--- /dev/null
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+
--- /dev/null
+Moute is a demontration of a mapping/navigitation front-end in HTML.
+Author: Michael Leibowitz <michael.leibowitz@intel.com>
+
+* License/Legal
+ This application is written using HTML5/css3/jquery javascript library and is
+ distributed under Apache2.0 license.
+
+ Moute uses data from OpenStreetmap, which is licensed under the CC
+ BY-SA License.
+
+** Subcomponents
+*** jQuery 1.8.0
+ - Copyright 2012 jQuery Foundation and other contributors
+ - Released under the MIT license
+ - http://jquery.org/license
+*** Polymaps
+ - Copyright (c) 2010, SimpleGeo and Stamen Design
+ - Released under 3-Clause BSD type License
+ - http://polymaps.org
+
--- /dev/null
+/*
+ * Copyright (c) 2012, Intel Corporation.
+ *
+ * This program is licensed under the terms and conditions of the
+ * Apache License, version 2.0. The full text of the Apache License is at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ */
+
+html, body {
+ height: 100%;
+}
+
+.hidden {
+ visibility: hidden;
+}
+
+#map {
+ height: 95%;
+}
+
+#state_lable {
+ color: #FFFFFF;
+ text-align: center
+}
+
+header {
+ background: #000000;
+ height: 5%;
+}
+
+#searchbar {
+ width: 100%;
+}
+
+input[type=text] {
+ width: 70%;
+}
+
+input[type=button] {
+ width: 15%;
+}
+
+
+footer {
+ background: #802828;
+ display:-webkit-box;
+ height: 10%;
+ -webkit-box-orient:horizontal;
+ -webkit-box-pack:center;
+ -webkit-box-align:center;
+}
+
+body {
+ margin: 0;
+ background: #E5E0D9;
+}
+
+svg {
+ display: block;
+ overflow: hidden;
+ width: 100%;
+ height: 100%;
+}
+
+#copy {
+ position: absolute;
+ left: 0;
+ bottom: 4px;
+ padding-left: 5px;
+ font: 9px sans-serif;
+ color: #fff;
+ cursor: default;
+}
+
+#copy a {
+ color: #fff;
+}
+
+.compass .back {
+ fill: #eee;
+ fill-opacity: .8;
+}
+
+.compass .fore {
+ stroke: #999;
+ stroke-width: 1.5px;
+}
+
+.compass rect.back.fore {
+ fill: #999;
+ fill-opacity: .3;
+ stroke: #eee;
+ stroke-width: 1px;
+ shape-rendering: crispEdges;
+}
+
+.compass .direction {
+ fill: none;
+}
+
+.compass .chevron {
+ fill: none;
+ stroke: #999;
+ stroke-width: 5px;
+}
+
+.compass .zoom .chevron {
+ stroke-width: 4px;
+}
+
+.compass .active .chevron, .compass .chevron.active {
+ stroke: #fff;
+}
+
+.compass.active .active .direction {
+ fill: #999;
+}
--- /dev/null
+<!DOCTYPE html>
+<!--
+ * Copyright (c) 2012, Intel Corporation.
+ *
+ * This program is licensed under the terms and conditions of the
+ * Apache License, version 2.0. The full text of the Apache License is at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+-->
+<html>
+ <head>
+ <title>Moute</title>
+ <script type="text/javascript" src="js/polymaps.js"></script>
+ <script type="text/javascript" src="js/jquery-1.8.0.min.js"></script>
+ <script type="text/javascript" src="js/moute.js"></script>
+ <link rel="stylesheet" type="text/css" href="css/moute.css" />
+ </head>
+ <body>
+ <header>
+ <div id="topbar"></div>
+ <div id="searchbar">
+ <form>
+ <input type="text" name="search_input" value=""/>
+ <input type="button" name="search_button" value="Search"/>
+ </form>
+ </div>
+ </header>
+ <div id="map"></div>
+ <footer>
+ <p id="state_lable">Not Navigating</p>
+
+ <div id="time">
+ <span>time:</span><span id="current_time">CURRENT TIME</span>
+ </div>
+
+ <div id="arrival_time">
+ <p id="arrival_lable">Arrival</p>
+ <p id="arrival_time">ARRIVAL TIME</p>
+ </div>
+
+ </footer>
+ </body>
+</html>
--- /dev/null
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p.access(this,function(c,d,e){var f;return p.isWindow(c)?c.document.documentElement["client"+a]:c.nodeType===9?(f=c.documentElement,Math.max(c.body["scroll"+a],f["scroll"+a],c.body["offset"+a],f["offset"+a],f["client"+a])):e===b?p.css(c,d,e,h):p.style(c,d,e,h)},c,g?e:b,g)}})}),a.jQuery=a.$=p,typeof define=="function"&&define.amd&&define.amd.jQuery&&define("jquery",[],function(){return p})})(window);
\ No newline at end of file
--- /dev/null
+/*
+ * Copyright (c) 2012, Intel Corporation.
+ *
+ * This program is licensed under the terms and conditions of the
+ * Apache License, version 2.0. The full text of the Apache License is at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ */
+
+stateEnum = {
+ NOT_NAVIGATING : 0,
+ NAVIGATING : 1,
+ ARRIVED: 2
+};
+
+state = stateEnum.NOT_NAVIGATING;
+
+
+function Searcher()
+{
+ this.extents_to_viewbox = function() {
+ var extents = map.extent();
+ return extents[0].lon //left
+ + "," + extents[1].lat //top
+ + "," + extents[1].lon //right
+ + "," + extents[0].lat //bottom
+ ;
+ };
+
+ this.search = function(searchphrase) {
+ $.ajax({
+ url: 'http://nominatim.openstreetmap.org/search',
+ type: 'GET',
+ dataType: 'jsonp',
+ jsonp: false,
+ jsonpCallback: 'json_callback' + escape(searchphrase),
+ data: {
+ format: 'json',
+ bounded: 1,
+ viewbox: this.extents_to_viewbox(),
+ json_callback: 'json_callback' + searchphrase,
+ q: searchphrase
+ },
+ success: function(data, textStatus, xhr) {
+ geojson = data.map(function(o) {
+ return {
+ type : "Feature",
+ geometry: {
+ type : "Point",
+ coordinates : [
+ Number(o.lon),
+ Number(o.lat)
+ ]},
+ properties: {
+ icon : o.icon
+ }
+ };
+ });
+ geojson_layer.features(geojson);
+ }
+ });
+ };
+}
+
+jQuery(document).ready(function() {
+ //set up the footer
+ //FIXME: do this on resize and do something smarter
+ var height = $("body").height();
+ var width = $("body").width();
+
+ console.log("display ratio: " + width / height);
+
+ var footer_height = height * 0.10;
+ // $("footer").height(footer_height);
+ // $("#map").height(height - footer_height);
+
+ console.log("screen height: " + height);
+ console.log("footer height: " + footer_height);
+
+ // set up the map
+ var po = org.polymaps;
+ geojson = [];
+ map = po.map()
+ .container(document.getElementById("map").appendChild(po.svg("svg")))
+ .add(po.interact());
+
+ map.add(po.image()
+ .url(po.url("http://{S}tile.openstreetmap.org/{Z}/{X}/{Y}.png")
+ .hosts(["a.", "b.", "c.", ""])));
+ map.add(po.compass()
+ .pan("none"));
+ geojson_layer = po.geoJson();
+ geojson_layer.features(geojson);
+ geojson_layer.on("show", po.stylist());
+ map.add(geojson_layer);
+
+ // set up the labels
+ $("#state_lable").hide();
+ time = $("#time").hide().detach();
+ arrival_time = $("#arrival_time").hide().detach();
+
+ s = new Searcher();
+ $(":button").on("click", function(e) {
+ var searchtext = $("input[type='text']").val();
+ if (searchtext) {
+ s.search(searchtext);
+ }
+ } );
+
+});
--- /dev/null
+if (!org) var org = {};
+if (!org.polymaps) org.polymaps = {};
+(function(po){
+
+ po.version = "2.5.0"; // semver.org
+
+ var zero = {x: 0, y: 0};
+po.ns = {
+ svg: "http://www.w3.org/2000/svg",
+ xlink: "http://www.w3.org/1999/xlink"
+};
+
+function ns(name) {
+ var i = name.indexOf(":");
+ return i < 0 ? name : {
+ space: po.ns[name.substring(0, i)],
+ local: name.substring(i + 1)
+ };
+}
+po.id = (function() {
+ var id = 0;
+ return function() {
+ return ++id;
+ };
+})();
+po.svg = function(type) {
+ return document.createElementNS(po.ns.svg, type);
+};
+po.transform = function(a, b, c, d, e, f) {
+ var transform = {},
+ zoomDelta,
+ zoomFraction,
+ k;
+
+ if (!arguments.length) {
+ a = 1; c = 0; e = 0;
+ b = 0; d = 1; f = 0;
+ }
+
+ transform.zoomFraction = function(x) {
+ if (!arguments.length) return zoomFraction;
+ zoomFraction = x;
+ zoomDelta = Math.floor(zoomFraction + Math.log(Math.sqrt(a * a + b * b + c * c + d * d)) / Math.LN2);
+ k = Math.pow(2, -zoomDelta);
+ return transform;
+ };
+
+ transform.apply = function(x) {
+ var k0 = Math.pow(2, -x.zoom),
+ k1 = Math.pow(2, x.zoom - zoomDelta);
