{"id":208,"date":"2021-10-27T15:49:28","date_gmt":"2021-10-27T06:49:28","guid":{"rendered":"https:\/\/elosove.com\/?p=208"},"modified":"2023-10-03T12:45:43","modified_gmt":"2023-10-03T03:45:43","slug":"3d%e3%83%a2%e3%83%87%e3%83%ab%e3%81%ae%e4%bd%93%e7%a9%8d%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/elosove.com\/?p=208","title":{"rendered":"3D\u30e2\u30c7\u30eb\u306e\u4f53\u7a4d\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"\n<p>3D\u30c7\u30fc\u30bf\u304b\u3089\u4f53\u7a4d\u3092\u51fa\u3059\u65b9\u6cd5\u3068\u3057\u3066\u3001\u539f\u70b9\u3068\u9762\u3067\u4f5c\u3089\u308c\u308b\u4e09\u89d2\u9310\u3092\u8db3\u3057\u5408\u308f\u305b\u308b\u3068\u3044\u3046\u306e\u304c\u6709\u540d\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3068\u3057\u3066\u30c9\u30fc\u30ca\u30c3\u30c4(\u5186\u74b0\u4f53)\u306e\u4f53\u7a4d\u3092obj\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067python\u3092\u4f7f\u3063\u3066\u51fa\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30b9\u30af\u30ea\u30d7\u30c8\u3060\u3051\u6b32\u3057\u3044\u65b9\u306f\u3053\u3061\u3089\uff08<a href=\"https:\/\/github.com\/samsumario\/el_oso_ve_efectos\/tree\/main\/obj_volume\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/github.com\/samsumario\/el_oso_ve_efectos\/tree\/main\/obj_volume<\/a>\uff09<\/p>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/elosove.com\/?p=208\/#3D%E3%83%A2%E3%83%87%E3%83%AB%E3%81%AE%E7%94%A8%E6%84%8F\" title=\"3D\u30e2\u30c7\u30eb\u306e\u7528\u610f\">3D\u30e2\u30c7\u30eb\u306e\u7528\u610f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/elosove.com\/?p=208\/#obj%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\" title=\"obj\u30d5\u30a1\u30a4\u30eb\u306b\u3064\u3044\u3066\">obj\u30d5\u30a1\u30a4\u30eb\u306b\u3064\u3044\u3066<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/elosove.com\/?p=208\/#%E4%B8%89%E8%A7%92%E9%8C%90%E3%81%AE%E4%BD%93%E7%A9%8D%E8%A8%88%E7%AE%97\" title=\"\u4e09\u89d2\u9310\u306e\u4f53\u7a4d\u8a08\u7b97\">\u4e09\u89d2\u9310\u306e\u4f53\u7a4d\u8a08\u7b97<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/elosove.com\/?p=208\/#%E3%82%A2%E3%83%AB%E3%82%B4%E3%83%AA%E3%82%BA%E3%83%A0%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\" title=\"\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3064\u3044\u3066\">\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3064\u3044\u3066<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/elosove.com\/?p=208\/#python%E3%82%B3%E3%83%BC%E3%83%89%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB\" title=\"python\u30b3\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb\">python\u30b3\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/elosove.com\/?p=208\/#%E8%A8%88%E7%AE%97%E7%B5%90%E6%9E%9C\" title=\"\u8a08\u7b97\u7d50\u679c\">\u8a08\u7b97\u7d50\u679c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/elosove.com\/?p=208\/#%E5%8F%82%E8%80%83%E3%82%B5%E3%82%A4%E3%83%88\" title=\"\u53c2\u8003\u30b5\u30a4\u30c8\">\u53c2\u8003\u30b5\u30a4\u30c8<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"has-vivid-purple-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"3D%E3%83%A2%E3%83%87%E3%83%AB%E3%81%AE%E7%94%A8%E6%84%8F\"><\/span>3D\u30e2\u30c7\u30eb\u306e\u7528\u610f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Free3D\u3067\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u30e2\u30c7\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\uff1a<a href=\"https:\/\/free3d.com\/3d-model\/doughnut-462509.