Google Maps Polyline: calculate endpoint from original point

I want to draw a polyline using Google Maps.

I have read the API and did some research, but i am still left with a fundamental question.

Information:

lat: 63.43243500
lon: 10.37045667
angle: 230 degrees (0 = north)

How can i make a polyline that is 60 meters lon开发者_如何学Gog that originates from the original lat / lon with a angle of 230 degrees?

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You need to calculate the endpoint of the line in (lat,lon). This can be done using the calculateOffset function in the google.maps.geometry.spherical namespace. It has three required parameters: the starting lat/lng point, the distance to travel, and the heading angle.

Here's an example for your situation:

var startLL = new google.maps.LatLng(63.43243500,10.37045667);
var endLL = new google.maps.geometry.spherical.computeOffset(startLL, 60, 230);

From the Polyline example, you can create a Polyline from these points as:

var coordinates = [startLL, endLL];
var path = new google.maps.Polyline({
  path: coordinates,
  strokeColor: "#FF0000",
  strokeOpacity: 1.0,
  strokeWeight: 2
});

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Update: You also need to make sure that you include the geometry library, which is not included by default. Following the instructions here, you need to change your bootstrap request to:

http://maps.google.com/maps/api/js?libraries=geometry&sensor=false