/// <summary>
/// 计算小矩形的中心点
/// </summary>
/// <param name="regionRN">小矩形区域</param>
/// <returns></returns>
public static PointForRN GetCenterPoint(RegionForRN regionRN)
{
PointForRN point = new PointForRN();
//GeoXYPoint geoPoint = new GeoXYPoint();
//point.GeoXYPoint = geoPoint;
point.GeoXYPoint.X = (regionRN.PolygonRegion.Left + regionRN.PolygonRegion.Right) / 2;
point.GeoXYPoint.Y = (regionRN.PolygonRegion.Top + regionRN.PolygonRegion.Bottom) / 2;
//to be added
return point;
}
/// <summary>
/// 计算RegionList的重心
/// </summary>
/// <param name="regionList"></param>
/// <returns></returns>
public static PointForRN CalcRegionsBary(List<RegionForRN> regionList)
{
double x = 0;
double y = 0;
double weight = 0;
PointForRN bary = new PointForRN();
foreach (RegionForRN region in regionList)
{
region.PointList = CalcWeight(region.PointList);
foreach (PointForRN pt in region.PointList)
{
weight += pt.Weight ;
x = pt.GeoXYPoint.X * pt.Weight + x;
y = pt.GeoXYPoint.Y * pt.Weight + y;
}
}
if (weight != 0)
{
GeoXYPoint point = new GeoXYPoint();
point.X = x / weight;
point.Y = y / weight;
double tempDis = double.MaxValue;
foreach (RegionForRN rg in regionList)
{
foreach (PointForRN pt in rg.PointList)
{
double distance = CalcDistance(point, pt.GeoXYPoint);
if (tempDis > distance)
{
bary = pt;
tempDis = distance;
}
}
}
}
return bary;
}
/// <summary>
/// 合并距离近的点
/// </summary>
/// <param name="point1"></param>
/// <param name="point2"></param>
/// <returns></returns>
public static PointForRN CalculateBaryForPoints(PointForRN point1, PointForRN point2)
{
PointForRN point = new PointForRN();
point.GeoXYPoint.X = (point1.GeoXYPoint.X * point1.Rsrp + point2.GeoXYPoint.X * point2.Rsrp) / (point1.Rsrp + point2.Rsrp);
point.GeoXYPoint.Y = (point1.GeoXYPoint.Y * point1.Rsrp + point2.GeoXYPoint.Y * point2.Rsrp) / (point1.Rsrp + point2.Rsrp);
return point;
}