+ return {
+ column: (a * x.column * k0 + c * x.row * k0 + e) * k1,
+ row: (b * x.column * k0 + d * x.row * k0 + f) * k1,
+ zoom: x.zoom - zoomDelta
+ };
+ };
+
+ transform.unapply = function(x) {
+ var k0 = Math.pow(2, -x.zoom),
+ k1 = Math.pow(2, x.zoom + zoomDelta);
+ return {
+ column: (x.column * k0 * d - x.row * k0 * c - e * d + f * c) / (a * d - b * c) * k1,
+ row: (x.column * k0 * b - x.row * k0 * a - e * b + f * a) / (c * b - d * a) * k1,
+ zoom: x.zoom + zoomDelta
+ };
+ };
+
+ transform.toString = function() {
+ return "matrix(" + [a * k, b * k, c * k, d * k].join(" ") + " 0 0)";
+ };
+
+ return transform.zoomFraction(0);
+};
+po.cache = function(load, unload) {
+ var cache = {},
+ locks = {},
+ map = {},
+ head = null,
+ tail = null,
+ size = 64,
+ n = 0;
+
+ function remove(tile) {
+ n--;
+ if (unload) unload(tile);
+ delete map[tile.key];
+ if (tile.next) tile.next.prev = tile.prev;
+ else if (tail = tile.prev) tail.next = null;
+ if (tile.prev) tile.prev.next = tile.next;
+ else if (head = tile.next) head.prev = null;
+ }
+
+ function flush() {
+ for (var tile = tail; n > size; tile = tile.prev) {
+ if (!tile) break;
+ if (tile.lock) continue;
+ remove(tile);
+ }
+ }
+
+ cache.peek = function(c) {
+ return map[[c.zoom, c.column, c.row].join("/")];
+ };
+
+ cache.load = function(c, projection) {
+ var key = [c.zoom, c.column, c.row].join("/"),
+ tile = map[key];
+ if (tile) {
+ if (tile.prev) {
+ tile.prev.next = tile.next;
+ if (tile.next) tile.next.prev = tile.prev;
+ else tail = tile.prev;
+ tile.prev = null;
+ tile.next = head;
+ head.prev = tile;
+ head = tile;
+ }
+ tile.lock = 1;
+ locks[key] = tile;
+ return tile;
+ }
+ tile = {
+ key: key,
+ column: c.column,
+ row: c.row,
+ zoom: c.zoom,
+ next: head,
+ prev: null,
+ lock: 1
+ };
+ load.call(null, tile, projection);
+ locks[key] = map[key] = tile;
+ if (head) head.prev = tile;
+ else tail = tile;
+ head = tile;
+ n++;
+ return tile;
+ };
+
+ cache.unload = function(key) {
+ if (!(key in locks)) return false;
+ var tile = locks[key];
+ tile.lock = 0;
+ delete locks[key];
+ if (tile.request && tile.request.abort(false)) remove(tile);
+ return tile;
+ };
+
+ cache.locks = function() {
+ return locks;
+ };
+
+ cache.size = function(x) {
+ if (!arguments.length) return size;
+ size = x;
+ flush();
+ return cache;
+ };
+
+ cache.flush = function() {
+ flush();
+ return cache;
+ };
+
+ cache.clear = function() {
+ for (var key in map) {
+ var tile = map[key];
+ if (tile.request) tile.request.abort(false);
+ if (unload) unload(map[key]);
+ if (tile.lock) {
+ tile.lock = 0;
+ tile.element.parentNode.removeChild(tile.element);
+ }
+ }
+ locks = {};
+ map = {};
+ head = tail = null;
+ n = 0;
+ return cache;
+ };
+
+ return cache;
+};
+po.url = function(template) {
+ var hosts = [],
+ repeat = true;
+
+ function format(c) {
+ var max = c.zoom < 0 ? 1 : 1 << c.zoom,
+ column = c.column;
+ if (repeat) {
+ column = c.column % max;
+ if (column < 0) column += max;
+ } else if ((column < 0) || (column >= max)) {
+ return null;
+ }
+ return template.replace(/{(.)}/g, function(s, v) {
+ switch (v) {
+ case "S": return hosts[(Math.abs(c.zoom) + c.row + column) % hosts.length];
+ case "Z": return c.zoom;
+ case "X": return column;
+ case "Y": return c.row;
+ case "B": {
+ var nw = po.map.coordinateLocation({row: c.row, column: column, zoom: c.zoom}),
+ se = po.map.coordinateLocation({row: c.row + 1, column: column + 1, zoom: c.zoom}),
+ pn = Math.ceil(Math.log(c.zoom) / Math.LN2);
+ return se.lat.toFixed(pn)
+ + "," + nw.lon.toFixed(pn)
+ + "," + nw.lat.toFixed(pn)
+ + "," + se.lon.toFixed(pn);
+ }
+ }
+ return v;
+ });
+ }
+
+ format.template = function(x) {
+ if (!arguments.length) return template;
+ template = x;
+ return format;
+ };
+
+ format.hosts = function(x) {
+ if (!arguments.length) return hosts;
+ hosts = x;
+ return format;
+ };
+
+ format.repeat = function(x) {
+ if (!arguments.length) return repeat;
+ repeat = x;
+ return format;
+ };
+
+ return format;
+};
+po.dispatch = function(that) {
+ var types = {};
+
+ that.on = function(type, handler) {
+ var listeners = types[type] || (types[type] = []);
+ for (var i = 0; i < listeners.length; i++) {
+ if (listeners[i].handler == handler) return that; // already registered
+ }
+ listeners.push({handler: handler, on: true});
+ return that;
+ };
+
+ that.off = function(type, handler) {
+ var listeners = types[type];
+ if (listeners) for (var i = 0; i < listeners.length; i++) {
+ var l = listeners[i];
+ if (l.handler == handler) {
+ l.on = false;
+ listeners.splice(i, 1);
+ break;
+ }
+ }
+ return that;
+ };
+
+ return function(event) {
+ var listeners = types[event.type];
+ if (!listeners) return;
+ listeners = listeners.slice(); // defensive copy
+ for (var i = 0; i < listeners.length; i++) {
+ var l = listeners[i];
+ if (l.on) l.handler.call(that, event);
+ }
+ };
+};
+po.queue = (function() {
+ var queued = [], active = 0, size = 6;
+
+ function process() {
+ if ((active >= size) || !queued.length) return;
+ active++;
+ queued.pop()();
+ }
+
+ function dequeue(send) {
+ for (var i = 0; i < queued.length; i++) {
+ if (queued[i] == send) {
+ queued.splice(i, 1);
+ return true;
+ }
+ }
+ return false;
+ }
+
+ function request(url, callback, mimeType) {
+ var req;
+
+ function send() {
+ req = new XMLHttpRequest();
+ if (mimeType) {
+ req.overrideMimeType(mimeType);
+ }
+ req.open("GET", url, true);
+ req.onreadystatechange = function(e) {
+ if (req.readyState == 4) {
+ active--;
+ if (req.status < 300) callback(req);
+ process();
+ }
+ };
+ req.send(null);
+ }
+
+ function abort(hard) {
+ if (dequeue(send)) return true;
+ if (hard && req) { req.abort(); return true; }
+ return false;
+ }
+
+ queued.push(send);
+ process();
+ return {abort: abort};
+ }
+
+ function text(url, callback, mimeType) {
+ return request(url, function(req) {
+ if (req.responseText) callback(req.responseText);
+ }, mimeType);
+ }
+
+ /*
+ * We the override MIME type here so that you can load local files; some
+ * browsers don't assign a proper MIME type for local files.
+ */
+
+ function json(url, callback) {
+ return request(url, function(req) {
+ if (req.responseText) callback(JSON.parse(req.responseText));
+ }, "application/json");
+ }
+
+ function xml(url, callback) {
+ return request(url, function(req) {
+ if (req.responseXML) callback(req.responseXML);
+ }, "application/xml");
+ }
+
+ function image(image, src, callback) {
+ var img;
+
+ function send() {
+ img = document.createElement("img");
+ img.onerror = function() {
+ active--;
+ process();
+ };
+ img.onload = function() {
+ active--;
+ callback(img);
+ process();
+ };
+ img.src = src;
+ image.setAttributeNS(po.ns.xlink, "href", src);
+ }
+
+ function abort(hard) {
+ if (dequeue(send)) return true;
+ if (hard && img) { img.src = "about:"; return true; } // cancels request
+ return false;
+ }
+
+ queued.push(send);
+ process();
+ return {abort: abort};
+ }
+
+ return {text: text, xml: xml, json: json, image: image};
+})();
+po.map = function() {
+ var map = {},
+ container,
+ size,
+ sizeActual = zero,
+ sizeRadius = zero, // sizeActual / 2
+ tileSize = {x: 256, y: 256},
+ center = {lat: 37.76487, lon: -122.41948},
+ zoom = 12,
+ zoomFraction = 0,
+ zoomFactor = 1, // Math.pow(2, zoomFraction)
+ zoomRange = [1, 18],
+ angle = 0,
+ angleCos = 1, // Math.cos(angle)
+ angleSin = 0, // Math.sin(angle)
+ angleCosi = 1, // Math.cos(-angle)
+ angleSini = 0, // Math.sin(-angle)
+ ymin = -180, // lat2y(centerRange[0].lat)
+ ymax = 180; // lat2y(centerRange[1].lat)
+
+ var centerRange = [
+ {lat: y2lat(ymin), lon: -Infinity},
+ {lat: y2lat(ymax), lon: Infinity}
