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#!/bin/csh -f |
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< |
# SCCSid "$SunId$ LBL" |
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> |
# RCSid: $Id$ |
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# |
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# Normalize a pattern for tiling (-b option blends edges) by removing |
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# lowest frequencies from image (-f option) and reducing to |
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end |
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dofiles: |
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onintr quit |
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< |
set td=/usr/tmp/np$$ |
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< |
mkdir $td |
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> |
set td=`mktemp -d /tmp/np.XXXXXX` |
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> |
goto skipthis |
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cat > $td/coef.fmt << '_EOF_' |
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rm:${ $25 }; gm:${ $26 }; bm:${ $27 }; |
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rcx:${ $1 }; gcx:${ $9 }; bcx:${ $17 }; |
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sx=sin(wx); sy=sin(wy); |
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wx=2*PI/xres*(x+.5); wy=2*PI/yres*(y+.5); |
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'_EOF_' |
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+ |
skipthis: |
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foreach f ($*) |
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if ( $?verb ) then |
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echo $f\: |
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w |
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q |
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_EOF_ |
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< |
set resolu=`getinfo -d < $td/pf | sed 's/-Y \([0-9]*\) +X \([0-9]*\)/\2 \1/'` |
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> |
set resolu=`getinfo -d < $td/pf | sed 's/-Y \([1-9][0-9]*\) +X \([1-9][0-9]*\)/\2 \1/'` |
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if ( ! $?dofsub ) then |
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mv $td/pf $td/hf |
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goto donefsub |
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endif |
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+ |
# if ( $?verb ) then |
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# echo computing Fourier coefficients... |
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# endif |
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+ |
# pfilt -1 -x 32 -y 32 $td/pf | pvalue -h \ |
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# | rcalc -e 'xres:32;yres:32' -f $td/coef.cal \ |
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# | total -m | rcalc -o $td/coef.fmt \ |
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+ |
# > $td/coef |
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if ( $?verb ) then |
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< |
echo computing Fourier coefficients... |
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< |
endif |
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< |
pfilt -1 -x 32 -y 32 $td/pf | pvalue -h \ |
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< |
| rcalc -e 'xres:32;yres:32' -f $td/coef.cal \ |
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< |
| total -m | rcalc -o $td/coef.fmt \ |
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< |
> $td/coef |
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< |
if ( $?verb ) then |
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< |
cat $td/coef |
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> |
# cat $td/coef |
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echo removing low frequencies... |
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endif |
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< |
pcomb -f $td/coef -f $td/fsub.cal $td/pf > $td/hf |
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> |
pgblur -r `ev "sqrt($resolu[1]*$resolu[2])/8"` $td/pf > $td/lf |
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> |
pcomb -e 's=1/li(2);ro=s*ri(1);go=s*gi(1);bo=s*bi(1)' \ |
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> |
$td/pf $td/lf > $td/hf |
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> |
# pcomb -f $td/coef -f $td/fsub.cal $td/pf > $td/hf |
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donefsub: |
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if ( $?blend ) then |
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if ( $?verb ) then |
