/// <summary>
/// 获取与某点相邻的所有坐标点
/// </summary>
/// <param name="coord"></param>
/// <returns></returns>
public static List <Point2D> GetCoordsNextTo(Point2D coord, HaxgonCoordDirection direction = HaxgonCoordDirection.HORIZONTAL)
{
List <Point2D> coords = new List <Point2D>();
if (direction == HaxgonCoordDirection.HORIZONTAL)
{
if (coord.x % 2 == 0)
{
coords.Add(Point2D.Create(1, 0));
coords.Add(Point2D.Create(1, -1));
coords.Add(Point2D.Create(0, -1));
coords.Add(Point2D.Create(-1, -1));
coords.Add(Point2D.Create(-1, 0));
coords.Add(Point2D.Create(0, 1));
}
else
{
coords.Add(Point2D.Create(1, 0));
coords.Add(Point2D.Create(0, -1));
coords.Add(Point2D.Create(-1, 0));
coords.Add(Point2D.Create(-1, 1));
coords.Add(Point2D.Create(0, 1));
coords.Add(Point2D.Create(1, 1));
}
}
for (int i = 0; i < coords.Count; i++)
{
coords[i].x += coord.x;
coords[i].y += coord.y;
}
return(coords);
}
/// <summary>
/// 把坐标转换成像素位置
/// </summary>
/// <param name="coordx">x 坐标</param>
/// <param name="cooordy">y 坐标</param>
/// <param name="radius">六边形半径</param>
/// <param name="direction">六边形的方向</param>
/// <returns>位置信息</returns>
public static Point2D CoordToPosition(Point2D coord, float radius, HaxgonCoordDirection direction = HaxgonCoordDirection.HORIZONTAL)
{
Point2D p = Point2D.Create();
if (direction == HaxgonCoordDirection.HORIZONTAL)
{
p.x = coord.x * 1.5f * radius;
p.y = (2 * coord.y + (coord.x % 2 == 0 ? 0 : 1)) * halfSqrt3 * radius;
}
else
{
}
return(p);
}
public static Point2D PositionToCoord(Point2D position, float radius, HaxgonCoordDirection direction = HaxgonCoordDirection.HORIZONTAL)
{
Point2D p = Point2D.Create();
if (direction == HaxgonCoordDirection.HORIZONTAL)
{
int x = (int)Math.Floor(position.x * 2 / radius);
int y = (int)Math.Floor(position.y / (radius * halfSqrt3));
p.x = (float)Math.Floor((x + 1) / 3.0);
p.y = (float)Math.Floor((y + (p.x % 2 == 0 ? 1 : 0)) / 2.0);
if (x % 3 == 1 || x % 3 == -2)
{
Point2D p2 = CoordToPosition(p, radius, direction);
p2.x = position.x - p2.x;
p2.y = position.y - p2.y;
if (Line.IsPointHigher(p2, -2 * halfSqrt3, 2 * halfSqrt3 * radius))
{
if (p.x % 2 == 0)
{
p.x++;
}
else
{
p.x++;
p.y++;
}
}
else if (Line.IsPointLower(p2, 2 * halfSqrt3, -2 * halfSqrt3 * radius))
{
if (p.x % 2 == 0)
{
p.x++;
p.y--;
}
else
{
p.x++;
}
}
Point2D.Release(p2);
}
}
else
{
}
return(p);
}
/// <summary>
/// 获取相邻关系点的坐标
/// </summary>
/// <param name="coord"></param>
/// <param name="nextDirection"></param>
/// <param name="direction"></param>
/// <returns></returns>
public static Point2D GetCoordNextTo(Point2D coord, HaxgonCoordNextDirection nextDirection, HaxgonCoordDirection direction = HaxgonCoordDirection.HORIZONTAL)
{
if (direction == HaxgonCoordDirection.HORIZONTAL)
{
if (coord.x % 2 == 0)
{
if (nextDirection == HaxgonCoordNextDirection.RIGHT_UP)
{
return(Point2D.Create(coord.x + 1, coord.y + 0));
}
if (nextDirection == HaxgonCoordNextDirection.RIGHT_DOWN)
{
return(Point2D.Create(coord.x + 1, coord.y - 1));
}
if (nextDirection == HaxgonCoordNextDirection.DOWN)
{
return(Point2D.Create(coord.x + 0, coord.y - 1));
}
if (nextDirection == HaxgonCoordNextDirection.LEFT_DOWN)
{
return(Point2D.Create(coord.x - 1, coord.y - 1));
}
if (nextDirection == HaxgonCoordNextDirection.LEFT_UP)
{
return(Point2D.Create(coord.x - 1, coord.y + 0));
}
if (nextDirection == HaxgonCoordNextDirection.UP)
{
return(Point2D.Create(coord.x + 0, coord.y + 1));
}
}
else
{
if (nextDirection == HaxgonCoordNextDirection.RIGHT_DOWN)
{
return(Point2D.Create(coord.x + 1, coord.y + 0));
}
if (nextDirection == HaxgonCoordNextDirection.DOWN)
{
return(Point2D.Create(coord.x + 0, coord.y - 1));
}
if (nextDirection == HaxgonCoordNextDirection.LEFT_DOWN)
{
return(Point2D.Create(coord.x - 1, coord.y + 0));
}
if (nextDirection == HaxgonCoordNextDirection.LEFT_UP)
{
return(Point2D.Create(coord.x - 1, coord.y + 1));
}
if (nextDirection == HaxgonCoordNextDirection.UP)
{
return(Point2D.Create(coord.x + 0, coord.y + 1));
}
if (nextDirection == HaxgonCoordNextDirection.RIGHT_UP)
{
return(Point2D.Create(coord.x + 1, coord.y + 1));
}
}
}
return(null);
}
public HaxgonCoord(HaxgonCoordDirection direction = HaxgonCoordDirection.HORIZONTAL)
{
this.direction = direction;
}
