/// <summary>
/// 两个坐标的角度
/// </summary>
/// <param name="me"></param>
/// <param name="other"></param>
/// <returns></returns>
public static double GetAngleDeg(LonLat me, LonLat other)
{
double latDifferDeg = (other.Lat - me.Lat);
double lonDifferDeg = (other.Lon - me.Lon);
return(GetAngleDeg(latDifferDeg, lonDifferDeg));
}
void gridLooper_Looping(Geo.Coordinates.LonLat lonlat)
{
var radius = AveRadiusOfEarch + HeightOnSphere;
var val = calculater.GetValue(maxOrder, lonlat, radius);
AddToTable(lonlat, val);
}
public LonLat GetLonLatFromScreenXy(System.Drawing.Point location, LonLat center, XY screenCenter, int zoom)
{
XY centerXy = GetMercatorXyFromLonLat(center);
XY mercator = GetMecatorXyFromScreenXy(location, centerXy, screenCenter, zoom);
LonLat lonLat = GetLonLatFromMercatorXy(mercator);
return(lonLat);
}
/// <summary>
/// 经纬度坐标转换为屏幕坐标。
/// </summary>
/// <param name="lonLat"></param>
/// <param name="center"></param>
/// <param name="screenSize"></param>
/// <param name="zoom"></param>
/// <returns></returns>
public XY GetScreenXyFromLonLat(LonLat lonLat, LonLat center, XY screenCenter, int zoom)
{
XY mecatorXy = GetMercatorXyFromLonLat(lonLat);
XY centerXy = GetMercatorXyFromLonLat(center);
XY pt = GetScreenPointFromMercatorXy(mecatorXy, centerXy, screenCenter, zoom);
return(pt);
}
/// <summary>
/// 空间直角坐标系到，站心坐标系的转换。
/// </summary>
/// <param name="vector">站心坐标系的目标向量</param>
/// <param name="lonlat">站心的大地坐标</param>
/// <param name="unit">当前输入的角度单位</param>
/// <returns></returns>
public static NEU XyzToNeu(XYZ vector, LonLat lonlat, AngleUnit unit = AngleUnit.Degree)
{
//double[][] trans = (GetGlobalToLocalCoordMatrix(lonlat));
//double[] result = MatrixUtil.GetMultiply(trans, vector.Array);
//XYZ xyz = XYZ.Parse(result);
NEU neu = XyzToNeu(vector, lonlat.Lat, lonlat.Lon, unit);
return(neu);
}
/// <summary>
/// 数值是否相等。
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public override bool Equals(object obj)
{
LonLat other = obj as LonLat;
if (other == null)
{
return(false);
}
return(this.Lon == other.Lon && this.Lat == other.Lat);
}
/// <summary>
/// 得到Google Tile 编号。
/// </summary>
/// <param name="lonLat"></param>
/// <returns></returns>
public XY LonLatToTileXy(LonLat lonLat, int zoom)
{
XY worldCoordinate = LonLatToMecatorXy(lonLat);
//像素坐标
double temp = Math.Pow(2, zoom);
XY pixelCoordinate = new XY(worldCoordinate.X * temp, worldCoordinate.Y * temp);
//瓦片坐标。
XY tileCoordinate = new XY(Math.Floor(pixelCoordinate.X / MERCATOR_RANGE), Math.Floor(pixelCoordinate.Y / MERCATOR_RANGE));
return(tileCoordinate);
}
/// <summary>
/// World Coordinate
/// </summary>
/// <param name="lonLat"></param>
/// <returns></returns>
public XY LonLatToMecatorXy(LonLat lonLat)
{
XY point = new XY();
XY origin = this.pixelOrigin;
point.X = origin.X + lonLat.Lon * this.pixelsPerLonDegree;
// NOTE(appleton): Truncating to 0.9999 effectively limits latitude to
// 89.189. This is about a third of a tile past the edge of the world tile.
