2 // System.Drawing.PointF.cs
5 // Mike Kestner (mkestner@speakeasy.net)
7 // Copyright (C) 2001 Mike Kestner
8 // Copyright (C) 2004,2006 Novell, Inc (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Globalization;
32 using System.Runtime.InteropServices;
33 using System.ComponentModel;
35 namespace System.Drawing
41 // Private x and y coordinate fields.
44 // -----------------------
45 // Public Shared Members
46 // -----------------------
49 /// Empty Shared Field
53 /// An uninitialized PointF Structure.
56 public static readonly PointF Empty;
63 /// Translates a PointF using the Width and Height
64 /// properties of the given Size.
67 public static PointF operator + (PointF pt, Size sz)
69 return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
72 public static PointF operator + (PointF pt, SizeF sz)
74 return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
83 /// Compares two PointF objects. The return value is
84 /// based on the equivalence of the X and Y properties
85 /// of the two points.
88 public static bool operator == (PointF pt_a, PointF pt_b)
90 return ((pt_a.X == pt_b.X) && (pt_a.Y == pt_b.Y));
94 /// Inequality Operator
98 /// Compares two PointF objects. The return value is
99 /// based on the equivalence of the X and Y properties
100 /// of the two points.
103 public static bool operator != (PointF pt_a, PointF pt_b)
105 return ((pt_a.X != pt_b.X) || (pt_a.Y != pt_b.Y));
109 /// Subtraction Operator
113 /// Translates a PointF using the negation of the Width
114 /// and Height properties of the given Size.
117 public static PointF operator - (PointF pt, Size sz)
119 return new PointF (pt.X - sz.Width, pt.Y - sz.Height);
122 public static PointF operator - (PointF pt, SizeF sz)
124 return new PointF (pt.X - sz.Width, pt.Y - sz.Height);
128 // -----------------------
129 // Public Constructor
130 // -----------------------
133 /// PointF Constructor
137 /// Creates a PointF from a specified x,y coordinate pair.
140 public PointF (float x, float y)
146 // -----------------------
147 // Public Instance Members
148 // -----------------------
155 /// Indicates if both X and Y are zero.
159 public bool IsEmpty {
161 return ((x == 0.0) && (y == 0.0));
170 /// The X coordinate of the PointF.
187 /// The Y coordinate of the PointF.
204 /// Checks equivalence of this PointF and another object.
207 public override bool Equals (object o)
212 return (this == (PointF) o);
216 /// GetHashCode Method
220 /// Calculates a hashing value.
223 public override int GetHashCode ()
225 return (int) x ^ (int) y;
233 /// Formats the PointF as a string in coordinate notation.
236 public override string ToString ()
238 return String.Format ("{{X={0}, Y={1}}}", x.ToString (CultureInfo.CurrentCulture),
239 y.ToString (CultureInfo.CurrentCulture));
243 public static PointF Add (PointF pt, Size sz)
245 return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
248 public static PointF Add (PointF pt, SizeF sz)
250 return new PointF (pt.X + sz.Width, pt.Y + sz.Height);
253 public static PointF Subtract (PointF pt, Size sz)
255 return new PointF (pt.X - sz.Width, pt.Y - sz.Height);
258 public static PointF Subtract (PointF pt, SizeF sz)
260 return new PointF (pt.X - sz.Width, pt.Y - sz.Height);