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<div class='header high'>
<h1>Code coverage report for <span class='entity'>src/geo/LatLng.js</span></h1>
<h2>
Statements: <span class='metric'>100% <small>(33 / 33)</small></span>
Branches: <span class='metric'>100% <small>(28 / 28)</small></span>
Functions: <span class='metric'>100% <small>(6 / 6)</small></span>
Lines: <span class='metric'>100% <small>(32 / 32)</small></span>
</h2>
<div class="path"><a href="../../index.html">All files</a> » <a href="index.html">src/geo/</a> » LatLng.js</div>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/*
* L.LatLng represents a geographical point with latitude and longitude coordinates.
*/
L.LatLng = function (rawLat, rawLng) { // (Number, Number)
var lat = parseFloat(rawLat),
lng = parseFloat(rawLng);
if (isNaN(lat) || isNaN(lng)) {
throw new Error('Invalid LatLng object: (' + rawLat + ', ' + rawLng + ')');
}
this.lat = lat;
this.lng = lng;
};
L.extend(L.LatLng, {
DEG_TO_RAD: Math.PI / 180,
RAD_TO_DEG: 180 / Math.PI,
MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check
});
L.LatLng.prototype = {
equals: function (obj) { // (LatLng) -> Boolean
if (!obj) { return false; }
obj = L.latLng(obj);
var margin = Math.max(
Math.abs(this.lat - obj.lat),
Math.abs(this.lng - obj.lng));
return margin <= L.LatLng.MAX_MARGIN;
},
toString: function (precision) { // (Number) -> String
return 'LatLng(' +
L.Util.formatNum(this.lat, precision) + ', ' +
L.Util.formatNum(this.lng, precision) + ')';
},
// Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula
// TODO move to projection code, LatLng shouldn't know about Earth
distanceTo: function (other) { // (LatLng) -> Number
other = L.latLng(other);
var R = 6378137, // earth radius in meters
d2r = L.LatLng.DEG_TO_RAD,
dLat = (other.lat - this.lat) * d2r,
dLon = (other.lng - this.lng) * d2r,
lat1 = this.lat * d2r,
lat2 = other.lat * d2r,
sin1 = Math.sin(dLat / 2),
sin2 = Math.sin(dLon / 2);
var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2);
return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
},
wrap: function (a, b) { // (Number, Number) -> LatLng
var lng = this.lng;
a = a || -180;
b = b || 180;
lng = (lng + b) % (b - a) + (lng < a || lng === b ? b : a);
return new L.LatLng(this.lat, lng);
}
};
L.latLng = function (a, b) { // (LatLng) or ([Number, Number]) or (Number, Number)
if (a instanceof L.LatLng) {
return a;
}
if (L.Util.isArray(a)) {
return new L.LatLng(a[0], a[1]);
}
if (a === undefined || a === null) {
return a;
}
if (typeof a === 'object' && 'lat' in a) {
return new L.LatLng(a.lat, 'lng' in a ? a.lng : a.lon);
}
return new L.LatLng(a, b);
};
</pre></td></tr>
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