{"published":"2015-07-10 23:50:48","type":"rich","categories":["graphics","math-bezier"],"blog_title":"\u3089\u3093\u3060\u3080\u306a\u8a18\u61b6","author_url":"https://blog.hatena.ne.jp/derwind/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frandommemory.hatenablog.com%2Fentry%2F2015%2F07%2F10%2F235048\" title=\"2\u6b21B\u00e9zier\u30683\u6b21B\u00e9zier - \u3089\u3093\u3060\u3080\u306a\u8a18\u61b6\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","version":"1.0","blog_url":"https://randommemory.hatenablog.com/","provider_name":"Hatena Blog","url":"https://randommemory.hatenablog.com/entry/2015/07/10/235048","author_name":"derwind","height":"190","title":"2\u6b21B\u00e9zier\u30683\u6b21B\u00e9zier","width":"100%","image_url":null,"provider_url":"https://hatena.blog","description":"\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30dd\u30a4\u30f3\u30c8$Q_0,\\ Q_1,\\ Q_2$\u304b\u3089\u306a\u308b2\u6b21B\u00e9zier\u66f2\u7dda\u306f\u5b9f\u306f\u53b3\u5bc6\u306b\u3001\u3042\u308b3\u6b21B\u00e9zier\u66f2\u7dda\u3068\u3057\u3066\u5b9f\u73fe\u3067\u304d\u308b\u3002\u305d\u306e3\u6b21B\u00e9zier\u66f2\u7dda\u306f\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30dd\u30a4\u30f3\u30c8$P_0,\\ P_1,\\ P_2, P_3$\u304b\u3089\u306a\u308b\u3068\u3057\u3066\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u3092$t$\u3068\u3057\u3066\u3001\u7d20\u6734\u306b\u4ee5\u4e0b\u306e\u7b49\u5f0f\u3092\u8003\u3048\u308b\u3002 \\begin{equation} (1-t)^2 Q_0 + 2t(1-t) Q_1 + t^2 Q_2 = (1-t)^3 P_0 + 3t(1-t)^2 P_1 + 3t^2(1-t) P_2 + t^3 P_3 \\end{equation} \u3053\u308c\u3092$t$\u306b\u3064\u3044\u3066\u6574\u7406\u3057\u3066\u4ee5\u4e0b\u3092\u5f97\u308b\u3002 \\begin\u2026"}