42 lines
1.4 KiB
JavaScript
42 lines
1.4 KiB
JavaScript
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/*
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* L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
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*/
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L.LatLngBounds = L.Class.extend({
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initialize: function(southWest, northEast) { // (LatLng, LatLng) or (LatLng[])
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var latlngs = (southWest instanceof Array ? southWest : [southWest, northEast]);
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for (var i = 0, len = latlngs.length; i < len; i++) {
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this.extend(latlngs[i]);
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}
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},
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// extend the bounds to contain the given point
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extend: function(/*LatLng*/ latlng) {
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if (!this.southWest && !this.northEast) {
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this.southWest = new L.LatLng(latlng.lat, latlng.lng);
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this.northEast = new L.LatLng(latlng.lat, latlng.lng);
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} else {
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this.southWest.lat = Math.min(latlng.lat, this.southWest.lat);
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this.southWest.lng = Math.min(latlng.lng, this.southWest.lng);
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this.northEast.lat = Math.max(latlng.lat, this.northEast.lat);
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this.northEast.lng = Math.max(latlng.lng, this.northEast.lng);
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}
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},
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getCenter: function() /*-> LatLng*/ {
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return new L.LatLng(
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(this.southWest.lat + this.northEast.lat) / 2,
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(this.southWest.lng + this.northEast.lng) / 2);
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},
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contains: function(/*LatLngBounds*/ bounds) /*-> Boolean*/ {
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var sw = this.southWest,
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ne = this.northEast,
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sw2 = bounds.southWest,
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ne2 = bounds.northEast;
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return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
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(sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
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}
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});
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//TODO International date line?
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