10 files changed, 238 insertions, 0 deletions
diff --git a/extlib/leaflet/src/geo/LatLng.js b/extlib/leaflet/src/geo/LatLng.js
new file mode 100644
index 00000000..fb916547
--- /dev/null
+++ b/extlib/leaflet/src/geo/LatLng.js
@@ -0,0 +1,35 @@
+/*
+	CM.LatLng represents a geographical point with latitude and longtitude coordinates.
+*/
+
+L.LatLng = function(/*Number*/ lat, /*Number*/ lng, /*Boolean*/ noWrap) {
+	if (noWrap !== true) {
+		lat = Math.max(Math.min(lat, 90), -90);					// clamp latitude into -90..90
+		lng = (lng + 180) % 360 + (lng < -180 ? 180 : -180);	// wrap longtitude into -180..180
+	}
+	
+	//TODO change to lat() & lng()
+	this.lat = lat;
+	this.lng = lng;
+};
+	
+L.Util.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(/*LatLng*/ obj) {
+		if (!(obj instanceof L.LatLng)) { return false; }
+		
+		var margin = Math.max(Math.abs(this.lat - obj.lat), Math.abs(this.lng - obj.lng));
+		return margin <= L.LatLng.MAX_MARGIN;
+	},
+	
+	toString: function() {
+		return 'LatLng(' + 
+				L.Util.formatNum(this.lat) + ', ' + 
+				L.Util.formatNum(this.lng) + ')';
+	}
+};
+\ No newline at end of file
diff --git a/extlib/leaflet/src/geo/LatLngBounds.js b/extlib/leaflet/src/geo/LatLngBounds.js
new file mode 100644
index 00000000..c4e70ec3
--- /dev/null
+++ b/extlib/leaflet/src/geo/LatLngBounds.js
@@ -0,0 +1,62 @@
+/*
+ * L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
+ */
+
+L.LatLngBounds = L.Class.extend({
+	initialize: function(southWest, northEast) {	// (LatLng, LatLng) or (LatLng[])
+		if (!southWest) return;
+		var latlngs = (southWest instanceof Array ? southWest : [southWest, northEast]);
+		for (var i = 0, len = latlngs.length; i < len; i++) {
+			this.extend(latlngs[i]);
+		}
+	},
+	
+	// extend the bounds to contain the given point
+	extend: function(/*LatLng*/ latlng) {
+		if (!this._southWest && !this._northEast) {
+			this._southWest = new L.LatLng(latlng.lat, latlng.lng);
+			this._northEast = new L.LatLng(latlng.lat, latlng.lng);
+		} else {
+			this._southWest.lat = Math.min(latlng.lat, this._southWest.lat);
+			this._southWest.lng = Math.min(latlng.lng, this._southWest.lng);
+			this._northEast.lat = Math.max(latlng.lat, this._northEast.lat);
+			this._northEast.lng = Math.max(latlng.lng, this._northEast.lng);
+		}
+	},
+	
+	getCenter: function() /*-> LatLng*/ {
+		return new L.LatLng(
+				(this._southWest.lat + this._northEast.lat) / 2, 
+				(this._southWest.lng + this._northEast.lng) / 2);
+	},
+	
+	getSouthWest: function() { return this._southWest; },
+	
+	getNorthEast: function() { return this._northEast; },
+	
+	getNorthWest: function() {
+		return new L.LatLng(this._northEast.lat, this._southWest.lng);
+	},
+	
+	getSouthEast: function() {
+		return new L.LatLng(this._southWest.lat, this._northEast.lng);
+	},
+	
+	contains: function(/*LatLngBounds or LatLng*/ obj) /*-> Boolean*/ {
+		var sw = this._southWest,
+			ne = this._northEast,
+			sw2, ne2;
+		
+		if (obj instanceof L.LatLngBounds) {
+			sw2 = obj.getSouthWest();
+			ne2 = obj.getNorthEast();
+		} else {
+			sw2 = ne2 = obj;
+		}
+		
+		return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
+				(sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
+	}
+});
+
+//TODO International date line?
