diff options
Diffstat (limited to 'OpenSim/Region/CoreModules/World/Terrain/Modifiers/NoiseModifier.cs')
-rw-r--r-- | OpenSim/Region/CoreModules/World/Terrain/Modifiers/NoiseModifier.cs | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/OpenSim/Region/CoreModules/World/Terrain/Modifiers/NoiseModifier.cs b/OpenSim/Region/CoreModules/World/Terrain/Modifiers/NoiseModifier.cs new file mode 100644 index 0000000..d6b95d0 --- /dev/null +++ b/OpenSim/Region/CoreModules/World/Terrain/Modifiers/NoiseModifier.cs | |||
@@ -0,0 +1,108 @@ | |||
1 | /* | ||
2 | * Copyright (c) Contributors, http://opensimulator.org/ | ||
3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions are met: | ||
7 | * * Redistributions of source code must retain the above copyright | ||
8 | * notice, this list of conditions and the following disclaimer. | ||
9 | * * Redistributions in binary form must reproduce the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer in the | ||
11 | * documentation and/or other materials provided with the distribution. | ||
12 | * * Neither the name of the OpenSimulator Project nor the | ||
13 | * names of its contributors may be used to endorse or promote products | ||
14 | * derived from this software without specific prior written permission. | ||
15 | * | ||
16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY | ||
17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY | ||
20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | ||
23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | using System; | ||
28 | using OpenSim.Region.CoreModules.World.Terrain; | ||
29 | using OpenSim.Region.Framework.Interfaces; | ||
30 | using OpenSim.Region.Framework.Scenes; | ||
31 | |||
32 | namespace OpenSim.Region.CoreModules.World.Terrain.Modifiers | ||
33 | { | ||
34 | public class NoiseModifier : TerrainModifier | ||
35 | { | ||
36 | public NoiseModifier(ITerrainModule module) : base(module) | ||
37 | { | ||
38 | } | ||
39 | |||
40 | public override string ModifyTerrain(ITerrainChannel map, string[] args) | ||
41 | { | ||
42 | string result; | ||
43 | if (args.Length < 3) | ||
44 | { | ||
45 | result = "Usage: " + GetUsage(); | ||
46 | } | ||
47 | else | ||
48 | { | ||
49 | TerrainModifierData data; | ||
50 | result = this.parseParameters(args, out data); | ||
51 | |||
52 | // Context-specific validation | ||
53 | if (result == String.Empty) | ||
54 | { | ||
55 | if (data.bevel == "taper") | ||
56 | { | ||
57 | if (data.bevelevation < 0.0 || data.bevelevation > 1.0) | ||
58 | { | ||
59 | result = String.Format("Taper must be 0.0 to 1.0: {0}", data.bevelevation); | ||
60 | } | ||
61 | } | ||
62 | else | ||
63 | { | ||
64 | data.bevelevation = 1.0f; | ||
65 | } | ||
66 | |||
67 | if (data.elevation < 0.0 || data.elevation > 1.0) | ||
68 | { | ||
69 | result = String.Format("Noise strength must be 0.0 to 1.0: {0}", data.elevation); | ||
70 | } | ||
71 | |||
72 | if (data.shape == String.Empty) | ||
73 | { | ||
74 | data.shape = "rectangle"; | ||
75 | data.x0 = 0; | ||
76 | data.y0 = 0; | ||
77 | data.dx = map.Width; | ||
78 | data.dy = map.Height; | ||
79 | } | ||
80 | } | ||
81 | |||
82 | // if it's all good, then do the work | ||
83 | if (result == String.Empty) | ||
84 | { | ||
85 | this.applyModification(map, data); | ||
86 | } | ||
87 | } | ||
88 | |||
89 | return result; | ||
90 | } | ||
91 | |||
92 | public override string GetUsage() | ||
93 | { | ||
94 | string val = "noise <delta> [ -rec=x1,y1,dx[,dy] | -ell=x0,y0,rx[,ry] ] [-taper=<delta2>]" | ||
95 | + "\nAdds noise to all points within the specified range."; | ||
96 | return val; | ||
97 | } | ||
98 | |||
99 | public override double operate(double[,] map, TerrainModifierData data, int x, int y) | ||
100 | { | ||
101 | double factor = this.computeBevel(data, x, y); | ||
102 | double noise = TerrainUtil.PerlinNoise2D((double)x / map.GetLength(0), (double)y / map.GetLength(1), 8, 1.0); | ||
103 | return map[x, y] + (data.elevation - (data.elevation - data.bevelevation) * factor) * (noise - .5); | ||
104 | } | ||
105 | |||
106 | } | ||
107 | |||
108 | } | ||