| 1 |
|
#!/bin/csh -f |
| 2 |
|
# SCCSid "$SunId$ LBL" |
| 3 |
|
# |
| 4 |
< |
# Normalize a picture to make it suitable as a tiling pattern. |
| 5 |
< |
# This script reduces the image and removes the lowest frequencies. |
| 4 |
> |
# Normalize a pattern for tiling (-b option blends edges) by removing |
| 5 |
> |
# lowest frequencies from image (-f option) and reducing to |
| 6 |
> |
# standard size (-r option) |
| 7 |
|
# |
| 8 |
+ |
set ha=$0 |
| 9 |
+ |
set ha=$ha:t |
| 10 |
+ |
set pf="pfilt -e 2" |
| 11 |
+ |
while ($#argv > 0) |
| 12 |
+ |
switch ($argv[1]) |
| 13 |
+ |
case -r: |
| 14 |
+ |
shift argv |
| 15 |
+ |
set pf="$pf -x $argv[1] -y $argv[1] -p 1 -r .67" |
| 16 |
+ |
breaksw |
| 17 |
+ |
case -f: |
| 18 |
+ |
set ha="$ha -f" |
| 19 |
+ |
set dofsub |
| 20 |
+ |
breaksw |
| 21 |
+ |
case -b: |
| 22 |
+ |
set ha="$ha -b" |
| 23 |
+ |
set blend |
| 24 |
+ |
breaksw |
| 25 |
+ |
case -v: |
| 26 |
+ |
set verb |
| 27 |
+ |
breaksw |
| 28 |
+ |
case -*: |
| 29 |
+ |
echo bad option $argv[1] |
| 30 |
+ |
exit 1 |
| 31 |
+ |
default: |
| 32 |
+ |
goto dofiles |
| 33 |
+ |
endsw |
| 34 |
+ |
shift argv |
| 35 |
+ |
end |
| 36 |
+ |
dofiles: |
| 37 |
+ |
onintr quit |
| 38 |
+ |
set td=/usr/tmp/np$$ |
| 39 |
+ |
mkdir $td |
| 40 |
+ |
cat > $td/coef.fmt << '_EOF_' |
| 41 |
+ |
rm=${ $25 }; gm=${ $26 }; bm=${ $27 }; |
| 42 |
+ |
rcx=${ $1 }; gcx=${ $9 }; bcx=${ $17 }; |
| 43 |
+ |
rcy=${ $2 }; gcy=${ $10 }; bcy=${ $18 }; |
| 44 |
+ |
rsx=${ $3 }; gsx=${ $11 }; bsx=${ $19 }; |
| 45 |
+ |
rsy=${ $4 }; gsy=${ $12 }; bsy=${ $20 }; |
| 46 |
+ |
rcxcy=${ $5 }; gcxcy=${ $13 }; bcxcy=${ $21 }; |
| 47 |
+ |
rcxsy=${ $6 }; gcxsy=${ $14 }; bcxsy=${ $22 }; |
| 48 |
+ |
rsxcy=${ $7 }; gsxcy=${ $15 }; bsxcy=${ $23 }; |
| 49 |
+ |
rsxsy=${ $8 }; gsxsy=${ $16 }; bsxsy=${ $24 }; |
| 50 |
+ |
'_EOF_' |
| 51 |
+ |
cat > $td/coef.cal << '_EOF_' |
| 52 |
+ |
$1=$3*2*cx; $2=$3*2*cy; $3=$3*2*sx; $4=$3*2*sy; |
| 53 |
+ |
$5=$3*4*cx*cy; $6=$3*4*cx*sy; $7=$3*4*sx*cy; $8=$3*4*sx*sy; |
| 54 |
+ |
$9=$4*2*cx; $10=$4*2*cy; $11=$4*2*sx; $12=$4*2*sy; |
| 55 |
+ |
$13=$4*4*cx*cy; $14=$4*4*cx*sy; $15=$4*4*sx*cy; $16=$4*4*sx*sy; |
| 56 |
+ |
$17=$5*2*cx; $18=$5*2*cy; $19=$5*2*sx; $20=$5*2*sy; |
| 57 |
+ |
