/// <summary>
/// 更新邻小区，如果某在目标小区计算范围内，则加入邻小区列表
/// </summary>
/// <param name="targetSortCell">目标小区</param>
/// <param name="neighbourSortedCell">邻小区</param>
/// <param name="cell">某需要考虑是否加入邻小区列表的小区</param>
private void UpdateNeighbourSortedCell(SortedCell targetSortCell, List<SortedCell> neighbourSortedCell, SortedCell cell)
{
bool isinter = CheckDistanceAndDirection(targetSortCell, cell);
if (isinter)
{
neighbourSortedCell.Add(cell);
}
}
/// <summary>
/// 根据目标小区，对邻小区排序
/// </summary>
/// <param name="targetSortCell">目标小区</param>
/// <param name="toBeSortedCells">邻小区</param>
/// <returns>排序后的邻小区</returns>
private List<SortedCell> GetSortedCells(SortedCell targetSortCell, List<SortedCell> toBeSortedCells)
{
List<SortedCell> neighbourSortedCell = new List<SortedCell>();
foreach (SortedCell cell in toBeSortedCells)
{
//如果被比较的小区为目标小区，则跳过
if (IsCellEqual(targetSortCell, cell))
continue;
UpdateNeighbourSortedCell(targetSortCell, neighbourSortedCell, cell);
}
return neighbourSortedCell;
}
/// <summary>
/// 获取给定阈值内邻小区
/// </summary>
/// <param name="targetCell">目标小区</param>
/// <param name="Cells">备选邻小区集合</param>
/// <param name="maxInterNum">邻小区集合元素数阈值</param>
/// <returns>符合条件的邻小区集合</returns>
public List<ISimCellBase> GetNeighbourCells(ISimCellBase targetCell, List<ISimCellBase> Cells,int maxInterNum)
{
List<ISimCellBase> neighbourCells = new List<ISimCellBase>();
SortedCell targetSortCell = new SortedCell(targetCell);
//获取包装后的小区列表
List<SortedCell> toBeSortedCells = GetToBeSortedCell(Cells);
//获取排序后的邻小区
List<SortedCell> neighbourSortedCell = GetSortedCells(targetSortCell, toBeSortedCells);
//依据最大切换小区阈值确定最终小区列表
neighbourSortedCell = GetSortedCellinMaxInterNum(neighbourSortedCell, maxInterNum);
//将小区拆包装
return GetCellBaseList(neighbourSortedCell);
}
private bool IsCellEqual(SortedCell target, SortedCell compare)
{
return (target.CellBase == compare.CellBase);
}
/// <summary>
/// 构造距离
/// </summary>
/// <param name="homeCell"></param>
/// <param name="checkCell"></param>
/// <param name="distance"></param>
/// <param name="trandistance"></param>
private void ConstructDistance(SortedCell homeCell, SortedCell checkCell, out double distance, out double trandistance)
{
distance = CalcRadius(homeCell.CellBase);
double dx;
double dy;
dx = homeCell.CellBase.Parent.X - checkCell.CellBase.Parent.X;
dy = homeCell.CellBase.Parent.Y - checkCell.CellBase.Parent.Y;
trandistance = dx * dx + dy * dy;
checkCell.Distance = trandistance;
}
/// <summary>
/// 获取小区距离是否合适
/// </summary>
/// <param name="homeCell"></param>
/// <param name="checkCell"></param>
/// <returns></returns>
private bool CheckDistanceAndDirection(SortedCell homeCell, SortedCell checkCell)
{
double distance;
double trandistance;
ConstructDistance(homeCell, checkCell, out distance, out trandistance);
bool isDistanceFit = true;
if (trandistance > distance * distance)
{
isDistanceFit = false;
}
//else if (0 == trandistance)
//{
// return true;
//}
//else
//{
// //float currentangle = (float)(450 - Math.Atan2(dy, dx) * 180 / Math.PI) % 360;
// //float dangle = Math.Abs(currentangle - azimuth);
// //if (dangle < SweepAngle / 2 || 360 - dangle < SweepAngle / 2)
// //{
// return true;
// //}
//}
return isDistanceFit;
}
private List<SortedCell> GetToBeSortedCell(List<ISimCellBase> cells)
{
List<SortedCell> sortedCells = new List<SortedCell>();
foreach (ISimCellBase cell in cells)
{
SortedCell sortedCell = new SortedCell(cell);
sortedCells.Add(sortedCell);
}
return sortedCells;
}