public static float Distance(float px, float py, HexagonIndex hexagonIndex)
{
var hexagon = new Hexagon();
hexagon.x = hexagonIndex.x;
hexagon.y = hexagonIndex.y;
var distance = Math.Sqrt((px - hexagon.px) * (px - hexagon.px) + (py - hexagon.py) * (py - hexagon.py));
return((float)distance);
}
/// <summary>
/// 得到周围相邻的的六边形
/// 逆时针旋转，分别取各个相邻的，从12点开始，2小时取一个边
/// </summary>
/// <param name="hexagon"></param>
/// <returns></returns>
public static List <HexagonIndex> GetAroundHexagon(int x, int y)
{
var list = new List <HexagonIndex>();
//偶然
if (y % 2 == 0)
{
//1
var hindex1 = new HexagonIndex();
hindex1.x = x;
hindex1.y = y + 1;
list.Add(hindex1);
//2
var hindex2 = new HexagonIndex();
hindex2.x = x + 1;
hindex2.y = y;
list.Add(hindex2);
//3
var hindex3 = new HexagonIndex();
hindex3.x = x;
hindex3.y = y - 1;
list.Add(hindex3);
//4
var hindex4 = new HexagonIndex();
hindex4.x = x - 1;
hindex4.y = y - 1;
list.Add(hindex4);
//5
var hindex5 = new HexagonIndex();
hindex5.x = x - 1;
hindex5.y = y;
list.Add(hindex5);
//6
var hindex6 = new HexagonIndex();
hindex6.x = x - 1;
hindex6.y = y + 1;
list.Add(hindex6);
}
else ///奇数
{
//1
var hindex1 = new HexagonIndex();
hindex1.x = x + 1;
hindex1.y = y + 1;
list.Add(hindex1);
//2
var hindex2 = new HexagonIndex();
hindex2.x = x + 1;
hindex2.y = y;
list.Add(hindex2);
//3
var hindex3 = new HexagonIndex();
hindex3.x = x + 1;
hindex3.y = y - 1;
list.Add(hindex3);
//4
var hindex4 = new HexagonIndex();
hindex4.x = x;
hindex4.y = y - 1;
list.Add(hindex4);
//5
var hindex5 = new HexagonIndex();
hindex5.x = x - 1;
hindex5.y = y + 1;
list.Add(hindex5);
//6
var hindex6 = new HexagonIndex();
hindex6.x = x;
hindex6.y = y + 1;
list.Add(hindex6);
}
//清理不存在的
list.RemoveAll(i => i.x <0 || i.y <0 || i.x> Config.Width_Count || i.y> Config.Heigth_Count);
return(list);
}