+ ];
+
+ map.locationCoordinate = function(l) {
+ var c = po.map.locationCoordinate(l),
+ k = Math.pow(2, zoom);
+ c.column *= k;
+ c.row *= k;
+ c.zoom += zoom;
+ return c;
+ };
+
+ map.coordinateLocation = po.map.coordinateLocation;
+
+ map.coordinatePoint = function(tileCenter, c) {
+ var kc = Math.pow(2, zoom - c.zoom),
+ kt = Math.pow(2, zoom - tileCenter.zoom),
+ dx = (c.column * kc - tileCenter.column * kt) * tileSize.x * zoomFactor,
+ dy = (c.row * kc - tileCenter.row * kt) * tileSize.y * zoomFactor;
+ return {
+ x: sizeRadius.x + angleCos * dx - angleSin * dy,
+ y: sizeRadius.y + angleSin * dx + angleCos * dy
+ };
+ };
+
+ map.pointCoordinate = function(tileCenter, p) {
+ var kt = Math.pow(2, zoom - tileCenter.zoom),
+ dx = (p.x - sizeRadius.x) / zoomFactor,
+ dy = (p.y - sizeRadius.y) / zoomFactor;
+ return {
+ column: tileCenter.column * kt + (angleCosi * dx - angleSini * dy) / tileSize.x,
+ row: tileCenter.row * kt + (angleSini * dx + angleCosi * dy) / tileSize.y,
+ zoom: zoom
+ };
+ };
+
+ map.locationPoint = function(l) {
+ var k = Math.pow(2, zoom + zoomFraction - 3) / 45,
+ dx = (l.lon - center.lon) * k * tileSize.x,
+ dy = (lat2y(center.lat) - lat2y(l.lat)) * k * tileSize.y;
+ return {
+ x: sizeRadius.x + angleCos * dx - angleSin * dy,
+ y: sizeRadius.y + angleSin * dx + angleCos * dy
+ };
+ };
+
+ map.pointLocation = function(p) {
+ var k = 45 / Math.pow(2, zoom + zoomFraction - 3),
+ dx = (p.x - sizeRadius.x) * k,
+ dy = (p.y - sizeRadius.y) * k;
+ return {
+ lon: center.lon + (angleCosi * dx - angleSini * dy) / tileSize.x,
+ lat: y2lat(lat2y(center.lat) - (angleSini * dx + angleCosi * dy) / tileSize.y)
+ };
+ };
+
+ function rezoom() {
+ if (zoomRange) {
+ if (zoom < zoomRange[0]) zoom = zoomRange[0];
+ else if (zoom > zoomRange[1]) zoom = zoomRange[1];
+ }
+ zoomFraction = zoom - (zoom = Math.round(zoom));
+ zoomFactor = Math.pow(2, zoomFraction);
+ }
+
+ function recenter() {
+ if (!centerRange) return;
+ var k = 45 / Math.pow(2, zoom + zoomFraction - 3);
+
+ // constrain latitude
+ var y = Math.max(Math.abs(angleSin * sizeRadius.x + angleCos * sizeRadius.y),
+ Math.abs(angleSini * sizeRadius.x + angleCosi * sizeRadius.y)),
+ lat0 = y2lat(ymin - y * k / tileSize.y),
+ lat1 = y2lat(ymax + y * k / tileSize.y);
+ center.lat = Math.max(lat0, Math.min(lat1, center.lat));
+
+ // constrain longitude
+ var x = Math.max(Math.abs(angleSin * sizeRadius.y + angleCos * sizeRadius.x),
+ Math.abs(angleSini * sizeRadius.y + angleCosi * sizeRadius.x)),
+ lon0 = centerRange[0].lon - x * k / tileSize.x,
+ lon1 = centerRange[1].lon + x * k / tileSize.x;
+ center.lon = Math.max(lon0, Math.min(lon1, center.lon));
+ }
+
+ // a place to capture mouse events if no tiles exist
+ var rect = po.svg("rect");
+ rect.setAttribute("visibility", "hidden");
+ rect.setAttribute("pointer-events", "all");
+
+ map.container = function(x) {
+ if (!arguments.length) return container;
+ container = x;
+ container.setAttribute("class", "map");
+ container.appendChild(rect);
+ return map.resize(); // infer size
+ };
+
+ map.focusableParent = function() {
+ for (var p = container; p; p = p.parentNode) {
+ if (p.tabIndex >= 0) return p;
+ }
+ return window;
+ };
+
+ map.mouse = function(e) {
+ var point = (container.ownerSVGElement || container).createSVGPoint();
+ if ((bug44083 < 0) && (window.scrollX || window.scrollY)) {
+ var svg = document.body.appendChild(po.svg("svg"));
+ svg.style.position = "absolute";
+ svg.style.top = svg.style.left = "0px";
+ var ctm = svg.getScreenCTM();
+ bug44083 = !(ctm.f || ctm.e);
+ document.body.removeChild(svg);
+ }
+ if (bug44083) {
+ point.x = e.pageX;
+ point.y = e.pageY;
+ } else {
+ point.x = e.clientX;
+ point.y = e.clientY;
+ }
+ return point.matrixTransform(container.getScreenCTM().inverse());
+ };
+
+ map.size = function(x) {
+ if (!arguments.length) return sizeActual;
+ size = x;
+ return map.resize(); // size tiles
+ };
+
+ map.resize = function() {
+ if (!size) {
+ rect.setAttribute("width", "100%");
+ rect.setAttribute("height", "100%");
+ b = rect.getBBox();
+ sizeActual = {x: b.width, y: b.height};
+ resizer.add(map);
+ } else {
+ sizeActual = size;
+ resizer.remove(map);
+ }
+ rect.setAttribute("width", sizeActual.x);
+ rect.setAttribute("height", sizeActual.y);
+ sizeRadius = {x: sizeActual.x / 2, y: sizeActual.y / 2};
+ recenter();
+ map.dispatch({type: "resize"});
+ return map;
+ };
+
+ map.tileSize = function(x) {
+ if (!arguments.length) return tileSize;
+ tileSize = x;
+ map.dispatch({type: "move"});
+ return map;
+ };
+
+ map.center = function(x) {
+ if (!arguments.length) return center;
+ center = x;
+ recenter();
+ map.dispatch({type: "move"});
+ return map;
+ };
+
+ map.panBy = function(x) {
+ var k = 45 / Math.pow(2, zoom + zoomFraction - 3),
+ dx = x.x * k,
+ dy = x.y * k;
+ return map.center({
+ lon: center.lon + (angleSini * dy - angleCosi * dx) / tileSize.x,
+ lat: y2lat(lat2y(center.lat) + (angleSini * dx + angleCosi * dy) / tileSize.y)
+ });
+ };
+
+ map.centerRange = function(x) {
+ if (!arguments.length) return centerRange;
+ centerRange = x;
+ if (centerRange) {
+ ymin = centerRange[0].lat > -90 ? lat2y(centerRange[0].lat) : -Infinity;
+ ymax = centerRange[0].lat < 90 ? lat2y(centerRange[1].lat) : Infinity;
+ } else {
+ ymin = -Infinity;
+ ymax = Infinity;
+ }
+ recenter();
+ map.dispatch({type: "move"});
+ return map;
+ };
+
+ map.zoom = function(x) {
+ if (!arguments.length) return zoom + zoomFraction;
+ zoom = x;
+ rezoom();
+ return map.center(center);
+ };
+
+ map.zoomBy = function(z, x0, l) {
+ if (arguments.length < 2) return map.zoom(zoom + zoomFraction + z);
+
+ // compute the location of x0
+ if (arguments.length < 3) l = map.pointLocation(x0);
+
+ // update the zoom level
+ zoom = zoom + zoomFraction + z;
+ rezoom();
+
+ // compute the new point of the location
+ var x1 = map.locationPoint(l);
+
+ return map.panBy({x: x0.x - x1.x, y: x0.y - x1.y});
+ };
+
+ map.zoomRange = function(x) {
+ if (!arguments.length) return zoomRange;
+ zoomRange = x;
+ return map.zoom(zoom + zoomFraction);
+ };
+
+ map.extent = function(x) {
+ if (!arguments.length) return [
+ map.pointLocation({x: 0, y: sizeActual.y}),
+ map.pointLocation({x: sizeActual.x, y: 0})
+ ];
+
+ // compute the extent in points, scale factor, and center
+ var bl = map.locationPoint(x[0]),
+ tr = map.locationPoint(x[1]),
+ k = Math.max((tr.x - bl.x) / sizeActual.x, (bl.y - tr.y) / sizeActual.y),
+ l = map.pointLocation({x: (bl.x + tr.x) / 2, y: (bl.y + tr.y) / 2});
+
+ // update the zoom level
+ zoom = zoom + zoomFraction - Math.log(k) / Math.LN2;
+ rezoom();
+
+ // set the new center
+ return map.center(l);
+ };
+
+ map.angle = function(x) {
+ if (!arguments.length) return angle;
+ angle = x;
+ angleCos = Math.cos(angle);
+ angleSin = Math.sin(angle);
+ angleCosi = Math.cos(-angle);
+ angleSini = Math.sin(-angle);
+ recenter();
+ map.dispatch({type: "move"});
+ return map;
+ };
+
+ map.add = function(x) {
+ x.map(map);
+ return map;
+ };
+
+ map.remove = function(x) {
+ x.map(null);
+ return map;
+ };
+
+ map.dispatch = po.dispatch(map);
+
+ return map;
+};
+
+function resizer(e) {
+ for (var i = 0; i < resizer.maps.length; i++) {
+ resizer.maps[i].resize();
+ }
+}
+
+resizer.maps = [];
+
+resizer.add = function(map) {
+ for (var i = 0; i < resizer.maps.length; i++) {
+ if (resizer.maps[i] == map) return;
+ }
+ resizer.maps.push(map);
+};
+
+resizer.remove = function(map) {
+ for (var i = 0; i < resizer.maps.length; i++) {
+ if (resizer.maps[i] == map) {
+ resizer.maps.splice(i, 1);
+ return;
+ }
+ }
+};
+
+// Note: assumes single window (no frames, iframes, etc.)!
