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mapsense-examples/index.html

Last active August 29, 2015 14:21
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index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="http://d3js.org/topojson.v1.min.js" charset="utf-8"></script>
<!-- <script src="https://developer.mapsense.co/mapsense.js" charset="utf-8"></script> -->
<script src="./mapsense.js"></script>
<link type="text/css" href="https://developer.mapsense.co/mapsense.css" rel="stylesheet"/>
<style>
html, body, #myMap{
height: 100%;
width: 100%;
margin: 0; padding: 0;
font-family: sans-serif;
}
.mapFeatures {
fill: rgba(68, 167, 228, 0.0); /*give it fill, so we can interact with it*/
stroke: rgba(240,240,240, 1); /*white-gray*/
stroke-width: 1;
}
.hoverFeature {
stroke: rgba(68, 167, 228, 1); /*blue*/
stroke-width: 3;
}
.salesRegion {
stroke: rgba(255,50,80,1);
fill: none;
stroke-width:3;
}
.popup {
position: absolute;
font-family: sans-serif;
font-size: 11px;
color: #666;
visibility: hidden;
border-radius: 3px;
pointer-events: none;
border: 1px solid #bbb;
padding: 8px;
background-color: rgba(255, 255, 255, .95);
max-height: 500px;
overflow: normal;
}
table {
border-collapse: collapse;
}
table, th, td {
border: 1px solid #ddd;
padding: 7px;
}
.detailKey {
background: #eee;
opacity: .8;
text-transform: uppercase;
font-weight: 600;
}
.detailVal {
background: rgba(255,255,255,0.8);
}
</style>
</head>
<body>
<div id="myMap"></div>
<script>
var selection_function = (function() {
var whitelist = [];
whitelist = ['fips_code','population','female','male','hhi','unemployment'];
/* The id of the previously hovered-over feature. */
var hoverId = null;
return function(s) {
s.attr("class", function(d) {
var classes = ["mapFeatures"],
props = d.properties;
if (props) {
if (props.layer) classes.push(props.layer);
if (props.sub_layer) classes.push(props.sub_layer);
}
if (d.id !== null && d.id == hoverId) {
classes.push("hoverFeature");
}
return classes.join(' ');
})
.on("mouseover", function(d) {
if ( d.properties.minz >= 5 ) {
d3.select(this).classed("selected",true);
}
var text = "";
var value;
text += '<div class="detailCard"><table><tbody>';
if (whitelist.length > 0) {
for (var i = 0; i < whitelist.length; i++) {
key = whitelist[i];
if ( d.properties && d.properties[key] ) {
value = d.properties[key];
value = isFloat(value) ? value.toFixed(4) : value;
if(key == "fips_code") key = "zip_code";
text += '<tr><td class="detailKey">' + key + '</td><td class="detailVal">' + value + '</td></tr>';
}
}
} else {
for (var key in d.properties) {
text += '<tr><td class="detailKey">' + key + '</td><td class="detailVal">' + d.properties[key] + '</td></tr>';
}
}
tooltip.html(text);
if (d.id != hoverId) {
hoverId = d.id;
layer.selection( selection_function );
}
return tooltip.style("visibility", "visible");
})
.on("mousemove", function(){return tooltip.style("top",(d3.event.pageY-0)+"px").style("left",(d3.event.pageX+20)+"px");})
.on("mouseout", function(d){
d3.select(this).classed("hoverFeature",false);
hoverId = null;
return tooltip.style("visibility", "hidden");
});
};
})();
function isFloat(n){
var r = Number(n) && n%1!==0;
return r;
}
function drawCircle(pos, r) {
var f = {geometry:{type:"Point", coordinates:[pos.lon, pos.lat]}, properties:{radius:r}, type:"Feature", id:"salesRegion"};
return f;
// var newFeatures = regionLayer.features();
// newFeatures.push(f);
// regionLayer.features(newFeatures);
}
var the_key = "key-2d5eacd8b924489c8ed5e8418bd883bc";
var mapExtent = [
{lon: -122.520, lat: 37.700},
{lon: -122.32, lat: 37.817}
];
var map = mapsense
.map("#myMap") // init the map
.add(mapsense.basemap().apiKey(the_key).style("tron"))
// .zoomRange([10,11.45])
.center({lon: -122.410, lat: 37.740});
var url = "https://{S}-api.mapsense.co/universes/mapsense.demographics/{Z}/{X}/{Y}.topojson?api-key="+the_key+"&layers=zip_code";
var layer = mapsense.topoJson() //init a topojson layer
.url(mapsense.url(url).hosts(['a', 'b', 'c', 'd'])) //tell it where to look
.selection(selection_function).clip("true");
map.add(layer);
var features = [drawCircle({lon: -122.415, lat: 37.800}, 40)];
features.push(drawCircle({lon: -122.410, lat: 37.750}, 80));
features.push(drawCircle({lon: -122.470, lat: 37.730}, 100));
var regionLayer = mapsense.topoJson()
.features(features)
.selection(function(d){
d.attr("class", "salesRegion");
// d.attr("r", 20);
