323 lines
11 KiB
C#
323 lines
11 KiB
C#
#region License
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//
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// The Open Toolkit Library License
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//
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// Copyright (c) 2006 - 2009 the Open Toolkit library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace OpenTK
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{
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#if NO_SYSDRAWING
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/// <summary>
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/// Represents a rectangular region on a two-dimensional plane.
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/// </summary>
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public struct Rectangle : IEquatable<Rectangle>
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{
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#region Fields
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Point location;
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Size size;
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#endregion
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#region Constructors
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/// <summary>
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/// Constructs a new Rectangle instance.
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/// </summary>
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/// <param name="location">The top-left corner of the Rectangle.</param>
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/// <param name="size">The width and height of the Rectangle.</param>
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public Rectangle(Point location, Size size)
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: this()
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{
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Location = location;
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Size = size;
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}
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/// <summary>
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/// Constructs a new Rectangle instance.
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/// </summary>
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/// <param name="x">The x coordinate of the Rectangle.</param>
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/// <param name="y">The y coordinate of the Rectangle.</param>
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/// <param name="width">The width coordinate of the Rectangle.</param>
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/// <param name="height">The height coordinate of the Rectangle.</param>
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public Rectangle(int x, int y, int width, int height)
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: this(new Point(x, y), new Size(width, height))
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{ }
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#endregion
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#region Public Members
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/// <summary>
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/// Gets or sets the x coordinate of the Rectangle.
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/// </summary>
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public int X
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{
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get { return Location.X; }
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set { Location = new Point (value, Y); }
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}
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/// <summary>
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/// Gets or sets the y coordinate of the Rectangle.
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/// </summary>
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public int Y
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{
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get { return Location.Y; }
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set { Location = new Point (X, value); }
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}
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/// <summary>
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/// Gets or sets the width of the Rectangle.
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/// </summary>
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public int Width
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{
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get { return Size.Width; }
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set { Size = new Size (value, Height); }
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}
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/// <summary>
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/// Gets or sets the height of the Rectangle.
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/// </summary>
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public int Height
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{
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get { return Size.Height; }
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set { Size = new Size(Width, value); }
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}
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/// <summary>
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/// Gets or sets a <see cref="Point"/> representing the x and y coordinates
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/// of the Rectangle.
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/// </summary>
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public Point Location
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{
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get { return location; }
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set { location = value; }
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}
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/// <summary>
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/// Gets or sets a <see cref="Size"/> representing the width and height
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/// of the Rectangle.
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/// </summary>
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public Size Size
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{
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get { return size; }
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set { size = value; }
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}
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/// <summary>
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/// Gets the y coordinate of the top edge of this Rectangle.
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/// </summary>
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public int Top { get { return Y; } }
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/// <summary>
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/// Gets the x coordinate of the right edge of this Rectangle.
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/// </summary>
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public int Right { get { return X + Width; } }
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/// <summary>
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/// Gets the y coordinate of the bottom edge of this Rectangle.
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/// </summary>
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public int Bottom { get { return Y + Height; } }
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/// <summary>
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/// Gets the x coordinate of the left edge of this Rectangle.
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/// </summary>
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public int Left { get { return X; } }
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/// <summary>
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/// Gets a <see cref="System.Boolean"/> that indicates whether this
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/// Rectangle is equal to the empty Rectangle.
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/// </summary>
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public bool IsEmpty
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{
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get { return Location.IsEmpty && Size.IsEmpty; }
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}
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/// <summary>
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/// Defines the empty Rectangle.
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/// </summary>
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public static readonly Rectangle Zero = new Rectangle();
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/// <summary>
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/// Defines the empty Rectangle.
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/// </summary>
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public static readonly Rectangle Empty = new Rectangle();
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/// <summary>
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/// Constructs a new instance with the specified edges.
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/// </summary>
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/// <param name="left">The left edge of the Rectangle.</param>
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/// <param name="top">The top edge of the Rectangle.</param>
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/// <param name="right">The right edge of the Rectangle.</param>
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/// <param name="bottom">The bottom edge of the Rectangle.</param>
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/// <returns>A new Rectangle instance with the specified edges.</returns>
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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(new Point(left, top), new Size(right - left, bottom - top));
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}
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/// <summary>
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/// Tests whether this instance contains the specified Point.