double siny = Bound(Math.Sin(DegreesToRadians(lonLat.Lat)), -0.9999, 0.9999);
point.Y = origin.Y + 0.5 * Math.Log((1 + siny) / (1 - siny)) * -this.pixelsPerLonRadian;
return(point);
}
void gridLooper_Looping(Geo.Coordinates.LonLat lonlat)
{
//转换为日固坐标系
LonLat lonLatSE = lonlat.GetSeLonLat(this.CurrentHarmanicsData.Time.DateTime);
var radius = AveRadiusOfEarch + HeightOnSphere;
// var val = calculater.GetValue(maxOrder, lonlat, radius);
var val = calculater.GetValue(maxOrder, lonLatSE, radius);
AddToTable(lonlat, val);
}
/// <summary>
/// 经纬度转换到高斯坐标XY
/// </summary>
/// <param name="lonlat"></param>
/// <param name="beltWidth"></param>
/// <param name="Ellipsoid"></param>
/// <param name="unit"></param>
/// <param name="aveGeoHeight">投影面平均大地高</param>
/// <param name="YConst">横轴Y加常数</param>
/// <param name="orinalLonDeg">中央子午线，度小数</param>
/// <param name="isYWithBeltNum"></param>
/// <returns></returns>
public static XY LonLatToGaussXy(LonLat lonlat, double aveGeoHeight, int beltWidth, ref double orinalLonDeg, bool IsIndicateOriginLon, Ellipsoid Ellipsoid, double YConst = 500000, AngleUnit unit = AngleUnit.Degree, bool isYWithBeltNum = true)
{
double B = lonlat.Lat;
double L = lonlat.Lon;
double x;
double y;
//单位转换
L = AngularConvert.Convert(L, unit, AngleUnit.Degree);
B = AngularConvert.Convert(B, unit, AngleUnit.Degree);
Geo.Coordinates.GeodeticUtils.LonLatToGaussXy(L, B, aveGeoHeight, out x, out y, ref orinalLonDeg, IsIndicateOriginLon, beltWidth, YConst, isYWithBeltNum,
Ellipsoid.SemiMajorAxis, Ellipsoid.InverseFlattening);
return(new XY(x, y));
}
/// <summary>
/// 经纬度所标转化为墨卡托投影坐标。没有Y或经度方向大小限制。
/// </summary>
/// <param name="lonLat"></param>
/// <returns></returns>
public XY GetMercatorXyFromLonLat(LonLat lonLat)
{
if (lonLat.Lat > MaxLat)
{
lonLat.Lat = MaxLat;
}
if (lonLat.Lat < -MaxLat)
{
lonLat.Lat = -MaxLat;
}
XY xy = mecator.LonLatToMecatorXy(lonLat);
return(xy);
}
/// <summary>
/// 循环
/// </summary>
/// <param name="geoCoord"></param>
protected void OnLooping(Geo.Coordinates.LonLat geoCoord)
{
if (IsCancel)
{
return;
}
Looping?.Invoke(geoCoord);
//进度条控制
CurrentCount++;
if (IsLatFirst && CurrentCount % LatCount == 0)
{
PerformProcessStep();
}
else if (CurrentCount % LonCount == 0)
{
PerformProcessStep();
}
}
/// <summary>
/// 测试
/// </summary>
/// <param name="zoom"></param>
public void Test(int zoom)
{
LonLat lonLat = new LonLat(-87.6500523, 41.850033);
string latlngStr = "Chicago, IL" + "<br />" + "LatLng: " + lonLat.Lat + " , " + lonLat.Lon + "<br />";
MercatorProjection projection = new MercatorProjection();
//世界坐标（Mecator）
XY worldCoordinate = projection.LonLatToMecatorXy(lonLat);
string worldCoordStr = "World Coordinate: " + worldCoordinate.X + " , " + worldCoordinate.Y;
//像素坐标
XY pixelCoordinate = new XY(worldCoordinate.X * Math.Pow(2, zoom), worldCoordinate.Y * Math.Pow(2, zoom));
string pixelCoordStr = "<br />Pixel Coordinate: " + Math.Floor(pixelCoordinate.X) + " , " + Math.Floor(pixelCoordinate.Y);
//瓦片坐标。
XY tileCoordinate = new XY(Math.Floor(pixelCoordinate.X / MERCATOR_RANGE), Math.Floor(pixelCoordinate.Y / MERCATOR_RANGE));
string tileCoordStr = "<br />Tile Coordinate: " + tileCoordinate.X + " , " + tileCoordinate.Y + " at Zoom Level: " + zoom;
}
/// <summary>
/// 驾驶方向
/// </summary>
/// <param name="pre"></param>
/// <param name="now"></param>
/// <param name="next"></param>
/// <returns></returns>
public static DrivenDirection GetDrivenDirection(LonLat pre, LonLat now, LonLat next)
{
double deg1 = GetAngleDeg(pre, now);
double deg2 = GetAngleDeg(now, next);
double degree = deg2 - deg1;
//0<=degree<360
if (degree < 0)
{
degree += 360;
}
if (degree >= 360)
{
degree -= 360;
}
if (-D45 < degree && degree <= D45)
{
return(DrivenDirection.Ahead);
}
int i = 1;
if (D45 * (i) < degree && degree <= D45 * (i += 2))
{
return(DrivenDirection.Left);
}
if (D45 * (i) < degree && degree <= D45 * (i += 2))
{
return(DrivenDirection.Back);
}
