/// <summary>
/// 获取角度
/// </summary>
/// <param name="lng">经度</param>
/// <param name="lat">纬度</param>
/// <returns></returns>
private double GetAngle(double lng, double lat)
{
MapFrame.Core.Model.MapLngLat point = new MapFrame.Core.Model.MapLngLat(lng, lat);
//计算角度
double zqz = Math.Abs((firstPoint.X - point.Lng)) / Math.Abs((firstPoint.Y - point.Lat));
double zqzjd = Math.Atan(zqz);
double jd = Math.Round(180 / Math.PI * zqzjd, 2);
if ((firstPoint.X - point.Lng) < 0 && (firstPoint.Y - point.Lat) < 0)//第一象限
{
}
else if ((firstPoint.X - point.Lng) < 0 && (firstPoint.Y - point.Lat) > 0) //第四象限
{
jd = 180 - jd;
}
else if ((firstPoint.X - point.Lng) > 0 && (firstPoint.Y - point.Lat) > 0) //第三象限
{
jd += 180;
}
else if ((firstPoint.X - point.Lng) > 0 && (firstPoint.Y - point.Lat) < 0) //第二象限
{
jd = 360 - jd;
}
return(jd);
}
/// <summary>
/// 编辑点移动事件
/// </summary>
/// <param name="element"></param>
/// <param name="e"></param>
void editPoint_MarkerMouseMoveEvent(IElement element, IMapControlEvents2_OnMouseMoveEvent e)
{
IPoint newPoint = new PointClass();
var mapPoint = new MapFrame.Core.Model.MapLngLat()
{
Lng = e.mapX, Lat = e.mapY
};
newPoint.PutCoords(e.mapX, e.mapY);
if (isControlDown)
{
centerMarker.MoveTo(newPoint);//圆心点也跟着移动
circleArcMap.UpdatePosition(mapPoint);
int i = 0;
for (float ang = 0; ang <= 270; ang += 90)
{
var point = GetPointByDistanceAndAngle(circleArcMap.GetRadius() * 100000, newPoint, ang);
markerList[i].MoveTo(point);
i++;
}
}
else
{
if (currentMarker.Name == "s")
{
currentMarker.MoveTo(newPoint);
circleArcMap.UpdatePosition(mapPoint);
int i = 0;
for (float ang = 0; ang <= 270; ang += 90)
{
var point = GetPointByDistanceAndAngle(circleArcMap.GetRadius(), newPoint, ang);
markerList[i].MoveTo(point);
i++;
}
}
else
{
IPoint centerDot = new PointClass()
{
X = circleArcMap.GetCenterDot().Lng, Y = circleArcMap.GetCenterDot().Lat
};
double radius = MapFrame.Core.Common.Utils.GetDistance(circleArcMap.GetCenterDot(), mapPoint);
circleArcMap.UpdatePosition(radius);
int i = 0;
for (float ang = 0; ang <= 270; ang += 90)
{
var point = GetPointByDistanceAndAngle(radius, centerDot, ang);
markerList[i].MoveTo(point);
i++;
}
}
mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, circleElement, null);
}
currentPoint = new PointClass();
currentPoint.PutCoords(e.mapX, e.mapY);
}
/// <summary>
/// 根据两点坐标求距离(GMap、Mgis单位为公里)
/// </summary>
/// <param name="p1">坐标点1</param>
/// <param name="p2">坐标点2</param>
/// <returns></returns>
public static double GetDistance(MapFrame.Core.Model.MapLngLat p1, MapFrame.Core.Model.MapLngLat p2)
{
double radlat1 = rad(p1.Lat);
double radlat2 = rad(p2.Lat);
double a = radlat1 - radlat2;
double b = rad(p1.Lng) - rad(p2.Lng);
double s = 2 * Math.Asin(Math.Sqrt(Math.Pow(a / 2, 2) + Math.Cos(radlat1) * Math.Cos(radlat2) * Math.Pow(Math.Sin(b / 2), 2)));
s = s * Earth;
return((float)Math.Round(s * 10000) / 10000);
}
/// <summary>
/// 文字kml构造函数
/// </summary>
public KmlText()
{
Position = new MapLngLat();
}
public KmlCircle()
{
Position = new MapLngLat();
}
public KmlModel3d()
{
Position = new MapLngLat();
}