+\ No newline at end of file
diff --git a/extlib/leaflet/src/geo/crs/CRS.EPSG3395.js b/extlib/leaflet/src/geo/crs/CRS.EPSG3395.js
new file mode 100644
index 00000000..426dc73c
--- /dev/null
+++ b/extlib/leaflet/src/geo/crs/CRS.EPSG3395.js
@@ -0,0 +1,13 @@
+
+L.CRS.EPSG3395 = L.Util.extend({}, L.CRS, {
+	code: 'EPSG:3395',
+	
+	projection: L.Projection.Mercator,
+	transformation: (function() { 
+		var m = L.Projection.Mercator,
+			r = m.R_MAJOR,
+			r2 = m.R_MINOR;
+		
+		return new L.Transformation(0.5/(Math.PI * r), 0.5, -0.5/(Math.PI * r2), 0.5);
+	})()
+});
+\ No newline at end of file
diff --git a/extlib/leaflet/src/geo/crs/CRS.EPSG3857.js b/extlib/leaflet/src/geo/crs/CRS.EPSG3857.js
new file mode 100644
index 00000000..cbdbd03a
--- /dev/null
+++ b/extlib/leaflet/src/geo/crs/CRS.EPSG3857.js
@@ -0,0 +1,17 @@
+
+L.CRS.EPSG3857 = L.Util.extend({}, L.CRS, {
+	code: 'EPSG:3857',
+	
+	projection: L.Projection.SphericalMercator,
+	transformation: new L.Transformation(0.5/Math.PI, 0.5, -0.5/Math.PI, 0.5),
+	
+	project: function(/*LatLng*/ latlng)/*-> Point*/ {
+		var projectedPoint = this.projection.project(latlng),
+			earthRadius = 6378137;
+		return projectedPoint.multiplyBy(earthRadius);
+	}
+});
+
+L.CRS.EPSG900913 = L.Util.extend({}, L.CRS.EPSG3857, {
+	code: 'EPSG:900913'
+});
+\ No newline at end of file
diff --git a/extlib/leaflet/src/geo/crs/CRS.EPSG4326.js b/extlib/leaflet/src/geo/crs/CRS.EPSG4326.js
new file mode 100644
index 00000000..1550718d
--- /dev/null
+++ b/extlib/leaflet/src/geo/crs/CRS.EPSG4326.js
@@ -0,0 +1,7 @@
+
+L.CRS.EPSG4326 = L.Util.extend({}, L.CRS, {
+	code: 'EPSG:4326',
+	
+	projection: L.Projection.LonLat,
+	transformation: new L.Transformation(1/360, 0.5, -1/360, 0.5)
+});
+\ No newline at end of file
diff --git a/extlib/leaflet/src/geo/crs/CRS.js b/extlib/leaflet/src/geo/crs/CRS.js
new file mode 100644
index 00000000..2dc2aa8d
--- /dev/null
+++ b/extlib/leaflet/src/geo/crs/CRS.js
@@ -0,0 +1,17 @@
+
+L.CRS = {
+	latLngToPoint: function(/*LatLng*/ latlng, /*Number*/ scale)/*-> Point*/ {
+		var projectedPoint = this.projection.project(latlng);
+		return this.transformation._transform(projectedPoint, scale);
+	},
+	
+	pointToLatLng: function(/*Point*/ point, /*Number*/ scale, /*(optional) Boolean*/ unbounded)/*-> LatLng*/ {
+		var untransformedPoint = this.transformation.untransform(point, scale);
+		return this.projection.unproject(untransformedPoint, unbounded); 
+		//TODO get rid of 'unbounded' everywhere
+	},
+	
+	project: function(latlng) {
+		return this.projection.project(latlng);
+	}
+};
+\ No newline at end of file
diff --git a/extlib/leaflet/src/geo/projection/Projection.LonLat.js b/extlib/leaflet/src/geo/projection/Projection.LonLat.js
new file mode 100644
index 00000000..ece29717
--- /dev/null
+++ b/extlib/leaflet/src/geo/projection/Projection.LonLat.js
@@ -0,0 +1,10 @@
+
+L.Projection.LonLat = {
+	project: function(latlng) {
+		return new L.Point(latlng.lng, latlng.lat);
