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authorAdam Frisby2008-03-14 13:37:39 +0000
committerAdam Frisby2008-03-14 13:37:39 +0000
commit53e8d91c06b3fc5cf61ba767930fa733a6efb232 (patch)
tree28db1d0e7e96c737da680bef72de527e2dacfb8f /OpenSim
parent* Added proper handling of llSetStatus(STATUS_PHYSICS,BOOL) (diff)
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* Fixed 'flatten area' brush, so it now has a 'force' instead of instantly flattening the selected area.
* Noise, and Noise-Area brushes now use Perlin noise, more closely simulating the method LL uses officially. * TerrainModule has been cleaned up slightly. * TerrainUtil class has several new functions related to seeded noise generation. * Extracted ITerrainEffect, ITerrainFloodEffect, ITerrainLoader, ITerrainPaintableEffect, TerrainChannel to seperate files.
Diffstat (limited to 'OpenSim')
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/FlattenArea.cs4
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/NoiseArea.cs67
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/ITerrainEffect.cs36
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/ITerrainFloodEffect.cs37
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/ITerrainLoader.cs37
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/ITerrainPaintableEffect.cs36
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/NoiseSphere.cs9
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs119
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs149
-rw-r--r--OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs55
10 files changed, 336 insertions, 213 deletions
diff --git a/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/FlattenArea.cs b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/FlattenArea.cs
index 4551f53..007d37e 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/FlattenArea.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/FlattenArea.cs
@@ -58,12 +58,14 @@ namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes
58 58
59 avg = sum / steps; 59 avg = sum / steps;
60 60
61 double str = 0.1 * strength; // == 0.2 in the default client
62
61 for (x = 0; x < map.Width; x++) 63 for (x = 0; x < map.Width; x++)
62 { 64 {
63 for (y = 0; y < map.Height; y++) 65 for (y = 0; y < map.Height; y++)
64 { 66 {
65 if (fillArea[x, y] == true) 67 if (fillArea[x, y] == true)
66 map[x, y] = avg; 68 map[x, y] = (map[x, y] * (1.0 - str)) + (avg * str);
67 } 69 }
68 } 70 }
69 } 71 }
diff --git a/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/NoiseArea.cs b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/NoiseArea.cs
index 6063b2f..95ad57d 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/NoiseArea.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/NoiseArea.cs
@@ -31,65 +31,6 @@ namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes
31{ 31{
32 public class NoiseArea : ITerrainFloodEffect 32 public class NoiseArea : ITerrainFloodEffect
33 { 33 {
34 private double Noise(int x, int y)
35 {
36 // TODO: Seed
37 int n = x + y * 57;
38 n = (n<<13) ^ n;
39 return (1.0 - ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0);
40 }
41
42 private double SmoothedNoise1(int x, int y)
43 {
44 double corners = (Noise(x - 1, y - 1) + Noise(x + 1, y - 1) + Noise(x - 1, y + 1) + Noise(x + 1, y + 1)) / 16;
45 double sides = (Noise(x - 1, y) + Noise(x + 1, y) + Noise(x, y - 1) + Noise(x, y + 1)) / 8;
46 double center = Noise(x, y) / 4;
47 return corners + sides + center;
48 }
49
50 private double Interpolate(double x, double y, double z)
51 {
52 return (x * (1.0 - z)) + (y * z);
53 }
54
55 private double InterpolatedNoise(double x, double y)
56 {
57 int integer_X = (int)(x);
58 double fractional_X = x - integer_X;
59
60 int integer_Y = (int)y;
61 double fractional_Y = y - integer_Y;
62
63 double v1 = SmoothedNoise1(integer_X, integer_Y);
64 double v2 = SmoothedNoise1(integer_X + 1, integer_Y);