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/free3d.com\/3d-model\/doughnut-462509.html<\/a><\/p>\n\n\n\n<p>\u308f\u3056\u308f\u3056\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u306e\u306f\u6700\u521d\u304b\u3089blender\u3067\u5186\u74b0\u4f53\u3092\u4f5c\u308d\u3046\u3068\u3057\u3066\u632b\u6298\u3057\u305f\u70ba\u3067\u3059\u3002\u3002\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"280\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/doughnut.png\" alt=\"\" class=\"wp-image-211\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/doughnut.png 500w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/doughnut-300x168.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>\u30d5\u30a1\u30a4\u30eb\u3092blender\u3067\u958b\u3044\u3066\u3001\u5186\u74b0\u4f53\u306eTorus\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u4ee5\u5916\u306f\u5168\u90e8\u88c5\u98fe\u306a\u306e\u3067\u524a\u9664\u3057\u3066\u5f37\u5f15\u306b\u3072\u3093\u525d\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/Torus.png\" alt=\"\" class=\"wp-image-212\" width=\"237\" height=\"212\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/Torus.png 428w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/Torus-300x268.png 300w\" sizes=\"auto, (max-width: 237px) 100vw, 237px\" \/><\/figure>\n\n\n\n<p>\u4e09\u89d2\u9310\u3092\u4f5c\u3063\u3066\u4f53\u7a4d\u3092\u51fa\u305d\u3046\u3068\u3057\u3066\u3044\u308b\u306e\u306b\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30e2\u30c7\u30eb\u306f\u898b\u3066\u306e\u901a\u308a\u56db\u89d2\u30e1\u30c3\u30b7\u30e5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u3001\u4e09\u89d2\u30e1\u30c3\u30b7\u30e5\u3088\u308a\u3082\u56db\u89d2\u30e1\u30c3\u30b7\u30e5\u306e\u65b9\u304c\u30ab\u30fc\u30d6\u3092\u7dba\u9e97\u306b\u51fa\u305b\u308b\u70ba\u3067\u3001\u6709\u6a5f\u7684\u306a\u30e2\u30c7\u30eb\u3092\u4f5c\u308b\u5834\u5408\u306b\u9078\u629e\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306fblender\u306e\u30a8\u30c7\u30a3\u30c3\u30c8\u30e2\u30fc\u30c9\u3067\u4e09\u89d2\u30e1\u30c3\u30b7\u30e5\u306b\u5909\u63db\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"233\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/4to3mesh.png\" alt=\"\" class=\"wp-image-213\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/4to3mesh.png 500w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/4to3mesh-300x140.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>\u6700\u5f8c\u306bpython\u3067\u6271\u3044\u3084\u3059\u304f(?)\u3059\u308b\u70ba\u306bobj\u30d5\u30a1\u30a4\u30eb\u3067\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u51fa\u529b\u3059\u308b\u3068\u304d\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u306eGeometry\u3067\u300cApply Modifiers\u300d\u3092off\u306b\u3001\u300cTriangle Faces\u300d\u3092on\u306b\u3057\u3066\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"299\" height=\"352\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/export_menue.png\" alt=\"\" class=\"wp-image-215\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/export_menue.png 299w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/export_menue-255x300.png 255w\" sizes=\"auto, (max-width: 299px) 100vw, 299px\" \/><\/figure>\n\n\n\n<p>\u3053\u308c\u3067\u3088\u3046\u3084\u304f\u30b7\u30f3\u30d7\u30eb\u306a\u5186\u74b0\u4f53\u306e\u30dd\u30ea\u30b4\u30f3\u30e2\u30c7\u30eb\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<h2 