+	},
+	
+	unproject: function(point, unbounded) {
+		return new L.LatLng(point.y, point.x, unbounded);
+	}
+};
diff --git a/extlib/leaflet/src/geo/projection/Projection.Mercator.js b/extlib/leaflet/src/geo/projection/Projection.Mercator.js
new file mode 100644
index 00000000..9eafff18
--- /dev/null
+++ b/extlib/leaflet/src/geo/projection/Projection.Mercator.js
@@ -0,0 +1,49 @@
+
+L.Projection.Mercator = {
+	MAX_LATITUDE: 85.0840591556,
+	
+	R_MINOR: 6356752.3142,
+	R_MAJOR: 6378137,
+		
+	project: function(/*LatLng*/ latlng) /*-> Point*/ {
+		var d = L.LatLng.DEG_TO_RAD,
+			max = this.MAX_LATITUDE,
+			lat = Math.max(Math.min(max, latlng.lat), -max),
+			r = this.R_MAJOR,
+			x = latlng.lng * d * r,
+			y = lat * d,
+			tmp = this.R_MINOR / r,
+			eccent = Math.sqrt(1.0 - tmp * tmp),
+			con = eccent * Math.sin(y);
+			
+		con = Math.pow((1 - con)/(1 + con), eccent * 0.5);
+		
+		var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con;
+		y = -r * Math.log(ts);
+		
+		return new L.Point(x, y);
+	},
+	
+	unproject: function(/*Point*/ point, /*Boolean*/ unbounded) /*-> LatLng*/ {	
+		var d = L.LatLng.RAD_TO_DEG,
+			r = this.R_MAJOR,
+			lng = point.x * d / r,
+			tmp = this.R_MINOR / r,
+			eccent = Math.sqrt(1 - (tmp * tmp)),
+			ts = Math.exp(- point.y / r),
+			phi = Math.PI/2 - 2 * Math.atan(ts),
+			numIter = 15,
+			tol = 1e-7,
+			i = numIter,
+			dphi = 0.1,
+			con;
+		
+		while ((Math.abs(dphi) > tol) && (--i > 0)) {
+			con = eccent * Math.sin(phi);
+			dphi = Math.PI/2 - 2 * Math.atan(ts * Math.pow((1.0 - con)/(1.0 + con), 0.5 * eccent)) - phi;
+			phi += dphi;
+		}
+			
+		return new L.LatLng(phi * d, lng, unbounded);
+	}
+};
diff --git a/extlib/leaflet/src/geo/projection/Projection.SphericalMercator.js b/extlib/leaflet/src/geo/projection/Projection.SphericalMercator.js
new file mode 100644
index 00000000..be0532ff
--- /dev/null
+++ b/extlib/leaflet/src/geo/projection/Projection.SphericalMercator.js
@@ -0,0 +1,23 @@
+
+L.Projection.SphericalMercator = {
+	MAX_LATITUDE: 85.0511287798,
+		
+	project: function(/*LatLng*/ latlng) /*-> Point*/ {
+		var d = L.LatLng.DEG_TO_RAD,
+			max = this.MAX_LATITUDE,
+			lat = Math.max(Math.min(max, latlng.lat), -max),
+			x = latlng.lng * d,
+			y = lat * d;
+		y = Math.log(Math.tan(Math.PI/4 + y/2));
+		
+		return new L.Point(x, y);
+	},
+	
+	unproject: function(/*Point*/ point, /*Boolean*/ unbounded) /*-> LatLng*/ {	
+		var d = L.LatLng.RAD_TO_DEG,
+			lng = point.x * d,
+			lat = (2 * Math.atan(Math.exp(point.y)) - Math.PI/2) * d;
+			
+		return new L.LatLng(lat, lng, unbounded);
+	}
+};
diff --git a/extlib/leaflet/src/geo/projection/Projection.js b/extlib/leaflet/src/geo/projection/Projection.js
new file mode 100644
index 00000000..84316b30
--- /dev/null
+++ b/extlib/leaflet/src/geo/projection/Projection.js
@@ -0,0 +1,5 @@
+/*
+ * L.Projection contains various geographical projections used by CRS classes.
+ */
+
+L.Projection = {};