gistfile1.io

    angle1 := Random value(-4, 6) round
    angle2 := angle1 - 5 + Random value(-2, 2) round
    angle3 := angle2 - 5 + Random value(-2, 2) round

    System system(
"""convert
#{Path with(rootFolder, gallery, "thumb", imageName)}
-thumbnail 192x192
-bordercolor white  -border 6
-bordercolor grey60 -border 1
-bordercolor none  -background  none
\( -clone 0  -rotate #{angle3} \)
\( -clone 0  -rotate #{angle2} \)
\( -clone 0  -rotate #{angle1} \)
-delete 0  -border 100x80  -gravity center
-crop 256x256+0+0  +repage  -flatten  -trim +repage
-background black \( +clone -shadow 60x4+4+4 \) +swap
-background none  -flatten
-extent 224x256
#{thumbName}
""" asMutable replaceSeq("\n", " ") interpolate
)