ComputerGraphicsGemsJP(http://www.amazon.co.jp/Computer-Graphics-Gems-2012-%E3%82%B3%E3%83%B3%E3%83%94%E3%83%A5%E3%83%BC%E3%82%BF%E3%82%B0%E3%83%A9%E3%83%95%E3%82%A3%E3%83%83%E3%82%AF%E3%82%B9%E6%8A%80%E8%A1%93%E3%81%AE%E6%9C%80%E5%89%8D%E7%B7%9A/dp/4862461859)の第７章を実装してみた