+window.addEventListener("resize", resizer, false);
+window.addEventListener("load", resizer, false);
+
+// See http://wiki.openstreetmap.org/wiki/Mercator
+
+function y2lat(y) {
+ return 360 / Math.PI * Math.atan(Math.exp(y * Math.PI / 180)) - 90;
+}
+
+function lat2y(lat) {
+ return 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
+}
+
+po.map.locationCoordinate = function(l) {
+ var k = 1 / 360;
+ return {
+ column: (l.lon + 180) * k,
+ row: (180 - lat2y(l.lat)) * k,
+ zoom: 0
+ };
+};
+
+po.map.coordinateLocation = function(c) {
+ var k = 45 / Math.pow(2, c.zoom - 3);
+ return {
+ lon: k * c.column - 180,
+ lat: y2lat(180 - k * c.row)
+ };
+};
+
+// https://bugs.webkit.org/show_bug.cgi?id=44083
+var bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0;
+po.layer = function(load, unload) {
+ var layer = {},
+ cache = layer.cache = po.cache(load, unload).size(512),
+ tile = true,
+ visible = true,
+ zoom,
+ id,
+ map,
+ container = po.svg("g"),
+ transform,
+ levelZoom,
+ levels = {};
+
+ container.setAttribute("class", "layer");
+ for (var i = -4; i <= -1; i++) levels[i] = container.appendChild(po.svg("g"));
+ for (var i = 2; i >= 1; i--) levels[i] = container.appendChild(po.svg("g"));
+ levels[0] = container.appendChild(po.svg("g"));
+
+ function zoomIn(z) {
+ var end = levels[0].nextSibling;
+ for (; levelZoom < z; levelZoom++) {
+ // -4, -3, -2, -1, +2, +1, =0 // current order
+ // -3, -2, -1, +2, +1, =0, -4 // insertBefore(-4, end)
+ // -3, -2, -1, +1, =0, -4, +2 // insertBefore(+2, end)
+ // -3, -2, -1, =0, -4, +2, +1 // insertBefore(+1, end)
+ // -4, -3, -2, -1, +2, +1, =0 // relabel
+ container.insertBefore(levels[-4], end);
+ container.insertBefore(levels[2], end);
+ container.insertBefore(levels[1], end);
+ var t = levels[-4];
+ for (var dz = -4; dz < 2;) levels[dz] = levels[++dz];
+ levels[dz] = t;
+ }
+ }
+
+ function zoomOut(z) {
+ var end = levels[0].nextSibling;
+ for (; levelZoom > z; levelZoom--) {
+ // -4, -3, -2, -1, +2, +1, =0 // current order
+ // -4, -3, -2, +2, +1, =0, -1 // insertBefore(-1, end)
+ // +2, -4, -3, -2, +1, =0, -1 // insertBefore(+2, -4)
+ // -4, -3, -2, -1, +2, +1, =0 // relabel
+ container.insertBefore(levels[-1], end);
+ container.insertBefore(levels[2], levels[-4]);
+ var t = levels[2];
+ for (var dz = 2; dz > -4;) levels[dz] = levels[--dz];
+ levels[dz] = t;
+ }
+ }
+
+ function move() {
+ var map = layer.map(), // in case the layer is removed
+ mapZoom = map.zoom(),
+ mapZoomFraction = mapZoom - (mapZoom = Math.round(mapZoom)),
+ mapSize = map.size(),
+ mapAngle = map.angle(),
+ tileSize = map.tileSize(),
+ tileCenter = map.locationCoordinate(map.center());
+
+ // set the layer zoom levels
+ if (levelZoom != mapZoom) {
+ if (levelZoom < mapZoom) zoomIn(mapZoom);
+ else if (levelZoom > mapZoom) zoomOut(mapZoom);
+ else levelZoom = mapZoom;
+ for (var z = -4; z <= 2; z++) {
+ var l = levels[z];
+ l.setAttribute("class", "zoom" + (z < 0 ? "" : "+") + z + " zoom" + (mapZoom + z));
+ l.setAttribute("transform", "scale(" + Math.pow(2, -z) + ")");
+ }
+ }
+
+ // set the layer transform
+ container.setAttribute("transform",
+ "translate(" + (mapSize.x / 2) + "," + (mapSize.y / 2) + ")"
+ + (mapAngle ? "rotate(" + mapAngle / Math.PI * 180 + ")" : "")
+ + (mapZoomFraction ? "scale(" + Math.pow(2, mapZoomFraction) + ")" : "")
+ + (transform ? transform.zoomFraction(mapZoomFraction) : ""));
+
+ // get the coordinates of the four corners
+ var c0 = map.pointCoordinate(tileCenter, zero),
+ c1 = map.pointCoordinate(tileCenter, {x: mapSize.x, y: 0}),
+ c2 = map.pointCoordinate(tileCenter, mapSize),
+ c3 = map.pointCoordinate(tileCenter, {x: 0, y: mapSize.y});
+
+ // round to pixel boundary to avoid anti-aliasing artifacts
+ if (!mapZoomFraction && !mapAngle && !transform) {
+ tileCenter.column = (Math.round(tileSize.x * tileCenter.column) + (mapSize.x & 1) / 2) / tileSize.x;
+ tileCenter.row = (Math.round(tileSize.y * tileCenter.row) + (mapSize.y & 1) / 2) / tileSize.y;
+ }
+
+ // layer-specific coordinate transform
+ if (transform) {
+ c0 = transform.unapply(c0);
+ c1 = transform.unapply(c1);
+ c2 = transform.unapply(c2);
+ c3 = transform.unapply(c3);
+ tileCenter = transform.unapply(tileCenter);
+ }
+
+ // layer-specific zoom transform
+ var tileLevel = zoom ? zoom(c0.zoom) - c0.zoom : 0;
+ if (tileLevel) {
+ var k = Math.pow(2, tileLevel);
+ c0.column *= k; c0.row *= k;
+ c1.column *= k; c1.row *= k;
+ c2.column *= k; c2.row *= k;
+ c3.column *= k; c3.row *= k;
+ c0.zoom = c1.zoom = c2.zoom = c3.zoom += tileLevel;
+ }
+
+ // tile-specific projection
+ function projection(c) {
+ var zoom = c.zoom,
+ max = zoom < 0 ? 1 : 1 << zoom,
+ column = c.column % max,
+ row = c.row;
+ if (column < 0) column += max;
+ return {
+ locationPoint: function(l) {
+ var c = po.map.locationCoordinate(l),
+ k = Math.pow(2, zoom - c.zoom);
+ return {
+ x: tileSize.x * (k * c.column - column),
+ y: tileSize.y * (k * c.row - row)
+ };
+ }
+ };
+ }
+
+ // record which tiles are visible
+ var oldLocks = cache.locks(), newLocks = {};
+
+ // reset the proxy counts
+ for (var key in oldLocks) {
+ oldLocks[key].proxyCount = 0;
+ }
+
+ // load the tiles!
+ if (visible && tileLevel > -5 && tileLevel < 3) {
+ var ymax = c0.zoom < 0 ? 1 : 1 << c0.zoom;
+ if (tile) {
+ scanTriangle(c0, c1, c2, 0, ymax, scanLine);
+ scanTriangle(c2, c3, c0, 0, ymax, scanLine);
+ } else {
+ var x = Math.floor((c0.column + c2.column) / 2),
+ y = Math.max(0, Math.min(ymax - 1, Math.floor((c1.row + c3.row) / 2))),
+ z = Math.min(4, c0.zoom);
+ x = x >> z << z;
+ y = y >> z << z;
+ scanLine(x, x + 1, y);
+ }
+ }
+
+ // scan-line conversion
+ function scanLine(x0, x1, y) {
+ var z = c0.zoom,
+ z0 = 2 - tileLevel,
+ z1 = 4 + tileLevel;
+
+ for (var x = x0; x < x1; x++) {
+ var t = cache.load({column: x, row: y, zoom: z}, projection);
+ if (!t.ready && !(t.key in newLocks)) {
+ t.proxyRefs = {};
+ var c, full, proxy;
+
+ // downsample high-resolution tiles
+ for (var dz = 1; dz <= z0; dz++) {
+ full = true;
+ for (var dy = 0, k = 1 << dz; dy <= k; dy++) {
+ for (var dx = 0; dx <= k; dx++) {
+ proxy = cache.peek(c = {
+ column: (x << dz) + dx,
+ row: (y << dz) + dy,
+ zoom: z + dz
+ });
+ if (proxy && proxy.ready) {
+ newLocks[proxy.key] = cache.load(c);
+ proxy.proxyCount++;
+ t.proxyRefs[proxy.key] = proxy;
+ } else {
+ full = false;
+ }
+ }
+ }
+ if (full) break;
+ }
+
+ // upsample low-resolution tiles
+ if (!full) {
+ for (var dz = 1; dz <= z1; dz++) {
+ proxy = cache.peek(c = {
+ column: x >> dz,
+ row: y >> dz,
+ zoom: z - dz
+ });
+ if (proxy && proxy.ready) {
+ newLocks[proxy.key] = cache.load(c);
+ proxy.proxyCount++;
+ t.proxyRefs[proxy.key] = proxy;
+ break;
+ }
+ }
+ }
+ }
+ newLocks[t.key] = t;
+ }
+ }
+
+ // position tiles
+ for (var key in newLocks) {
+ var t = newLocks[key],
+ k = Math.pow(2, t.level = t.zoom - tileCenter.zoom);
+ t.element.setAttribute("transform", "translate("
+ + (t.x = tileSize.x * (t.column - tileCenter.column * k)) + ","
+ + (t.y = tileSize.y * (t.row - tileCenter.row * k)) + ")");
+ }
+
+ // remove tiles that are no longer visible
+ for (var key in oldLocks) {
+ if (!(key in newLocks)) {
+ var t = cache.unload(key);
+ t.element.parentNode.removeChild(t.element);
+ delete t.proxyRefs;
+ }
+ }
+
+ // append tiles that are now visible
+ for (var key in newLocks) {
+ var t = newLocks[key];
+ if (t.element.parentNode != levels[t.level]) {
+ levels[t.level].appendChild(t.element);
+ if (layer.show) layer.show(t);
+ }
+ }
+
+ // flush the cache, clearing no-longer-needed tiles
+ cache.flush();
+
+ // dispatch the move event
+ layer.dispatch({type: "move"});
+ }
+
+ // remove proxy tiles when tiles load
+ function cleanup(e) {
+ if (e.tile.proxyRefs) {
+ for (var proxyKey in e.tile.proxyRefs) {
+ var proxyTile = e.tile.proxyRefs[proxyKey];
+ if ((--proxyTile.proxyCount <= 0) && cache.unload(proxyKey)) {
+ proxyTile.element.parentNode.removeChild(proxyTile.element);
+ }
+ }
+ delete e.tile.proxyRefs;
+ }
+ }
+
+ layer.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ if (map == x) {
+ container.parentNode.appendChild(container); // move to end
+ return layer;
+ }
+ map.off("move", move).off("resize", move);
+ container.parentNode.removeChild(container);
+ }
+ map = x;
+ if (map) {
+ map.container().appendChild(container);
+ if (layer.init) layer.init(container);
+ map.on("move", move).on("resize", move);
+ move();
+ }
+ return layer;
+ };
+
+ layer.container = function() {
+ return container;
+ };
+
+ layer.levels = function() {
+ return levels;
+ };
+
+ layer.id = function(x) {
+ if (!arguments.length) return id;
+ id = x;
+ container.setAttribute("id", x);
+ return layer;
+ };
+
+ layer.visible = function(x) {
+ if (!arguments.length) return visible;
+ if (visible = x) container.removeAttribute("visibility")
+ else container.setAttribute("visibility", "hidden");
+ if (map) move();
+ return layer;
+ };
+
+ layer.transform = function(x) {
+ if (!arguments.length) return transform;
+ transform = x;
+ if (map) move();
+ return layer;
+ };
+
+ layer.zoom = function(x) {
+ if (!arguments.length) return zoom;
+ zoom = typeof x == "function" || x == null ? x : function() { return x; };
+ if (map) move();
+ return layer;
+ };
+
+ layer.tile = function(x) {
+ if (!arguments.length) return tile;
+ tile = x;
+ if (map) move();
+ return layer;
+ };
+
+ layer.reload = function() {
+ cache.clear();
+ if (map) move();
+ return layer;
+ };
+
+ layer.dispatch = po.dispatch(layer);
+ layer.on("load", cleanup);
+
+ return layer;
+};
+
+// scan-line conversion
+function edge(a, b) {
+ if (a.row > b.row) { var t = a; a = b; b = t; }
+ return {
+ x0: a.column,
+ y0: a.row,
+ x1: b.column,
+ y1: b.row,
+ dx: b.column - a.column,
+ dy: b.row - a.row
+ };
+}
+
+// scan-line conversion
+function scanSpans(e0, e1, ymin, ymax, scanLine) {
+ var y0 = Math.max(ymin, Math.floor(e1.y0)),
+ y1 = Math.min(ymax, Math.ceil(e1.y1));
+
+ // sort edges by x-coordinate
+ if ((e0.x0 == e1.x0 && e0.y0 == e1.y0)
+ ? (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1)
+ : (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
+ var t = e0; e0 = e1; e1 = t;
+ }
+
+ // scan lines!
