Some Calc comments. Cardinals enum

src/Struct/Cardinals.bf

@@ -0,0 +1,70 @@
+namespace Strawberry
+{
+	public enum Cardinals
+	{
+		case Right;
+		case Down;
+		case Left;
+		case Up;
+
+		public Cardinals Opposite()
+		{
+			switch (this)
+			{
+			case .Right:
+				return .Left;
+			case .Left:
+				return .Right;
+			case .Up:
+				return .Down;
+			case .Down:
+				return .Up;
+			}
+		}
+
+		public Cardinals NextClockwise()
+		{
+			switch (this)
+			{
+			case .Right:
+				return .Down;
+			case .Left:
+				return .Up;
+			case .Up:
+				return .Right;
+			case .Down:
+				return .Left;
+			}
+		}
+
+		public Cardinals NextCounterClockwise()
+		{
+			switch (this)
+			{
+			case .Right:
+				return .Up;
+			case .Left:
+				return .Down;
+			case .Up:
+				return .Left;
+			case .Down:
+				return .Right;
+			}
+		}
+
+		static public implicit operator Point(Cardinals c)
+		{
+			switch (c)
+			{
+			case .Right:
+				return Point.Right;
+			case .Left:
+				return Point.Left;
+			case .Up:
+				return Point.Up;
+			case .Down:
+				return Point.Down;
+			}
+		}
+	}
+}