d.attr("r", function(feature) {
return feature.properties.radius;
});
})
.clip(false)
.scale("relative");
map.add(regionLayer);
var tooltip = d3.select('body')
.append("div")
.attr("class","popup");
</script>
</body>
</html>
Raw
mapsense.js
(function(){
var mapsense = {version: "1.0.0"},
ms = mapsense;
var zero = {x: 0, y: 0};
ms.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: ms.ns[name.substring(0, i)],
local: name.substring(i + 1)
};
}
ms.id = (function() {
var id = 0;
return function() {
return ++id;
};
})();
ms.svg = function(type) {
return document.createElementNS(ms.ns.svg, type);
};
ms.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);
};
ms.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;
};
ms.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 = ms.map.coordinateLocation({row: c.row, column: column, zoom: c.zoom}),
se = ms.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;
};
ms.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);
}
};
};
ms.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 merge(dest, src) {
for (var property in src) {
dest[property] = src[property];
}
return dest;
}
function request(url, callback, options) {
var req;
function send() {
req = new XMLHttpRequest();
req.open("GET", url, true);
if (options) {
if (options.mimeType && req.overrideMimeType)
req.overrideMimeType(options.mimeType);
if (options.responseType)
req.responseType = options.responseType;
if (options.xhrFields) {
for (var f in options.xhrFields) {
req[f] = options.xhrFields[f];
}
}
}
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: 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, options) {
return request(url, function(req) {
if (req.responseText) callback(JSON.parse(req.responseText));
}, merge({ mimeType: "application/json" }, options));
}
function xml(url, callback, options) {
return request(url, function(req) {
if (req.responseXML) callback(req.responseXML);
}, merge({ mimeType: "application/xml" }, options));
}
function octetStream(url, callback, options) {
var defaultOptions = {
mimeType: "application/octet-stream",
responseType: "arraybuffer"
};
return request(url, function(req) {
if (req.response) callback(req.response);
}, merge(defaultOptions, options));
}
function image(imageElement, 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;
imageElement.setAttributeNS(ms.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,
octetStream: octetStream,
image: image
};
})();
ms.map = function(mapContainer) {
var map = {},
container,
size,
sizeActual = zero,
sizeRadius = zero, // sizeActual / 2
tileSize = {x: 512, y: 512},
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}
];
var interact = ms.interact();
if (typeof mapContainer === "string")
container = document.querySelector(mapContainer);
else
container = mapContainer;
if (!container)
throw new Error("Invalid map container.");
map.interact = function(x) {
if (!arguments.length) return interact;
interact.map(x ? map : null);
};
map.locationCoordinate = function(l) {
var c = ms.map.locationCoordinate(l),
k = Math.pow(2, zoom);
c.column *= k;
c.row *= k;
c.zoom += zoom;
return c;
};
map.coordinateLocation = ms.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 = ms.svg("rect");
rect.setAttribute("visibility", "hidden");
rect.setAttribute("pointer-events", "all");
var svgContainer = ms.svg("svg");
svgContainer.setAttribute("class", "mapsense-map");
svgContainer.appendChild(rect);
var relativeContainer = document.createElement("div");
relativeContainer.style.setProperty("position", "relative");
relativeContainer.style.setProperty("width", "100%");
relativeContainer.style.setProperty("height", "100%");
relativeContainer.appendChild(svgContainer);
container.appendChild(relativeContainer);
map.container = function() {
return container;
};
map.relativeContainer = function() {
return relativeContainer;
};
map.svgContainer = function() {
return svgContainer;
};
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 = (svgContainer.ownerSVGElement || svgContainer).createSVGPoint();
if ((bug44083 < 0) && (window.scrollX || window.scrollY)) {
var svg = document.body.appendChild(ms.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(svgContainer.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 = ms.dispatch(map);
map.interact(true);
return map.resize(); // infer size
};
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.)!
