{"blog_url":"https://erio-nk.hatenadiary.org/","type":"rich","author_url":"https://blog.hatena.ne.jp/erio_nk/","title":"\u5c04\u5f71\u5909\u63db\u884c\u5217","width":"100%","provider_url":"https://hatena.blog","image_url":null,"version":"1.0","height":"190","published":"2008-04-24 08:58:17","description":"\u6700\u8fd1\u306f\u65b0\u3057\u3044\u4f1a\u793e\u3067\u306e\u70ba\u306b\uff13\uff24\u3092\u52c9\u5f37\u3057\u76f4\u3057\u3066\u3044\u3066\u3001 \u81ea\u4f5c\u306e\u30d9\u30af\u30c8\u30eb\u30af\u30e9\u30b9\u3084\u884c\u5217\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u305f\u308a\u3057\u3066\u3044\u308b\u3002 \u8272\u3005\u3084\u3063\u3066\u3044\u3066\u4e00\u756a\u8b0e\u3060\u3063\u305f\u884c\u5217\u304c\u3001\u5c04\u5f71\u5909\u63db\u884c\u5217\u3002 DirectGraphics\u3067\u306f\u3001D3DXMatrixPerspectiveFovLH\u3068\u3057\u3066 \u7528\u610f\u3055\u308c\u3066\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u69d8\u306a\u884c\u5217\u3068\u306a\u3063\u3066\u3044\u308b\u3002Mproj = |w, 0, 0, 0| |0, h, 0, 0| |0, 0, zf/(zf-zn), 1| |0, 0, -zn*zf(zf-zn), 0|h = 1/tan(fovY/2) = cot(fovY/2) w = h / aspect zn = \u8996\u9318\u53f0\u306e\u8fd1\u5e73\u9762\u307e\u3067\u306e\u8ddd\u96e2 zf = \u8996\u9318\u53f0\u306e\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ferio-nk.hatenadiary.org%2Fentry%2F20080424%2F1208995097\" title=\"\u5c04\u5f71\u5909\u63db\u884c\u5217 - erio_nk://memo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["C++","Direct3D","\u6570\u5b66"],"url":"https://erio-nk.hatenadiary.org/entry/20080424/1208995097","blog_title":"erio_nk://memo","author_name":"erio_nk","provider_name":"Hatena Blog"}