module RailsSprite::Library::RMagick

Constants

VALID_EXTENSIONS

Public Class Methods

create(filename, images, width, height) click to toggle source
# File lib/rails_sprite/library/rmagick.rb, line 19
def self.create(filename, images, width, height)
  target = Magick::Image.new(width, height)
  target.opacity = Magick::QuantumRange
  images.each do |image|
    target.composite!(image[:image], image[:x], image[:y], Magick::SrcOverCompositeOp)
  end
  target.write(filename)
end
load(filename) click to toggle source
# File lib/rails_sprite/library/rmagick.rb, line 9
def self.load(filename)
  image = Magick::Image.read(filename)[0]

  {
    :image    => image,
    :width    => image.columns,
    :height   => image.rows
  }
end