Nodejs Degree to Radian Convert toRad()

Method Source Code

Number.prototype.toRad = function() { 
   return this * Math.PI / 180; 
};

Number.prototype.toDeg = function() { 
   return this * 180 / Math.PI; 
};


global.getPointAtDistance = function(lat, lon, brng, dist) {
  dist = dist / 6371000;/*from   w w w  .j  ava2s. c om*/
  brng = brng.toRad();
  var lat1 = lat.toRad(), lon1 = lon.toRad();
  var lat2 = Math.asin(Math.sin(lat1) * Math.cos(dist) + 
                       Math.cos(lat1) * Math.sin(dist) * Math.cos(brng));
  var lon2 = lon1 + Math.atan2(Math.sin(brng) * Math.sin(dist) *
                               Math.cos(lat1), 
                               Math.cos(dist) - Math.sin(lat1) *
                               Math.sin(lat2));
  if (isNaN(lat2) || isNaN(lon2)) return null;
  return [lat2.toDeg(), lon2.toDeg()];
};

Related

1. radians(degrees)

   Math.radians = function(degrees){
     return degrees * Math.PI / 180;
   };
   

2. degToRad(degrees)

   Math.degToRad = function(degrees){
     return degrees * Math.PI / 180;
   };
   

3. toRad()

   Number.prototype.toRad = function() {
     return this * Math.PI / 180;
   

4. toRad()

   Number.prototype.toRad = function() {
     return this * Math.PI / 180;
   Number.prototype.toDeg = function() {
     return this * 180 / Math.PI;
   

5. toRad()

   Number.prototype.toRad = function() {
     return this * Math.PI / 180;
   };
   Number.prototype.toDegree = function() {
     return this / Math.PI * 180;
   };
   

6. toRad()

   Number.prototype.toRad = function() {
       return this * Math.PI / 180;
   };
   

7. toRad()

   Number.prototype.toRad = function() {
     return (this / 180) * Math.PI;
   };
   

8. toRad() // convert degrees to radians

   Number.prototype.toRad = function() {  
     return this * Math.PI / 180;
   

9. toRadians()

   Number.prototype.toRadians = function() {
       return (this / 360) * 2 * Math.PI;