724ea88c3b
These types provide fixed-point representations of distances, angles, positions, vectors, and rotations in 3d space. WAngle (and WRot) represents 360 degrees in 1024 units. WRange (and WPos, WVec) represents 1 cell in 1024 units. Distance types in yaml can be written as <cell>c<subcell>, e.g. "4c512" for 4.5 cells.
65 lines
2.1 KiB
C#
65 lines
2.1 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2013 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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/// 3d World vector for describing offsets and distances - 1024 units = 1 cell.
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/// </summary>
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public struct WVec
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{
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public readonly int X, Y, Z;
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public WVec(int x, int y, int z) { X = x; Y = y; Z = z; }
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public WVec(WRange x, WRange y, WRange z) { X = x.Range; Y = y.Range; Z = z.Range; }
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public static readonly WVec Zero = new WVec(0, 0, 0);
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public static WVec operator +(WVec a, WVec b) { return new WVec(a.X + b.X, a.Y + b.Y, a.Z + b.Z); }
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public static WVec operator -(WVec a, WVec b) { return new WVec(a.X - b.X, a.Y - b.Y, a.Y - b.Y); }
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public static WVec operator -(WVec a) { return new WVec(-a.X, -a.Y, -a.Z); }
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public static bool operator ==(WVec me, WVec other) { return (me.X == other.X && me.Y == other.Y && me.Z == other.Z); }
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public static bool operator !=(WVec me, WVec other) { return !(me == other); }
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public static int Dot(WVec a, WVec b) { return a.X * b.X + a.Y * b.Y + a.Z * b.Z; }
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public int LengthSquared { get { return X * X + Y * Y + Z * Z; } }
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public int Length { get { return (int)Math.Sqrt(LengthSquared); } }
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public WVec Rotate(WRot rot)
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{
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var mtx = rot.AsMatrix();
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var lx = (long)X;
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var ly = (long)Y;
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var lz = (long)Z;
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return new WVec(
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(int)((lx * mtx[0] + ly*mtx[4] + lz*mtx[8]) / mtx[15]),
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(int)((lx * mtx[1] + ly*mtx[5] + lz*mtx[9]) / mtx[15]),
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(int)((lx * mtx[2] + ly*mtx[6] + lz*mtx[10]) / mtx[15]));
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}
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public override int GetHashCode() { return X.GetHashCode() ^ Y.GetHashCode() ^ Z.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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WVec o = (WVec)obj;
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return o == this;
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}
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public override string ToString() { return "{0},{1},{2}".F(X, Y, Z); }
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}
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}
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