65 double v3 = SmoothedNoise1(integer_X, integer_Y + 1);
66 double v4 = SmoothedNoise1(integer_X + 1, integer_Y + 1);
67
68 double i1 = Interpolate(v1, v2, fractional_X);
69 double i2 = Interpolate(v3, v4, fractional_X);
70
71 return Interpolate(i1, i2, fractional_Y);
72 }
73
74 private double PerlinNoise2D(double x, double y)
75 {
76 int octaves = 1;
77 double persistence = 0.0005;
78
79 double frequency = 0.0;
80 double amplitude = 0.0;
81 double total = 0.0;
82
83 for (int i = 0; i < octaves; i++)
84 {
85 frequency = System.Math.Pow(2, i);
86 amplitude = System.Math.Pow(persistence, i);
87
88 total += InterpolatedNoise(x * frequency, y * frequency) * amplitude;
89 }
90 return total;
91 }
92
93 #region ITerrainFloodEffect Members 34 #region ITerrainFloodEffect Members
94 35
95 public void FloodEffect(ITerrainChannel map, bool[,] fillArea, double strength) 36 public void FloodEffect(ITerrainChannel map, bool[,] fillArea, double strength)
@@ -101,11 +42,9 @@ namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes
101 { 42 {
102 if (fillArea[x, y] == true) 43 if (fillArea[x, y] == true)
103 { 44 {
104 lock (OpenSim.Framework.Util.RandomClass) 45 double noise = TerrainUtil.PerlinNoise2D((double)x / (double)Framework.Constants.RegionSize, (double)y / (double)Framework.Constants.RegionSize, 8, 1.0);
105 { 46
106 double noise = PerlinNoise2D(x, y);//OpenSim.Framework.Util.RandomClass.NextDouble(); 47 map[x, y] += noise * strength;
107 map[x, y] += (noise /*- 0.5*/) * strength;
108 }
109 } 48 }
110 } 49 }
111 } 50 }
diff --git a/OpenSim/Region/Environment/Modules/Terrain/ITerrainEffect.cs b/OpenSim/Region/Environment/Modules/Terrain/ITerrainEffect.cs
new file mode 100644
index 0000000..e7fcf68
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/Terrain/ITerrainEffect.cs
@@ -0,0 +1,36 @@
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 OpenSim 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*/
28using OpenSim.Region.Environment.Interfaces;
29
30namespace OpenSim.Region.Environment.Modules.Terrain
31{
32 public interface ITerrainEffect
33 {
34 void RunEffect(ITerrainChannel map, double strength);
35 }
36}
diff --git a/OpenSim/Region/Environment/Modules/Terrain/ITerrainFloodEffect.cs b/OpenSim/Region/Environment/Modules/Terrain/ITerrainFloodEffect.cs
new file mode 100644
index 0000000..aabd19b
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/Terrain/ITerrainFloodEffect.cs
@@ -0,0 +1,37 @@
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 OpenSim 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*/
28using OpenSim.Region.Environment.Interfaces;
29using System;
30
31namespace OpenSim.Region.Environment.Modules.Terrain
32{
33 public interface ITerrainFloodEffect
34 {
35 void FloodEffect(ITerrainChannel map, Boolean[,] fillArea, double strength);
36 }
37}
diff --git a/OpenSim/Region/Environment/Modules/Terrain/ITerrainLoader.cs b/OpenSim/Region/Environment/Modules/Terrain/ITerrainLoader.cs
new file mode 100644
index 0000000..b67c8f2
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/Terrain/ITerrainLoader.cs
@@ -0,0 +1,37 @@
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 OpenSim 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*/
28using OpenSim.Region.Environment.Interfaces;
29
30namespace OpenSim.Region.Environment.Modules.Terrain
31{
32 public interface ITerrainLoader
33 {
34 ITerrainChannel LoadFile(string filename);
35 void SaveFile(string filename, ITerrainChannel map);
36 }
37}
diff --git a/OpenSim/Region/Environment/Modules/Terrain/ITerrainPaintableEffect.cs b/OpenSim/Region/Environment/Modules/Terrain/ITerrainPaintableEffect.cs
new file mode 100644
index 0000000..cf1ea4e
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/Terrain/ITerrainPaintableEffect.cs
@@ -0,0 +1,36 @@
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 OpenSim 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*/
28using OpenSim.Region.Environment.Interfaces;
29