$21=$5*4*cx*cy; $22=$5*4*cx*sy; $23=$5*4*sx*cy; $24=$5*4*sx*sy; |
| 58 |
+ |
$25=$3; $26=$4; $27=$5; |
| 59 |
+ |
cx=cos(wx); cy=cos(wy); |
| 60 |
+ |
sx=sin(wx); sy=sin(wy); |
| 61 |
+ |
wx=2*PI*($1+.5)/xres; wy=2*PI*($2+.5)/yres; |
| 62 |
+ |
'_EOF_' |
| 63 |
+ |
cat > $td/fsub.cal << '_EOF_' |
| 64 |
+ |
ro=ri(1)*rm/(rm+rcx*cx+rcy*cy+rsx*sx+rsy*sy |
| 65 |
+ |
+rcxcy*cx*cy+rcxsy*cx*sy+rsxcy*sx*cy+rsxsy*sx*sy); |
| 66 |
+ |
go=gi(1)*gm/(gm+gcx*cx+gcy*cy+gsx*sx+gsy*sy |
| 67 |
+ |
+gcxcy*cx*cy+gcxsy*cx*sy+gsxcy*sx*cy+gsxsy*sx*sy); |
| 68 |
+ |
bo=bi(1)*bm/(bm+bcx*cx+bcy*cy+bsx*sx+bsy*sy |
| 69 |
+ |
+bcxcy*cx*cy+bcxsy*cx*sy+bsxcy*sx*cy+bsxsy*sx*sy); |
| 70 |
+ |
cx=cos(wx); cy=cos(wy); |
| 71 |
+ |
sx=sin(wx); sy=sin(wy); |
| 72 |
+ |
wx=2*PI*(x+.5)/xres; wy=2*PI*(y+.5)/yres; |
| 73 |
+ |
PI=3.14159265358979323846; |
| 74 |
+ |
'_EOF_' |
| 75 |
|
foreach f ($*) |
| 76 |
< |
pfilt -e 2 -x 128 -y 128 -p 1 $f > np$$ |
| 77 |
< |
set resolu=`getinfo -d < np$$ | sed 's/-Y \([0-9]*\) +X \([0-9]*\)/\2 \1/'` |
| 78 |
< |
set coef=`pfilt -1 -x 32 -y 32 np$$ | pvalue -h -b | rcalc -e '$1=2*$3*cos(wx);$2=2*$3*cos(wy);$3=2*$3*sin(wx);$4=2*$3*sin(wy);$5=4*$3*cos(wx)*cos(wy);$6=4*$3*cos(wx)*sin(wy);$7=4*$3*sin(wx)*cos(wy);$8=4*$3*sin(wx)*sin(wy);' -e 'wx=2*PI/32*$1;wy=2*PI/32*$2' | total -m` |
| 79 |
< |
pcomb -e 'ro=ri(1)*f;go=gi(1)*f;bo=bi(1)*f;f=1-fc-fs-f0-f1' \ |
| 80 |
< |
-e "fc=$coef[1]*cos(wx)+$coef[2]*cos(wy)" \ |
| 81 |
< |
-e "fs=$coef[3]*sin(wx)+$coef[4]*sin(wy)" \ |
| 82 |
< |
-e "f0=$coef[5]*cos(wx)*cos(wy)+$coef[6]*cos(wx)*sin(wy)" \ |
| 83 |
< |
-e "f1=$coef[7]*sin(wx)*cos(wy)+$coef[8]*sin(wx)*sin(wy)" \ |
| 84 |
< |
-e "wx=2*3.1416/$resolu[1]*x;wy=2*3.1416/$resolu[2]*y" \ |
| 85 |
< |
np$$ > $f |
| 86 |
< |
rm np$$ |
| 76 |
> |
if ( $?verb ) then |
| 77 |
> |
echo $f\: |
| 78 |
> |
echo adjusting exposure/size... |
| 79 |
> |
endif |
| 80 |
> |
$pf $f > $td/pf |
| 81 |
> |
getinfo < $td/pf > $f |
| 82 |
> |
ed - $f << _EOF_ |
| 83 |
> |
i |
| 84 |
> |
$ha |
| 85 |
> |
. |
| 86 |
> |
w |
| 87 |
> |
q |
| 88 |
> |
_EOF_ |
| 89 |
> |
set resolu=`getinfo -d < $td/pf | sed 's/-Y \([0-9]*\) +X \([0-9]*\)/\2 \1/'` |
| 90 |
> |
if ( ! $?dofsub ) then |
| 91 |
> |
mv $td/pf $td/hf |
| 92 |
> |
goto donefsub |
