{"version":"1.0","title":"\u30d6\u30ec\u30bc\u30f3\u30cf\u30e0\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08Ruby\uff09","blog_title":"Camera Obscura","description":"ja.wikipedia.org\u300c\u30d6\u30ec\u30bc\u30f3\u30cf\u30e0\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u300d\u3068\u306f\u753b\u9762\u306b\u7dda\u5206\u3092\u63cf\u304f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002\u30b3\u30fc\u30c9\u306f\u3053\u3053\u306e Java \u7248\u3092\u79fb\u690d\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002Ruby \u30b3\u30fc\u30c9\u3067\u3059\u3002\u63cf\u753b\u306b Cairo \u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002 require \"cairo\" class Draw W = 400 Side = 10 def initialize @surface = Cairo::ImageSurface.new(W, W) @context = Cairo::Context.new(@surface) #\u80cc\u666f\u8272 @context.set_source_color(Cairo::Color::BLACK)\u2026","categories":["Ruby","\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0"],"published":"2020-01-23 00:51:45","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/o/obelisk2/20200123/20200123005112.png","author_name":"obelisk2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fobelisk.hatenablog.com%2Fentry%2F2020%2F01%2F23%2F005145\" title=\"\u30d6\u30ec\u30bc\u30f3\u30cf\u30e0\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08Ruby\uff09 - Camera Obscura\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://obelisk.hatenablog.com/entry/2020/01/23/005145","type":"rich","author_url":"https://blog.hatena.ne.jp/obelisk2/","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","blog_url":"https://obelisk.hatenablog.com/","height":"190","width":"100%"}