/// <summary>
/// 获取到目标点的邻居节点;
/// </summary>
public IEnumerable <CoordPack <RectCoord, RecDirections> > GetNeighbours(RecDirections directions)
{
foreach (var direction in GetDirections(directions))
{
yield return(new CoordPack <RectCoord, RecDirections>(GetDirection(direction), direction));
}
}
/// <summary>
/// 获取到方向集表示的所有方向;
/// </summary>
public static IEnumerable <RecDirections> GetDirections(RecDirections directions)
{
int mask = (int)directions;
for (int intDirection = minDirectionMark; intDirection <= maxDirectionMark; intDirection <<= 1)
{
if ((intDirection & mask) == 1)
{
yield return((RecDirections)intDirection);
}
}
}
/// <summary>
/// 获取到方向偏移量;
/// </summary>
public static RectCoord GetDirectionOffset(RecDirections direction)
{
return(directionsVector[(int)direction]);
}
/// <summary>
/// 获取到这个方向的坐标;
/// </summary>
public RectCoord GetDirection(RecDirections direction)
{
return(this + GetDirectionOffset(direction));
}