if (D45 * (i) < degree && degree <= D45 * (i += 2))
{
return(DrivenDirection.Right);
}
if (D45 * (i) < degree && degree <= D45 * (i += 2))
{
return(DrivenDirection.Ahead);
}
return(DrivenDirection.Ahead);
}
/// <summary>
/// 由Google瓦片编号转换为Mercater坐标。
/// </summary>
/// <param name="tileXy"></param>
/// <param name="zoom"></param>
/// <returns></returns>
public XY GetMercatorXyFromGoogleTileNumber(XY tileXy, int zoom)
{
LonLat lonlat = mecator.TileXyToLonLat(tileXy, zoom);
return(new XY(lonlat.Lon, lonlat.Lat));
}
// const double PIPart8 = 0.39269908169872415480783042290994;
/// <summary>
/// 得到两个坐标点的相对方向。
/// 第二个相对于第一个。
/// </summary>
/// <param name="me"></param>
/// <param name="other"></param>
/// <returns></returns>
public static string GetDirectionString(LonLat me, LonLat other)
{
Direction dir = GetDirection(me, other);
return(GetDirectionString(dir));
}
public static double DistanceInMeter(LonLat start, LonLat end)
{
return(GeoDistance.GetDistanceInMeter(start, end));
//LonLat differ = (start - end);
//return (long)( Math.Sqrt(differ.Lat * differ.Lat + differ.Lon * differ.Lon) * 1.8 * 60);
}
/// <summary>
/// 采用贝塞尔大地算法计算大地线长。
/// </summary>
/// <param name="lonLat1"></param>
/// <param name="lonLat2"></param>
/// <returns></returns>
public static double GetDistanceInMeter(LonLat lonLat1, LonLat lonLat2)
{
double distance = GeodeticX.Geodetic.Bessel_BL_S(lonLat1.Lat, lonLat1.Lon, lonLat2.Lat, lonLat2.Lon, 6378137, 298.257223563);
return(distance);
}
/// <summary>
/// 由大地坐标计算大地线长
/// </summary>
/// <param name="longlatADeg"></param>
/// <param name="longlatBDeg"></param>
/// <param name="aveGeoHeight">平均大地高</param>
/// <param name="majorRadius"></param>
/// <param name="inverseFlat"></param>
/// <returns></returns>
public static double BesselGeodeticLine(LonLat longlatADeg, LonLat longlatBDeg, double aveGeoHeight = 0, double majorRadius = Ellipsoid.SemiMajorAxisOfCGCS2000, double inverseFlat = Ellipsoid.InverseFlatOfCGCS2000)
{
return(BesselGeodeticLine(longlatADeg.Lon, longlatADeg.Lat, longlatBDeg.Lon, longlatBDeg.Lat, majorRadius + aveGeoHeight, inverseFlat));
}
/// <summary>
/// 墨卡托投影坐标转换为经纬度坐标。没有Y或经度方向大小限制。
/// </summary>
/// <param name="xy"></param>
/// <returns></returns>
public LonLat GetLonLatFromMercatorXy(XY xy)
{
LonLat lonLat = mecator.MecatorXyToLonLat(xy);
return(lonLat);
}
/// <summary>
/// 计算贝塞尔大地方位角
/// </summary>
/// <param name="startXyz"></param>
/// <param name="toXyz"></param>
/// <returns></returns>
public static double BesselAzimuthAngle(LonLat startXyz, LonLat toXyz, double majorRadius = Ellipsoid.SemiMajorAxisOfCGCS2000, double inverseFlat = Ellipsoid.InverseFlatOfCGCS2000)
{
return(BesselAzimuthAngle(startXyz.Lon, startXyz.Lat, toXyz.Lon, toXyz.Lat, majorRadius, inverseFlat));
}
public System.Drawing.Point GetScreenPointFromLonLat(LonLat lonLat, int zoom)
{
XY xy = GetMercatorXyFromLonLat(lonLat);
return(GetScreenPointFromMercatorXy(xy, zoom));
}
/// <summary>
/// 屏幕坐标转换为经纬度坐标。
/// </summary>
/// <param name="location"></param>
/// <param name="center"></param>
/// <param name="screenSize"></param>
/// <param name="zoom"></param>
/// <returns></returns>
public LonLat GetLonLatFromScreenXy(System.Drawing.Point location, LonLat center, System.Drawing.Size screenSize, int zoom)
{
XY screenCenter = new XY(screenSize.Width / 2, screenSize.Height / 2);
return(GetLonLatFromScreenXy(location, center, screenCenter, zoom));
}
/// <summary>
/// 经纬度转换为Google瓦片编号。
/// </summary>
/// <param name="lonLat"></param>
/// <param name="zoom"></param>
/// <returns></returns>
public XY GetGoogleTileNumberFromLonLat(LonLat lonLat, int zoom)
{
return(mecator.LonLatToTileXy(lonLat, zoom));
}
/// <summary>
/// 方向获取
/// </summary>
/// <param name="me"></param>
/// <param name="other"></param>
/// <returns></returns>
public static Direction GetDirection(LonLat me, LonLat other)
{
return(GetDirection(new XYZ(me.Lon, me.Lat), new XYZ(other.Lon, other.Lat)));
}