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Thumbnailer In Ruby And RMagick

require 'RMagick'

maxwidth = 120
maxheight = 160
aspectratio = maxwidth.to_f / maxheight.to_f
imgfile = 'world'

pic = Magick::Image.read(imgfile + '.jpg').first
imgwidth = pic.columns
imgheight = pic.rows
imgratio = imgwidth.to_f / imgheight.to_f
imgratio > aspectratio ? scaleratio = maxwidth.to_f / imgwidth : scaleratio = maxheight.to_f / imgheight
thumb = pic.resize(scaleratio)

white_bg = Magick::Image.new(maxwidth, thumb.height)
pic = white_bg.composite(thumb, Magick::CenterGravity, Magick::OverCompositeOp)
pic.write(imgfile + '.thumb.jpg')
{{ tag }}, {{tag}},

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}
{{ parent.authors[0].realName || parent.author}}

{{ parent.authors[0].tagline || parent.tagline }}

{{ parent.views }} ViewsClicks
Tweet

{{parent.nComments}}