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Make initial version of search cloud

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commit e7872d686a663d80f7a54817d1c7f121718a03b3 1 parent fdb5696
Per Thulin authored
Showing with 5,244 additions and 2 deletions.
  1. +11 −2 html/index.html
  2. +4,762 −0 static/d3.js
  3. +385 −0 static/d3.layout.cloud.js
  4. +86 −0 static/main.js
13 html/index.html
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@@ -3,9 +3,18 @@
<html>
<head>
<title>Youtify Search Stats</title>
+ <style>
+ html,
+ body,
+ * {
+ margin: 0;
+ padding: 0;
+ }
+ </style>
</head>
- <script src="/static/main.js">
- </script>
<body>
+ <script src="/static/d3.js"></script>
+ <script src="/static/d3.layout.cloud.js"></script>
+ <script src="/static/main.js"></script>
</body>
</html>
4,762 static/d3.js
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4,762 additions, 0 deletions not shown
385 static/d3.layout.cloud.js
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@@ -0,0 +1,385 @@
+// Word cloud layout by Jason Davies, http://www.jasondavies.com/word-cloud/
+// Algorithm due to Jonathan Feinberg, http://static.mrfeinberg.com/bv_ch03.pdf
+(function(exports) {
+ function cloud() {
+ var size = [256, 256],
+ text = cloudText,
+ font = cloudFont,
+ fontSize = cloudFontSize,
+ rotate = cloudRotate,
+ padding = cloudPadding,
+ spiral = archimedeanSpiral,
+ words = [],
+ timeInterval = Infinity,
+ event = d3.dispatch("word", "end"),
+ timer = null,
+ cloud = {};
+
+ cloud.start = function() {
+ var board = zeroArray((size[0] >> 5) * size[1]),
+ bounds = null,
+ n = words.length,
+ i = -1,
+ tags = [],
+ data = words.map(function(d, i) {
+ return {
+ text: text.call(this, d, i),
+ font: font.call(this, d, i),
+ rotate: rotate.call(this, d, i),
+ size: ~~fontSize.call(this, d, i),
+ padding: cloudPadding.call(this, d, i)
+ };
+ }).sort(function(a, b) { return b.size - a.size; });
+
+ if (timer) clearInterval(timer);
+ timer = setInterval(step, 0);
+ step();
+
+ return cloud;
+
+ function step() {
+ var start = +new Date,
+ d;
+ while (+new Date - start < timeInterval && ++i < n && timer) {
+ d = data[i];
+ d.x = (size[0] * (Math.random() + .5)) >> 1;
+ d.y = (size[1] * (Math.random() + .5)) >> 1;
+ cloudSprite(d, data, i);
+ if (place(board, d, bounds)) {
+ tags.push(d);
+ event.word(d);
+ if (bounds) cloudBounds(bounds, d);
+ else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];
+ // Temporary hack
+ d.x -= size[0] >> 1;
+ d.y -= size[1] >> 1;
+ }
+ }
+ if (i >= n) {
+ cloud.stop();
+ event.end(tags, bounds);
+ }
+ }
+ }
+
+ cloud.stop = function() {
+ if (timer) {
+ clearInterval(timer);
+ timer = null;
+ }
+ return cloud;
+ };
+
+ cloud.timeInterval = function(x) {
+ if (!arguments.length) return timeInterval;
+ timeInterval = x == null ? Infinity : x;
+ return cloud;
+ };
+
+ function place(board, tag, bounds) {
+ var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],
+ startX = tag.x,
+ startY = tag.y,
+ maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
+ s = spiral(size),
+ dt = Math.random() < .5 ? 1 : -1,
+ t = -dt,
+ dxdy,
+ dx,
+ dy;
+
+ while (dxdy = s(t += dt)) {
+ dx = ~~dxdy[0];
+ dy = ~~dxdy[1];
+
+ if (Math.min(dx, dy) > maxDelta) break;
+
+ tag.x = startX + dx;
+ tag.y = startY + dy;
+
+ if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
+ tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
+ // TODO only check for collisions within current bounds.
