{"url":"https://mirichi.hatenadiary.org/entry/20130331/p1","height":"190","type":"rich","blog_title":"mirichi\u306e\u65e5\u8a18","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/m/mirichi/20130331/20130331100331.png","title":"\u64ec\u4f3c3D\u518d\u3073","version":"1.0","blog_url":"https://mirichi.hatenadiary.org/","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/mirichi/","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmirichi.hatenadiary.org%2Fentry%2F20130331%2Fp1\" title=\"\u64ec\u4f3c3D\u518d\u3073 - mirichi\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2013-03-31 00:00:00","author_name":"mirichi","provider_name":"Hatena Blog","categories":["DXRuby"],"description":"\u624b\u5143\u306eDXRuby1.5.0dev\u306bMatrix/Vector\u3068Sprite\u306e\u8ffd\u52a0\u6a5f\u80fd\u3092\u5b9f\u88c5\u3057\u3066\u307f\u305f\u306e\u3067\u3001\u6614\u3084\u3063\u3066\u305f\u64ec\u4f3c3D\u306e\u8a08\u7b97\u3092\u3059\u308bSprite\u3092\u4f5c\u3063\u3066\u307f\u305f\u3002 require 'dxruby' class Sprite3D < Sprite attr_accessor :v def self.set_transform(sw, sh, zn, zf) @@view = Matrix.new([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [-sw/2, -sh/2, zn, 1]]) @@proj = Matrix.new([[2.0 * zn / s\u2026"}