| 93 |
> |
endif |
| 94 |
> |
if ( $?verb ) then |
| 95 |
> |
echo computing Fourier coefficients... |
| 96 |
> |
endif |
| 97 |
> |
pfilt -1 -x 32 -y 32 $td/pf | pvalue -h \ |
| 98 |
> |
| rcalc -f $td/coef.cal -e 'xres=32;yres=32' \ |
| 99 |
> |
| total -m | rcalc -o $td/coef.fmt \ |
| 100 |
> |
> $td/coef |
| 101 |
> |
if ( $?verb ) then |
| 102 |
> |
cat $td/coef |
| 103 |
> |
echo removing low frequencies... |
| 104 |
> |
endif |
| 105 |
> |
pcomb -f $td/fsub.cal -f $td/coef \ |
| 106 |
> |
-e "xres=$resolu[1];yres=$resolu[2]" \ |
| 107 |
> |
$td/pf > $td/hf |
| 108 |
> |
donefsub: |
| 109 |
> |
if ( $?blend ) then |
| 110 |
> |
if ( $?verb ) then |
| 111 |
> |
echo blending edges... |
| 112 |
> |
endif |
| 113 |
> |
@ mar= $resolu[1] - 3 |
| 114 |
> |
@ les= $resolu[1] - 1 |
| 115 |
> |
pcompos -x 1 $td/hf 0 0 | pfilt -1 -x 3 > $td/left |
| 116 |
> |
pcompos $td/hf -$les 0 | pfilt -1 -x 3 > $td/right |
| 117 |
> |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 118 |
> |
-e 'f(p)=(3-x)/7*p(1)+(4+x)/7*p(2)' \ |
| 119 |
> |
$td/right $td/left > $td/left.patch |
| 120 |
> |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 121 |
> |
-e 'f(p)=(1+x)/7*p(1)+(6-x)/7*p(2)' \ |
| 122 |
> |
$td/left $td/right > $td/right.patch |
| 123 |
> |
pcompos $td/hf 0 0 $td/left.patch 0 0 $td/right.patch $mar 0 \ |
| 124 |
> |
> $td/hflr |
| 125 |
> |
@ mar= $resolu[2] - 3 |
| 126 |
> |
@ les= $resolu[2] - 1 |
| 127 |
> |
pcompos -y 1 $td/hflr 0 0 | pfilt -1 -y 3 > $td/bottom |
| 128 |
> |
pcompos $td/hflr 0 -$les | pfilt -1 -y 3 > $td/top |
| 129 |
> |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 130 |
> |
-e 'f(p)=(3-y)/7*p(1)+(4+y)/7*p(2)' \ |
| 131 |
> |
$td/top $td/bottom > $td/bottom.patch |
| 132 |
> |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 133 |
> |
-e 'f(p)=(1+y)/7*p(1)+(6-y)/7*p(2)' \ |
| 134 |
> |
$td/bottom $td/top > $td/top.patch |
| 135 |
> |
pcompos $td/hflr 0 0 $td/bottom.patch 0 0 $td/top.patch 0 $mar \ |
| 136 |
> |
| getinfo - >> $f |
| 137 |
> |
else |
| 138 |
> |
getinfo - < $td/hf >> $f |
| 139 |
> |
endif |
| 140 |
> |
if ( $?verb ) then |
| 141 |
> |
echo $f done. |
| 142 |
> |
endif |
| 143 |
|
end |
| 144 |
+ |
quit: |
| 145 |
+ |
rm -rf $td |