+ var m0 = e0.dx / e0.dy,
+ m1 = e1.dx / e1.dy,
+ d0 = e0.dx > 0, // use y + 1 to compute x0
+ d1 = e1.dx < 0; // use y + 1 to compute x1
+ for (var y = y0; y < y1; y++) {
+ var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0,
+ x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
+ scanLine(Math.floor(x1), Math.ceil(x0), y);
+ }
+}
+
+// scan-line conversion
+function scanTriangle(a, b, c, ymin, ymax, scanLine) {
+ var ab = edge(a, b),
+ bc = edge(b, c),
+ ca = edge(c, a);
+
+ // sort edges by y-length
+ if (ab.dy > bc.dy) { var t = ab; ab = bc; bc = t; }
+ if (ab.dy > ca.dy) { var t = ab; ab = ca; ca = t; }
+ if (bc.dy > ca.dy) { var t = bc; bc = ca; ca = t; }
+
+ // scan span! scan span!
+ if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
+ if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
+}
+po.image = function() {
+ var image = po.layer(load, unload),
+ url;
+
+ function load(tile) {
+ var element = tile.element = po.svg("image"), size = image.map().tileSize();
+ element.setAttribute("preserveAspectRatio", "none");
+ element.setAttribute("width", size.x);
+ element.setAttribute("height", size.y);
+
+ if (typeof url == "function") {
+ element.setAttribute("opacity", 0);
+ var tileUrl = url(tile);
+ if (tileUrl != null) {
+ tile.request = po.queue.image(element, tileUrl, function(img) {
+ delete tile.request;
+ tile.ready = true;
+ tile.img = img;
+ element.removeAttribute("opacity");
+ image.dispatch({type: "load", tile: tile});
+ });
+ } else {
+ tile.ready = true;
+ image.dispatch({type: "load", tile: tile});
+ }
+ } else {
+ tile.ready = true;
+ if (url != null) element.setAttributeNS(po.ns.xlink, "href", url);
+ image.dispatch({type: "load", tile: tile});
+ }
+ }
+
+ function unload(tile) {
+ if (tile.request) tile.request.abort(true);
+ }
+
+ image.url = function(x) {
+ if (!arguments.length) return url;
+ url = typeof x == "string" && /{.}/.test(x) ? po.url(x) : x;
+ return image.reload();
+ };
+
+ return image;
+};
+po.geoJson = function(fetch) {
+ var geoJson = po.layer(load, unload),
+ container = geoJson.container(),
+ url,
+ clip = true,
+ clipId = "org.polymaps." + po.id(),
+ clipHref = "url(#" + clipId + ")",
+ clipPath = container.insertBefore(po.svg("clipPath"), container.firstChild),
+ clipRect = clipPath.appendChild(po.svg("rect")),
+ scale = "auto",
+ zoom = null,
+ features;
+
+ container.setAttribute("fill-rule", "evenodd");
+ clipPath.setAttribute("id", clipId);
+
+ if (!arguments.length) fetch = po.queue.json;
+
+ function projection(proj) {
+ var l = {lat: 0, lon: 0};
+ return function(coordinates) {
+ l.lat = coordinates[1];
+ l.lon = coordinates[0];
+ var p = proj(l);
+ coordinates.x = p.x;
+ coordinates.y = p.y;
+ return p;
+ };
+ }
+
+ function geometry(o, proj) {
+ return o && o.type in types && types[o.type](o, proj);
+ }
+
+ var types = {
+
+ Point: function(o, proj) {
+ var p = proj(o.coordinates),
+ c = po.svg("circle");
+ c.setAttribute("r", 4.5);
+ c.setAttribute("transform", "translate(" + p.x + "," + p.y + ")");
+ return c;
+ },
+
+ MultiPoint: function(o, proj) {
+ var g = po.svg("g"),
+ c = o.coordinates,
+ p, // proj(c[i])
+ x, // svg:circle
+ i = -1,
+ n = c.length;
+ while (++i < n) {
+ x = g.appendChild(po.svg("circle"));
+ x.setAttribute("r", 4.5);
+ x.setAttribute("transform", "translate(" + (p = proj(c[i])).x + "," + p.y + ")");
+ }
+ return g;
+ },
+
+ LineString: function(o, proj) {
+ var x = po.svg("path"),
+ d = ["M"],
+ c = o.coordinates,
+ p, // proj(c[i])
+ i = -1,
+ n = c.length;
+ while (++i < n) d.push((p = proj(c[i])).x, ",", p.y, "L");
+ d.pop();
+ if (!d.length) return;
+ x.setAttribute("d", d.join(""));
+ return x;
+ },
+
+ MultiLineString: function(o, proj) {
+ var x = po.svg("path"),
+ d = [],
+ ci = o.coordinates,
+ cj, // ci[i]
+ i = -1,
+ j,
+ n = ci.length,
+ m;
+ while (++i < n) {
+ cj = ci[i];
+ j = -1;
+ m = cj.length;
+ d.push("M");
+ while (++j < m) d.push((p = proj(cj[j])).x, ",", p.y, "L");
+ d.pop();
+ }
+ if (!d.length) return;
+ x.setAttribute("d", d.join(""));
+ return x;
+ },
+
+ Polygon: function(o, proj) {
+ var x = po.svg("path"),
+ d = [],
+ ci = o.coordinates,
+ cj, // ci[i]
+ i = -1,
+ j,
+ n = ci.length,
+ m;
+ while (++i < n) {
+ cj = ci[i];
+ j = -1;
+ m = cj.length - 1;
+ d.push("M");
+ while (++j < m) d.push((p = proj(cj[j])).x, ",", p.y, "L");
+ d[d.length - 1] = "Z";
+ }
+ if (!d.length) return;
+ x.setAttribute("d", d.join(""));
+ return x;
+ },
+
+ MultiPolygon: function(o, proj) {
+ var x = po.svg("path"),
+ d = [],
+ ci = o.coordinates,
+ cj, // ci[i]
+ ck, // cj[j]
+ i = -1,
+ j,
+ k,
+ n = ci.length,
+ m,
+ l;
+ while (++i < n) {
+ cj = ci[i];
+ j = -1;
+ m = cj.length;
+ while (++j < m) {
+ ck = cj[j];
+ k = -1;
+ l = ck.length - 1;
+ d.push("M");
+ while (++k < l) d.push((p = proj(ck[k])).x, ",", p.y, "L");
+ d[d.length - 1] = "Z";
+ }
+ }
+ if (!d.length) return;
+ x.setAttribute("d", d.join(""));
+ return x;
+ },
+
+ GeometryCollection: function(o, proj) {
+ var g = po.svg("g"),
+ i = -1,
+ c = o.geometries,
+ n = c.length,
+ x;
+ while (++i < n) {
+ x = geometry(c[i], proj);
+ if (x) g.appendChild(x);
+ }
+ return g;
+ }
+
+ };
+
+ function rescale(o, e, k) {
+ return o.type in rescales && rescales[o.type](o, e, k);
+ }
+
+ var rescales = {
+
+ Point: function (o, e, k) {
+ var p = o.coordinates;
+ e.setAttribute("transform", "translate(" + p.x + "," + p.y + ")" + k);
+ },
+
+ MultiPoint: function (o, e, k) {
+ var c = o.coordinates,
+ i = -1,
+ n = p.length,
+ x = e.firstChild,
+ p;
+ while (++i < n) {
+ p = c[i];
+ x.setAttribute("transform", "translate(" + p.x + "," + p.y + ")" + k);
+ x = x.nextSibling;
+ }
+ }
+
+ };
+
+ function load(tile, proj) {
+ var g = tile.element = po.svg("g");
+ tile.features = [];
+
+ proj = projection(proj(tile).locationPoint);
+
+ function update(data) {
+ var updated = [];
+
+ /* Fetch the next batch of features, if so directed. */
+ if (data.next) tile.request = fetch(data.next.href, update);
+
+ /* Convert the GeoJSON to SVG. */
+ switch (data.type) {
+ case "FeatureCollection": {
+ for (var i = 0; i < data.features.length; i++) {
+ var feature = data.features[i],
+ element = geometry(feature.geometry, proj);
+ if (element) updated.push({element: g.appendChild(element), data: feature});
+ }
+ break;
+ }
+ case "Feature": {
+ var element = geometry(data.geometry, proj);
+ if (element) updated.push({element: g.appendChild(element), data: data});
+ break;
+ }
+ default: {
+ var element = geometry(data, proj);
+ if (element) updated.push({element: g.appendChild(element), data: {type: "Feature", geometry: data}});
+ break;
+ }
+ }
+
+ tile.ready = true;
+ updated.push.apply(tile.features, updated);
+ geoJson.dispatch({type: "load", tile: tile, features: updated});
+ }
+
+ if (url != null) {
+ tile.request = fetch(typeof url == "function" ? url(tile) : url, update);
+ } else {
+ update({type: "FeatureCollection", features: features || []});
+ }
+ }
+
+ function unload(tile) {
+ if (tile.request) tile.request.abort(true);
+ }
+
+ function move() {
+ var zoom = geoJson.map().zoom(),
+ tiles = geoJson.cache.locks(), // visible tiles
+ key, // key in locks
+ tile, // locks[key]
+ features, // tile.features
+ i, // current feature index
+ n, // current feature count, features.length
+ feature, // features[i]
+ k; // scale transform
+ if (scale == "fixed") {
+ for (key in tiles) {
+ if ((tile = tiles[key]).scale != zoom) {
+ k = "scale(" + Math.pow(2, tile.zoom - zoom) + ")";
+ i = -1;
+ n = (features = tile.features).length;
+ while (++i < n) rescale((feature = features[i]).data.geometry, feature.element, k);
+ tile.scale = zoom;
+ }
+ }
+ } else {
+ for (key in tiles) {
+ i = -1;
+ n = (features = (tile = tiles[key]).features).length;
+ while (++i < n) rescale((feature = features[i]).data.geometry, feature.element, "");
+ delete tile.scale;
+ }
+ }
+ }
+
+ geoJson.url = function(x) {
+ if (!arguments.length) return url;
+ url = typeof x == "string" && /{.}/.test(x) ? po.url(x) : x;
+ if (url != null) features = null;
+ if (typeof url == "string") geoJson.tile(false);
+ return geoJson.reload();
+ };
+
+ geoJson.features = function(x) {
+ if (!arguments.length) return features;
+ if (features = x) {
+ url = null;
+ geoJson.tile(false);
+ }
+ return geoJson.reload();
+ };
+
+ geoJson.clip = function(x) {
+ if (!arguments.length) return clip;
+ if (clip) container.removeChild(clipPath);
+ if (clip = x) container.insertBefore(clipPath, container.firstChild);
+ var locks = geoJson.cache.locks();
+ for (var key in locks) {
+ if (clip) locks[key].element.setAttribute("clip-path", clipHref);
+ else locks[key].element.removeAttribute("clip-path");
+ }
+ return geoJson;
+ };
