public static bool IsDiagonal(this Cardinal8 cardinal)
{
switch (cardinal)
{
case Cardinal8.NorthEast: return(true);
case Cardinal8.NorthWest: return(true);
case Cardinal8.SouthEast: return(true);
case Cardinal8.SouthWest: return(true);
}
return(false);
}
/// <summary>
/// Returns the vector representation of this cardinal.
/// </summary>
/// <returns>This cardinal as a Vector2</returns>
public static Vector2 ToVector(this Cardinal8 cardinal)
{
switch (cardinal)
{
case Cardinal8.North: return(Vector2.up);
case Cardinal8.South: return(-Vector2.up);
case Cardinal8.East: return(Vector2.right);
case Cardinal8.West: return(-Vector2.right);
case Cardinal8.NorthEast: return(new Vector2(1, 1).normalized);
case Cardinal8.NorthWest: return(new Vector2(1, -1).normalized);
case Cardinal8.SouthEast: return(new Vector2(1, -1).normalized);
case Cardinal8.SouthWest: return(new Vector2(-1, -1).normalized);
}
throw new ArgumentException();
}
public static float Angle(this Cardinal8 cardinal)
{
switch (cardinal)
{
case Cardinal8.North: return(0f);
case Cardinal8.South: return(180f);
case Cardinal8.East: return(90f);
case Cardinal8.West: return(270f);
case Cardinal8.NorthEast: return(45f);
case Cardinal8.NorthWest: return(315f);
case Cardinal8.SouthEast: return(135f);
case Cardinal8.SouthWest: return(225f);
}
throw new ArgumentException();
}
/// <summary>
/// Returns this Cardinal8 as a Cardinal4, 45 degree cardinals are snapped to the cardinal that is 45 degrees anti-clockwise.
/// </summary>
/// <returns>This Cardinal8 as a Cardinal4</returns>
public static Cardinal4 ToCardinal4(this Cardinal8 cardinal)
{
switch (cardinal)
{
case Cardinal8.North: return(Cardinal4.Up);
case Cardinal8.South: return(Cardinal4.Down);
case Cardinal8.East: return(Cardinal4.Right);
case Cardinal8.West: return(Cardinal4.Left);
case Cardinal8.NorthEast: return(Cardinal4.Up);
case Cardinal8.NorthWest: return(Cardinal4.Left);
case Cardinal8.SouthEast: return(Cardinal4.Right);
case Cardinal8.SouthWest: return(Cardinal4.Down);
}
throw new ArgumentException();
}
/// <summary>
/// Returns this cardinal rotated anti-clockwise by a certain number of 45 degree rotations.
/// </summary>
/// <param name="rotations">The number of 90 degree rotations to perform</param>
/// <returns>The rotated cardinal</returns>
public static Cardinal8 RotatedAntiClockwise(this Cardinal8 cardinal, int rotations = 1)
{
return((Cardinal8)MathUtils.Wrap((int)cardinal - rotations, 0, 7));
}
