Created
October 17, 2022 18:34
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Calculate distance between to points using Haversine formula
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| var rad = function(x) { | |
| return x * Math.PI / 180; | |
| }; | |
| var getDistance = function(p1, p2) { | |
| var R = 6378137; // Earth’s mean radius in meter | |
| var dLat = rad(p2.lat() - p1.lat()); | |
| var dLong = rad(p2.lng() - p1.lng()); | |
| var a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + | |
| Math.cos(rad(p1.lat())) * Math.cos(rad(p2.lat())) * | |
| Math.sin(dLong / 2) * Math.sin(dLong / 2); | |
| var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); | |
| var d = R * c; | |
| return d; // returns the distance in meter | |
| }; |
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