# File lib/dragonfly/processing/r_magick_processor.rb, line 30
      def crop(temp_object, opts={})
        x       = opts[:x].to_i
        y       = opts[:y].to_i
        gravity = GRAVITIES[opts[:gravity]] || Magick::ForgetGravity
        width   = opts[:width].to_i
        height  = opts[:height].to_i

        rmagick_image(temp_object) do |image|
          # RMagick throws an error if the cropping area is bigger than the image,
          # when the gravity is something other than nw
          width  = image.columns - x if x + width  > image.columns
          height = image.rows    - y if y + height > image.rows
          image.crop(gravity, x, y, width, height)
        end
      end