/// <summary>
/// 转换操作。输入待转坐标，输出目标坐标。
/// </summary>
/// <param name="oldCoord">待转坐标，只取其数字部分，参考系取自属性本对象的TargetCrs属性 </param>
/// <returns></returns>
public override ICoordinate MatchedTrans(ICoordinate oldCoord)
{
IEllipsoid e = (TargetCrs.Datum as GeodeticDatum).Ellipsoid;
IGeodeticCoord geo = (IGeodeticCoord)oldCoord;
double x, y, z;
GeodeticUtils.GeodeticToXyzCoord(geo.Lon, geo.Lat, geo.Height, out x, out y, out z, e.SemiMajorAxis, e.InverseFlattening);
return(CoordinateFactory.CreateXyzCoord(x, y, z, oldCoord.Weight));
}
/// <summary>
/// 大地坐标转为空间直角坐标。
/// </summary>
/// <param name="ellipsoidCoord"></param>
/// <returns></returns>
public static XYZ GeoCoordToXyz(IGeodeticCoord ellipsoidCoord, Geo.Referencing.Ellipsoid el = null)
{
if (el == null)
{
el = Geo.Referencing.Ellipsoid.WGS84;
}
double lon = ellipsoidCoord.Lon;
double lat = ellipsoidCoord.Lat;
double height = ellipsoidCoord.Height;
double a = el.SemiMajorAxis;
double e = el.FirstEccentricity;
return(GeoCoordToXyz(lon, lat, height, a, e, ellipsoidCoord.Unit));
}
