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#!/usr/bin/perl -w |
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# RCSid $Id$ |
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# |
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# Visualize ambient positions and gradients |
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# |
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use strict; |
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sub userror { |
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print STDERR "Usage: genambpos [-l lvl][-s scale][-p][-d] scene.amb > ambloc.rad\n"; |
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exit 1; |
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} |
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my $lvlsel = -1; |
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my $scale = 0.25; |
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my $doposgrad = 0; |
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my $dodirgrad = 0; |
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my $savedARGV = "genambpos @ARGV"; |
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# Get options |
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while ($#ARGV >= 0) { |
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if ("$ARGV[0]" =~ /^-p/) { |
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$doposgrad=1; |
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} elsif ("$ARGV[0]" =~ /^-d/) { |
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$dodirgrad=1; |
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} elsif ("$ARGV[0]" =~ /^-l/) { |
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$lvlsel = $ARGV[1]; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" =~ /^-s/) { |
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$scale = $ARGV[1]; |
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shift @ARGV; |
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} elsif ("$ARGV[0]" =~ /^-./) { |
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userror(); |
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} else { |
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last; |
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} |
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shift @ARGV; |
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} |
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userror() if ($#ARGV != 0); |
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my $cmd = "getinfo < $ARGV[0] " . |
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q[| sed -n 's/^.* -aa \([.0-9][.0-9]*\) .*$/\1/p']; |
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my $ambacc=`$cmd`; |
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die "Missing -aa setting in header\n" if (! $ambacc ); |
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$scale *= $ambacc**.25; |
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my $outfmt = ' |
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void glow posglow |
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0 |
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0 |
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4 ${agr} ${agg} ${agb} 0 |
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|
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posglow sphere position${recno} |
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0 |
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0 |
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4 ${px} ${py} ${pz} ${psiz} |
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|
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posglow cone pgarrow${recno} |
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0 |
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0 |
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8 |
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${ cx0 } ${ cy0 } ${ cz0 } |
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${ cx1 } ${ cy1 } ${ cz1 } |
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${ cr0 } 0 |
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'; |
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my $posgradfmt = ' |
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void brightfunc pgpat |
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2 posfunc ambpos.cal |
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0 |
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6 ${ px } ${ py } ${ pz } ${ pgx } ${ pgy } ${ pgz } |
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|
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pgpat glow pgval |
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0 |
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0 |
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4 ${avr} ${avg} ${avb} 0 |
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|
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void mixfunc pgeval |
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4 pgval void ellipstencil ambpos.cal |
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0 |
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9 ${ px } ${ py } ${ pz } ${ux/r0} ${uy/r0} ${uz/r0} ${vx/r1} ${vy/r1} ${vz/r1} |
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|
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pgeval polygon pgellipse${recno} |
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0 |
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0 |
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12 |
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${ px1 } ${ py1 } ${ pz1 } |
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${ px2 } ${ py2 } ${ pz2 } |
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${ px3 } ${ py3 } ${ pz3 } |
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${ px4 } ${ py4 } ${ pz4 } |
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'; |
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$outfmt .= $posgradfmt if ($doposgrad); |
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my $dirgradfmt=' |
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void glow tipglow |
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0 |
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0 |
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4 ${2*agr} ${2*agg} ${2*agb} 0 |
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|
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tipglow sphere atip |
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0 |
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0 |
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4 ${ cx1 } ${ cy1 } ${ cz1 } ${psiz/7} |
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|
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void brightfunc dgpat |
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2 dirfunc ambpos.cal |
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0 |
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9 ${ px } ${ py } ${ pz } ${ nx } ${ ny } ${ nz } ${ dgx } ${ dgy } ${ dgz } |
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|
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dgpat glow dgval |
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0 |
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0 |
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4 ${avr} ${avg} ${avb} 0 |
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|
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dgval ring dgdisk${recno}a |
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0 |
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0 |
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8 |
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${ px+dgx*.0001 } ${ py+dgy*.0001 } ${ pz+dgz*.0001 } |
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${ dgx } ${ dgy } ${ dgz } |
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0 ${ r0/2 } |
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|
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dgval ring dgdisk${recno}b |
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0 |
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0 |
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8 |
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${ px-dgx*.0001 } ${ py-dgy*.0001 } ${ pz-dgz*.0001 } |
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${ -dgx } ${ -dgy } ${ -dgz } |
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0 ${ r0/2 } |
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'; |
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$outfmt .= $dirgradfmt if ($dodirgrad); |
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# Load & convert ambient values |
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print "# Output produced by: $savedARGV\n"; |
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system "lookamb -h -d $ARGV[0] | rcalc -e 'LV:$lvlsel;SF:$scale' -f rambpos.cal -o '$outfmt'\n"; |
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exit; |
