
+ # Prepend view with '+' for custom view away from the luminaire, not at it.
+ # This is not defined by rad's default views.
$vw = $ARGV[1];
shift @ARGV;
} elsif (m/-N/) { # No. of parallel processes
- $opts .= ' -N ' . $ARGV[1];
+ if ( $^O =~ /MSWin32/ ) {
+ # Silently ignore this under Windoze
+ #die("Multi-processor support is not available under Windows.\n");
+ } else {
+ $opts .= ' -N ' . $ARGV[1];
+ }
$radopt = 1;
shift @ARGV;
} elsif (m/-o/) { # output device (rvu -devices)
@@ -63,9 +71,8 @@
} elsif (m/-S/) { # full-screen stereo
$opts .= " $_";
$glradopt = 1;
- } elsif (m/-r/) { # room size
- $rsize = $ARGV[1];
- shift @ARGV;
+ } elsif (m/-r/) { # spherical room rather than box
+ $bubble = 1;
} elsif (m/^-\w/) {
die("objview: Bad option: $_\n");
} else {
@@ -74,11 +81,11 @@
shift @ARGV;
}
-# We need one IES file
+# We need exactly one input file: a Radiance luminaires description
+#TODO: this could be expanded to handle Radiance .dat files and IES photometry files...
if (! $#ARGV == 0) {
- die("ltview: Need one IES photometry file\n");
+ die("ltview: Need one Radiance luminaire.\n");
}
-my $scene = $ARGV[0];
# Make sure we don't confuse glrad and rad options.
if ($usegl) {
@@ -93,24 +100,65 @@
open(FH, ">$room") or
die("ltview: Can't write to temporary file $room\n");
-print FH <<EndOfRoom;
-void plastic surf 0 0 5 .2 .2 .2 0 0
-!genbox -i surf room $rsize $rsize $rsize |xform -t -$rsize/2 -$rsize/2 -$rsize/2
+print FH "void plastic wall_mat 0 0 5 .2 .2 .2 0 0\n";
+
+if ($bubble == 1) {
+ # Room is a bubble, not a box
+ my $radius = sprintf "%.6f", 1.1*5 * 3**(1/3);
+ print FH "wall_mat sphere orb 0 0 4 0 0 0 $radius\n";
+} else {
+ print FH <<EndOfRoom;
+# Don't rely on genbox here (named genrbox under Debian/Ubuntu)
+wall_mat polygon box.1540 0 0 12 5 -5 -5 5 -5 5 -5 -5 5 -5 -5 -5
+wall_mat polygon box.4620 0 0 12 -5 -5 5 -5 5 5 -5 5 -5 -5 -5 -5
+wall_mat polygon box.2310 0 0 12 -5 5 -5 5 5 -5 5 -5 -5 -5 -5 -5
+wall_mat polygon box.3267 0 0 12 5 5 -5 -5 5 -5 -5 5 5 5 5 5
+wall_mat polygon box.5137 0 0 12 5 -5 5 5 -5 -5 5 5 -5 5 5 5
+wall_mat polygon box.6457 0 0 12 -5 5 5 -5 -5 5 5 -5 5 5 5 5
EndOfRoom
+}
close(FH);
+# Work out how large the luminaire is and scale so that the longest
+# axis-align dimension is one unit
+my $dimstr = `getbbox -h $ARGV[0]`;
+chomp $dimstr;
+# Values returned by getbbox are indented and delimited with multiple spaces.
+$dimstr =~ s/^\s+//; # remove leading spaces
+my @dims = split(/\s+/, $dimstr); # convert to array
+
+# Find largest axes-aligned dimension
+my @diffs = ($dims[1]-$dims[0], $dims[3]-$dims[2], $dims[5]-$dims[4]);
+@diffs = reverse sort { $a <=> $b } @diffs;
+my $size = $diffs[0];
+
+# Move objects so centre is at origin
+my $xtrans = -1.0 * ($dims[0] + $dims[1]) / 2;
+my $ytrans = -1.0 * ($dims[2] + $dims[3]) / 2;
+my $ztrans = -1.0 * ($dims[4] + $dims[5]) / 2;
+# Scale so that largest object dimension is unity
+my $scale = 1 / $size;
+
+my $cmd = "xform -t $xtrans $ytrans $ztrans -s $scale $ARGV[0] > $lumi";
+system "$cmd";
+
+my $scene = "$room $lumi";
# Make this work under Windoze
if ( $^O =~ /MSWin32/ ) {
$scene =~ s{\\}{/}g;
$octree =~ s{\\}{/}g;
+ $ambf =~ s{\\}{/}g;
$raddev = "qt";
}
+my $custom_vw = $vw;
+$vw =~ s/^\+//;
open(FH, ">$rif") or
- die("objview: Can't write to temporary file $rif\n");
+ die("ltview: Can't write to temporary file $rif\n");
print FH <<EndOfRif;
scene= $scene
-EXPOSURE= .5
+EXPOSURE= 2
+ZONE= Interior -5 5 -5 5 -5 5
UP= $up
view= $vw
OCTREE= $octree
@@ -120,6 +168,52 @@
EndOfRif
close(FH);
+# Custom view: look away from the luminaire, not at it. This is indicated
+# by a leading '+' in front of the view (-v argument, default: XYZ)
+if ($custom_vw =~ m/^\+/) {
+ # Get rad to spit out the -v* options for the default view requested
+ my $view = `rad -V -n -s $rif`;
+ $view =~ s/\n//;
+ $view =~ s/^VIEW= //;
+
+ my $x = 0;
+ my $y = 0;
+ my $z = 0;
+ if ($vw =~ m/X/) {
+ $x = $dims[0] - $TINY;
+ } elsif ($vw =~ m/x/) {
+ $x = $dims[1] + $TINY;
+ }
+ if ($vw =~ m/Y/) {
+ $y = $dims[2] - $TINY;
+ } elsif ($vw =~ m/y/) {
+ $y = $dims[3] + $TINY;
+ }
+ if ($vw =~ m/Z/) {
+ $z = $dims[4] - $TINY;
+ } elsif ($vw =~ m/z/) {
+ $z = $dims[5] + $TINY;
+ }
+
+ # Keep rad-generated standard view, but modify -vp
+ $vw = "nice $view -vp $x $y $z";
+
+ open(FH, ">$rif") or
+ die("ltview: Can't write to temporary file $rif\n");
+ print FH <<EndOfRif2;
+scene= $scene
+EXPOSURE= 2
+ZONE= Interior -5 5 -5 5 -5 5
+UP= $up
+view= $vw
+OCTREE= $octree
+oconv= -f
+AMBF= $ambf
+render= $rendopts
+EndOfRif2
+ close(FH);
+}
+
if ($usegl) {
system "glrad $opts $rif";
} else {