if (window.addEventListener) {
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));
}
ms.map.locationCoordinate = function(l) {
var k = 1 / 360;
return {
column: (l.lon + 180) * k,
row: (180 - lat2y(l.lat)) * k,
zoom: 0
};
};
ms.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;
ms.layer = function(load, unload) {
var layer = {},
cache = layer.cache = ms.cache(load, unload).size(512),
tile = true,
visible = true,
zoom,
id,
map,
container = ms.svg("g"),
transform,
levelZoom,
levels = {};
container.setAttribute("class", "layer");
for (var i = -4; i <= -1; i++) levels[i] = container.appendChild(ms.svg("g"));
for (var i = 2; i >= 1; i--) levels[i] = container.appendChild(ms.svg("g"));
levels[0] = container.appendChild(ms.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) + ")");
}
}
// 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});
var col = tileCenter.column, row = tileCenter.row;
tileCenter.column = Math.round((Math.round(tileSize.x * tileCenter.column) + (mapSize.x & 1) / 2) / tileSize.x);
tileCenter.row = Math.round((Math.round(tileSize.y * tileCenter.row) + (mapSize.y & 1) / 2) / tileSize.y);
col -= tileCenter.column;
row -= tileCenter.row;
// set the layer transform
var roundedZoomFraction = roundZoom(Math.pow(2, mapZoomFraction));
container.setAttribute("transform",
"translate(" +
Math.round(mapSize.x / 2 - col * tileSize.x * roundedZoomFraction) +
"," +
Math.round(mapSize.y / 2 - row * tileSize.y * roundedZoomFraction) +
")" +
(mapAngle ? "rotate(" + mapAngle / Math.PI * 180 + ")" : "") +
(mapZoomFraction ? "scale(" + roundedZoomFraction + ")" : "") +
(transform ? transform.zoomFraction(mapZoomFraction) : ""));
// 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 = ms.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;
}
}
function roundZoom(z) {
return Math.round(z * 256) / 256;
}
// position tiles
for (var key in newLocks) {
var t = newLocks[key],
k = roundZoom(Math.pow(2, t.level = t.zoom - tileCenter.zoom));
var transform = "translate(" +
Math.round(t.x = tileSize.x * (t.column - tileCenter.column * k)) + "px" + "," +
Math.round(t.y = tileSize.y * (t.row - tileCenter.row * k)) + "px" + ")";
d3.select(t.element).style("transform", transform);
d3.select(t.element).style("-webkit-transform", transform);
d3.select(t.element).style("-ms-transform", transform);
}
// 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.svgContainer().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 = ms.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);
}
ms.image = function() {
var image = ms.layer(load, unload),
url;
function load(tile) {
var element = tile.element = ms.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 = ms.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(ms.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) ? ms.url(x) : x;
return image.reload();
};
return image;
};
ms.geoJson = function(fetch) {
var geoJson = ms.layer(load, unload),
container = geoJson.container(),
url,
clip = false,
clipId = "org.polymaps." + ms.id(),
clipHref = "url(#" + clipId + ")",
clipPath = container.insertBefore(ms.svg("clipPath"), container.firstChild),
clipRect = clipPath.appendChild(ms.svg("rect")),
scale = "fixed",
zoom = null,
pointRadius = 4.5,
features,
tileBackground = false,
selection,
zoomWhenLoaded;
container.setAttribute("fill-rule", "evenodd");
clipPath.setAttribute("id", clipId);
if (!arguments.length) fetch = ms.queue.json;
function projection(proj) {
var l = {lat: 0, lon: 0};
return function(coordinates, c) {
l.lat = coordinates[1];
l.lon = coordinates[0];
var p = proj(l);
c.x = p.x;
c.y = p.y;
return p;
};
}
function rescale(o, e, k) {
var g = o.geometry;
return g.type in rescales && rescales[g.type](o, e, k);
}
var rescales = {
Point: function (o, e, k) {
e.setAttribute("transform", "translate(" + o.x + "," + o.y + ")" + k);
},
MultiPoint: function (o, e, k) {
e.setAttribute("transform", "translate(" + o.x + "," + o.y + ")" + k);
}
};
// Create path projecting WGS84 spherical Mercator coordinates.
