//
// System.Drawing.PointF.cs
//
// Author:
// Mike Kestner (mkestner@speakeasy.net)
//
// Copyright (C) 2001 Mike Kestner
// Copyright (C) 2004,2006 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Globalization;
using System.Runtime.InteropServices;
using System.ComponentModel;
namespace System.Drawing{
[Serializable]
[ComVisible (true)]
public struct PointF
{
// Private x and y coordinate fields.
private float x, y;
// -----------------------
// Public Shared Members
// -----------------------
/// <summary>
/// Empty Shared Field
/// </summary>
///
/// <remarks>
/// An uninitialized PointF Structure.
/// </remarks>
public static readonly PointF Empty;
/// <summary>
/// Addition Operator
/// </summary>
///
/// <remarks>
/// Translates a PointF using the Width and Height
/// properties of the given Size.
/// </remarks>
public static PointF operator + (PointF pt, Size sz)
{
return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
}
#if NET_2_0
public static PointF operator + (PointF pt, SizeF sz)
{
return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
}
#endif
/// <summary>
/// Equality Operator
/// </summary>
///
/// <remarks>
/// Compares two PointF objects. The return value is
/// based on the equivalence of the X and Y properties
/// of the two points.
/// </remarks>
public static bool operator == (PointF left, PointF right)
{
return ((left.X == right.X) && (left.Y == right.Y));
}
/// <summary>
/// Inequality Operator
/// </summary>
///
/// <remarks>
/// Compares two PointF objects. The return value is
/// based on the equivalence of the X and Y properties
/// of the two points.
/// </remarks>
public static bool operator != (PointF left, PointF right)
{
return ((left.X != right.X) || (left.Y != right.Y));
}
/// <summary>
/// Subtraction Operator
/// </summary>
///
/// <remarks>
/// Translates a PointF using the negation of the Width
/// and Height properties of the given Size.
/// </remarks>
public static PointF operator - (PointF pt, Size sz)
{
return new PointF (pt.X - sz.Width, pt.Y - sz.Height);
}
#if NET_2_0
public static PointF operator - (PointF pt, SizeF sz)
{
return new PointF (pt.X - sz.Width, pt.Y - sz.Height);
}
#endif
// -----------------------
// Public Constructor
// -----------------------
/// <summary>
/// PointF Constructor
/// </summary>
///
/// <remarks>
/// Creates a PointF from a specified x,y coordinate pair.
/// </remarks>
public PointF (float x, float y)
{
this.x = x;
this.y = y;
}
// -----------------------
// Public Instance Members
// -----------------------
/// <summary>
/// IsEmpty Property
/// </summary>
///
/// <remarks>
/// Indicates if both X and Y are zero.
/// </remarks>
[Browsable (false)]
public bool IsEmpty {
get {
return ((x == 0.0) && (y == 0.0));
}
}
/// <summary>
/// X Property
/// </summary>
///
/// <remarks>
/// The X coordinate of the PointF.
/// </remarks>
public float X {
get {
return x;
}
set {
x = value;
}
}
/// <summary>
/// Y Property
/// </summary>
///
/// <remarks>
/// The Y coordinate of the PointF.
/// </remarks>
public float Y {
get {
return y;
}
set {
y = value;
}
}
/// <summary>
/// Equals Method
/// </summary>
///
/// <remarks>
/// Checks equivalence of this PointF and another object.
/// </remarks>
public override bool Equals (object obj)
{
if (!(obj is PointF))
return false;
return (this == (PointF) obj);
}
/// <summary>
/// GetHashCode Method
/// </summary>
///
/// <remarks>
/// Calculates a hashing value.
/// </remarks>
public override int GetHashCode ()
{
return (int) x ^ (int) y;
}
/// <summary>
/// ToString Method
/// </summary>
///
/// <remarks>
/// Formats the PointF as a string in coordinate notation.
/// </remarks>
public override string ToString ()
{
return String.Format ("{{X={0}, Y={1}}}", x.ToString (CultureInfo.CurrentCulture),
y.ToString (CultureInfo.CurrentCulture));
}
#if NET_2_0
public static PointF Add (PointF pt, Size sz)
{
return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
}
public static PointF Add (PointF pt, SizeF sz)
{
return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
}
public static PointF Subtract (PointF pt, Size sz)
{
return new PointF (pt.X - sz.Width, pt.Y - sz.Height);
}
public static PointF Subtract (PointF pt, SizeF sz)
{
return new PointF (pt.X - sz.Width, pt.Y - sz.Height);
}
#endif
}
}
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