ryujinx-backup/Opentk
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

add double precision Box2

Browse source
This commit is contained in:
kevin 2016-03-02 20:22:52 -08:00
parent 3008a25ef3
commit 9a923954f6
1 changed files with 218 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

218
Source/OpenTK/Math/Box2d.cs Normal file
View file

@ -0,0 +1,218 @@
#region --- License ---
/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
* See license.txt for license info
*/
#endregion
using System;
using System.Runtime.InteropServices;
namespace OpenTK
{
/// <summary>
/// Defines a 2d box (rectangle).
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct Box2d
{
/// <summary>
/// The left boundary of the structure.
/// </summary>
public double Left;
/// <summary>
/// The right boundary of the structure.
/// </summary>
public double Right;
/// <summary>
/// The top boundary of the structure.
/// </summary>
public double Top;
/// <summary>
/// The bottom boundary of the structure.
/// </summary>
public double Bottom;
/// <summary>
/// Constructs a new Box2d with the specified dimensions.
/// </summary>
/// <param name="topLeft">An OpenTK.Vector2d describing the top-left corner of the Box2d.</param>
/// <param name="bottomRight">An OpenTK.Vector2d describing the bottom-right corner of the Box2d.</param>
public Box2d(Vector2d topLeft, Vector2d bottomRight)
{
Left = topLeft.X;
Top = topLeft.Y;
Right = bottomRight.X;
Bottom = bottomRight.Y;
}
/// <summary>
/// Constructs a new Box2d with the specified dimensions.
/// </summary>
/// <param name="left">The position of the left boundary.</param>
/// <param name="top">The position of the top boundary.</param>
/// <param name="right">The position of the right boundary.</param>
/// <param name="bottom">The position of the bottom boundary.</param>
public Box2d(double left, double top, double right, double bottom)
{
Left = left;
Top = top;
Right = right;
Bottom = bottom;
}
/// <summary>
/// Creates a new Box2d with the specified dimensions.
/// </summary>
/// <param name="top">The position of the top boundary.</param>
/// <param name="left">The position of the left boundary.</param>
/// <param name="right">The position of the right boundary.</param>
/// <param name="bottom">The position of the bottom boundary.</param>
/// <returns>A new OpenTK.Box2d with the specfied dimensions.</returns>
public static Box2d FromTLRB(double top, double left, double right, double bottom)
{
return new Box2d(left, top, right, bottom);
}
/// <summary>
/// Creates a new Box2d with the specified dimensions.
/// </summary>
/// <param name="top">The position of the top boundary.</param>
/// <param name="left">The position of the left boundary.</param>
/// <param name="width">The width of the box.</param>
/// <param name="height">The height of the box.</param>
/// <returns>A new OpenTK.Box2d with the specfied dimensions.</returns>
public static Box2d FromDimensions(double left, double top, double width, double height)
{
return new Box2d(left, top, left + width, top + height);
}
/// <summary>
/// Creates a new Box2d with the specified dimensions.
/// </summary>
/// <param name="position">The position of the top left corner.</param>
/// <param name="size">The size of the box.</param>
/// <returns>A new OpenTK.Box2d with the specfied dimensions.</returns>
public static Box2d FromDimensions(Vector2d position, Vector2d size)
{
return FromDimensions(position.X, position.Y, size.X, size.Y);
}
/// <summary>
/// Creates a new Box2d from the specified corners.
/// </summary>
/// <param name="corner1">One of the corners of the box.</param>
/// <param name="corner2">The opposite corner of the box.</param>
/// <returns></returns>
public static Box2d FromCorners(Vector2d corner1, Vector2d corner2)
{
Box2d box;
if (corner1.X < corner2.X)
{
box.Left = corner1.X;
box.Right = corner2.X;
}
else
{
box.Left = corner2.X;
box.Right = corner1.X;
}
if (corner1.Y < corner2.Y)
{
box.Top = corner1.Y;
box.Bottom = corner2.Y;
}
else
{
box.Top = corner2.Y;
box.Bottom = corner1.Y;
}
return box;
}
/// <summary>
/// Gets a double describing the width of the Box2d structure.
/// </summary>
public double Width { get { return (double)System.Math.Abs(Right - Left); } }
/// <summary>
/// Gets a double describing the height of the Box2d structure.
/// </summary>
public double Height { get { return (double)System.Math.Abs(Bottom - Top); } }
/// <summary>
/// Returns whether the box contains the specified point.
/// </summary>
/// <param name="point">The point to query.</param>
/// <returns>Whether this box contains the point.</returns>
public bool Contains(Vector2d point)
{
return (point.X >= Left != point.X > Right) && (point.Y >= Top != point.Y > Bottom);
}
/// <summary>
/// Returns a Box2d translated by the given amount.
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
public Box2d Translate(Vector2d point)
{
return new Box2d(Left + point.X, Top + point.Y, Right + point.X, Bottom + point.Y);
}
/// <summary>
/// Equality comparator.
/// </summary>
public static bool operator ==(Box2d left, Box2d right)
{
return left.Bottom == right.Bottom && left.Top == right.Top &&
left.Left == right.Left && left.Right == right.Right;
}
/// <summary>
/// Inequality comparator.
/// </summary>
public static bool operator !=(Box2d left, Box2d right)
{
return !(left == right);
}
/// <summary>
/// Functional equality comparator.
/// </summary>
public bool Equals(Box2d other)
{
return this == other;
}
/// <summary>
/// Implements Object.Equals.
/// </summary>
public override bool Equals(object obj)
{
return obj is Box2d && Equals((Box2d) obj);
}
/// <summary>
/// Gets the hash code for this Box2d.
/// </summary>
/// <returns></returns>
public override int GetHashCode()
{
return Left.GetHashCode() ^ Right.GetHashCode() ^ Top.GetHashCode() ^ Bottom.GetHashCode();
}
private static string listSeparator = System.Globalization.CultureInfo.CurrentCulture.TextInfo.ListSeparator;
/// <summary>
/// Returns a <see cref="System.String"/> describing the current instance.
/// </summary>
/// <returns></returns>
public override string ToString()
{
return String.Format("({0}{4} {1}) - ({2}{4} {3})", Left, Top, Right, Bottom, listSeparator);
}
}
}