/Main/src/DynamicDataDisplay/Common/Auxiliary/MathHelper.cs

 1using System;
 2using System.Windows;
 3
 4namespace Microsoft.Research.DynamicDataDisplay
 5{
 6	public static class MathHelper
 7	{
 8		public static long Clamp(long value, long min, long max)
 9		{
10			return Math.Max(min, Math.Min(value, max));
11		}
12
13		public static double Clamp(double value, double min, double max)
14		{
15			return Math.Max(min, Math.Min(value, max));
16		}
17
18		/// <summary>Clamps specified value to [0,1]</summary>
19		/// <param name="d">Value to clamp</param>
20		/// <returns>Value in range [0,1]</returns>
21		public static double Clamp(double value)
22		{
23			return Math.Max(0, Math.Min(value, 1));
24		}
25
26		public static int Clamp(int value, int min, int max)
27		{
28			return Math.Max(min, Math.Min(value, max));
29		}
30
31		public static Rect CreateRectByPoints(double xMin, double yMin, double xMax, double yMax)
32		{
33			return new Rect(new Point(xMin, yMin), new Point(xMax, yMax));
34		}
35
36		public static double Interpolate(double start, double end, double ratio)
37		{
38			return start * (1 - ratio) + end * ratio;
39		}
40
41		public static double RadiansToDegrees(this double radians)
42		{
43			return radians * 180 / Math.PI;
44		}
45
46		public static double DegreesToRadians(this double degrees)
47		{
48			return degrees / 180 * Math.PI;
49		}
50
51		/// <summary>
52		/// Converts vector into angle.
53		/// </summary>
54		/// <param name="vector">The vector.</param>
55		/// <returns>Angle in degrees.</returns>
56		public static double ToAngle(this Vector vector)
57		{
58			return Math.Atan2(-vector.Y, vector.X).RadiansToDegrees();
59		}
60
61		public static Point ToPoint(this Vector v)
62		{
63			return new Point(v.X, v.Y);
64		}
65
66		public static bool IsNaN(this double d)
67		{
68			return Double.IsNaN(d);
69		}
70
71		public static bool IsNotNaN(this double d)
72		{
73			return !Double.IsNaN(d);
74		}
75
76		public static bool IsFinite(this double d)
77		{
78			return !Double.IsNaN(d) && !Double.IsInfinity(d);
79		}
80
81		public static bool IsInfinite(this double d)
82		{
83			return Double.IsInfinity(d);
84		}
85
86		public static bool AreClose(double d1, double d2, double diffRatio)
87		{
88			return Math.Abs(d1 / d2 - 1) < diffRatio;
89		}
90	}
91}