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/// </summary>
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/// <param name="point">The <see cref="Point"/> to test.</param>
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/// <returns>True if this instance contains point; false otherwise.</returns>
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/// <remarks>The left and top edges are inclusive. The right and bottom edges
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/// are exclusive.</remarks>
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public bool Contains(Point point)
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{
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return point.X >= Left && point.X < Right &&
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point.Y >= Top && point.Y < Bottom;
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}
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/// <summary>
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/// Tests whether this instance contains the specified Rectangle.
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/// </summary>
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/// <param name="rect">The <see cref="Rectangle"/> to test.</param>
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/// <returns>True if this instance contains rect; false otherwise.</returns>
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/// <remarks>The left and top edges are inclusive. The right and bottom edges
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/// are exclusive.</remarks>
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public bool Contains(Rectangle rect)
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{
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return Contains(rect.Location) && Contains(rect.Location + rect.Size);
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}
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/// <summary>
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/// Compares two instances for equality.
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/// </summary>
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/// <param name="left">The first instance.</param>
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/// <param name="right">The second instance.</param>
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/// <returns>True, if left is equal to right; false otherwise.</returns>
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public static bool operator ==(Rectangle left, Rectangle right)
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{
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return left.Equals(right);
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}
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/// <summary>
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/// Compares two instances for inequality.
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/// </summary>
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/// <param name="left">The first instance.</param>
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/// <param name="right">The second instance.</param>
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/// <returns>True, if left is not equal to right; false otherwise.</returns>
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public static bool operator !=(Rectangle left, Rectangle right)
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{
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return !left.Equals(right);
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}
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/// <summary>
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/// Converts an OpenTK.Rectangle instance to a System.Drawing.Rectangle.
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/// </summary>
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/// <param name="rect">
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/// The <see cref="Rectangle"/> instance to convert.
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/// </param>
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/// <returns>
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/// A <see cref="System.Drawing.Rectangle"/> instance equivalent to rect.
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/// </returns>
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public static implicit operator System.Drawing.Rectangle(Rectangle rect)
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{
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return new System.Drawing.Rectangle(rect.Location, rect.Size);
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}
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/// <summary>
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/// Converts a System.Drawing.Rectangle instance to an OpenTK.Rectangle.
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/// </summary>
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/// <param name="rect">
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/// The <see cref="System.Drawing.Rectangle"/> instance to convert.
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/// </param>
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/// <returns>
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/// A <see cref="Rectangle"/> instance equivalent to point.
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/// </returns>
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public static implicit operator Rectangle(System.Drawing.Rectangle rect)
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{
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return new Rectangle(rect.Location, rect.Size);
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}
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/// <summary>
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/// Converts an OpenTK.Rectangle instance to a System.Drawing.RectangleF.
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/// </summary>
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/// <param name="rect">
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/// The <see cref="Rectangle"/> instance to convert.
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/// </param>
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/// <returns>
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/// A <see cref="System.Drawing.RectangleF"/> instance equivalent to rect.
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/// </returns>
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public static implicit operator System.Drawing.RectangleF(Rectangle rect)
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{
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return new System.Drawing.RectangleF(rect.Location, rect.Size);
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}
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/// <summary>
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/// Indicates whether this instance is equal to the specified object.
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/// </summary>
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/// <param name="obj">The object instance to compare to.</param>
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/// <returns>True, if both instances are equal; false otherwise.</returns>
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public override bool Equals(object obj)
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{
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if (obj is Rectangle)
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return Equals((Rectangle)obj);
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return false;
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}
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/// <summary>
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/// Returns the hash code for this instance.
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/// </summary>
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/// <returns>A <see cref="System.Int32"/> that represents the hash code for this instance./></returns>
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public override int GetHashCode()
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{
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return Location.GetHashCode() & Size.GetHashCode();
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}
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/// <summary>
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/// Returns a <see cref="System.String"/> that describes this instance.
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/// </summary>
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/// <returns>A <see cref="System.String"/> that describes this instance.</returns>
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public override string ToString()
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{
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return String.Format("{{{0}-{1}}}", Location, Location + Size);
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}
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#endregion
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#region IEquatable<Rectangle> Members
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/// <summary>
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/// Indicates whether this instance is equal to the specified Rectangle.
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/// </summary>
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/// <param name="other">The instance to compare to.</param>
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/// <returns>True, if both instances are equal; false otherwise.</returns>
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public bool Equals(Rectangle other)
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{
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return Location.Equals(other.Location) &&
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Size.Equals(other.Size);
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}
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#endregion
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}
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#endif
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}
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