+ if (!bounds || !cloudCollide(tag, board, size[0])) {
+ if (!bounds || collideRects(tag, bounds)) {
+ var sprite = tag.sprite,
+ w = tag.width >> 5,
+ sw = size[0] >> 5,
+ lx = tag.x - (w << 4),
+ sx = lx & 0x7f,
+ msx = 32 - sx,
+ h = tag.y1 - tag.y0,
+ x = (tag.y + tag.y0) * sw + (lx >> 5),
+ last;
+ for (var j = 0; j < h; j++) {
+ last = 0;
+ for (var i = 0; i <= w; i++) {
+ board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
+ }
+ x += sw;
+ }
+ delete tag.sprite;
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ cloud.words = function(x) {
+ if (!arguments.length) return words;
+ words = x;
+ return cloud;
+ };
+
+ cloud.size = function(x) {
+ if (!arguments.length) return size;
+ size = [+x[0], +x[1]];
+ return cloud;
+ };
+
+ cloud.font = function(x) {
+ if (!arguments.length) return font;
+ font = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.rotate = function(x) {
+ if (!arguments.length) return rotate;
+ rotate = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.text = function(x) {
+ if (!arguments.length) return text;
+ text = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.spiral = function(x) {
+ if (!arguments.length) return spiral;
+ spiral = spirals[x + ""] || x;
+ return cloud;
+ };
+
+ cloud.fontSize = function(x) {
+ if (!arguments.length) return fontSize;
+ fontSize = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.padding = function(x) {
+ if (!arguments.length) return padding;
+ padding = d3.functor(x);
+ return cloud;
+ };
+
+ return d3.rebind(cloud, event, "on");
+ }
+
+ function cloudText(d) {
+ return d.text;
+ }
+
+ function cloudFont() {
+ return "serif";
+ }
+
+ function cloudFontSize(d) {
+ return Math.sqrt(d.value);
+ }
+
+ function cloudRotate() {
+ return (~~(Math.random() * 6) - 3) * 30;
+ }
+
+ function cloudPadding() {
+ return 1;
+ }
+
+ // Fetches a monochrome sprite bitmap for the specified text.
+ // Load in batches for speed.
+ function cloudSprite(d, data, di) {
+ if (d.sprite) return;
+ c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
+ var x = 0,
+ y = 0,
+ maxh = 0,
+ n = data.length;
+ di--;
+ while (++di < n) {
+ d = data[di];
+ c.save();
+ c.font = ~~((d.size + 1) / ratio) + "px " + d.font;
+ var w = c.measureText(d.text + "m").width * ratio,
+ h = d.size << 1;
+ if (d.rotate) {
+ var sr = Math.sin(d.rotate * cloudRadians),
+ cr = Math.cos(d.rotate * cloudRadians),
+ wcr = w * cr,
+ wsr = w * sr,
+ hcr = h * cr,
+ hsr = h * sr;
+ w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
+ h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
+ } else {
+ w = (w + 0x1f) >> 5 << 5;
+ }
+ if (h > maxh) maxh = h;
+ if (x + w >= (cw << 5)) {
+ x = 0;
+ y += maxh;
+ maxh = 0;
+ }
+ if (y + h >= ch) break;
+ c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
+ if (d.rotate) c.rotate(d.rotate * cloudRadians);
+ c.fillText(d.text, 0, 0);
+ c.restore();
+ d.width = w;
+ d.height = h;
+ d.xoff = x;
+ d.yoff = y;
+ d.x1 = w >> 1;
+ d.y1 = h >> 1;
+ d.x0 = -d.x1;
+ d.y0 = -d.y1;
+ x += w;
+ }
+ var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
+ sprite = [];
+ while (--di >= 0) {
+ d = data[di];
+ var w = d.width,
+ w32 = w >> 5,
+ h = d.y1 - d.y0,
+ p = d.padding;
+ // Zero the buffer
+ for (var i = 0; i < h * w32; i++) sprite[i] = 0;
+ x = d.xoff;
+ if (x == null) return;
+ y = d.yoff;
+ var seen = 0,
+ seenRow = -1;
+ for (var j = 0; j < h; j++) {
+ for (var i = 0; i < w; i++) {
+ var k = w32 * j + (i >> 5),
+ m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
+ if (p) {
+ if (j) sprite[k - w32] |= m;
+ if (j < w - 1) sprite[k + w32] |= m;
+ m |= (m << 1) | (m >> 1);
+ }
+ sprite[k] |= m;
+ seen |= m;
+ }
+ if (seen) seenRow = j;
+ else {
+ d.y0++;
+ h--;
+ j--;
+ y++;
+ }
+ }
+ d.y1 = d.y0 + seenRow;
+ d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
+ }
+ }
+
+ // Use mask-based collision detection.