class=\"has-vivid-purple-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"obj%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\"><\/span>obj\u30d5\u30a1\u30a4\u30eb\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4eca\u56de\u306f\u4e09\u89d2\u30e1\u30c3\u30b7\u30e5\u3067\u4fdd\u5b58\u3057\u3066\u3044\u308b\u306e\u3067\u3001obj\u30d5\u30a1\u30a4\u30eb\u306e\u30dd\u30ea\u30b4\u30f3\u30c7\u30fc\u30bf\u306f&#8221;f&#8221;\u30ad\u30fc\u30ef\u30fc\u30c9\u30673\u3064\u306e\u9802\u70b9\u756a\u53f7\u304c\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>obj\u30d5\u30a1\u30a4\u30eb\u306e\u8a73\u7d30\u306f\u300c<a rel=\"noreferrer noopener\" href=\"https:\/\/yttm-work.jp\/model_render\/model_render_0001.html\" data-type=\"URL\" data-id=\"https:\/\/yttm-work.jp\/model_render\/model_render_0001.html\" target=\"_blank\">YTMMWORK<\/a>\u300d\u3055\u3093\u306e\u8a18\u4e8b\u304c\u5206\u304b\u308a\u3084\u3059\u304b\u3063\u305f\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<h2 class=\"has-vivid-purple-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%B8%89%E8%A7%92%E9%8C%90%E3%81%AE%E4%BD%93%E7%A9%8D%E8%A8%88%E7%AE%97\"><\/span>\u4e09\u89d2\u9310\u306e\u4f53\u7a4d\u8a08\u7b97<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4e09\u89d2\u9310\u306e\u4f53\u7a4d\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3067\u3059\u304c\u7b54\u3048\u3068\u3057\u3066\u306f\u4e0b\u8a18\u3067\u3059\u3002<\/p>\n\n\n\n<p>\\( \\frac{1}{6} ( \\vec{a} \\times \\vec{b} ) \\cdot \\vec{c} \\)<\/p>\n\n\n\n<p>\u521d\u3081\u3066\u898b\u305f\u6642\u306b\u610f\u5473\u304c\u5206\u304b\u3089\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u4e0b\u8a18\u306f\u4e00\u5fdc\u8aac\u660e\u3092\u5fd8\u5099\u9332\u3068\u3057\u3066\u6b8b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"252\" height=\"202\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/09\/cube.png\" alt=\"\" class=\"wp-image-222\"\/><\/figure>\n\n\n\n<p>\u5148\u305a\u306f\u5916\u7a4d \\( \\vec{a} \\times \\vec{b} \\)\u306e\u90e8\u5206\u306f \u56f3\u306e\u7d2b\u90e8\u5206\u3092\u6307\u3057\u3066\u3044\u3066\u3001\u30d9\u30af\u30c8\u30eba\u3068\u30d9\u30af\u30c8\u30ebb\u306e\u306a\u3059\u9762\u7a4d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u76f4\u65b9\u4f53\u306e\u5834\u5408\u306f\u5e95\u9762\u7a4d \\( \\vec{a} \\times \\vec{b} \\) \u306b\u9ad8\u3055\\( |\\vec{c}| \\)\u3092\u304b\u3051\u308b\u3068\u4f53\u7a4d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3067\u306f\u30d9\u30af\u30c8\u30ebc\u304c\u50be\u3044\u3066\u3044\u305f\u5834\u5408\u306f\uff1f\u3068\u8a00\u3046\u3068\u3001\u9ad8\u3055\u306f \\( \\vec{c}\u3000\\times \\csc\u3000\\theta \\)\u3067\u8a08\u7b97\u51fa\u6765\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u5e95\u9762\u7a4d\u00d7\u9ad8\u3055\u306e\u516c\u5f0f\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u5185\u7a4d\u305d\u306e\u307e\u307e\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"272\" height=\"192\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/cube2.png\" alt=\"\" class=\"wp-image-227\"\/><\/figure>\n\n\n\n<p> \u3053\u3053\u3067\u3001\u4e09\u89d2\u9310\u306e\u516c\u5f0f \\( \\frac{1}{3} \\times \u9ad8\u3055 \\times  \u9762\u7a4d \\) \u306b\u305d\u308c\u305e\u308c\u5024\u3092\u5165\u308c\u308b\u3068<\/p>\n\n\n\n<p>\\( \\frac{1}{3} \\times \\vec{c} \\times \\csc \\theta \\times \\frac{1}{2} \\vec{a} \\times \\vec{b} \\)\u3068\u306a\u308b\u306e\u3067\u3001\u3053\u308c\u3092\u6574\u7406\u3057\u3066<\/p>\n\n\n\n<p> \\( \\frac{1}{6} ( \\vec{a} \\times \\vec{b} ) \\cdot \\vec{c} \\) <\/p>\n\n\n\n<p>\u3068\u306a\u308a\u307e\u3059\u3002\uff08\u5e95\u9762\u7a4d\u304c\u534a\u5206\u306a\u306e\u3067\\( \\frac{1}{6} \\)\u304c\u51fa\u3066\u304f\u308b\uff09<\/p>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<h2 class=\"has-vivid-purple-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%A2%E3%83%AB%E3%82%B4%E3%83%AA%E3%82%BA%E3%83%A0%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\"><\/span>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30dd\u30ea\u30b4\u30f3\u30c7\u30fc\u30bf\u3068\u4e09\u89d2\u9310\u306e\u4f53\u7a4d\u306e\u8a08\u7b97\u65b9\u6cd5\u306e\u6b21\u306f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>obj\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u9069\u5f53\u306b\uff11\u500b\u306e\u30dd\u30ea\u30b4\u30f3\u3092\u9078\u3076\u3068\u4e09\u89d2\u5f62\u306b\u306a\u308b\u306e\u3067\u3001\u4e09\u89d2\u5f62\u306e3\u70b9\u306b\u539f\u70b9\u3092\u8db3\u3057\u3066\u7121\u7406\u3084\u308a\u4e09\u89d2\u9310\u306b\u3057\u3066\u3084\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30a4\u30e1\u30fc\u30b8\u7684\u306b\u306f\u30c9\u30fc\u30ca\u30c3\u30c4\u306e\u5916\u5074\u306e\u4e09\u89d2\u5f62\u3092\u9078\u3093\u3067\u7a74\u306e\u771f\u3093\u4e2d\u3092\u539f\u70b9\u3068\u3057\u305f\u5834\u5408\u306b\u4e0b\u56f3\u306e\u3088\u3046\u306a\u4e09\u89d2\u9310\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"366\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/outer.png\" alt=\"\" class=\"wp-image-231\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/outer.png 500w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/outer-300x220.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>\u3053\u306e\u72b6\u614b\u3067\u306f\u30c9\u30fc\u30ca\u30c3\u30c4\u306e\u7a74\u306e\u90e8\u5206\u307e\u3067\u4f53\u7a4d\u304c\u8db3\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3059\u304c\u3001\u4eca\u5ea6\u306f\u30c9\u30fc\u30ca\u30c3\u30c4\u306e\u7a74\u306e\u5185\u5074\u306e\u4e09\u89d2\u30e1\u30c3\u30b7\u30e5\u3092\u9078\u3076\u3068\u4e01\u5ea6\u826f\u304f\u7a7a\u6d1e\u90e8\u5206\u306e\u4f53\u7a4d\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"386\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/inner.png\" alt=\"\" class=\"wp-image-232\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/inner.png 500w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/inner-300x232.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>\u554f\u984c\u306f\u3069\u3046\u3084\u3063\u3066\u90fd\u5408\u3088\u304f\u7a74\u306e\u5916\u5074\u306e\u4e09\u89d2\u9310\u304b\u3089\u7a74\u306e\u5185\u5074\u306e\u4e09\u89d2\u9310\u3092\u5f15\u304d\u7b97\u3059\u308b\u304b\uff1f\u3067\u3059\u3002<\/p>\n\n\n\n<p>obj\u30d5\u30a1\u30a4\u30eb\u306f\u9762\u3092\u8868\u304b\u3089\u898b\u305f\u6642\u306b\u53cd\u6642\u8a08\u56de\u308a\u306b\u306a\u308b\u3088\u3046\u306b\u9806\u756a\u306b\u5ea7\u6a19\u3092\u6c7a\u3081\u3066\u3044\u308b\u305d\u3046\u306a\u306e\u3067\u3001\u305d\u306e\u9806\u756a\u901a\u308a\u306b\u30d9\u30af\u30c8\u30eb\u5316\u3057\u3066\u3084\u308b\u3068\u4e0a\u3067\u6c42\u3081\u305f\u4e09\u89d2\u9310\u306e\u4f53\u7a4d\u306e\u5916\u7a4d\u8a08\u7b97\u90e8\u5206\\( ( \\vec{a} \\times \\vec{b} ) \\)\u306b\u3088\u3063\u3066\u00b1\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"549\" height=\"301\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/volume.png\" alt=\"\" class=\"wp-image-234\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/volume.png 549w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/volume-300x164.png 