function projectSpherical(tileProj) {
return d3.geo.path().projection({
stream: function(stream) {
return {
point: function(x, y) {
// Latitudes at the poles (or beyond!) result in unrenderable NaN's and Infinities.
var epsilon = 1.0e-6;
y = Math.min(90 - epsilon, y);
y = Math.max(-90 + epsilon, y);
var p = tileProj.locationPoint({ lon: x, lat: y });
stream.point(Math.round(2 * p.x) / 2, Math.round(2 * p.y) / 2);
},
sphere: function() { stream.sphere(); },
lineStart: function() { stream.lineStart(); },
lineEnd: function() { stream.lineEnd(); },
polygonStart: function() { stream.polygonStart(); },
polygonEnd: function() { stream.polygonEnd(); }
};
}
});
}
function load(tile, proj) {
var g = tile.element = ms.svg("g");
var tileProj = proj(tile);
tile.features = [];
function update(data) {
var updated = [];
/* Fetch the next batch of features, if so directed. */
if (data.next) tile.request = fetch(data.next.href, update);
if (geoJson.tile() && tileBackground) {
var tileSize = geoJson.map().tileSize();
d3.select(g.insertBefore(ms.svg("rect"), g.firstChild))
.attr("width", tileSize.x)
.attr("height", tileSize.x)
.attr("class", "tile-background");
}
draw(g, data, tileProj, updated, tile);
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 copyObject(source) {
var copy = {};
for (var property in source) {
copy[property] = source[property];
}
return copy;
}
function projectPoint(p, proj) {
proj(p.geometry.coordinates, p);
return p;
}
function projectPointsForMultiPoint(mp, proj) {
var length = mp.geometry.coordinates.length;
var points = [];
for (var i = 0; i < length; i++) {
var p = copyObject(mp);
proj(p.geometry.coordinates[i], p);
points.push(p);
}
return points;
}
function draw(g, data, tileProj, updated, tile) {
var proj = projection(tileProj.locationPoint);
var path = projectSpherical(tileProj);
var pathFeatures = [],
pointFeatures = [];
data.features.forEach(function(f) {
if (f.geometry.type === "Point")
pointFeatures.push(projectPoint(f, proj));
else if (f.geometry.type === "MultiPoint")
pointFeatures.push.apply(pointFeatures, projectPointsForMultiPoint(f, proj));
else
pathFeatures.push(f);
});
var pathUpdate = d3.select(g)
.selectAll("path")
.data(pathFeatures)
.enter()
.append("path")
.attr("d", function(f) { return path(f); });
if (updated)
pathUpdate.each(function(f) { updated.push({ element: this, data: f }); });
var initialScale = "";
if (scale == "fixed") {
tile.scale = geoJson.map().zoom();
initialScale = "scale(" + Math.pow(2, tile.zoom - (tile.scale = geoJson.map().zoom())) + ")";
// console.log("setting initialScale to " + initialScale);
}
else if (scale == "relative") {
if(! zoomWhenLoaded) zoomWhenLoaded = tile.zoom;
tile.scale = geoJson.map().zoom();
initialScale = "scale(" + Math.pow(.5, zoomWhenLoaded - tile.zoom) + ")";
}
var pointUpdate = d3.select(g)
.selectAll("circle")
.data(pointFeatures)
.enter()
.append("circle")
.attr("transform", function(f) {
return "translate(" + f.x + "," + f.y + ")" + initialScale;
})
.attr("r", pointRadius);
if (updated)
pointUpdate.each(function(f) { updated.push({ element: this, data: f }); });
if (selection) {
pathUpdate.push.apply(pathUpdate, pointUpdate);
selection(pathUpdate);
}
}
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) + ")";
console.log("tile.zoom = " + tile.zoom + ", zoom = " + zoom + ", scale = " + k);
i = -1;
n = (features = tile.features).length;
while (++i < n) rescale((feature = features[i]).data, feature.element, k);
tile.scale = zoom;
}
}
}
// else if(scale == "relative") {
// // console.log("moving");
// 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, feature.element, k);
// tile.scale = zoom;
// }
// }
// }
}
geoJson.tileBackground = function(x) {
if (!arguments.length) return tileBackground;
tileBackground = x;
return geoJson;
};
geoJson.selection = function(x) {
if (!arguments.length) return selection;
selection = x;
return geoJson.reshow();
};
geoJson.url = function(x) {
if (!arguments.length) return url;
url = typeof x == "string" && /{.}/.test(x) ? ms.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");
if (selection) {
var s = d3.select(tile.element).selectAll("path");
s.push.apply(s, d3.select(tile.element).selectAll("circle"));
selection(s);
}
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;
};
ms.topoJson = function(fetch) {
