{"id":4755,"date":"2016-03-25T18:39:28","date_gmt":"2016-03-25T09:39:28","guid":{"rendered":"https:\/\/gunmagisgeek.com\/wordpress\/?p=4755"},"modified":"2016-11-29T11:21:30","modified_gmt":"2016-11-29T02:21:30","slug":"post-4755","status":"publish","type":"post","link":"https:\/\/gunmagisgeek.com\/blog\/d3-js\/4755","title":{"rendered":"D3.js\u3092\u4f7f\u3063\u3066\u30b8\u30a7\u30cd\u30ec\u30fc\u30c6\u30a3\u30d6\u30a2\u30fc\u30c8\u3092\u4f5c\u6210\u3057\u3066\u307f\u305f"},"content":{"rendered":"

\u6700\u8fd1\u3001D3.js\u3092\u4f7f\u3063\u3066\u30b8\u30a7\u30cd\u30ec\u30fc\u30c6\u30a3\u30d6\u30a2\u30fc\u30c8\u306e\u52c9\u5f37\u3092\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u30b4\u30e9\u30f3\u30fb\u30ec\u30f4\u30a3\u30f3\u306e\u4f5c\u54c1\u3092\u53c2\u8003\u306b\u30dc\u30ed\u30ce\u30a4\u56f3\u30a8\u30d5\u30a7\u30af\u30c8\u3092\u753b\u50cf\u306b\u9069\u7528\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

Segmentation and Symptom – Interactive Art by Golan Levin and Collaborators<\/a><\/p>\n

\u753b\u50cf\u3092\u30dc\u30ed\u30ce\u30a4\u56f3\u306b\u3059\u308b<\/h2>\n

\u9078\u3093\u3060\u753b\u50cf\u306b\u4ed6\u610f\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5143\u30cd\u30bf\u304c\u30dc\u30ed\u30ce\u30a4\u56f3\u3092\u4f7f\u3046\u3053\u3068\u3067\u88ab\u5199\u4f53\u306e\u300c\u4eca\u306b\u3082\u5d29\u308c\u843d\u3061\u3066\u3057\u307e\u3044\u305d\u3046\u306a\u7e4a\u7d30\u3055\u300d\u3092\u8868\u73fe\u3057\u3066\u3044\u305f\u306e\u3067\u3001\u9006\u3092\u72d9\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\"voroart_svg160325\"<\/a><\/p>\n

example<\/a><\/p>\n

\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/h2>\n

\u6982\u8981\u3092\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3068\u3001img\u30bf\u30b0\u3067\u8aad\u307f\u8fbc\u3093\u3060\u753b\u50cf\u3092canvas\u306b\u8ee2\u5199\u3057\u3001\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u5316\u3057\u305f\u306e\u3061\u306b\u30a8\u30c3\u30b8\u3092\u62bd\u51fa\u3001\u30d4\u30af\u30bb\u30eb\u306e\u6fc3\u6de1\u306b\u95be\u5024\u3092\u8a2d\u5b9a\u3057\u8d85\u3048\u305f\u30d4\u30af\u30bb\u30eb\u306e\u5ea7\u6a19\u3092D3.js\u306evoronoi\u95a2\u6570\u306b\u6e21\u3057\u3066\u63cf\u753b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

