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- #!/bin/csh -f
- # SCCSid "@(#)normpat.csh 2.2 1/5/92 LBL"
- #
- # Normalize a pattern for tiling (-b option blends edges) by removing
- # lowest frequencies from image (-f option) and reducing to
- # standard size (-r option)
- #
- set ha=$0
- set ha=$ha:t
- set pf="pfilt -e 2"
- while ($#argv > 0)
- switch ($argv[1])
- case -r:
- shift argv
- set pf="$pf -x $argv[1] -y $argv[1] -p 1 -r .67"
- breaksw
- case -f:
- set ha="$ha -f"
- set dofsub
- breaksw
- case -b:
- set ha="$ha -b"
- set blend
- breaksw
- case -v:
- set verb
- breaksw
- case -*:
- echo bad option $argv[1]
- exit 1
- default:
- goto dofiles
- endsw
- shift argv
- end
- dofiles:
- onintr quit
- set td=/usr/tmp/np$$
- mkdir $td
- cat > $td/coef.fmt << '_EOF_'
- rm:${ $25 }; gm:${ $26 }; bm:${ $27 };
- rcx:${ $1 }; gcx:${ $9 }; bcx:${ $17 };
- rcy:${ $2 }; gcy:${ $10 }; bcy:${ $18 };
- rsx:${ $3 }; gsx:${ $11 }; bsx:${ $19 };
- rsy:${ $4 }; gsy:${ $12 }; bsy:${ $20 };
- rcxcy:${ $5 }; gcxcy:${ $13 }; bcxcy:${ $21 };
- rcxsy:${ $6 }; gcxsy:${ $14 }; bcxsy:${ $22 };
- rsxcy:${ $7 }; gsxcy:${ $15 }; bsxcy:${ $23 };
- rsxsy:${ $8 }; gsxsy:${ $16 }; bsxsy:${ $24 };
- '_EOF_'
- cat > $td/coef.cal << '_EOF_'
- $1=$3*2*cx; $2=$3*2*cy; $3=$3*2*sx; $4=$3*2*sy;
- $5=$3*4*cx*cy; $6=$3*4*cx*sy; $7=$3*4*sx*cy; $8=$3*4*sx*sy;
- $9=$4*2*cx; $10=$4*2*cy; $11=$4*2*sx; $12=$4*2*sy;
- $13=$4*4*cx*cy; $14=$4*4*cx*sy; $15=$4*4*sx*cy; $16=$4*4*sx*sy;
- $17=$5*2*cx; $18=$5*2*cy; $19=$5*2*sx; $20=$5*2*sy;
- $21=$5*4*cx*cy; $22=$5*4*cx*sy; $23=$5*4*sx*cy; $24=$5*4*sx*sy;
- $25=$3; $26=$4; $27=$5;
- cx=cos(wx); cy=cos(wy);
- sx=sin(wx); sy=sin(wy);
- wx=2*PI*($1+.5)/xres; wy=2*PI*($2+.5)/yres;
- '_EOF_'
- cat > $td/fsub.cal << '_EOF_'
- PI:3.14159265358979323846;
- ro=ri(1)*rm/(rm+rcx*cx+rcy*cy+rsx*sx+rsy*sy
- +rcxcy*cx*cy+rcxsy*cx*sy+rsxcy*sx*cy+rsxsy*sx*sy);
- go=gi(1)*gm/(gm+gcx*cx+gcy*cy+gsx*sx+gsy*sy
- +gcxcy*cx*cy+gcxsy*cx*sy+gsxcy*sx*cy+gsxsy*sx*sy);
- bo=bi(1)*bm/(bm+bcx*cx+bcy*cy+bsx*sx+bsy*sy
- +bcxcy*cx*cy+bcxsy*cx*sy+bsxcy*sx*cy+bsxsy*sx*sy);
- cx=cos(wx); cy=cos(wy);
- sx=sin(wx); sy=sin(wy);
- wx=2*PI*(x+.5)/xres; wy=2*PI*(y+.5)/yres;
- '_EOF_'
- foreach f ($*)
- if ( $?verb ) then
- echo $f\:
- echo adjusting exposure/size...
- endif
- $pf $f > $td/pf
- getinfo < $td/pf > $f
- ed - $f << _EOF_
- i
- $ha
- .
- w
- q
- _EOF_
- set resolu=`getinfo -d < $td/pf | sed 's/-Y \([0-9]*\) +X \([0-9]*\)/\2 \1/'`
- if ( ! $?dofsub ) then
- mv $td/pf $td/hf
- goto donefsub
- endif
- if ( $?verb ) then
- echo computing Fourier coefficients...
- endif
- pfilt -1 -x 32 -y 32 $td/pf | pvalue -h \
- | rcalc -f $td/coef.cal -e 'xres=32;yres=32' \
- | total -m | rcalc -o $td/coef.fmt \
- > $td/coef
- if ( $?verb ) then
- cat $td/coef
- echo removing low frequencies...
- endif
- pcomb -f $td/coef -f $td/fsub.cal \
- -e "xres=$resolu[1];yres=$resolu[2]" \
- $td/pf > $td/hf
- donefsub:
- if ( $?blend ) then
- if ( $?verb ) then
- echo blending edges...
- endif
- @ mar= $resolu[1] - 3
- @ les= $resolu[1] - 1
- pcompos -x 1 $td/hf 0 0 | pfilt -1 -x 3 > $td/left
- pcompos $td/hf -$les 0 | pfilt -1 -x 3 > $td/right
- pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
- -e 'f(p)=(3-x)/7*p(1)+(4+x)/7*p(2)' \
- $td/right $td/left > $td/left.patch
- pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
- -e 'f(p)=(1+x)/7*p(1)+(6-x)/7*p(2)' \
- $td/left $td/right > $td/right.patch
- pcompos $td/hf 0 0 $td/left.patch 0 0 $td/right.patch $mar 0 \
- > $td/hflr
- @ mar= $resolu[2] - 3
- @ les= $resolu[2] - 1
- pcompos -y 1 $td/hflr 0 0 | pfilt -1 -y 3 > $td/bottom
- pcompos $td/hflr 0 -$les | pfilt -1 -y 3 > $td/top
- pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
- -e 'f(p)=(3-y)/7*p(1)+(4+y)/7*p(2)' \
- $td/top $td/bottom > $td/bottom.patch
- pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
- -e 'f(p)=(1+y)/7*p(1)+(6-y)/7*p(2)' \
- $td/bottom $td/top > $td/top.patch
- pcompos $td/hflr 0 0 $td/bottom.patch 0 0 $td/top.patch 0 $mar \
- | getinfo - >> $f
- else
- getinfo - < $td/hf >> $f
- endif
- if ( $?verb ) then
- echo $f done.
- endif
- end
- quit:
- rm -rf $td
-