+
+ var __tile__ = geoJson.tile;
+ geoJson.tile = function(x) {
+ if (arguments.length && !x) geoJson.clip(x);
+ return __tile__.apply(geoJson, arguments);
+ };
+
+ var __map__ = geoJson.map;
+ geoJson.map = function(x) {
+ if (x && clipRect) {
+ var size = x.tileSize();
+ clipRect.setAttribute("width", size.x);
+ clipRect.setAttribute("height", size.y);
+ }
+ return __map__.apply(geoJson, arguments);
+ };
+
+ geoJson.scale = function(x) {
+ if (!arguments.length) return scale;
+ if (scale = x) geoJson.on("move", move);
+ else geoJson.off("move", move);
+ if (geoJson.map()) move();
+ return geoJson;
+ };
+
+ geoJson.show = function(tile) {
+ if (clip) tile.element.setAttribute("clip-path", clipHref);
+ else tile.element.removeAttribute("clip-path");
+ geoJson.dispatch({type: "show", tile: tile, features: tile.features});
+ return geoJson;
+ };
+
+ geoJson.reshow = function() {
+ var locks = geoJson.cache.locks();
+ for (var key in locks) geoJson.show(locks[key]);
+ return geoJson;
+ };
+
+ return geoJson;
+};
+po.dblclick = function() {
+ var dblclick = {},
+ zoom = "mouse",
+ map,
+ container;
+
+ function handle(e) {
+ var z = map.zoom();
+ if (e.shiftKey) z = Math.ceil(z) - z - 1;
+ else z = 1 - z + Math.floor(z);
+ zoom === "mouse" ? map.zoomBy(z, map.mouse(e)) : map.zoomBy(z);
+ }
+
+ dblclick.zoom = function(x) {
+ if (!arguments.length) return zoom;
+ zoom = x;
+ return dblclick;
+ };
+
+ dblclick.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ container.removeEventListener("dblclick", handle, false);
+ container = null;
+ }
+ if (map = x) {
+ container = map.container();
+ container.addEventListener("dblclick", handle, false);
+ }
+ return dblclick;
+ };
+
+ return dblclick;
+};
+po.drag = function() {
+ var drag = {},
+ map,
+ container,
+ dragging;
+
+ function mousedown(e) {
+ if (e.shiftKey) return;
+ dragging = {
+ x: e.clientX,
+ y: e.clientY
+ };
+ map.focusableParent().focus();
+ e.preventDefault();
+ document.body.style.setProperty("cursor", "move", null);
+ }
+
+ function mousemove(e) {
+ if (!dragging) return;
+ map.panBy({x: e.clientX - dragging.x, y: e.clientY - dragging.y});
+ dragging.x = e.clientX;
+ dragging.y = e.clientY;
+ }
+
+ function mouseup(e) {
+ if (!dragging) return;
+ mousemove(e);
+ dragging = null;
+ document.body.style.removeProperty("cursor");
+ }
+
+ drag.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ container.removeEventListener("mousedown", mousedown, false);
+ container = null;
+ }
+ if (map = x) {
+ container = map.container();
+ container.addEventListener("mousedown", mousedown, false);
+ }
+ return drag;
+ };
+
+ window.addEventListener("mousemove", mousemove, false);
+ window.addEventListener("mouseup", mouseup, false);
+
+ return drag;
+};
+po.wheel = function() {
+ var wheel = {},
+ timePrev = 0,
+ last = 0,
+ smooth = true,
+ zoom = "mouse",
+ location,
+ map,
+ container;
+
+ function move(e) {
+ location = null;
+ }
+
+ // mousewheel events are totally broken!
+ // https://bugs.webkit.org/show_bug.cgi?id=40441
+ // not only that, but Chrome and Safari differ in re. to acceleration!
+ var inner = document.createElement("div"),
+ outer = document.createElement("div");
+ outer.style.visibility = "hidden";
+ outer.style.top = "0px";
+ outer.style.height = "0px";
+ outer.style.width = "0px";
+ outer.style.overflowY = "scroll";
+ inner.style.height = "2000px";
+ outer.appendChild(inner);
+ document.body.appendChild(outer);
+
+ function mousewheel(e) {
+ var delta = e.wheelDelta || -e.detail,
+ point;
+
+ /* Detect the pixels that would be scrolled by this wheel event. */
+ if (delta) {
+ if (smooth) {
+ try {
+ outer.scrollTop = 1000;
+ outer.dispatchEvent(e);
+ delta = 1000 - outer.scrollTop;
+ } catch (error) {
+ // Derp! Hope for the best?
+ }
+ delta *= .005;
+ }
+
+ /* If smooth zooming is disabled, batch events into unit steps. */
+ else {
+ var timeNow = Date.now();
+ if (timeNow - timePrev > 200) {
+ delta = delta > 0 ? +1 : -1;
+ timePrev = timeNow;
+ } else {
+ delta = 0;
+ }
+ }
+ }
+
+ if (delta) {
+ switch (zoom) {
+ case "mouse": {
+ point = map.mouse(e);
+ if (!location) location = map.pointLocation(point);
+ map.off("move", move).zoomBy(delta, point, location).on("move", move);
+ break;
+ }
+ case "location": {
+ map.zoomBy(delta, map.locationPoint(location), location);
+ break;
+ }
+ default: { // center
+ map.zoomBy(delta);
+ break;
+ }
+ }
+ }
+
+ e.preventDefault();
+ return false; // for Firefox
+ }
+
+ wheel.smooth = function(x) {
+ if (!arguments.length) return smooth;
+ smooth = x;
+ return wheel;
+ };
+
+ wheel.zoom = function(x, l) {
+ if (!arguments.length) return zoom;
+ zoom = x;
+ location = l;
+ if (map) {
+ if (zoom == "mouse") map.on("move", move);
+ else map.off("move", move);
+ }
+ return wheel;
+ };
+
+ wheel.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ container.removeEventListener("mousemove", move, false);
+ container.removeEventListener("mousewheel", mousewheel, false);
+ container.removeEventListener("MozMousePixelScroll", mousewheel, false);
+ container = null;
+ map.off("move", move);
+ }
+ if (map = x) {
+ if (zoom == "mouse") map.on("move", move);
+ container = map.container();
+ container.addEventListener("mousemove", move, false);
+ container.addEventListener("mousewheel", mousewheel, false);
+ container.addEventListener("MozMousePixelScroll", mousewheel, false);
+ }
+ return wheel;
+ };
+
+ return wheel;
+};
+po.arrow = function() {
+ var arrow = {},
+ key = {left: 0, right: 0, up: 0, down: 0},
+ last = 0,
+ repeatTimer,
+ repeatDelay = 250,
+ repeatInterval = 50,
+ speed = 16,
+ map,
+ parent;
+
+ function keydown(e) {
+ if (e.ctrlKey || e.altKey || e.metaKey) return;
+ var now = Date.now(), dx = 0, dy = 0;
+ switch (e.keyCode) {
+ case 37: {
+ if (!key.left) {
+ last = now;
+ key.left = 1;
+ if (!key.right) dx = speed;
+ }
+ break;
+ }
+ case 39: {
+ if (!key.right) {
+ last = now;
+ key.right = 1;
+ if (!key.left) dx = -speed;
+ }
+ break;
+ }
+ case 38: {
+ if (!key.up) {
+ last = now;
+ key.up = 1;
+ if (!key.down) dy = speed;
+ }
+ break;
+ }
+ case 40: {
+ if (!key.down) {
+ last = now;
+ key.down = 1;
+ if (!key.up) dy = -speed;
+ }
+ break;
+ }
+ default: return;
+ }
+ if (dx || dy) map.panBy({x: dx, y: dy});
+ if (!repeatTimer && (key.left | key.right | key.up | key.down)) {
+ repeatTimer = setInterval(repeat, repeatInterval);
+ }
+ e.preventDefault();
+ }
+
+ function keyup(e) {
+ last = Date.now();
+ switch (e.keyCode) {
+ case 37: key.left = 0; break;
+ case 39: key.right = 0; break;
+ case 38: key.up = 0; break;
+ case 40: key.down = 0; break;
+ default: return;
+ }
+ if (repeatTimer && !(key.left | key.right | key.up | key.down)) {
+ repeatTimer = clearInterval(repeatTimer);
+ }
+ e.preventDefault();
+ }
+
+ function keypress(e) {
+ switch (e.charCode) {
+ case 45: case 95: map.zoom(Math.ceil(map.zoom()) - 1); break; // - _
+ case 43: case 61: map.zoom(Math.floor(map.zoom()) + 1); break; // = +
+ default: return;
+ }
+ e.preventDefault();
+ }
+
+ function repeat() {
+ if (!map) return;
+ if (Date.now() < last + repeatDelay) return;
+ var dx = (key.left - key.right) * speed,
+ dy = (key.up - key.down) * speed;
+ if (dx || dy) map.panBy({x: dx, y: dy});
+ }
+
+ arrow.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ parent.removeEventListener("keypress", keypress, false);
+ parent.removeEventListener("keydown", keydown, false);
+ parent.removeEventListener("keyup", keyup, false);
+ parent = null;
+ }
+ if (map = x) {
+ parent = map.focusableParent();
+ parent.addEventListener("keypress", keypress, false);
+ parent.addEventListener("keydown", keydown, false);
+ parent.addEventListener("keyup", keyup, false);
+ }
+ return arrow;
+ };
+
+ arrow.speed = function(x) {
+ if (!arguments.length) return speed;
+ speed = x;
+ return arrow;
+ };
+
+ return arrow;
+};
+po.hash = function() {
+ var hash = {},
+ s0, // cached location.hash
+ lat = 90 - 1e-8, // allowable latitude range
+ map;
+
+ var parser = function(map, s) {
+ var args = s.split("/").map(Number);
+ if (args.length < 3 || args.some(isNaN)) return true; // replace bogus hash
+ else {
+ var size = map.size();
+ map.zoomBy(args[0] - map.zoom(),
+ {x: size.x / 2, y: size.y / 2},
+ {lat: Math.min(lat, Math.max(-lat, args[1])), lon: args[2]});
+ }
+ };
+
+ var formatter = function(map) {
+ var center = map.center(),
+ zoom = map.zoom(),
+ precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));
+ return "#" + zoom.toFixed(2)
+ + "/" + center.lat.toFixed(precision)
+ + "/" + center.lon.toFixed(precision);
+ };
+
+ function move() {
+ var s1 = formatter(map);
+ if (s0 !== s1) location.replace(s0 = s1); // don't recenter the map!