onload = function() {\r\n  draw();\r\n};\r\n\r\nfunction draw() {\r\n    var width = 705, height = 375;\r\n\r\n    \/\/\u753b\u50cf\u51e6\u7406\u7528\u306e\u30ad\u30e3\u30f3\u30d0\u30b9    \r\n    var canvas = document.getElementById('processing');\r\n\r\n\r\n    if ( ! canvas || ! canvas.getContext ) { return false; }\r\n    var ctx = canvas.getContext('2d');\r\n    var img = document.querySelector(\"#input\");\r\n      \r\n    ctx.drawImage(img, 0, 0); \/\/\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092canvas\u306b\u8ee2\u5199\u3059\u308b\r\n            \r\n    var imgd = ctx.getImageData(0, 0, width, height); \/\/canvas\u304b\u3089\u30d4\u30af\u30bb\u30eb\u306e\u30c7\u30fc\u30bf(\u914d\u5217)\u3092\u53d6\u5f97\u3059\u308b\r\n    var data = imgd.data;\r\n    \r\n    var gray = new Uint8ClampedArray(data.length); \r\n    var edge = new Uint8ClampedArray(data.length); \r\n    \r\n    toGray(data, gray); \/\/\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u5316\r\n\r\n    var position = getEdge(gray, width, height, 2) \/\/\u30a8\u30c3\u30b8\u3092\u62bd\u51fa\u3057\u7279\u5fb4\u70b9\u3092\u8fd4\u3059\r\n    \r\n    ctx.putImageData(imgd, 0, 0); \/\/\u5143\u753b\u50cf\u3092canvas\u306b\u51fa\u529b\u3059\u308b\r\n\r\n    d3main(position)\r\n\r\n}\r\n\r\n\/\/d3\u3067\u30dc\u30ed\u30ce\u30a4\u56f3\u3092\u66f8\u304f\r\nfunction d3main(data) {\r\n    var svg = d3.select(\"svg\")\r\n    var voronoi = d3.geom.voronoi()\r\n        .x(function(d){ return d.x } )\r\n        .y(function(d){ return d.y } );\r\n\r\n    \r\n    var vor\t= voronoi(data);\r\n    \r\n    var cell =  svg\r\n        .selectAll(\"g\")\r\n        .data(data, function(d,i){ return i })\r\n        .enter()\r\n        .append(\"g\")\r\n        .append(\"path\")\r\n        .transition()\r\n        .attr({\r\n            \"d\":function(d, i) { return \"M\" + vor[i].join(\"L\") + \"Z\"},\r\n            stroke:\"black\",\r\n            fill:\"none\",\r\n        })\r\n   \r\n}\r\n\r\n\/\/\u30a8\u30c3\u30b8\u62bd\u51fa\r\nfunction getEdge(gray, width, height, step) {\r\n    var tmp = []\r\n    for (var y = 0; y < height - 1; y+=step) {\r\n        for (var x = 0; x < width - 1; x+=step) {\r\n            var i = x + y * width; \t\r\n            var r_i = (x + 1) + y * width; \r\n            var ex = gray[r_i] - gray[i];\r\n    \r\n            var d_i = x + (y + 1) * width;\r\n            var ey = gray[d_i] - gray[i]; \r\n    \r\n            var ez = Math.sqrt(ex * ex + ey * ey);\r\n            if (ez * 2 > 10) tmp.push({x:x, y:y})\r\n        }\r\n    }\r\n    \r\n    return tmp\r\n    \r\n}\r\n\r\n\/\/\u30b0\u30ec\u30a4\u30b9\u30b1\u30fc\u30eb\u5316\r\nfunction toGray(rgba, gray) {\r\n    var length = rgba.length;\r\n    var total = 0; \r\n    for (var i = 0; i < length; i += 4) {\r\n        var g = 0.30 * rgba[i + 0] + 0.59 * rgba[i + 1] + 0.11 * rgba[i + 2];\r\n        gray[i\/4] = g;\r\n        total += g;\r\n    }\r\n    return total \/ (length \/ 4);\r\n}<\/pre>\n
\u305d\u306e\u4ed6<\/h2>\n
\u30fb canvas\u306b\u51fa\u529b<\/a>
\n\"vorart_canvas160325\"<\/a>
\n\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u5148\u3092svg\u3067\u306f\u306a\u304fcanvas\u306b\u3057\u3066\u307f\u307e\u3057\u305f\u3002
\n\u540c\u3058\u51fa\u529b\u7d50\u679c\u306b\u306a\u3063\u3066\u3082\u3064\u307e\u3089\u306a\u3044\u306e\u3067\u3001\u30c9\u30ed\u30c3\u30d7\u30b7\u30e3\u30c9\u30a6\u30a8\u30d5\u30a7\u30af\u30c8\u306a\u3093\u305e\u3092\u639b\u3051\u3066\u3044\u307e\u3059\u3002
\nsvg\u3060\u3068\u3053\u306e\u3088\u3046\u306a\u30a8\u30d5\u30a7\u30af\u30c8\u3092\u639b\u3051\u308b\u3068\u3001\u8981\u7d20\u306e\u6570\u306b\u3088\u3063\u3066\u306f\u975e\u5e38\u306b\u91cd\u304f\u306a\u308b\u306e\u3067\u3059\u304c\u3001canvas\u3060\u3068\u5feb\u9069\u3067\u3059\u306d\u3002\u30a4\u30f3\u30c8\u30e9\u30af\u30b7\u30e7\u30f3\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u306e\u3067\u3042\u308c\u3070\u3001canvas\u306f\u4fbf\u5229\u3067\u3059\u3002<\/p>\n
\u30fb video\u306b\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u304b\u3051\u308b<\/a><\/p>\n
\"voroart_video160325\"<\/a>
\n\u30c7\u30fc\u30bf\u306e\u30a4\u30f3\u30d7\u30c3\u30c8\u3092img\u8981\u7d20\u3067\u306f\u306a\u304fvideo\u8981\u7d20\u306b\u5909\u3048\u3066\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u30dc\u30ed\u30ce\u30a4\u56f3\u3092\u63cf\u753b\u3057\u3066\u3044\u307e\u3059\u3002\u3061\u3087\u3063\u3068\u3060\u3051\u30d5\u30e9\u30af\u30bf\u30eb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6700\u8fd1\u3001D3.js\u3092\u4f7f\u3063\u3066\u30b8\u30a7\u30cd\u30ec\u30fc\u30c6\u30a3\u30d6\u30a2\u30fc\u30c8\u306e\u52c9…<\/p>\n","protected":false},"author":1,"featured_media":4760,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56,18],"tags":[],"class_list":["post-4755","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-canvas","category-d3-js","has-post-thumbnail-archive"],"_links":{"self":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/posts\/4755","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/comments?post=4755"}],"version-history":[{"count":0,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/posts\/4755\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/media\/4760"}],"wp:attachment":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/media?parent=4755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/categories?post=4755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/tags?post=4755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}