Method: Paperclip::Geometry#transformation_to

Defined in:
lib/paperclip/geometry.rb

#transformation_to(dst, crop = false) ⇒ Object

Returns the scaling and cropping geometries (in string-based ImageMagick format) neccessary to transform this Geometry into the Geometry given. If crop is true, then it is assumed the destination Geometry will be the exact final resolution. In this case, the source Geometry is scaled so that an image containing the destination Geometry would be completely filled by the source image, and any overhanging image would be cropped. Useful for square thumbnail images. The cropping is weighted at the center of the Geometry.



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# File 'lib/paperclip/geometry.rb', line 94

def transformation_to(dst, crop = false)
  if crop
    ratio = Geometry.new(dst.width / width, dst.height / height)
    scale_geometry, scale = scaling(dst, ratio)
    crop_geometry         = cropping(dst, ratio, scale)
  else
    scale_geometry = dst.to_s
  end

  [scale_geometry, crop_geometry]
end