+ }
+
+ function hashchange() {
+ if (location.hash === s0) return; // ignore spurious hashchange events
+ if (parser(map, (s0 = location.hash).substring(1)))
+ move(); // replace bogus hash
+ }
+
+ hash.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ map.off("move", move);
+ window.removeEventListener("hashchange", hashchange, false);
+ }
+ if (map = x) {
+ map.on("move", move);
+ window.addEventListener("hashchange", hashchange, false);
+ location.hash ? hashchange() : move();
+ }
+ return hash;
+ };
+
+ hash.parser = function(x) {
+ if (!arguments.length) return parser;
+ parser = x;
+ return hash;
+ };
+
+ hash.formatter = function(x) {
+ if (!arguments.length) return formatter;
+ formatter = x;
+ return hash;
+ };
+
+ return hash;
+};
+po.touch = function() {
+ var touch = {},
+ map,
+ container,
+ rotate = false,
+ last = 0,
+ zoom,
+ angle,
+ locations = {}; // touch identifier -> location
+
+ window.addEventListener("touchmove", touchmove, false);
+
+ function touchstart(e) {
+ var i = -1,
+ n = e.touches.length,
+ t = Date.now();
+
+ // doubletap detection
+ if ((n == 1) && (t - last < 300)) {
+ var z = map.zoom();
+ map.zoomBy(1 - z + Math.floor(z), map.mouse(e.touches[0]));
+ e.preventDefault();
+ }
+ last = t;
+
+ // store original zoom & touch locations
+ zoom = map.zoom();
+ angle = map.angle();
+ while (++i < n) {
+ t = e.touches[i];
+ locations[t.identifier] = map.pointLocation(map.mouse(t));
+ }
+ }
+
+ function touchmove(e) {
+ switch (e.touches.length) {
+ case 1: { // single-touch pan
+ var t0 = e.touches[0];
+ map.zoomBy(0, map.mouse(t0), locations[t0.identifier]);
+ e.preventDefault();
+ break;
+ }
+ case 2: { // double-touch pan + zoom + rotate
+ var t0 = e.touches[0],
+ t1 = e.touches[1],
+ p0 = map.mouse(t0),
+ p1 = map.mouse(t1),
+ p2 = {x: (p0.x + p1.x) / 2, y: (p0.y + p1.y) / 2}, // center point
+ c0 = po.map.locationCoordinate(locations[t0.identifier]),
+ c1 = po.map.locationCoordinate(locations[t1.identifier]),
+ c2 = {row: (c0.row + c1.row) / 2, column: (c0.column + c1.column) / 2, zoom: 0},
+ l2 = po.map.coordinateLocation(c2); // center location
+ map.zoomBy(Math.log(e.scale) / Math.LN2 + zoom - map.zoom(), p2, l2);
+ if (rotate) map.angle(e.rotation / 180 * Math.PI + angle);
+ e.preventDefault();
+ break;
+ }
+ }
+ }
+
+ touch.rotate = function(x) {
+ if (!arguments.length) return rotate;
+ rotate = x;
+ return touch;
+ };
+
+ touch.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ container.removeEventListener("touchstart", touchstart, false);
+ container = null;
+ }
+ if (map = x) {
+ container = map.container();
+ container.addEventListener("touchstart", touchstart, false);
+ }
+ return touch;
+ };
+
+ return touch;
+};
+// Default map controls.
+po.interact = function() {
+ var interact = {},
+ drag = po.drag(),
+ wheel = po.wheel(),
+ dblclick = po.dblclick(),
+ touch = po.touch(),
+ arrow = po.arrow();
+
+ interact.map = function(x) {
+ drag.map(x);
+ wheel.map(x);
+ dblclick.map(x);
+ touch.map(x);
+ arrow.map(x);
+ return interact;
+ };
+
+ return interact;
+};
+po.compass = function() {
+ var compass = {},
+ g = po.svg("g"),
+ ticks = {},
+ r = 30,
+ speed = 16,
+ last = 0,
+ repeatDelay = 250,
+ repeatInterval = 50,
+ position = "top-left", // top-left, top-right, bottom-left, bottom-right
+ zoomStyle = "small", // none, small, big
+ zoomContainer,
+ panStyle = "small", // none, small
+ panTimer,
+ panDirection,
+ panContainer,
+ drag,
+ dragRect = po.svg("rect"),
+ map,
+ container,
+ window;
+
+ g.setAttribute("class", "compass");
+ dragRect.setAttribute("class", "back fore");
+ dragRect.setAttribute("pointer-events", "none");
+ dragRect.setAttribute("display", "none");
+
+ function panStart(e) {
+ g.setAttribute("class", "compass active");
+ if (!panTimer) panTimer = setInterval(panRepeat, repeatInterval);
+ if (panDirection) map.panBy(panDirection);
+ last = Date.now();
+ return cancel(e);
+ }
+
+ function panRepeat() {
+ if (panDirection && (Date.now() > last + repeatDelay)) {
+ map.panBy(panDirection);
+ }
+ }
+
+ function mousedown(e) {
+ if (e.shiftKey) {
+ drag = {x0: map.mouse(e)};
+ map.focusableParent().focus();
+ return cancel(e);
+ }
+ }
+
+ function mousemove(e) {
+ if (!drag) return;
+ drag.x1 = map.mouse(e);
+ dragRect.setAttribute("x", Math.min(drag.x0.x, drag.x1.x));
+ dragRect.setAttribute("y", Math.min(drag.x0.y, drag.x1.y));
+ dragRect.setAttribute("width", Math.abs(drag.x0.x - drag.x1.x));
+ dragRect.setAttribute("height", Math.abs(drag.x0.y - drag.x1.y));
+ dragRect.removeAttribute("display");
+ }
+
+ function mouseup(e) {
+ g.setAttribute("class", "compass");
+ if (drag) {
+ if (drag.x1) {
+ map.extent([
+ map.pointLocation({
+ x: Math.min(drag.x0.x, drag.x1.x),
+ y: Math.max(drag.x0.y, drag.x1.y)
+ }),
+ map.pointLocation({
+ x: Math.max(drag.x0.x, drag.x1.x),
+ y: Math.min(drag.x0.y, drag.x1.y)
+ })
+ ]);
+ dragRect.setAttribute("display", "none");
+ }
+ drag = null;
+ }
+ if (panTimer) {
+ clearInterval(panTimer);
+ panTimer = 0;
+ }
+ }
+
+ function panBy(x) {
+ return function() {
+ x ? this.setAttribute("class", "active") : this.removeAttribute("class");
+ panDirection = x;
+ };
+ }
+
+ function zoomBy(x) {
+ return function(e) {
+ g.setAttribute("class", "compass active");
+ var z = map.zoom();
+ map.zoom(x < 0 ? Math.ceil(z) - 1 : Math.floor(z) + 1);
+ return cancel(e);
+ };
+ }
+
+ function zoomTo(x) {
+ return function(e) {
+ map.zoom(x);
+ return cancel(e);
+ };
+ }
+
+ function zoomOver() {
+ this.setAttribute("class", "active");
+ }
+
+ function zoomOut() {
+ this.removeAttribute("class");
+ }
+
+ function cancel(e) {
+ e.stopPropagation();
+ e.preventDefault();
+ return false;
+ }
+
+ function pan(by) {
+ var x = Math.SQRT1_2 * r,
+ y = r * .7,
+ z = r * .2,
+ g = po.svg("g"),
+ dir = g.appendChild(po.svg("path")),
+ chv = g.appendChild(po.svg("path"));
+ dir.setAttribute("class", "direction");
+ dir.setAttribute("pointer-events", "all");
+ dir.setAttribute("d", "M0,0L" + x + "," + x + "A" + r + "," + r + " 0 0,1 " + -x + "," + x + "Z");
+ chv.setAttribute("class", "chevron");
+ chv.setAttribute("d", "M" + z + "," + (y - z) + "L0," + y + " " + -z + "," + (y - z));
+ chv.setAttribute("pointer-events", "none");
+ g.addEventListener("mousedown", panStart, false);
+ g.addEventListener("mouseover", panBy(by), false);
+ g.addEventListener("mouseout", panBy(null), false);
+ g.addEventListener("dblclick", cancel, false);
+ return g;
+ }
+
+ function zoom(by) {
+ var x = r * .4,
+ y = x / 2,
+ g = po.svg("g"),
+ back = g.appendChild(po.svg("path")),
+ dire = g.appendChild(po.svg("path")),
+ chev = g.appendChild(po.svg("path")),
+ fore = g.appendChild(po.svg("path"));
+ back.setAttribute("class", "back");
+ back.setAttribute("d", "M" + -x + ",0V" + -x + "A" + x + "," + x + " 0 1,1 " + x + "," + -x + "V0Z");
+ dire.setAttribute("class", "direction");
+ dire.setAttribute("d", back.getAttribute("d"));
+ chev.setAttribute("class", "chevron");
+ chev.setAttribute("d", "M" + -y + "," + -x + "H" + y + (by > 0 ? "M0," + (-x - y) + "V" + -y : ""));
+ fore.setAttribute("class", "fore");
+ fore.setAttribute("fill", "none");
+ fore.setAttribute("d", back.getAttribute("d"));
+ g.addEventListener("mousedown", zoomBy(by), false);
+ g.addEventListener("mouseover", zoomOver, false);
+ g.addEventListener("mouseout", zoomOut, false);
