#! /usr/local/bin/ruby -w require 'RMagick' # Demonstrate the Image#rotate method dog = Magick::Image.read('images/Dog2.jpg').first dog = dog.resize(250.0/dog.rows) dog = dog.rotate(45) # Make the corners transparent dog = dog.matte_replace(0,0) #dog.display dog.write('rotate_f.jpg') exit