{"id":93,"date":"2013-05-11T19:14:50","date_gmt":"2013-05-11T10:14:50","guid":{"rendered":"http:\/\/appw.jp\/html5x\/?p=93"},"modified":"2013-05-11T19:18:38","modified_gmt":"2013-05-11T10:18:38","slug":"html5-canvas-%e3%81%a7%e7%94%bb%e5%83%8f%e3%81%ae%e8%a1%a8%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/appw.jp\/html5x\/?p=93","title":{"rendered":"HTML5 Canvas \u3067\u753b\u50cf\u306e\u8868\u793a"},"content":{"rendered":"<p>HTML5 Canvas \u3067\u3001\u753b\u50cf\u306e\u8868\u793a\u3092\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002<br \/>\n\u8868\u793a\u3059\u308b\u3060\u3051\u306a\u3089 img \u30bf\u30b0\u306e\u5229\u7528\u3067\u5341\u5206\u3067\u3059\u306e\u3067\u3001\u3044\u304f\u3064\u304b\u7de8\u96c6\u3092\u5165\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Canvas \u306b\u3064\u3044\u3066\u306f\u3001\u591a\u304f\u306e\u65b9\u304c\u4f7f\u7528\u65b9\u6cd5\u306a\u3069\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3055\u308c\u3066\u3044\u3089\u3063\u3057\u3083\u308b\u306e\u3067\u3001\u308f\u305f\u3057\u306e\u307b\u3046\u3067\u306f\u7279\u306b\u8aac\u660e\u306a\u3069\u306f\u7701\u3044\u3066\u3044\u307e\u3059\u304c\u3001\u7c21\u5358\u306b\u3069\u306e\u3088\u3046\u306a\u7de8\u96c6\u3092\u52a0\u3048\u3066\u8a66\u3057\u3066\u307f\u305f\u306e\u304b\u3068\u3044\u3046\u3053\u3068\u3092\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u4e2d\u306e\u30b3\u30e1\u30f3\u30c8\u306b\u3044\u308c\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<pre><code>&lt;canvas id=\"canv1\" width=\"300px\" height=\"300px\"&gt;&lt;\/canvas&gt;\r\n\r\n&lt;script type=\"text\/javascript\"&gt;\r\nonload = function() {\r\n  draw();\r\n};\r\nfunction draw() {\r\n  var canvas = document.getElementById('canv1');\r\n  if ( ! canvas || ! canvas.getContext ) { return false; }\r\n  var ctx = canvas.getContext('2d');\r\n\/* \u77e9\u5f62\u3092\u63cf\u753b\u3057\u3001\u305d\u306e\u5185\u5074\u3092\u767d\u3067\u5857\u308a\u3064\u3076\u3057\u307e\u3059\u3002 *\/\r\n  ctx.beginPath();\r\n  ctx.rect(0, 0, 300, 300);\r\n  ctx.fillStyle = \"rgb(255,255,255)\";\r\n  ctx.fill();\r\n\/* \u5186\u5f27\u3092\u63cf\u753b\u3057\u3001\u305d\u306e\u5185\u90e8\u3092\u30af\u30ea\u30c3\u30d4\u30f3\u30b0\u9818\u57df\u306b\u3057\u307e\u3059\u3002 *\/\r\n  ctx.beginPath();\r\n  ctx.arc(150, 150, 140, 0, Math.PI * 2, false);\r\n  ctx.clip();\r\n\/* \u753b\u50cf\u3092\u8aad\u307f\u8fbc\u307f\u3001\u8868\u793a\u3057\u307e\u3059\u3002 *\/\r\n  var img = new Image();\r\n  img.src = \"http:\/\/appw.jp\/images\/IMG00004.jpg?\" + new Date().getTime();\r\n\r\n  img.onload = function() {\r\n    ctx.drawImage(img, 160, 80, 300, 300, 0, 0, 300, 300);\r\n  }\r\n}\r\n&lt;\/script&gt;<\/code><\/pre>\n<p><canvas id=\"canv1\" width=\"300px\" height=\"300px\"><\/canvas><\/p>\n<pre><code>\r\n\r\n<script type=\"text\/javascript\">\r\nonload = function() {\r\n  draw();\r\n};\r\nfunction draw() {\r\n  var canvas = document.getElementById('canv1');\r\n  if ( ! canvas || ! canvas.getContext ) { return false; }\r\n  var ctx = canvas.getContext('2d');\r\n\r\n  ctx.beginPath();\r\n  ctx.rect(0, 0, 300, 300);\r\n  ctx.fillStyle = \"rgb(255,255,255)\";\r\n  ctx.fill();\r\n\r\n  ctx.beginPath();\r\n  ctx.arc(150, 150, 140, 0, Math.PI * 2, false);\r\n  ctx.clip();\r\n\r\n  var img = new Image();\r\n  img.src = \"http:\/\/appw.jp\/images\/IMG00004.jpg?\" + new Date().getTime();\r\n\r\n  img.onload = function() {\r\n    ctx.drawImage(img, 160, 80, 300, 300, 0, 0, 300, 300);\r\n  }\r\n}\r\n<\/script><\/code><\/pre>\n<p>\u753b\u50cf\u306e\u7de8\u96c6\u306b\u306f\u3001\u9ad8\u6a5f\u80fd\u306e\u30a2\u30d7\u30ea\u304c\u3044\u304f\u3064\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u305f\u3060\u8868\u793a\u3059\u308b\u3060\u3051\u3067\u3042\u308c\u3070\u3001Canvas \u3092\u4f7f\u7528\u3059\u308b\u307e\u3067\u3082\u306a\u3055\u305d\u3046\u3067\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u7684\u306b\u8868\u793a\u3055\u305b\u305f\u3044\u3088\u3046\u306a\u30a2\u30a4\u30c7\u30a2\u304c\u3042\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u305d\u306e\u65b9\u6cd5\u306e\u3072\u3068\u3064\u3068\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>HTML5 Canvas \u3067\u3001\u753b\u50cf\u306e\u8868\u793a\u3092\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002 \u8868\u793a\u3059\u308b\u3060\u3051\u306a\u3089 img \u30bf\u30b0\u306e\u5229\u7528\u3067\u5341\u5206\u3067\u3059\u306e\u3067\u3001\u3044\u304f\u3064\u304b\u7de8\u96c6\u3092\u5165\u308c\u3066\u3044\u307e\u3059\u3002 Canvas \u306b\u3064\u3044\u3066\u306f\u3001\u591a\u304f\u306e\u65b9\u304c\u4f7f\u7528\u65b9\u6cd5\u306a\u3069\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3055\u308c\u3066\u3044\u3089\u3063 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-93","post","type-post","status-publish","format-standard","hentry","category-html5"],"_links":{"self":[{"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=\/wp\/v2\/posts\/93","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=93"}],"version-history":[{"count":0,"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions"}],"wp:attachment":[{"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/appw.jp\/html5x\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}