132 lines
3.4 KiB
C#
132 lines
3.4 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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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, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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namespace OpenRA.Primitives
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{
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public readonly struct Rectangle : IEquatable<Rectangle>
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{
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public readonly int X;
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public readonly int Y;
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public readonly int Width;
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public readonly int Height;
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public static readonly Rectangle Empty;
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public static Rectangle FromLTRB(int left, int top, int right, int bottom)
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{
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return new Rectangle(left, top, right - left, bottom - top);
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}
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public static Rectangle Union(Rectangle a, Rectangle b)
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{
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return FromLTRB(Math.Min(a.Left, b.Left), Math.Min(a.Top, b.Top), Math.Max(a.Right, b.Right), Math.Max(a.Bottom, b.Bottom));
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}
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public static bool operator ==(Rectangle left, Rectangle right)
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{
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return left.X == right.X && left.Y == right.Y && left.Width == right.Width && left.Height == right.Height;
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}
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public static bool operator !=(Rectangle left, Rectangle right)
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{
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return !(left == right);
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}
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public Rectangle(int x, int y, int width, int height)
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{
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X = x;
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Y = y;
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Width = width;
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Height = height;
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}
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public Rectangle(int2 location, Size size)
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{
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X = location.X;
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Y = location.Y;
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Width = size.Width;
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Height = size.Height;
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}
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public readonly int Left => X;
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public readonly int Right => X + Width;
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public readonly int Top => Y;
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public readonly int Bottom => Y + Height;
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public readonly bool IsEmpty => X == 0 && Y == 0 && Width == 0 && Height == 0;
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public readonly int2 Location => new(X, Y);
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public readonly Size Size => new(Width, Height);
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public readonly int2 TopLeft => Location;
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public readonly int2 TopRight => new(X + Width, Y);
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public readonly int2 BottomLeft => new(X, Y + Height);
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public readonly int2 BottomRight => new(X + Width, Y + Height);
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public readonly bool Contains(int x, int y)
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{
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return x >= Left && x < Right && y >= Top && y < Bottom;
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}
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public readonly bool Contains(int2 pt)
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{
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return Contains(pt.X, pt.Y);
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}
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public readonly bool Equals(Rectangle other)
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{
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return this == other;
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}
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public override readonly bool Equals(object obj)
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{
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if (obj is not Rectangle)
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return false;
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return this == (Rectangle)obj;
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}
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public override readonly int GetHashCode()
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{
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return Height + Width ^ X + Y;
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}
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public readonly bool IntersectsWith(Rectangle rect)
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{
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return Left < rect.Right && Right > rect.Left && Top < rect.Bottom && Bottom > rect.Top;
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}
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readonly bool IntersectsWithInclusive(Rectangle r)
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{
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return Left <= r.Right && Right >= r.Left && Top <= r.Bottom && Bottom >= r.Top;
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}
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public static Rectangle Intersect(Rectangle a, Rectangle b)
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{
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if (!a.IntersectsWithInclusive(b))
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return Empty;
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return FromLTRB(Math.Max(a.Left, b.Left), Math.Max(a.Top, b.Top), Math.Min(a.Right, b.Right), Math.Min(a.Bottom, b.Bottom));
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}
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public readonly bool Contains(Rectangle rect)
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{
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return rect == Intersect(this, rect);
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}
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public static Rectangle operator *(int a, Rectangle b) { return new Rectangle(a * b.X, a * b.Y, a * b.Width, a * b.Height); }
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public override readonly string ToString()
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{
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return $"{X},{Y},{Width},{Height}";
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}
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}
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}
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