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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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$25=$3; $26=$4; $27=$5; |
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cx=cos(wx); cy=cos(wy); |
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sx=sin(wx); sy=sin(wy); |
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< |
wx=2*PI*($1+.5)/xres; wy=2*PI*($2+.5)/yres; |
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> |
wx=2*PI/xres*($1+.5); wy=2*PI/yres*($2+.5); |
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'_EOF_' |
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cat > $td/fsub.cal << '_EOF_' |
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PI:3.14159265358979323846; |
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+bcxcy*cx*cy+bcxsy*cx*sy+bsxcy*sx*cy+bsxsy*sx*sy); |
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cx=cos(wx); cy=cos(wy); |
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sx=sin(wx); sy=sin(wy); |
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< |
wx=2*PI*(x+.5)/xres; wy=2*PI*(y+.5)/yres; |
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> |
wx=2*PI/xres*(x+.5); wy=2*PI/yres*(y+.5); |
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'_EOF_' |
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+ |
skipthis: |
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foreach f ($*) |
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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 < $td/pf` |
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> |
set resolu=($resolu[4] $resolu[2]) |
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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 -f $td/coef.cal -e 'xres=32;yres=32' \ |
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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 $td/fsub.cal \ |
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< |
-e "xres=$resolu[1];yres=$resolu[2]" \ |
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< |
$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 |
