{"type":"rich","description":"clear; close all; p0 = [100, 0, 0]'; p1 = [0, 100, 0]'; p2 = [0, 0, 100]'; p0x = p0(1); p0y = p0(2); p0z = p0(3); p1x = p1(1); p1y = p1(2); p1z = p1(3); p2x = p2(1); p2y = p2(2); p2z = p2(3); %\u5e72\u6e09\u9762F n = [0,0,1]'; P = [0,0,50]'; %\u4ea4\u70b9Q0: P0-P2 v0 = P - p0; v1 = p2 - p0; t = dot(n,v0) / dot(n,v1); Q0 = p\u2026","height":"190","width":"100%","author_url":"https://blog.hatena.ne.jp/seinzumtode/","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/s/seinzumtode/20230220/20230220131137.png","categories":[],"author_name":"seinzumtode","title":"\u5e72\u6e09\u8a08\u7b97","blog_url":"https://seinzumtode.hatenadiary.jp/","provider_name":"Hatena Blog","url":"https://seinzumtode.hatenadiary.jp/entry/2023/02/20/131152","blog_title":"how to code something","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fseinzumtode.hatenadiary.jp%2Fentry%2F2023%2F02%2F20%2F131152\" title=\"\u5e72\u6e09\u8a08\u7b97 - how to code something\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2023-02-20 13:11:52","version":"1.0"}