if (!arguments.length) fetch = ms.queue.json;
var classify,
staticTopology;
function groupFeatures(features) {
if (!classify)
return features;
var classIndices = {};
var groupedFeatures = [];
features.forEach(function(f) {
var c = classify(f);
var index = classIndices[c];
if (index === undefined) {
index = groupedFeatures.push([]) - 1;
classIndices[c] = index;
}
groupedFeatures[index].push(f);
});
return groupedFeatures.map(function(g) {
return {
type: 'GeometryCollection',
geometries: g
};
});
}
var topologyFeatures = function(topology) {
function convert(topology, object, layer, features) {
var featureOrCollection = topojson.feature(topology, object),
layerFeatures;
if (featureOrCollection.type === "FeatureCollection") {
layerFeatures = featureOrCollection.features;
} else {
layerFeatures = [featureOrCollection];
}
layerFeatures.forEach(function(f) {
f.properties.layer = layer;
});
features.push.apply(features, layerFeatures);
}
var features = [];
for (var o in topology.objects) {
convert(topology, topology.objects[o], o, features);
}
features = groupFeatures(features);
return features;
};
var topoToGeo = function(url, callback) {
return fetch(url, function(topology) {
callback({
type: "FeatureCollection",
features: topologyFeatures(topology)
});
});
};
var topoJson = ms.geoJson(topoToGeo);
topoJson.topologyFeatures = function(x) {
if (!arguments.length) return topologyFeatures;
topologyFeatures = x;
return topoJson;
};
topoJson.classify = function(x) {
if (!arguments.length) return classify;
classify = x;
return topoJson;
};
topoJson.staticTopology = function(x) {
if (!arguments.length) return staticTopology;
staticTopology = x;
return topoJson.features(staticTopology ? topologyFeatures(staticTopology) : null);
};
return topoJson;
};
ms.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);
if (zoom === "mouse")
map.zoomBy(z, map.mouse(e));
else
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;
};
ms.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;
};
ms.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 *= 0.001;
}
/* 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;
};
ms.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;
};
ms.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);
if (location.hash)
hashchange();
else
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;
};
ms.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 = ms.map.locationCoordinate(locations[t0.identifier]),
c1 = ms.map.locationCoordinate(locations[t1.identifier]),
c2 = {row: (c0.row + c1.row) / 2, column: (c0.column + c1.column) / 2, zoom: 0},
l2 = ms.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.
ms.interact = function() {
var interact = {},
drag = ms.drag(),
wheel = ms.wheel(),
dblclick = ms.dblclick(),
touch = ms.touch(),
arrow = ms.arrow();
interact.map = function(x) {
drag.map(x);
wheel.map(x);
dblclick.map(x);
touch.map(x);
arrow.map(x);
return interact;
};
return interact;
};
ms.compass = function() {
var compass = {},
g = ms.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 = ms.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() {
if (x)
this.setAttribute("class", "active");
else
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 * 0.7,
z = r * 0.2,
g = ms.svg("g"),
dir = g.appendChild(ms.svg("path")),
chv = g.appendChild(ms.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 * 0.4,
y = x / 2,
g = ms.svg("g"),
back = g.appendChild(ms.svg("path")),
dire = g.appendChild(ms.svg("path")),
chev = g.appendChild(ms.svg("path")),
fore = g.appendChild(ms.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 * 0.2,
y = r * 0.4,
g = ms.svg("g"),
back = g.appendChild(ms.svg("rect")),
chev = g.appendChild(ms.svg("path"));
back.setAttribute("pointer-events", "all");
back.setAttribute("fill", "none");
back.setAttribute("x", -y);
back.setAttribute("y", -0.75 * 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) {
if (i == map.zoom())
ticks[i].setAttribute("class", "active");
else
ticks[i].removeAttribute("class");
}
}
function draw() {
while (g.lastChild) g.removeChild(g.lastChild);
g.appendChild(dragRect);
if (panStyle != "none") {
panContainer = g.appendChild(ms.svg("g"));
panContainer.setAttribute("class", "pan");
var back = panContainer.appendChild(ms.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(ms.svg("circle"));