30namespace OpenSim.Region.Environment.Modules.Terrain
31{
32 public interface ITerrainPaintableEffect
33 {
34 void PaintEffect(ITerrainChannel map, double x, double y, double strength, double duration);
35 }
36}
diff --git a/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/NoiseSphere.cs b/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/NoiseSphere.cs
index 4a03a17..9754a99 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/NoiseSphere.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/NoiseSphere.cs
@@ -57,15 +57,10 @@ namespace OpenSim.Region.Environment.Modules.Terrain.PaintBrushes
57 z *= z; 57 z *= z;
58 z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry)); 58 z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry));
59 59
60 double noise; 60 double noise = TerrainUtil.PerlinNoise2D((double)x / (double)Framework.Constants.RegionSize, (double)y / (double)Framework.Constants.RegionSize, 8, 1.0);
61
62 lock (Util.RandomClass)
63 {
64 noise = Util.RandomClass.NextDouble();
65 }
66 61
67 if (z > 0.0) 62 if (z > 0.0)
68 map[x, y] += (noise - 0.5) * z * duration; 63 map[x, y] += noise * z * duration;
69 } 64 }
70 } 65 }
71 } 66 }
diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs
new file mode 100644
index 0000000..59937d1
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs
@@ -0,0 +1,119 @@
1
2using OpenSim.Framework;
3using OpenSim.Region.Environment.Interfaces;
4
5namespace OpenSim.Region.Environment.Modules.Terrain
6{
7
8 /// <summary>
9 /// A new version of the old Channel class, simplified
10 /// </summary>
11 public class TerrainChannel : ITerrainChannel
12 {
13 private double[,] map;
14 private bool[,] taint;
15
16 public int Width
17 {
18 get { return map.GetLength(0); }
19 }
20
21 public int Height
22 {
23 get { return map.GetLength(1); }
24 }
25
26 public TerrainChannel Copy()
27 {
28 TerrainChannel copy = new TerrainChannel(false);
29 copy.map = (double[,])this.map.Clone();
30
31 return copy;
32 }
33
34 public float[] GetFloatsSerialised()
35 {
36 float[] heights = new float[Width * Height];
37 int i;
38
39 for (i = 0; i < Width * Height; i++)
40 {
41 heights[i] = (float)map[i % Width, i / Width];
42 }
43
44 return heights;
45 }
46
47 public double[,] GetDoubles()
48 {
49 return map;
50 }
51
52 public double this[int x, int y]
53 {
54 get
55 {
56 return map[x, y];
57 }
58 set
59 {
60 if (map[x, y] != value)
61 {
62 taint[x / 16, y / 16] = true;
63 map[x, y] = value;
64 }
65 }
66 }
67
68 public bool Tainted(int x, int y)
69 {
70 if (taint[x / 16, y / 16] != false)
71 {
72 taint[x / 16, y / 16] = false;
73 return true;
74 }
75 else
76 {
77 return false;
78 }
79 }
80
81 public TerrainChannel()
82 {
83 map = new double[Constants.RegionSize, Constants.RegionSize];
84 taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
85
86 int x, y;
87 for (x = 0; x < Constants.RegionSize; x++)
88 {
89 for (y = 0; y < Constants.RegionSize; y++)
90 {
91 map[x, y] = 60.0 - // 60 = Sphere Radius
92 ((x - (Constants.RegionSize / 2)) * (x - (Constants.RegionSize / 2)) +
93 (y - (Constants.RegionSize / 2)) * (y - (Constants.RegionSize / 2)));
94 }
95 }
96 }
97
98 public TerrainChannel(double[,] import)
99 {
100 map = import;
101 taint = new bool[import.GetLength(0), import.GetLength(1)];
102 }
103
104 public TerrainChannel(bool createMap)
105 {
106 if (createMap)
107 {
108 map = new double[Constants.RegionSize, Constants.RegionSize];
109 taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
110 }
111 }
112
113 public TerrainChannel(int w, int h)
114 {
115 map = new double[w, h];
116 taint = new bool[w / 16, h / 16];
117 }
118 }
119}
diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
index 83c6658..5931552 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
@@ -36,151 +36,18 @@ using OpenSim.Region.Environment.Scenes;
36 36
37namespace OpenSim.Region.Environment.Modules.Terrain 37namespace OpenSim.Region.Environment.Modules.Terrain
38{ 38{