+ function cloudCollide(tag, board, sw) {
+ sw >>= 5;
+ var sprite = tag.sprite,
+ w = tag.width >> 5,
+ lx = tag.x - (w << 4),
+ sx = lx & 0x7f,
+ msx = 32 - sx,
+ h = tag.y1 - tag.y0,
+ x = (tag.y + tag.y0) * sw + (lx >> 5),
+ last;
+ for (var j = 0; j < h; j++) {
+ last = 0;
+ for (var i = 0; i <= w; i++) {
+ if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
+ & board[x + i]) return true;
+ }
+ x += sw;
+ }
+ return false;
+ }
+
+ function cloudBounds(bounds, d) {
+ var b0 = bounds[0],
+ b1 = bounds[1];
+ if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
+ if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
+ if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
+ if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
+ }
+
+ function collideRects(a, b) {
+ return a.x + a.x1 > b[0].x && a.x + a.x0 < b[1].x && a.y + a.y1 > b[0].y && a.y + a.y0 < b[1].y;
+ }
+
+ function archimedeanSpiral(size) {
+ var e = size[0] / size[1];
+ return function(t) {
+ return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
+ };
+ }
+
+ function rectangularSpiral(size) {
+ var dy = 4,
+ dx = dy * size[0] / size[1],
+ x = 0,
+ y = 0;
+ return function(t) {
+ var sign = t < 0 ? -1 : 1;
+ // See triangular numbers: T_n = n * (n + 1) / 2.
+ switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
+ case 0: x += dx; break;
+ case 1: y += dy; break;
+ case 2: x -= dx; break;
+ default: y -= dy; break;
+ }
+ return [x, y];
+ };
+ }
+
+ // TODO reuse arrays?
+ function zeroArray(n) {
+ var a = [],
+ i = -1;
+ while (++i < n) a[i] = 0;
+ return a;
+ }
+
+ var cloudRadians = Math.PI / 180,
+ cw = 1 << 11 >> 5,
+ ch = 1 << 11,
+ canvas,
+ ratio = 1;
+
+ if (typeof document !== "undefined") {
+ canvas = document.createElement("canvas");
+ canvas.width = 1;
+ canvas.height = 1;
+ ratio = Math.sqrt(canvas.getContext("2d").getImageData(0, 0, 1, 1).data.length >> 2);
+ canvas.width = (cw << 5) / ratio;
+ canvas.height = ch / ratio;
+ } else {
+ // node-canvas support
+ var Canvas = require("canvas");
+ canvas = new Canvas(cw << 5, ch);
+ }
+
+ var c = canvas.getContext("2d"),
+ spirals = {
+ archimedean: archimedeanSpiral,
+ rectangular: rectangularSpiral
+ };
+ c.fillStyle = "red";
+ c.textAlign = "center";
+
+ exports.cloud = cloud;
+})(typeof exports === "undefined" ? d3.layout || (d3.layout = {}) : exports);
86 static/main.js
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@@ -0,0 +1,86 @@
+var biggestNum = 0;
+var WIDTH = window.innerWidth;
+var HEIGHT = window.innerHeight;
+var global = {};
+var countries = {};
+
+function extractWords(map) {
+ var i;
+ var entry;
+ var words = [];
+
+ for (key in map) {
+ if (map.hasOwnProperty(key)) {
+ entry = map[key];
+ words.push({
+ text: key,
+ size: map[key]
+ });
+ }
+ }
+
+ return words;
+}
+
+function loadData(json) {
+ for (i = 0; i < json.length; i += 1) {
+ var entry = json[i];
+ global[entry.q] = (global[entry.q] || 0) + 1;
+
+ if (global[entry.q] > biggestNum) {
+ biggestNum = global[entry.q];
+ }
+
+ if (!countries.hasOwnProperty(entry.country)) {
+ countries[entry.country] = {};
+ }
+
+ countries[entry.country] = (countries[entry.country][entry.q] || 0) + 1;
+ }
+}
+
+function loadCloud(json) {
+ loadData(json);
+ var words = extractWords(global);
+ d3.layout.cloud().size([WIDTH, HEIGHT])
+ .words(words)
+ .rotate(function(d) { return ~~(Math.random() * 5) * 30 - 60; })
+ .fontSize(function(d) {
+ var size = d.size * (d.size/biggestNum) * 14;
+ if (size < 7) {
+ size = 7;
+ }
+ return size;
+ })
+ .on("end", draw)
+ .start();
+}
+
+function draw(words) {
+ d3.select("body").append("svg")
+ .attr("width", WIDTH)
+ .attr("height", HEIGHT)
+ .append("g")
+ .attr("transform", "translate(" + WIDTH/2 + " , " + HEIGHT/2 + ")")
+ .selectAll("text")
+ .data(words)
+ .enter().append("text")
+ .style("font-size", function(d) { return d.size + "px"; })
+ .attr("text-anchor", "middle")
+ .attr("transform", function(d) {
+ return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";
+ })
+ .text(function(d) { return d.text; });
+}
+
+var xhr = new XMLHttpRequest();
+var url = '/entries';
+
+xhr.open('GET', url, true);
+xhr.onreadystatechange = function() {
+ if (xhr.readyState == 4 && xhr.status == 200 || xhr.status == 304) {
+ var json = JSON.parse(xhr.responseText);
+ loadCloud(json);
+ }
+};
+xhr.send();
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