diff options
Diffstat (limited to 'extlib/leaflet/src/geo/projection/Projection.SphericalMercator.js')
| -rw-r--r-- | extlib/leaflet/src/geo/projection/Projection.SphericalMercator.js | 23 |
1 files changed, 23 insertions, 0 deletions
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);
+ }
+};
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