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-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs102
1 files changed, 51 insertions, 51 deletions
diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
index c52d2c8..23ab321 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
@@ -1,51 +1,51 @@
1using System; 1using System;
2using OpenSim.Region.Environment.Interfaces; 2using OpenSim.Region.Environment.Interfaces;
3 3
4namespace OpenSim.Region.Environment.Modules.Terrain 4namespace OpenSim.Region.Environment.Modules.Terrain
5{ 5{
6 public static class TerrainUtil 6 public static class TerrainUtil
7 { 7 {
8 public static double MetersToSphericalStrength(double size) 8 public static double MetersToSphericalStrength(double size)
9 { 9 {
10 return Math.Pow(2, size); 10 return Math.Pow(2, size);
11 } 11 }
12 12
13 public static double SphericalFactor(double x, double y, double rx, double ry, double size) 13 public static double SphericalFactor(double x, double y, double rx, double ry, double size)
14 { 14 {
15 return size * size - ((x - rx) * (x - rx) + (y - ry) * (y - ry)); 15 return size * size - ((x - rx) * (x - rx) + (y - ry) * (y - ry));
16 } 16 }
17 17
18 public static double GetBilinearInterpolate(double x, double y, ITerrainChannel map) 18 public static double GetBilinearInterpolate(double x, double y, ITerrainChannel map)
19 { 19 {
20 int w = map.Width; 20 int w = map.Width;
21 int h = map.Height; 21 int h = map.Height;
22 22
23 if (x > w - 2.0) 23 if (x > w - 2.0)
24 x = w - 2.0; 24 x = w - 2.0;
25 if (y > h - 2.0) 25 if (y > h - 2.0)
26 y = h - 2.0; 26 y = h - 2.0;
27 if (x < 0.0) 27 if (x < 0.0)
28 x = 0.0; 28 x = 0.0;
29 if (y < 0.0) 29 if (y < 0.0)
30 y = 0.0; 30 y = 0.0;
31 31
32 int stepSize = 1; 32 int stepSize = 1;
33 double h00 = map[(int)x, (int)y]; 33 double h00 = map[(int)x, (int)y];
34 double h10 = map[(int)x + stepSize, (int)y]; 34 double h10 = map[(int)x + stepSize, (int)y];
35 double h01 = map[(int)x, (int)y + stepSize]; 35 double h01 = map[(int)x, (int)y + stepSize];
36 double h11 = map[(int)x + stepSize, (int)y + stepSize]; 36 double h11 = map[(int)x + stepSize, (int)y + stepSize];
37 double h1 = h00; 37 double h1 = h00;
38 double h2 = h10; 38 double h2 = h10;
39 double h3 = h01; 39 double h3 = h01;
40 double h4 = h11; 40 double h4 = h11;
41 double a00 = h1; 41 double a00 = h1;
42 double a10 = h2 - h1; 42 double a10 = h2 - h1;
43 double a01 = h3 - h1; 43 double a01 = h3 - h1;
44 double a11 = h1 - h2 - h3 + h4; 44 double a11 = h1 - h2 - h3 + h4;
45 double partialx = x - (int)x; 45 double partialx = x - (int)x;
46 double partialz = y - (int)y; 46 double partialz = y - (int)y;
47 double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz); 47 double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz);
48 return hi; 48 return hi;
49 } 49 }
50 } 50 }
51} 51}