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greg |
2.1 |
#!/usr/bin/perl |
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# RCSid $Id$ |
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# |
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# Make a nice multi-view picture of an object |
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# Command line arguments contain materials and object files |
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# |
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# This is a re-write of Greg's objpict.csh and should be a drop-in |
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# replacement, with no funcionality added or removed |
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use strict; |
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use warnings; |
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use File::Temp qw/ tempdir /; |
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my $td = tempdir( CLEANUP => 1 ); |
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my $xres = 1024; |
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my $yres = 1024; |
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my $rpict_cmd = "rpict -av .2 .2 .2 -x $xres -y $yres"; |
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my $testroom = "$td/testroom.rad"; |
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my $octree = "$td/op.oct"; |
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# We need at least one Radiance file or a scene on STDIN (but not both) |
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if ($#ARGV < 0) { |
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open(FH, ">$td/stdin.rad") or |
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die("objview: Can't write to temporary file $td/stdin.rad\n"); |
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while (<>) { |
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print FH; |
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} |
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# Pretend stdin.rad was passed as argument. |
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@ARGV = ("$td/stdin.rad"); |
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} |
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# Create some lights and a box as back drop. |
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# The objects and view points will be inside the box. |
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open(FH, ">$testroom") or |
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die("Can\'t write to temporary file $testroom"); |
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print FH <<EndOfTestroom; |
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void plastic wall_mat 0 0 5 .681 .543 .686 0 .2 |
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void light bright 0 0 3 3000 3000 3000 |
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bright sphere lamp0 0 0 4 4 4 -4 .1 |
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bright sphere lamp1 0 0 4 4 0 4 .1 |
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bright sphere lamp2 0 0 4 0 4 4 .1 |
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wall_mat polygon box.1540 0 0 12 5 -5 -5 5 -5 5 -5 -5 5 -5 -5 -5 |
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wall_mat polygon box.4620 0 0 12 -5 -5 5 -5 5 5 -5 5 -5 -5 -5 -5 |
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wall_mat polygon box.2310 0 0 12 -5 5 -5 5 5 -5 5 -5 -5 -5 -5 -5 |
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wall_mat polygon box.3267 0 0 12 5 5 -5 -5 5 -5 -5 5 5 5 5 5 |
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wall_mat polygon box.5137 0 0 12 5 -5 5 5 -5 -5 5 5 -5 5 5 5 |
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wall_mat polygon box.6457 0 0 12 -5 5 5 -5 -5 5 5 -5 5 5 5 5 |
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EndOfTestroom |
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close(FH); |
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my $dimstr = `getbbox -h @ARGV`; |
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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+/, $dimstr); # convert to array |
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# Find largest axes-aligned dimension |
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my @diffs = ($dims[1]-$dims[0], $dims[3]-$dims[2], $dims[5]-$dims[4]); |
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@diffs = reverse sort { $a <=> $b } @diffs; |
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my $size = $diffs[0]; |
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# Define the four views |
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my $vw1 = "-vtl -vp 2 .5 .5 -vd -1 0 0 -vh 1 -vv 1"; |
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my $vw2 = "-vtl -vp .5 2 .5 -vd 0 -1 0 -vh 1 -vv 1"; |
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my $vw3 = "-vtl -vp .5 .5 2 -vd 0 0 -1 -vu -1 0 0 -vh 1 -vv 1"; |
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my $vw4 = "-vp 3 3 3 -vd -1 -1 -1 -vh 20 -vv 20"; |
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# Move objects so centre is 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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# Scale so that largest object dimension is unity |
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my $scale = 1 / $size; |
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my $cmd = "xform -t $xtrans $ytrans $ztrans -s $scale -t .5 .5 .5 @ARGV"; |
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$cmd .= " |oconv $testroom - > $octree"; |
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system "$cmd"; |
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# Render four different views of the objects |
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system "$rpict_cmd $vw1 $octree > $td/right.hdr"; |
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system "$rpict_cmd $vw2 $octree > $td/front.hdr"; |
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system "$rpict_cmd $vw3 $octree > $td/down.hdr"; |
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system "$rpict_cmd $vw4 $octree > $td/oblique.hdr"; |
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# Compose the four views into one image |
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$cmd = "pcompos $td/down.hdr 0 $xres $td/oblique.hdr $xres $yres"; |
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$cmd .= " $td/right.hdr 0 0 $td/front.hdr $xres 0"; |
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$cmd .= " |pfilt -1 -r .6 -x /2 -y /2"; |
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exec "$cmd"; |
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#EOF |
