Created
March 9, 2017 15:48
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imagemagick scripts for generating gifs that resemble drawing circles or ovals
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| function adjust1() { | |
| ran=$(od -An -N4 -i < /dev/urandom) | |
| echo `adjust $1 1` | |
| } | |
| function adjust2() { | |
| ran=$(od -An -N4 -i < /dev/urandom) | |
| echo `adjust $1 2` | |
| } | |
| function adjust() { | |
| ran=$(od -An -N4 -i < /dev/urandom) | |
| echo $(($1 + $(($ran%$(($2+1)))))) | |
| } | |
| function circles() { | |
| for i in 1 2 3 4 5 | |
| do | |
| arc1=$(adjust1 26),$(adjust1 26) | |
| arc2=$(adjust1 26),$(adjust1 26) | |
| arc3=$(adjust1 26),$(adjust1 26) | |
| arc4=$(adjust1 26),$(adjust1 26) | |
| point0=$(adjust 13 4),$(adjust2 6) | |
| point1=$(adjust 26 2),$(adjust2 6) | |
| point2=$(adjust2 50),$(adjust2 26) | |
| point3=$(adjust2 26),$(adjust2 50) | |
| point4=$(adjust2 2),$(adjust2 26) | |
| point5=$(adjust 28 10),$(adjust2 2) | |
| convert -size 54x54 xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| path_circlex0.gif | |
| convert -size 54x54 xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| path_circlex1.gif | |
| convert -size 54x54 xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| path_circlex2.gif | |
| convert -size 54x54 xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| -draw "path 'M ${point3} A ${arc3} 0 0,1 ${point4} '" \ | |
| path_circlex3.gif | |
| convert -size 54x54 xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| -draw "path 'M ${point3} A ${arc3} 0 0,1 ${point4} '" \ | |
| -draw "path 'M ${point4} A ${arc4} 0 0,1 ${point5} '" \ | |
| path_circlex4.gif | |
| convert path_circlex0.gif path_circlex1.gif path_circlex2.gif path_circlex3.gif path_circlex4.gif "path_circle${i}.gif" | |
| rm path_circlex* | |
| done | |
| } | |
| function ovalsX() { | |
| for i in 1 2 3 4 5 | |
| do | |
| size=108x54 | |
| arc1=$(adjust1 54),$(adjust1 24) | |
| arc2=$(adjust1 54),$(adjust1 28) | |
| arc3=$(adjust1 54),$(adjust1 24) | |
| arc4=$(adjust1 54),$(adjust1 28) | |
| point0=$(adjust 36 4),$(adjust1 6) | |
| point1=$(adjust2 54),$(adjust2 6) | |
| point2=$(adjust2 104),$(adjust2 26) | |
| point3=$(adjust2 54),$(adjust2 51) | |
| point4=$(adjust2 4),$(adjust2 26) | |
| point5=$(adjust 57 10),$(adjust2 4) | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| path_ovalsx0.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| path_ovalsx1.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| path_ovalsx2.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| -draw "path 'M ${point3} A ${arc3} 0 0,1 ${point4} '" \ | |
| path_ovalsx3.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| -draw "path 'M ${point3} A ${arc3} 0 0,1 ${point4} '" \ | |
| -draw "path 'M ${point4} A ${arc4} 0 0,1 ${point5} '" \ | |
| path_ovalsx4.gif | |
| convert path_ovalsx0.gif path_ovalsx1.gif path_ovalsx2.gif path_ovalsx3.gif path_ovalsx4.gif "path_oval${i}.gif" | |
| rm path_ovalsx* | |
| done | |
| } | |
| function testOval() { | |
| convert -size 300x100 xc:none -fill yellow -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M 150,4 A $1 $2 0,1 280,50 '" \ | |
| -draw "path 'M 280,50 A $1 $2 0,1 150,98 '" \ | |
| test_oval_arc.gif | |
| } | |
| function ovals() { #108x54 | |
| for i in 1 2 3 4 5 | |
| do | |
| size=80x42 | |
| arc1=$(adjust1 44),$(adjust1 17) | |
| arc2=$(adjust1 44),$(adjust1 17) | |
| arc3=$(adjust1 44),$(adjust1 17) | |
| arc4=$(adjust1 44),$(adjust1 17) | |
| point0=$(adjust 32 4),$(adjust1 6) | |
| point1=$(adjust2 40),$(adjust2 6) | |
| point2=$(adjust2 76),$(adjust2 22) | |
| point3=$(adjust2 40),$(adjust2 38) | |
| point4=$(adjust2 4),$(adjust2 20) | |
| point5=$(adjust 42 10),$(adjust2 4) | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| path_ovalsx0.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| path_ovalsx1.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| path_ovalsx2.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| -draw "path 'M ${point3} A ${arc3} 0 0,1 ${point4} '" \ | |
| path_ovalsx3.gif | |
| convert -size ${size} xc:none -fill none -stroke black +antialias -gravity North -strokewidth 2\ | |
| -draw "path 'M ${point0} L ${point1} '" \ | |
| -draw "path 'M ${point1} A ${arc1} 0 0,1 ${point2} '" \ | |
| -draw "path 'M ${point2} A ${arc2} 0 0,1 ${point3} '" \ | |
| -draw "path 'M ${point3} A ${arc3} 0 0,1 ${point4} '" \ | |
| -draw "path 'M ${point4} A ${arc4} 0 0,1 ${point5} '" \ | |
| path_ovalsx4.gif | |
| convert path_ovalsx0.gif path_ovalsx1.gif path_ovalsx2.gif path_ovalsx3.gif path_ovalsx4.gif "path_oval${i}.gif" | |
| rm path_ovalsx* | |
| done | |
| } |
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