{"id":1408,"date":"2015-10-21T15:52:13","date_gmt":"2015-10-21T06:52:13","guid":{"rendered":"http:\/\/www.digifie.jp\/blog\/?p=1408"},"modified":"2015-10-21T22:28:52","modified_gmt":"2015-10-21T13:28:52","slug":"three-js-%e3%81%a7%e8%a1%9d%e7%aa%81%e5%88%a4%e5%ae%9a","status":"publish","type":"post","link":"https:\/\/www.digifie.jp\/blog\/archives\/1408","title":{"rendered":"three.js \u3067\u885d\u7a81\u5224\u5b9a"},"content":{"rendered":"<div class='wp_social_bookmarking_light'>        <div class=\"wsbl_facebook\"><a href='http:\/\/www.facebook.com\/share.php?u=https%3A%2F%2Fwww.digifie.jp%2Fblog%2Farchives%2F1408&t=three.js%20%E3%81%A7%E8%A1%9D%E7%AA%81%E5%88%A4%E5%AE%9A' title='Facebook \u306b\u30b7\u30a7\u30a2' rel=nofollow class='wp_social_bookmarking_light_a' target=_blank><img src='https:\/\/www.digifie.jp\/blog\/wp-content\/plugins\/wp-social-bookmarking-light\/public\/images\/facebook.png' alt='Facebook \u306b\u30b7\u30a7\u30a2' title='Facebook \u306b\u30b7\u30a7\u30a2' width='16' height='16' class='wp_social_bookmarking_light_img' \/><\/a><\/div>        <div class=\"wsbl_twitter\"><a href=\"https:\/\/twitter.com\/share\" class=\"twitter-share-button\" data-url=\"https:\/\/www.digifie.jp\/blog\/archives\/1408\" data-text=\"three.js \u3067\u885d\u7a81\u5224\u5b9a\" data-via=\"LLC DigiFie\" data-lang=\"ja\">Tweet<\/a><\/div><\/div>\n<br class='wp_social_bookmarking_light_clear' \/>\n<div id=\"attachment_1409\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/digifie.jp\/labo\/threejs_ex\/wt_raycast_test\/\"><img aria-describedby=\"caption-attachment-1409\" decoding=\"async\" loading=\"lazy\" src=\"http:\/\/www.digifie.jp\/blog\/wp-content\/uploads\/2015\/10\/151021.jpg\" alt=\"demo\" width=\"600\" height=\"285\" class=\"size-full wp-image-1409\" srcset=\"https:\/\/www.digifie.jp\/blog\/wp-content\/uploads\/2015\/10\/151021.jpg 600w, https:\/\/www.digifie.jp\/blog\/wp-content\/uploads\/2015\/10\/151021-300x143.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><p id=\"caption-attachment-1409\" class=\"wp-caption-text\">\u753b\u50cf\u3092\u30af\u30ea\u30c3\u30af\u3067\u30c7\u30e2\u30da\u30fc\u30b8\u304c\u958b\u304d\u307e\u3059\u3002<br \/>\u5e02\u8857\u5730\u306e3D\u30e2\u30c7\u30eb\u306f http:\/\/tf3dm.com \u306e\u3082\u306e\u3092\u4f7f\u7528\u3055\u305b\u3066\u3044\u305f\u3060\u3044\u3066\u3044\u307e\u3059\u3002<\/p><\/div>\n<p>three.js \u306e\u30ab\u30e1\u30e9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u885d\u7a81\u5224\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u3063\u305f\u305f\u3081\u3001\u8272\u3005\u8abf\u3079\u3066\u5b9f\u88c5\u3057\u3066\u307f\u305f\u306e\u3067\u30e1\u30e2\u3002<\/p>\n<p>three.js \u3067\u885d\u7a81\u5224\u5b9a\u3092\u884c\u3046\u305f\u3081\u306b\u306f Raycaster \u3068\u3044\u3046\u4e8c\u6b21\u5143\u5e73\u9762\u4e0a\u306e\u4e00\u70b9\u304b\u3089\u5149\u7dda\u3092\u5f15\u3044\u3066\u305d\u306e\u7dda\u4e0a\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08Mash\uff09\u3068\u306e\u885d\u7a81\u3092\u5224\u5b9a\u3059\u308b\u30af\u30e9\u30b9\u3067\u884c\u3046\u305d\u3046\u3067\u3059\u3002<\/p>\n<p>\u3067\u3001\u3053\u306e Raycaster \u3092\u4f7f\u7528\u3057\u305f\u885d\u7a81\u5224\u5b9a\u306e\u5b9f\u88c5\u65b9\u6cd5\u3067\u3059\u304c\u3001\u307e\u305a\u885d\u7a81\u306e\u5224\u5b9a\u5148\u3068\u306a\u308b\u30e1\u30c3\u30b7\u30e5\uff08\u4e0a\u8a18\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u5efa\u7269\u3084\u5730\u9762\u306e\u30e1\u30c3\u30b7\u30e5\uff09\u3092\u914d\u5217\u306b\u683c\u7d0d\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"brush: jscript; title: ; notranslate\" title=\"\">\r\nvar meshs = [];\r\nfor( var i = 0; i &gt; object.children.length; i++ )\r\n{\r\n  \/\/ \u8aad\u307f\u8fbc\u3093\u3060 obj \u30e2\u30c7\u30eb\u304b\u3089 Object3D \u3092\u53d6\u308a\u51fa\u3059\r\n  var obj3d = object.children[ i ];\r\n  for( var j = 0; j &gt; obj3d.children.length; j++ )\r\n  {\r\n    \/\/ Object3D \u304b\u3089 Mesh \u3092\u53d6\u5f97\u3057\u914d\u5217\u306b\u5165\u308c\u308b\r\n    meshs.push( obj3d.children[ j ] );\r\n  }\r\n}\r\n<\/pre>\n<p>\u6b21\u306b\u3001Raycaster \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3066\u885d\u7a81\u5224\u5b9a\u3092\u884c\u3044\u305f\u3044 Vector3 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08\u4eca\u56de\u306f\u30ab\u30e1\u30e9\u306e\u30dd\u30b8\u30b7\u30e7\u30f3\uff09\u3068\u3001\u885d\u7a81\u5224\u5b9a\u3092\u884c\u3046\uff08Raycaster \u3092\u5411\u3051\u308b\uff09\u65b9\u5411\uff08Vector3\uff09\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\n\u6700\u5f8c\u306b Raycaster.intersectObjects \u306b\u5148\u307b\u3069\u4f5c\u6210\u3057\u305f\u885d\u7a81\u5224\u5b9a\u5bfe\u8c61\u3068\u306a\u308b\u30e1\u30c3\u30b7\u30e5\u306e\u30ea\u30b9\u30c8\u3092\u6e21\u3057\u3066\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n<pre class=\"brush: jscript; title: ; notranslate\" title=\"\">\r\n\/\/ camera \u306b Raycaster \u3092\u4f5c\u6210\u3057\u3066\u4e0b\u65b9\u5411\u306b ray \u3092\u5411\u3051\u308b\r\nvar ray = new THREE.Raycaster(camera.position, new THREE.Vector3(0, -1, 0));\r\n\/\/ intersectObjects \u306b\u885d\u7a81\u5224\u5b9a\u5bfe\u8c61\u306e\u30e1\u30c3\u30b7\u30e5\u306e\u30ea\u30b9\u30c8\u3092\u6e21\u3059\r\nvar objs = ray.intersectObjects( meshs );\r\n<\/pre>\n<p>\u3053\u306e Raycaster.intersectObjects \u3092\u6bce\u30d5\u30ec\u30fc\u30e0\u76e3\u8996\u3059\u308b\u3068\u885d\u7a81\u304c\u3042\u308b\u5834\u5408\u306f\u3053\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u6570\u304c 1 \u4ee5\u4e0a\u306b\u306a\u308a\u3001\u3053\u306e\u914d\u5217\u306e\u4e2d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ad\u30fc distance \u3067\u885d\u7a81\u5224\u5b9a\u5bfe\u8c61\u307e\u3067\u306e\u8ddd\u96e2\u304c\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3042\u3068\u306f\u3001\u3053\u306e\u8ddd\u96e2\u3092\u5229\u7528\u3057\u3066\u79fb\u52d5\u3092\u6b62\u3081\u305f\u308a\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u305f\u308a\u3068\u3084\u308a\u305f\u3044\u3053\u3068\u3092\u3084\u308c\u3070\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n<pre class=\"brush: jscript; title: ; notranslate\" title=\"\">\r\nif( objs.length &gt; 0 )\r\n{\r\n\tvar dist = objs[0].distance;\r\n\tconsole.log( dist ); \/\/ \u885d\u7a81\u5224\u5b9a\u5bfe\u8c61\u307e\u3067\u306e\u8ddd\u96e2\r\n\r\n\t\/\/ \u4f8b\uff09\u885d\u7a81\u5bfe\u8c61\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u306e\u8ddd\u96e2\u304c 0 \u306b\u306a\u3063\u305f\u5834\u5408\r\n\tif( dist &lt;= 0 )\r\n\t{\r\n\t\u3000\u3000\/\/ \u3084\u308a\u305f\u3044\u51e6\u7406\u3092\u884c\u3046\r\n\t}\r\n}\r\n<\/pre>\n<p>\u57fa\u672c\u7684\u306b\u306f\u3053\u306e\u3088\u3046\u306a\u6d41\u308c\u3067\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306e\u30b5\u30f3\u30d7\u30eb\u306f Raycaster \u3092\u4f7f\u7528\u3057\u3066\u3001\u4e0b\u65b9\u5411\u306e\u5224\u5b9a\u3067\u6bb5\u5dee\u3092\u3092\u8d8a\u3048\u308b\u3068\u304d\u30ab\u30e1\u30e9\u306e\u9ad8\u3055\u304c\u4e0a\u304c\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u306e\u3068\u3001\u524d\u5f8c\u5de6\u53f3\u65b9\u5411\u306e\u5224\u5b9a\u3067\u5efa\u7269\u3092\u30ab\u30e1\u30e9\u304c\u3059\u308a\u629c\u3051\u306a\u3044\u3088\u3046\u306b\u885d\u7a81\u5224\u5b9a\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u25a0 \u4eca\u56de\u53c2\u8003\u306b\u3055\u305b\u3066\u3044\u305f\u3060\u3044\u305f\u30da\u30fc\u30b8<br \/>\n<a href=\"http:\/\/threejs.org\/docs\/#Reference\/Core\/Raycaster\" target=\"_blank\">http:\/\/threejs.org\/docs\/#Reference\/Core\/Raycaster<\/a><br \/>\n<a href=\"http:\/\/threejs.org\/examples\/#webgl_geometry_terrain_raycast\" target=\"_blank\">http:\/\/threejs.org\/examples\/#webgl_geometry_terrain_raycast<\/a><br \/>\n<a href=\"http:\/\/qiita.com\/edo_m18\/items\/5aff5c5e4f421ddd97dc\" target=\"_blank\">http:\/\/qiita.com\/edo_m18\/items\/5aff5c5e4f421ddd97dc<\/a><br \/>\n<a href=\"http:\/\/naoyashiga.hatenablog.com\/entry\/2013\/10\/14\/235134\" target=\"_blank\">http:\/\/naoyashiga.hatenablog.com\/entry\/2013\/10\/14\/235134<\/a><\/p>\n<div class='wp_social_bookmarking_light'>        <div class=\"wsbl_facebook\"><a href='http:\/\/www.facebook.com\/share.php?u=https%3A%2F%2Fwww.digifie.jp%2Fblog%2Farchives%2F1408&t=three.js%20%E3%81%A7%E8%A1%9D%E7%AA%81%E5%88%A4%E5%AE%9A' title='Facebook \u306b\u30b7\u30a7\u30a2' rel=nofollow class='wp_social_bookmarking_light_a' target=_blank><img src='https:\/\/www.digifie.jp\/blog\/wp-content\/plugins\/wp-social-bookmarking-light\/public\/images\/facebook.png' alt='Facebook \u306b\u30b7\u30a7\u30a2' title='Facebook \u306b\u30b7\u30a7\u30a2' width='16' height='16' class='wp_social_bookmarking_light_img' \/><\/a><\/div>        <div class=\"wsbl_twitter\"><a href=\"https:\/\/twitter.com\/share\" class=\"twitter-share-button\" data-url=\"https:\/\/www.digifie.jp\/blog\/archives\/1408\" data-text=\"three.js \u3067\u885d\u7a81\u5224\u5b9a\" data-via=\"LLC DigiFie\" data-lang=\"ja\">Tweet<\/a><\/div><\/div>\n<br class='wp_social_bookmarking_light_clear' \/>\n","protected":false},"excerpt":{"rendered":"<p>three.js \u306e\u30ab\u30e1\u30e9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u885d\u7a81\u5224\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u3063\u305f\u305f\u3081\u3001\u8272\u3005\u8abf\u3079\u3066\u5b9f\u88c5\u3057\u3066\u307f\u305f\u306e\u3067\u30e1\u30e2\u3002 three.js \u3067\u885d\u7a81\u5224\u5b9a\u3092\u884c\u3046\u305f\u3081\u306b\u306f Raycaster \u3068\u3044\u3046\u4e8c\u6b21\u5143\u5e73\u9762\u4e0a\u306e\u4e00\u70b9\u304b\u3089\u5149\u7dda\u3092\u5f15\u3044\u3066\u305d\u306e\u7dda\u4e0a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[45],"tags":[],"_links":{"self":[{"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/posts\/1408"}],"collection":[{"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/comments?post=1408"}],"version-history":[{"count":10,"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/posts\/1408\/revisions"}],"predecessor-version":[{"id":1419,"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/posts\/1408\/revisions\/1419"}],"wp:attachment":[{"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/media?parent=1408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/categories?post=1408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.digifie.jp\/blog\/wp-json\/wp\/v2\/tags?post=1408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}