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Comment only. A bit of documentation for distVincenty.

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@7973 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2008-09-06 18:53:42 +00:00
parent 29cdbe686d
commit d0ffc2b022
1 changed files with 6 additions and 1 deletions
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lib/OpenLayers/Util.js
+6 -1
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@@ -796,13 +796,18 @@ OpenLayers.Util.rad = function(x) {return x*Math.PI/180;};
/** /**
* Function: distVincenty * Function: distVincenty
* Given two objects representing points with geographic coordinates, this
* calculates the distance between those points on the surface of an
* ellipsoid.
* *
* Parameters: * Parameters:
* p1 - {<OpenLayers.LonLat>} (or any object with both .lat, .lon properties) * p1 - {<OpenLayers.LonLat>} (or any object with both .lat, .lon properties)
* p2 - {<OpenLayers.LonLat>} (or any object with both .lat, .lon properties) * p2 - {<OpenLayers.LonLat>} (or any object with both .lat, .lon properties)
* *
* Returns: * Returns:
* {Float} * {Float} The distance (in km) between the two input points as measured on an
* ellipsoid. Note that the input point objects must be in geographic
* coordinates (decimal degrees) and the return distance is in kilometers.
*/ */
OpenLayers.Util.distVincenty=function(p1, p2) { OpenLayers.Util.distVincenty=function(p1, p2) {
var a = 6378137, b = 6356752.3142, f = 1/298.257223563; var a = 6378137, b = 6356752.3142, f = 1/298.257223563;