+ g.addEventListener("dblclick", cancel, false);
+ return g;
+ }
+
+ function tick(i) {
+ var x = r * .2,
+ y = r * .4,
+ g = po.svg("g"),
+ back = g.appendChild(po.svg("rect")),
+ chev = g.appendChild(po.svg("path"));
+ back.setAttribute("pointer-events", "all");
+ back.setAttribute("fill", "none");
+ back.setAttribute("x", -y);
+ back.setAttribute("y", -.75 * y);
+ back.setAttribute("width", 2 * y);
+ back.setAttribute("height", 1.5 * y);
+ chev.setAttribute("class", "chevron");
+ chev.setAttribute("d", "M" + -x + ",0H" + x);
+ g.addEventListener("mousedown", zoomTo(i), false);
+ g.addEventListener("dblclick", cancel, false);
+ return g;
+ }
+
+ function move() {
+ var x = r + 6, y = x, size = map.size();
+ switch (position) {
+ case "top-left": break;
+ case "top-right": x = size.x - x; break;
+ case "bottom-left": y = size.y - y; break;
+ case "bottom-right": x = size.x - x; y = size.y - y; break;
+ }
+ g.setAttribute("transform", "translate(" + x + "," + y + ")");
+ dragRect.setAttribute("transform", "translate(" + -x + "," + -y + ")");
+ for (var i in ticks) {
+ i == map.zoom()
+ ? ticks[i].setAttribute("class", "active")
+ : ticks[i].removeAttribute("class");
+ }
+ }
+
+ function draw() {
+ while (g.lastChild) g.removeChild(g.lastChild);
+
+ g.appendChild(dragRect);
+
+ if (panStyle != "none") {
+ panContainer = g.appendChild(po.svg("g"));
+ panContainer.setAttribute("class", "pan");
+
+ var back = panContainer.appendChild(po.svg("circle"));
+ back.setAttribute("class", "back");
+ back.setAttribute("r", r);
+
+ var s = panContainer.appendChild(pan({x: 0, y: -speed}));
+ s.setAttribute("transform", "rotate(0)");
+
+ var w = panContainer.appendChild(pan({x: speed, y: 0}));
+ w.setAttribute("transform", "rotate(90)");
+
+ var n = panContainer.appendChild(pan({x: 0, y: speed}));
+ n.setAttribute("transform", "rotate(180)");
+
+ var e = panContainer.appendChild(pan({x: -speed, y: 0}));
+ e.setAttribute("transform", "rotate(270)");
+
+ var fore = panContainer.appendChild(po.svg("circle"));
+ fore.setAttribute("fill", "none");
+ fore.setAttribute("class", "fore");
+ fore.setAttribute("r", r);
+ } else {
+ panContainer = null;
+ }
+
+ if (zoomStyle != "none") {
+ zoomContainer = g.appendChild(po.svg("g"));
+ zoomContainer.setAttribute("class", "zoom");
+
+ var j = -.5;
+ if (zoomStyle == "big") {
+ ticks = {};
+ for (var i = map.zoomRange()[0], j = 0; i <= map.zoomRange()[1]; i++, j++) {
+ (ticks[i] = zoomContainer.appendChild(tick(i)))
+ .setAttribute("transform", "translate(0," + (-(j + .75) * r * .4) + ")");
+ }
+ }
+
+ var p = panStyle == "none" ? .4 : 2;
+ zoomContainer.setAttribute("transform", "translate(0," + r * (/^top-/.test(position) ? (p + (j + .5) * .4) : -p) + ")");
+ zoomContainer.appendChild(zoom(+1)).setAttribute("transform", "translate(0," + (-(j + .5) * r * .4) + ")");
+ zoomContainer.appendChild(zoom(-1)).setAttribute("transform", "scale(-1)");
+ } else {
+ zoomContainer = null;
+ }
+
+ move();
+ }
+
+ compass.radius = function(x) {
+ if (!arguments.length) return r;
+ r = x;
+ if (map) draw();
+ return compass;
+ };
+
+ compass.speed = function(x) {
+ if (!arguments.length) return r;
+ speed = x;
+ return compass;
+ };
+
+ compass.position = function(x) {
+ if (!arguments.length) return position;
+ position = x;
+ if (map) draw();
+ return compass;
+ };
+
+ compass.pan = function(x) {
+ if (!arguments.length) return panStyle;
+ panStyle = x;
+ if (map) draw();
+ return compass;
+ };
+
+ compass.zoom = function(x) {
+ if (!arguments.length) return zoomStyle;
+ zoomStyle = x;
+ if (map) draw();
+ return compass;
+ };
+
+ compass.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ container.removeEventListener("mousedown", mousedown, false);
+ container.removeChild(g);
+ container = null;
+ window.removeEventListener("mousemove", mousemove, false);
+ window.removeEventListener("mouseup", mouseup, false);
+ window = null;
+ map.off("move", move).off("resize", move);
+ }
+ if (map = x) {
+ container = map.container();
+ container.appendChild(g);
+ container.addEventListener("mousedown", mousedown, false);
+ window = container.ownerDocument.defaultView;
+ window.addEventListener("mousemove", mousemove, false);
+ window.addEventListener("mouseup", mouseup, false);
+ map.on("move", move).on("resize", move);
+ draw();
+ }
+ return compass;
+ };
+
+ return compass;
+};
+po.grid = function() {
+ var grid = {},
+ map,
+ g = po.svg("g");
+
+ g.setAttribute("class", "grid");
+
+ function move(e) {
+ var p,
+ line = g.firstChild,
+ size = map.size(),
+ nw = map.pointLocation(zero),
+ se = map.pointLocation(size),
+ step = Math.pow(2, 4 - Math.round(map.zoom()));
+
+ // Round to step.
+ nw.lat = Math.floor(nw.lat / step) * step;
+ nw.lon = Math.ceil(nw.lon / step) * step;
+
+ // Longitude ticks.
+ for (var x; (x = map.locationPoint(nw).x) <= size.x; nw.lon += step) {
+ if (!line) line = g.appendChild(po.svg("line"));
+ line.setAttribute("x1", x);
+ line.setAttribute("x2", x);
+ line.setAttribute("y1", 0);
+ line.setAttribute("y2", size.y);
+ line = line.nextSibling;
+ }
+
+ // Latitude ticks.
+ for (var y; (y = map.locationPoint(nw).y) <= size.y; nw.lat -= step) {
+ if (!line) line = g.appendChild(po.svg("line"));
+ line.setAttribute("y1", y);
+ line.setAttribute("y2", y);
+ line.setAttribute("x1", 0);
+ line.setAttribute("x2", size.x);
+ line = line.nextSibling;
+ }
+
+ // Remove extra ticks.
+ while (line) {
+ var next = line.nextSibling;
+ g.removeChild(line);
+ line = next;
+ }
+ }
+
+ grid.map = function(x) {
+ if (!arguments.length) return map;
+ if (map) {
+ g.parentNode.removeChild(g);
+ map.off("move", move).off("resize", move);
+ }
+ if (map = x) {
+ map.on("move", move).on("resize", move);
+ map.container().appendChild(g);
+ map.dispatch({type: "move"});
+ }
+ return grid;
+ };
+
+ return grid;
+};
+po.stylist = function() {
+ var attrs = [],
+ styles = [],
+ title;
+
+ function stylist(e) {
+ var ne = e.features.length,
+ na = attrs.length,
+ ns = styles.length,
+ f, // feature
+ d, // data
+ o, // element
+ x, // attr or style or title descriptor
+ v, // attr or style or title value
+ i,
+ j;
+ for (i = 0; i < ne; ++i) {
+ if (!(o = (f = e.features[i]).element)) continue;
+ d = f.data;
+ for (j = 0; j < na; ++j) {
+ v = (x = attrs[j]).value;
+ if (typeof v === "function") v = v.call(null, d);
+ v == null ? (x.name.local
+ ? o.removeAttributeNS(x.name.space, x.name.local)
+ : o.removeAttribute(x.name)) : (x.name.local
+ ? o.setAttributeNS(x.name.space, x.name.local, v)
+ : o.setAttribute(x.name, v));
+ }
+ for (j = 0; j < ns; ++j) {
+ v = (x = styles[j]).value;
+ if (typeof v === "function") v = v.call(null, d);
+ v == null
+ ? o.style.removeProperty(x.name)
+ : o.style.setProperty(x.name, v, x.priority);
+ }
+ if (v = title) {
+ if (typeof v === "function") v = v.call(null, d);
+ while (o.lastChild) o.removeChild(o.lastChild);
+ if (v != null) o.appendChild(po.svg("title")).appendChild(document.createTextNode(v));
+ }
+ }
+ }
+
+ stylist.attr = function(n, v) {
+ attrs.push({name: ns(n), value: v});
+ return stylist;
+ };
+
+ stylist.style = function(n, v, p) {
+ styles.push({name: n, value: v, priority: arguments.length < 3 ? null : p});
+ return stylist;
+ };
+
+ stylist.title = function(v) {
+ title = v;
+ return stylist;
+ };
+
+ return stylist;
+};
+})(org.polymaps);
projects / profile / ivi / moute.git / commitdiff