/// <summary>
/// 二炮阵地方位计算中由两点的空间直角坐标求解方位角
/// </summary>
/// <param name="pntA">起点空间直角坐标</param>
/// <param name="pntB">末点空间直角坐标</param>
/// <param name="a">参考椭球长半轴</param>
/// <param name="f">参考椭球扁率倒数</param>
/// <returns>两点点的大地方位角</returns>
public static double Missile_XYZ_A(SpatialRectCoordinate pntA, SpatialRectCoordinate pntB, double a, double f)
{
double B, L, H;
XYZ_BLH(pntA.X, pntA.Y, pntA.Z, out B, out L, out H, a, f);
B = B * CoordConsts.PI / 180;
L = L * CoordConsts.PI / 180;
double Dx, Dy, Dz;
Dx = pntB.X - pntA.X;
Dy = pntB.Y - pntA.Y;
Dz = pntB.Z - pntA.Z;
double tempX, tempY;
tempX = -Math.Sin(B) * Math.Cos(L) * Dx - Math.Sin(B) * Math.Sin(L) * Dy + Math.Cos(B) * Dz;
tempY = -Math.Sin(L) * Dx + Math.Cos(L) * Dy;
double A = Math.Atan(tempY / tempX);
if (tempX > 0 && tempY < 0)
{
A += 2 * CoordConsts.PI;
}
if (tempX < 0)
{
A += CoordConsts.PI;
}
return(A * 180 / CoordConsts.PI);
}
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 H, double a, double f)
: this(B, L, a, f)
{
geodeticCoord = new GeodeticCoordinate(B, L, 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;
}
/// <summary>
/// 坐标转换
/// </summary>
/// <param name="xyzOld">旧坐标</param>
/// <param name="xyzNew">新坐标</param>
/// <param name="param">转换参数</param>
public static void CoordinateTransform(double[] xyzOld, double[] xyzNew, TransformParameters param)
{
if (xyzNew.Length != 3 || xyzOld.Length != 3)
{
throw new Exception("坐标维数错误，必须为3");
}
SpatialRectCoordinate p1 = new SpatialRectCoordinate(xyzOld[0], xyzOld[1], xyzOld[2]);
SpatialRectCoordinate p2 = CoordinateTransform(p1, param);
xyzNew[0] = p2.X;
xyzNew[1] = p2.Y;
xyzNew[2] = p2.Z;
}
/// <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));
}
/// <summary>
/// 添加
/// </summary>
/// <param name="XYZ"></param>
public void Add(SpatialRectCoordinate XYZ)
{
GeoPoint point = new GeoPoint(XYZ);
this.Add(point);
}
public GeoPoint(SpatialRectCoordinate XYZ)
: this(XYZ, Default_a, Default_f)
{
}
public GeoPoint(SpatialRectCoordinate XYZ, ReferenceEllipsoid e)
: this(XYZ, e.a, e.f)
{
}