fore.setAttribute("fill", "none");
fore.setAttribute("class", "fore");
fore.setAttribute("r", r);
} else {
panContainer = null;
}
if (zoomStyle != "none") {
zoomContainer = g.appendChild(ms.svg("g"));
zoomContainer.setAttribute("class", "zoom");
var j = -0.5;
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 + 0.75) * r * 0.4) + ")");
}
}
var p = panStyle == "none" ? 0.4 : 2;
zoomContainer.setAttribute("transform", "translate(0," + r * (/^top-/.test(position) ? (p + (j + 0.5) * 0.4) : -p) + ")");
zoomContainer.appendChild(zoom(+1)).setAttribute("transform", "translate(0," + (-(j + 0.5) * r * 0.4) + ")");
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.svgContainer();
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;
};
ms.grid = function() {
var grid = {},
map,
g = ms.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(ms.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(ms.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.svgContainer().appendChild(g);
map.dispatch({type: "move"});
}
return grid;
};
return grid;
};
ms.attribution = function(html) {
var attribution = {},
map,
container = document.createElement("div");
container.setAttribute("class", "mapsense-attribution");
attribution.container = function() {
return container;
};
attribution.html = function(x) {
if (!arguments.length) return container.innerHTML;
container.innerHTML = x;
return attribution;
};
attribution.map = function(x) {
if (!arguments.length) return map;
if (map) {
if (map === x) {
container.parentNode.appendChild(container);
return attribution;
}
container.parentNode.removeChild(container);
}
map = x;
if (map) {
map.relativeContainer().appendChild(container);
}
return attribution;
};
return attribution.html(html);
};
ms.basemap = function() {
var basemap = ms.topoJson();
var attribution = ms.attribution('<a target="_blank" href="https://developer.mapsense.co/tileViewer/?tileset=mapsense.earth">©Mapsense ©OpenStreetMap</a>');
var url = "https://{S}-api.mapsense.co/universes/mapsense.earth/{Z}/{X}/{Y}.topojson?s=10&ringSpan=8";
var apiKey;
var style;
function urlWithKey() {
return ms.url(url + "&api-key=" + apiKey)
.hosts(["a", "b", "c", "d"]);
}
var __map__ = basemap.map;
basemap.map = function(x) {
var result = __map__.apply(basemap, arguments);
if (arguments.length)
attribution.map(x);
return result;
};
var __url__ = basemap.url;
basemap.url = function(x) {
if (!arguments.length) return url;
url = x;
__url__.call(basemap, urlWithKey());
return basemap;
};
basemap.apiKey = function(x) {
if (!arguments.length) return apiKey;
apiKey = x;
__url__.call(basemap, urlWithKey());
return basemap;
};
basemap.style = function(x) {
if (!arguments.length) return style;
if (style)
attribution.container().classList.remove(style);
style = x;
basemap.selection(function(s) {
var styleClass = style ? "mapsense-" + style : "";
var zoomClass = "_" + Math.floor(basemap.map().zoom());
s.attr("class", function(feature) {
var classes = [ styleClass, zoomClass ];
if (feature.properties) {
if (feature.properties.layer)
classes.push(feature.properties.layer);
if (feature.properties.sub_layer)
classes.push(feature.properties.sub_layer);
}
return classes.join(" ");
});
});
if (style)
attribution.container().classList.add(style);
return basemap;
};
basemap.on("load", function(e) {
var g = e.tile.element;
var tileBackground = g.querySelector(".tile-background");
if (tileBackground && style)
tileBackground.classList.add("mapsense-" + style);
});
basemap.style("light");
basemap.tileBackground(true);
basemap.clip(true);
return basemap;
};
ms.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);
if (v == null) {
if (x.name.local)
o.removeAttributeNS(x.name.space, x.name.local);
else
o.removeAttribute(x.name);
}
else {
if (x.name.local)
o.setAttributeNS(x.name.space, x.name.local, v);
else
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);
if (v == null)
o.style.removeProperty(x.name);
else
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(ms.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;
};
if (typeof define === "function" && define.amd)
define(mapsense);
else if (typeof module === "object" && module.exports)
module.exports = mapsense;
this.mapsense = mapsense;
})();
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