1 // Permission is hereby granted, free of charge, to any person obtaining
2 // a copy of this software and associated documentation files (the
3 // "Software"), to deal in the Software without restriction, including
4 // without limitation the rights to use, copy, modify, merge, publish,
5 // distribute, sublicense, and/or sell copies of the Software, and to
6 // permit persons to whom the Software is furnished to do so, subject to
7 // the following conditions:
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 // Copyright (c) 2007 Novell, Inc. (http://www.novell.com)
23 // Chris Toshok (toshok@novell.com)
27 using System.ComponentModel;
28 using System.Windows.Converters;
29 using System.Windows.Markup;
30 using System.Windows.Media;
32 namespace System.Windows {
35 [ValueSerializer (typeof (VectorValueSerializer))]
36 [TypeConverter (typeof (VectorConverter))]
37 public struct Vector : IFormattable
39 public Vector (double x, double y)
45 public bool Equals (Vector value)
47 return _x == value.X && _y == value.Y;
50 public override bool Equals (object o)
55 return Equals ((Vector)o);
58 public override int GetHashCode ()
60 throw new NotImplementedException ();
63 string IFormattable.ToString (string format, IFormatProvider provider)
65 return string.Format (provider, "{0:" + format + "},{1:" + format + "}", _x, _y);
68 public static bool Equals (Vector vector1, Vector vector2)
70 return vector1.Equals (vector2);
73 public static Point Add (Vector vector, Point point)
75 return new Point (vector.X + point.X, vector.Y + point.Y);
78 public static Vector Add (Vector vector1, Vector vector2)
80 return new Vector (vector1.X + vector2.X,
81 vector1.Y + vector2.Y);
84 public static double AngleBetween (Vector vector1, Vector vector2)
86 double cos_theta = (vector1.X * vector2.X + vector1.Y * vector2.Y) / (vector1.Length * vector2.Length);
88 return Math.Acos (cos_theta) / Math.PI * 180;
91 public static double CrossProduct (Vector vector1, Vector vector2)
93 // ... what operation is this exactly?
94 return vector1.X * vector2.Y - vector1.Y * vector2.X;
97 public static double Determinant (Vector vector1, Vector vector2)
99 // same as CrossProduct, it appears.
100 return vector1.X * vector2.Y - vector1.Y * vector2.X;
103 public static Vector Divide (Vector vector, double scalar)
105 return new Vector (vector.X / scalar, vector.Y / scalar);
108 public static double Multiply (Vector vector1, Vector vector2)
110 return vector1.X * vector2.X + vector1.Y * vector2.Y;
113 public static Vector Multiply (Vector vector, Matrix matrix)
115 return new Vector (vector.X * matrix.M11 + vector.Y * matrix.M21,
116 vector.X * matrix.M12 + vector.Y * matrix.M22);
119 public static Vector Multiply (double scalar, Vector vector)
121 return new Vector (scalar * vector.X, scalar * vector.Y);
124 public static Vector Multiply (Vector vector, double scalar)
126 return new Vector (scalar * vector.X, scalar * vector.Y);
129 public void Negate ()
135 public void Normalize ()
137 double ls = LengthSquared;
141 double l = Math.Sqrt (ls);
146 public static Vector Subtract (Vector vector1, Vector vector2)
148 return new Vector (vector1.X - vector2.X, vector1.Y - vector2.Y);
151 public static Vector Parse (string source)
153 throw new NotImplementedException ();
156 public override string ToString ()
158 return String.Format ("{0},{1}", _x, _y);
161 public string ToString (IFormatProvider provider)
163 throw new NotImplementedException ();
166 public double Length {
167 get { return Math.Sqrt (LengthSquared); }
170 public double LengthSquared {
171 get { return _x * _x + _y * _y; }
185 public static explicit operator Point (Vector vector)
187 return new Point (vector.X, vector.Y);
190 public static explicit operator Size (Vector vector)
192 return new Size (vector.X, vector.Y);
195 public static Vector operator - (Vector vector1, Vector vector2)
197 return Subtract (vector1, vector2);
200 public static Vector operator - (Vector vector)
202 Vector result = vector;
207 public static bool operator != (Vector vector1, Vector vector2)
209 return !Equals (vector1, vector2);
212 public static bool operator == (Vector vector1, Vector vector2)
214 return Equals (vector1, vector2);
217 public static double operator * (Vector vector1, Vector vector2)
219 return Multiply (vector1, vector2);
222 public static Vector operator * (Vector vector, Matrix matrix)
224 return Multiply (vector, matrix);
227 public static Vector operator * (double scalar, Vector vector)
229 return Multiply (scalar, vector);
232 public static Vector operator * (Vector vector, double scalar)
234 return Multiply (vector, scalar);
237 public static Vector operator / (Vector vector, double scalar)
239 return Divide (vector, scalar);
242 public static Point operator + (Vector vector, Point point)
244 return Add (vector, point);
247 public static Vector operator + (Vector vector1, Vector vector2)
249 return Add (vector1, vector2);