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authorAdam Frisby2008-03-12 11:02:30 +0000
committerAdam Frisby2008-03-12 11:02:30 +0000
commit8e27656fcc0331c8521e4ef8e8ece4495f1f32ae (patch)
tree560a7511ec1a7a7e26c540d7ca042825b2f10e1e /OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
parent* Renamed Main.cs to GridServerBase.cs (diff)
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* Refactored some terrain brushes to move out some common functions into TerrainUtil class. More needs doing.
* Adjusted strength of brushes to Math.Pow(2,size), this should in theory work closer to how it was before.
Diffstat (limited to 'OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs')
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs51
1 files changed, 51 insertions, 0 deletions
diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
new file mode 100644
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+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
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1using System;
2using OpenSim.Region.Environment.Interfaces;
3
4namespace OpenSim.Region.Environment.Modules.Terrain
5{
6 public static class TerrainUtil
7 {
8 public static double MetersToSphericalStrength(double size)
9 {
10 return Math.Pow(2, size);
11 }
12
13 public static double SphericalFactor(double x, double y, double rx, double ry, double size)
14 {
15 return size * size - ((x - rx) * (x - rx) + (y - ry) * (y - ry));
16 }
17
18 public static double GetBilinearInterpolate(double x, double y, ITerrainChannel map)
19 {
20 int w = map.Width;
21 int h = map.Height;
22
23 if (x > w - 2.0)
24 x = w - 2.0;
25 if (y > h - 2.0)
26 y = h - 2.0;
27 if (x < 0.0)
28 x = 0.0;
29 if (y < 0.0)
30 y = 0.0;
31
32 int stepSize = 1;
33 double h00 = map[(int)x, (int)y];
34 double h10 = map[(int)x + stepSize, (int)y];
35 double h01 = map[(int)x, (int)y + stepSize];
36 double h11 = map[(int)x + stepSize, (int)y + stepSize];
37 double h1 = h00;
38 double h2 = h10;
39 double h3 = h01;
40 double h4 = h11;
41 double a00 = h1;
42 double a10 = h2 - h1;
43 double a01 = h3 - h1;
44 double a11 = h1 - h2 - h3 + h4;
45 double partialx = x - (int)x;
46 double partialz = y - (int)y;
47 double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz);
48 return hi;
49 }
50 }
51}