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-rw-r--r--OpenSim/Framework/Util.cs33
1 files changed, 33 insertions, 0 deletions
diff --git a/OpenSim/Framework/Util.cs b/OpenSim/Framework/Util.cs
index 58344f3..45b5a10 100644
--- a/OpenSim/Framework/Util.cs
+++ b/OpenSim/Framework/Util.cs
@@ -70,6 +70,39 @@ namespace OpenSim.Framework
70 public static readonly Regex UUIDPattern 70 public static readonly Regex UUIDPattern
71 = new Regex("^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$"); 71 = new Regex("^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$");
72 72
73 /// <summary>
74 /// Linear interpolates B<->C using percent A
75 /// </summary>
76 /// <param name="a"></param>
77 /// <param name="b"></param>
78 /// <param name="c"></param>
79 /// <returns></returns>
80 public static double lerp(double a, double b, double c)
81 {
82 return (b*a) + (c*(1 - a));
83 }
84
85 /// <summary>
86 /// Bilinear Interpolate, see Lerp but for 2D using 'percents' X & Y.
87 /// Layout:
88 /// A B
89 /// C D
90 /// A<->C = Y
91 /// C<->D = X
92 /// </summary>
93 /// <param name="x"></param>
94 /// <param name="y"></param>
95 /// <param name="a"></param>
96 /// <param name="b"></param>
97 /// <param name="c"></param>
98 /// <param name="d"></param>
99 /// <returns></returns>
100 public static double lerp2D(double x, double y, double a, double b, double c, double d)
101 {
102 return lerp(y, lerp(x, a, b), lerp(x, c, d));
103 }
104
105
73 /// <value> 106 /// <value>
74 /// Well known UUID for the blank texture used in the Linden SL viewer version 1.20 (and hopefully onwards) 107 /// Well known UUID for the blank texture used in the Linden SL viewer version 1.20 (and hopefully onwards)
75 /// </value> 108 /// </value>