public GeoPoint(GaussCoordinate xyh, double a, double f)
{
try
{
//读取高斯平面坐标值，如果是未赋值对象则产生异常
double x = xyh.x;
double y = xyh.y;
ellipsoid = new ReferenceEllipsoid(a, f);
gaussCoord = xyh;
double B, L;
Geodetic.xy_BL(x, y, out B, out L, xyh.BeltWidth, 0, ellipsoid.a, ellipsoid.f);
geodeticCoord = new GeodeticCoordinate(B, L);
dimension = 2;
try
{
//如果存在高程异常和正常高，则按此式计算大地高
double h = xyh.h;
if (!dHlIsNull)
{
geodeticCoord.H = h + dH;
double X, Y, Z;
Geodetic.BLH_XYZ(B, L, h + dH, out X, out Y, out Z, ellipsoid.a, ellipsoid.f);
spatialCoord = new SpatialRectCoordinate(X, Y, Z);
dimension = 3;
}
}
catch { }
}
catch { }
}
public GeoPoint(SpatialRectCoordinate XYZ, double a, double f)
{
try
{
//读取空间直角坐标值，如果未赋值则产生异常
double X = XYZ.X;
double Y = XYZ.Y;
double Z = XYZ.Z;
ellipsoid = new ReferenceEllipsoid(a, f);
spatialCoord = XYZ;
double B, L, H;
Geodetic.XYZ_BLH(X, Y, Z, out B, out L, out H, ellipsoid.a, ellipsoid.f);
geodeticCoord = new GeodeticCoordinate(B, L, H);
double x, y;
Geodetic.BL_xy(geodeticCoord.B, geodeticCoord.L, out x, out y, ellipsoid.a, ellipsoid.f);
gaussCoord = new GaussCoordinate(x, y);
if (!dHlIsNull)
{
gaussCoord.h = H - dH;
}
dimension = 3;
}
catch { }
}
public GeoPoint(GeodeticCoordinate BLH, double a, double f)
{
try
{
//获取大地坐标，如果赋的值是空对象则会产生异常
double B = BLH.B;
double L = BLH.L;
geodeticCoord = BLH;
ellipsoid = new ReferenceEllipsoid(a, f);
double x, y;
Geodetic.BL_xy(B, L, out x, out y, ellipsoid.a, ellipsoid.f);
gaussCoord = new GaussCoordinate(x, y);
dimension = 2;
try
{
//获取大地高，如果没有大地高，则产生异常，只取二维坐标
double H = BLH.H;
double X, Y, Z;
Geodetic.BLH_XYZ(B, L, H, out X, out Y, out Z, ellipsoid.a, ellipsoid.f);
spatialCoord = new SpatialRectCoordinate(X, Y, Z);
dimension = 3;
}
catch { }
}
catch { }
}
public GeoPoint(double B, double L, double a, double f)
{
ellipsoid = new ReferenceEllipsoid(a, f);
geodeticCoord = new GeodeticCoordinate(B, L);
double x, y;
Geodetic.BL_xy(B, L, out x, out y, ellipsoid.a, ellipsoid.f);
gaussCoord = new GaussCoordinate(x, y);
dimension = 2;
}
/// <summary>
/// 布尔莎七参数模型坐标转换，从大地坐标到大地坐标
/// </summary>
/// <param name="pntBLH"></param>
/// <param name="eOld"></param>
/// <param name="eNew"></param>
/// <param name="param"></param>
/// <returns></returns>
public static GeodeticCoordinate CoordinateTransform(GeodeticCoordinate pntBLH, ReferenceEllipsoid eOld, ReferenceEllipsoid eNew, TransformParameters param)
{
double X, Y, Z;
BLH_XYZ(pntBLH.B, pntBLH.L, pntBLH.H, out X, out Y, out Z, eOld.a, eOld.f);
SpatialRectCoordinate s = CoordinateTransform(new SpatialRectCoordinate(X, Y, Z), param);
double B, L, H;
XYZ_BLH(s.X, s.Y, s.Z, out B, out L, out H, eNew.a, eNew.f);
return(new GeodeticCoordinate(B, L, H));
}
public GeoPoint(double B, double L, double H, ReferenceEllipsoid e)
: this(B, L, H, e.a, e.f)
{
}
public GeoPoint(GaussCoordinate xyh, ReferenceEllipsoid e)
: this(xyh, e.a, e.f)
{
}
public GeoPoint(SpatialRectCoordinate XYZ, ReferenceEllipsoid e)
: this(XYZ, e.a, e.f)
{
}
public GeoPoint(GeodeticCoordinate BLH, ReferenceEllipsoid e)
: this(BLH, e.a, e.f)
{
}
