Drawing a circle Google Static Maps

Question

I have a Google Maps Circle drawn on v3 api. When the user has plotted there circle (or polygon if they choose), they can save the data to the server. If the user has picked

Answer 1

Sharing my C# version

private string GMapCircle(double lat, double lng, double rad, int detail = 8)
{
    const string uri = "https://maps.googleapis.com/maps/api/staticmap?";
    var staticMapSrc = "center=" + lat + "," + lng;
    staticMapSrc += "&zoom=16";
    staticMapSrc += "&maptype=satellite";
    staticMapSrc += "&key=[YOURKEYHERE]";
    staticMapSrc += "&size=640x426";
    staticMapSrc += "&path=color:0xff0000ff:weight:1";

    const int r = 6371;
    const double pi = Math.PI;

    var latAux = (lat * pi) / 180;
    var longAux = (lng * pi) / 180;
    var d = (rad / 1000) / r;

    var i = 0;

    if (rad > 0)
    {
        for (i = 0; i <= 360; i += detail)
        {
            var brng = i * pi / 180;

            var pLat = Math.Asin(Math.Sin(latAux) * Math.Cos(d) + Math.Cos(latAux) * Math.Sin(d) * Math.Cos(brng));
            var pLng = ((longAux + Math.Atan2(Math.Sin(brng) * Math.Sin(d) * Math.Cos(latAux), Math.Cos(d) - Math.Sin(latAux) * Math.Sin(pLat))) * 180) / pi;
            pLat = (pLat * 180) / pi;

            staticMapSrc += "|" + pLat + "," + pLng;
        }
    }
    else
    {
        //TODO - Add marker
    }

    return uri + staticMapSrc;
}