New types for cell and pixel coordinate position/vectors.

OpenRA.Game/CPos.cs

@@ -0,0 +1,71 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Drawing;
+
+namespace OpenRA
+{
+	/// <summary>
+	/// Cell coordinate position in the world (coarse).
+	/// </summary>
+	public struct CPos
+	{
+		public readonly int X, Y;
+
+		public CPos(int x, int y) { X = x; Y = y; }
+
+		public static readonly CPos Zero = new CPos(0, 0);
+
+		public static explicit operator CPos(int2 a) { return new CPos(a.X, a.Y); }
+
+		public static CPos operator +(CVec a, CPos b) { return new CPos(a.X + b.X, a.Y + b.Y); }
+		public static CPos operator +(CPos a, CVec b) { return new CPos(a.X + b.X, a.Y + b.Y); }
+		public static CPos operator -(CPos a, CVec b) { return new CPos(a.X - b.X, a.Y - b.Y); }
+
+		public static CVec operator -(CPos a, CPos b) { return new CVec(a.X - b.X, a.Y - b.Y); }
+
+		public static bool operator ==(CPos me, CPos other) { return (me.X == other.X && me.Y == other.Y); }
+		public static bool operator !=(CPos me, CPos other) { return !(me == other); }
+
+		public static CPos Max(CPos a, CPos b) { return new CPos(Math.Max(a.X, b.X), Math.Max(a.Y, b.Y)); }
+		public static CPos Min(CPos a, CPos b) { return new CPos(Math.Min(a.X, b.X), Math.Min(a.Y, b.Y)); }
+
+		public float2 ToFloat2() { return new float2(X, Y); }
+		public int2 ToInt2() { return new int2(X, Y); }
+		public PPos ToPPos() { return new PPos(Game.CellSize * X, Game.CellSize * Y); }
+
+		public CPos Clamp(Rectangle r)
+		{
+			return new CPos(Math.Min(r.Right, Math.Max(X, r.Left)),
+							Math.Min(r.Bottom, Math.Max(Y, r.Top)));
+		}
+
+		public override int GetHashCode() { return X.GetHashCode() ^ Y.GetHashCode(); }
+
+		public override bool Equals(object obj)
+		{
+			if (obj == null)
+				return false;
+
+			CPos o = (CPos)obj;
+			return o == this;
+		}
+
+		public override string ToString() { return "{0},{1}".F(X, Y); }
+
+	}
+
+	public static class RectangleExtensions
+	{
+		public static CPos TopLeftAsCPos(this Rectangle r) { return new CPos(r.Left, r.Top); }
+		public static CPos BottomRightAsCPos(this Rectangle r) { return new CPos(r.Right, r.Bottom); }
+	}
+}