99 lines
3.4 KiB
C#
99 lines
3.4 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Drawing;
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namespace OpenRA
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{
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/// <summary>
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/// Sub-pixel coordinate vector (very fine)
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/// </summary>
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public struct PSubVec
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{
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public readonly int X, Y;
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public PSubVec(int x, int y) { X = x; Y = y; }
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public PSubVec(Size p) { X = p.Width; Y = p.Height; }
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public static readonly PSubVec Zero = new PSubVec(0, 0);
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public static PSubVec OneCell { get { return new PSubVec(Game.CellSize, Game.CellSize); } }
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public static explicit operator PSubVec(int2 a) { return new PSubVec(a.X, a.Y); }
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public static explicit operator PSubVec(float2 a) { return new PSubVec((int)a.X, (int)a.Y); }
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public static PSubVec FromRadius(int r) { return new PSubVec(r, r); }
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public static PSubVec operator +(PSubVec a, PSubVec b) { return new PSubVec(a.X + b.X, a.Y + b.Y); }
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public static PSubVec operator -(PSubVec a, PSubVec b) { return new PSubVec(a.X - b.X, a.Y - b.Y); }
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public static PSubVec operator *(int a, PSubVec b) { return new PSubVec(a * b.X, a * b.Y); }
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public static PSubVec operator *(PSubVec b, int a) { return new PSubVec(a * b.X, a * b.Y); }
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public static PSubVec operator /(PSubVec a, int b) { return new PSubVec(a.X / b, a.Y / b); }
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public static PSubVec operator -(PSubVec a) { return new PSubVec(-a.X, -a.Y); }
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public static bool operator ==(PSubVec me, PSubVec other) { return (me.X == other.X && me.Y == other.Y); }
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public static bool operator !=(PSubVec me, PSubVec other) { return !(me == other); }
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public static PSubVec Max(PSubVec a, PSubVec b) { return new PSubVec(Math.Max(a.X, b.X), Math.Max(a.Y, b.Y)); }
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public static PSubVec Min(PSubVec a, PSubVec b) { return new PSubVec(Math.Min(a.X, b.X), Math.Min(a.Y, b.Y)); }
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public static int Dot(PSubVec a, PSubVec b) { return a.X * b.X + a.Y * b.Y; }
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public PSubVec Sign() { return new PSubVec(Math.Sign(X), Math.Sign(Y)); }
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public PSubVec Abs() { return new PSubVec(Math.Abs(X), Math.Abs(Y)); }
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public int LengthSquared { get { return X * X + Y * Y; } }
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public int Length { get { return (int)Math.Sqrt(LengthSquared); } }
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public float2 ToFloat2() { return new float2(X, Y); }
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public int2 ToInt2() { return new int2(X, Y); }
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public PVecInt ToPVecInt() { return new PVecInt(X / PSubPos.PerPx, Y / PSubPos.PerPx); }
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public PSubVec Clamp(Rectangle r)
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{
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return new PSubVec(
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Math.Min(r.Right, Math.Max(X, r.Left)),
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Math.Min(r.Bottom, Math.Max(Y, r.Top))
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);
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}
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public override int GetHashCode() { return X.GetHashCode() ^ Y.GetHashCode(); }
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public override bool Equals(object obj)
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{
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if (obj == null)
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return false;
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PSubVec o = (PSubVec)obj;
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return o == this;
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}
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public override string ToString() { return "{0},{1}".F(X, Y); }
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}
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public static class PSubVecExtensions
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{
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/// <summary>
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/// Scales the float2 vector up to a subpixel vector.
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/// </summary>
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/// <param name="vec"></param>
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/// <returns></returns>
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public static PSubVec ToPSubVec(this float2 vec)
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{
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return new PSubVec((int)(vec.X * PSubPos.PerPx), (int)(vec.Y * PSubPos.PerPx));
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}
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public static PSubVec ToPSubVec(this PVecInt vec)
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{
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return new PSubVec((vec.X * PSubPos.PerPx), (vec.Y * PSubPos.PerPx));
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}
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}
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}
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