300w\" sizes=\"auto, (max-width: 549px) 100vw, 549px\" \/><\/figure>\n\n\n\n<p>\u3053\u308c\u3067\u90fd\u5408\u3088\u304f\u30d7\u30e9\u30b9\u3068\u30de\u30a4\u30ca\u30b9\u304c\u6253\u3061\u6d88\u3057\u3042\u3063\u3066\u3001\u30c9\u30fc\u30ca\u30c3\u30c4\u306e\u4f53\u7a4d\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<h2 class=\"has-vivid-purple-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"python%E3%82%B3%E3%83%BC%E3%83%89%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB\"><\/span>python\u30b3\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>git\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3066\u3042\u308b\u30b3\u30fc\u30c9\u8aac\u660e\u3067\u3059\u3002(<a href=\"https:\/\/github.com\/samsumario\/el_oso_ve_efectos\/tree\/main\/obj_volume\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/github.com\/samsumario\/el_oso_ve_efectos\/tree\/main\/obj_volume<\/a>)<\/p>\n\n\n\n<p>obj\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080def read_obj_file\u3068\u4e09\u89d2\u9310\u306e\u4f53\u7a4d\u3092\u3072\u305f\u3059\u3089\u8a08\u7b97\u3057\u3066\u8db3\u3057\u3066\u3044\u304fdef cal_volume\u306e\uff12\u3064\u306b\u5206\u3051\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<p class=\"has-vivid-green-cyan-color has-text-color\">read_obj_file\u306e\u5185\u5bb9<\/p>\n\n\n\n<p>\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u3066\u3001\u4e0a\u304b\u30891\u884c\u305a\u3064\u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u8aad\u307f\u8fbc\u3093\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>v\u304b\u3089\u59cb\u307e\u308b\u884c\u304c\u9802\u70b9(vertex)\u306e\u4f4d\u7f6e\u60c5\u5831\u3001f\u304b\u3089\u59cb\u307e\u308b\u884c\u304c\u4e09\u89d2\u30e1\u30c3\u30b7\u30e5\u3092\u69cb\u6210\u3059\u308b\u9802\u70b9\u60c5\u5831\u306a\u306e\u3067\u305d\u308c\u305e\u308carray\u3068\u3057\u3066\u8ffd\u52a0\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u5fdc\u3001\u8aad\u307f\u8fbc\u307f\u7d50\u679c\u78ba\u8a8d\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u306b\u9802\u70b9\u3068\u30e1\u30c3\u30b7\u30e5\u306e\u500b\u6570\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<script src=\"https:\/\/gist.github.com\/samsumario\/f4b46e69682d119d489b5c081732b2ec.js\"><\/script>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<p class=\"has-vivid-green-cyan-color has-text-color\"> cal_volume\u306e\u5185\u5bb9<\/p>\n\n\n\n<p>\u9802\u70b9\u5ea7\u6a19\u3068\u30e1\u30c3\u30b7\u30e5\u30c7\u30fc\u30bf\u3092\u8cb0\u3063\u305f\u3089\u3001\u30e1\u30c3\u30b7\u30e5\uff11\u3064\u3092\u53d6\u308a\u51fa\u3057\u3066\u5bfe\u5fdc\u3059\u308b\u9802\u70b9\u5ea7\u6a19\u3092\u5f15\u3063\u5f35\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3042\u3068\u306fnp.linalg.det(dV)\/6\u3067\u4f53\u7a4d\u8a08\u7b97\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<script src=\"https:\/\/gist.github.com\/samsumario\/756eb651a503b384a9216fd744081de8.js\"><\/script>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<h2 class=\"has-vivid-purple-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%A8%88%E7%AE%97%E7%B5%90%E6%9E%9C\"><\/span>\u8a08\u7b97\u7d50\u679c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5186\u74b0\u4f53\u306e\u4f53\u7a4d\u306e\u516c\u5f0f\u306f\u7a74\u306e\u534a\u5f84\u3092a\u3001\u4e00\u756a\u5916\u5074\u306e\u534a\u5f84\u3092b\u3068\u3059\u308b\u3068\u4e0b\u8a18\u3002<\/p>\n\n\n\n<p>\\( V = \\frac{1}{4} \\pi^2(a + b)(a &#8211; b)^2 \\)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"429\" height=\"384\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/total_volume.png\" alt=\"\" class=\"wp-image-239\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/total_volume.png 429w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/total_volume-300x269.png 300w\" sizes=\"auto, (max-width: 429px) 100vw, 429px\" \/><\/figure>\n\n\n\n<p>\u7528\u610f\u3057\u305f\u30e2\u30c7\u30eb\u306eblender\u306eunit\u3092\u898b\u308b\u3068a=0.48 , b=1.52\u306a\u306e\u3067\u4f53\u7a4d\u304a\u3088\u305d5.3\u3067\u3059\u3002<\/p>\n\n\n\n<p>python\u3067\u8a08\u7b97\u3057\u305f\u3068\u3053\u308d\u3001\u7d50\u679c\u306f5.08\u3068\u5c11\u3057\u5c0f\u3055\u3081\u306b\u51fa\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u3001\u9802\u70b9(vertex)\u3092\u7d50\u3093\u3067\u5c0f\u3055\u306a\u9762\u3092\u4f5c\u308b\u3053\u3068\u3067\u5186\u3092\u8868\u73fe\u3057\u3066\u3044\u308b\u70ba\u306b\u7406\u60f3\u5f62\u72b6\u3088\u308a\u3057\u307c\u3093\u3067\u3057\u307e\u3046\u70ba\u304b\u3068\u601d\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"191\" height=\"192\" src=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/\u5916\u63a5\u5186.png\" alt=\"\" class=\"wp-image-240\" srcset=\"https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/\u5916\u63a5\u5186.png 191w, https:\/\/elosove.com\/wp-content\/uploads\/2021\/10\/\u5916\u63a5\u5186-150x150.png 150w\" sizes=\"auto, (max-width: 191px) 100vw, 191px\" \/><figcaption>\u4eca\u56de\u306epython\u30b3\u30fc\u30c9\u3060\u3068\u8a08\u7b97\u8aa4\u5dee\u306e\u65b9\u304c\u5927\u304d\u3044\u53ef\u80fd\u6027\u3082\u6392\u9664\u3057\u304d\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u4eca\u56de\u306f\u53d6\u308a\u5408\u3048\u305a\u4ee5\u4e0a\u3067\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<h2 class=\"has-vivid-purple-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83%E3%82%B5%E3%82%A4%E3%83%88\"><\/span>\u53c2\u8003\u30b5\u30a4\u30c8<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-df-talk wp-block-embed-df-talk\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"vW1IUqx4nH\"><a href=\"https:\/\/dftalk.jp\/?p=9536\">\u30dd\u30ea\u30b4\u30f3\u306e\u4f53\u7a4d\u3092\u6c42\u3081\u308b\uff08Python Tips\u304a\u307e\u3051\u4ed8\u304d\uff09<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u30dd\u30ea\u30b4\u30f3\u306e\u4f53\u7a4d\u3092\u6c42\u3081\u308b\uff08Python Tips\u304a\u307e\u3051\u4ed8\u304d\uff09&#8221; &#8212; DF TALK\" src=\"https:\/\/dftalk.jp\/?p=9536&#038;embed=true#?secret=YOosn6Volc#?secret=vW1IUqx4nH\" data-secret=\"vW1IUqx4nH\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-link is-provider-\u8a66\u884c\u932f\u8aa4 wp-block-embed-\u8a66\u884c\u932f\u8aa4\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"sQ70NDKGpq\"><a href=\"https:\/\/shikousakugo.wordpress.com\/2013\/08\/25\/volume\/\">\u30e2\u30c7\u30eb\u306e\u4f53\u7a4d\u3092\u8a08\u7b97\u3059\u308b<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u30e2\u30c7\u30eb\u306e\u4f53\u7a4d\u3092\u8a08\u7b97\u3059\u308b&#8221; &#8212; \u8a66\u884c\u932f\u8aa4\" src=\"https:\/\/shikousakugo.wordpress.com\/2013\/08\/25\/volume\/embed\/#?secret=kE9XRHXIxc#?secret=sQ70NDKGpq\" data-secret=\"sQ70NDKGpq\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-hatena-blog wp-block-embed-hatena-blog\"><div class=\"wp-block-embed__wrapper\">\n<iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" 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