{"id":2454,"date":"2016-11-23T04:14:07","date_gmt":"2016-11-22T19:14:07","guid":{"rendered":"http:\/\/stuffy.dip.jp\/wordpress\/?p=2454"},"modified":"2017-05-29T16:15:40","modified_gmt":"2017-05-29T07:15:40","slug":"equiped-function-kaiten","status":"publish","type":"post","link":"https:\/\/www.stuffy.site\/wordpress\/?p=2454","title":{"rendered":"\u56de\u8ee2\u306e\u5b9f\u88c5"},"content":{"rendered":"

\u524d\u56de\u306e\u7d9a\u304d\u3067\u3059\u3002\u56de\u8ee2\u3092\u5b9f\u88c5\u3059\u308b\u306b\u3042\u305f\u308a\u3001kaiten\u95a2\u6570\u3067canvas \u3092clearRect \u3057\u3066\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3057\u305f\u6570\u5024\u3092\u914d\u5217\u306b\u30e1\u30e2\u3001var draw = function(x)\u3092\u547c\u3073\u51fa\u3057\u3066\u518d\u63cf\u753b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

https:\/\/stuffy.mydns.jp\/~gusachan\/javascript\/rotate.html<\/a><\/p>\n

<body>\r\n<th>rotate \u95a2\u6570<\/th><br>\r\n<canvas id=\"graph\" width=\"400\" height=\"400\"> <\/canvas><br>\r\n<form>\u56de\u8ee2\u89d2\u5ea6\uff1a <input type=\"text\" id='degree'>\u3000<button type='button' onclick=\"kaiten();\">\u56de\u8ee2<\/button><\/form>\r\n<script type=\"text\/javascript\">\r\nvar i = 0, dgr = [0];\r\nvar c=document.getElementById(\"graph\");\r\nvar ctx=c.getContext(\"2d\"); \r\n<\/span>\r\nfunction rads(x) {\r\n\u00a0 return Math.PI*x\/180;\r\n}\r\nfunction coordinate() {\r\n\u00a0 ctx.beginPath();\r\n\u00a0 ctx.moveTo(0,200);\r\n\u00a0 ctx.lineTo(400,200);\r\n\u00a0 ctx.moveTo(200,0);\r\n\u00a0 ctx.lineTo(200,400);\r\n\u00a0 ctx.closePath();\r\n\u00a0 ctx.stroke();\r\n\u00a0 ctx.beginPath();\r\n\u00a0 ctx.arc(200,200,150,0,rads(360),false);\r\n\u00a0 ctx.stroke();\r\n}\r\nvar draw = function(x) {\r\n\u00a0 ctx.beginPath();\r\n\u00a0 ctx.moveTo(200,200);\r\n\u00a0 ctx.lineTo(200 + 150*Math.cos(rads(x)), 200 - 150*Math.sin(rads(x)));\r\n\u00a0 ctx.closePath();\r\n\u00a0 ctx.stroke();\r\n};\r\nvar sum = function(arr) {\r\n\u00a0 var sum = 0;\r\n\u00a0 arr.forEach(function(elm) {\r\n\u00a0\u00a0\u00a0 sum += elm;\r\n\u00a0 });\r\n\u00a0 return sum;\r\n};\r\nfunction kaiten() {\r\n\u00a0 var e = document.getElementById('degree');\r\n\u00a0 var arg = Number(e.value);\r\n\u00a0 i += 1;\r\n\u00a0 dgr[i] = arg;\r\n\u00a0 ctx.clearRect(0,0,400,400);\r\n\u00a0 coordinate();\r\n\u00a0 draw(sum(dgr));\r\n}\r\ncoordinate();\r\n<\/script>\r\n<\/body><\/span><\/pre>\n
\u8ffd\u8a18\uff09<\/p>\n
var c=document.getElementById(\"graph\");\r\nvar ctx=c.getContext(\"2d\");<\/span><\/pre>\n
\u4e0a\u8a18\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u5909\u6570<\/del>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5ba3\u8a00\u306f\u3001coordinate, draw \u95a2\u6570\u306e\u30ed\u30fc\u30ab\u30eb\u5185\u3067\u5ba3\u8a00\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08\u6b63\u78ba\u306b\u306fwindow\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u5ba3\u8a00\u3057\u3066\u3082\u554f\u984c\u306a\u304b\u3063\u305f\u3088\u3046\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u524d\u56de\u306e\u7d9a\u304d\u3067\u3059\u3002\u56de\u8ee2\u3092\u5b9f\u88c5\u3059\u308b\u306b\u3042\u305f\u308a\u3001kaiten\u95a2\u6570\u3067canvas \u3092clearRect \u3057\u3066\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3057\u305f\u6570\u5024\u3092\u914d\u5217\u306b\u30e1\u30e2\u3001var draw = function(x)\u3092\u547c\u3073\u51fa\u3057\u3066\u518d\u63cf\u753b\u3057\u3066\u3044\u307e\u3059\u3002 h … \u7d9a\u304d\u3092\u8aad\u3080 \u56de\u8ee2\u306e\u5b9f\u88c5<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87,5],"tags":[],"class_list":["post-2454","post","type-post","status-publish","format-standard","hentry","category-javascript","category-software"],"_links":{"self":[{"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2454"}],"version-history":[{"count":11,"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2454\/revisions"}],"predecessor-version":[{"id":2486,"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2454\/revisions\/2486"}],"wp:attachment":[{"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stuffy.site\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}