private float MercX(float lon)
{
lon = (float)ExtensionClass.DegreeToRadian(lon);
float a = (256 / (float)Math.PI) * (float)Math.Pow(2, Zoom);
float b = lon + (float)Math.PI;
return(a * b);
}
private float MercY(float lat)
{
lat = (float)ExtensionClass.DegreeToRadian(lat);
var a = (256 / (float)Math.PI) * (float)Math.Pow(2, Zoom);
var b = (float)Math.Tan(Math.PI / 4 + lat / 2);
var c = (float)Math.PI - (float)Math.Log(b);
return(a * c);
}