39 public interface ITerrainPaintableEffect 39 public class TerrainModule : IRegionModule
40 {
41 void PaintEffect(ITerrainChannel map, double x, double y, double strength, double duration);
42 }
43
44 public interface ITerrainFloodEffect
45 {
46 void FloodEffect(ITerrainChannel map, Boolean[,] fillArea, double strength);
47 }
48
49 public interface ITerrainEffect
50 {
51 void RunEffect(ITerrainChannel map, double strength);
52 }
53
54 public interface ITerrainLoader
55 {
56 ITerrainChannel LoadFile(string filename);
57 void SaveFile(string filename, ITerrainChannel map);
58 }
59
60 /// <summary>
61 /// A new version of the old Channel class, simplified
62 /// </summary>
63 public class TerrainChannel : ITerrainChannel
64 { 40 {
65 private double[,] map; 41 public enum StandardTerrainEffects : byte
66 private bool[,] taint;
67
68 public int Width
69 {
70 get { return map.GetLength(0); }
71 }
72
73 public int Height
74 {
75 get { return map.GetLength(1); }
76 }
77
78 public TerrainChannel Copy()
79 {
80 TerrainChannel copy = new TerrainChannel(false);
81 copy.map = (double[,])this.map.Clone();
82
83 return copy;
84 }
85
86 public float[] GetFloatsSerialised()
87 {
88 float[] heights = new float[Width * Height];
89 int i;
90
91 for (i = 0; i < Width * Height; i++)
92 {
93 heights[i] = (float)map[i % Width, i / Width];
94 }
95
96 return heights;
97 }
98
99 public double[,] GetDoubles()
100 {
101 return map;
102 }
103
104 public double this[int x, int y]
105 {
106 get
107 {
108 return map[x, y];
109 }
110 set
111 {
112 if (map[x, y] != value)
113 {
114 taint[x / 16, y / 16] = true;
115 map[x, y] = value;
116 }
117 }
118 }
119
120 public bool Tainted(int x, int y)
121 { 42 {
122 if (taint[x / 16, y / 16] != false) 43 Flatten = 0,
123 { 44 Raise = 1,
124 taint[x / 16, y / 16] = false; 45 Lower = 2,
125 return true; 46 Smooth = 3,
126 } 47 Noise = 4,
127 else 48 Revert = 5
128 {
129 return false;
130 }
131 } 49 }
132 50
133 public TerrainChannel()
134 {
135 map = new double[Constants.RegionSize, Constants.RegionSize];
136 taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
137
138 int x, y;
139 for (x = 0; x < Constants.RegionSize; x++)
140 {
141 for (y = 0; y < Constants.RegionSize; y++)
142 {
143 map[x, y] = 60.0 - // 60 = Sphere Radius
144 ((x - (Constants.RegionSize / 2)) * (x - (Constants.RegionSize / 2)) +
145 (y - (Constants.RegionSize / 2)) * (y - (Constants.RegionSize / 2)));
146 }
147 }
148 }
149
150 public TerrainChannel(double[,] import)
151 {
152 map = import;
153 taint = new bool[import.GetLength(0), import.GetLength(1)];
154 }
155
156 public TerrainChannel(bool createMap)
157 {
158 if (createMap)
159 {
160 map = new double[Constants.RegionSize, Constants.RegionSize];
161 taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
162 }
163 }
164
165 public TerrainChannel(int w, int h)
166 {
167 map = new double[w, h];
168 taint = new bool[w / 16, h / 16];
169 }
170 }
171
172 public enum StandardTerrainEffects : byte
173 {
174 Flatten = 0,
175 Raise = 1,
176 Lower = 2,
177 Smooth = 3,
178 Noise = 4,
179 Revert = 5
180 }
181
182 public class TerrainModule : IRegionModule
183 {
184 private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); 51 private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
185 52
186 private Dictionary<StandardTerrainEffects, ITerrainPaintableEffect> m_painteffects = 53 private Dictionary<StandardTerrainEffects, ITerrainPaintableEffect> m_painteffects =
diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
index 23ab321..55265d9 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
@@ -47,5 +47,60 @@ namespace OpenSim.Region.Environment.Modules.Terrain
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
51 private static double Noise(double x, double y)
52 {
53 int n = (int)x + (int)(y * 749);
54 n = (n << 13) ^ n;
55 return (1.0 - ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0);
56 }
57
58 private static double SmoothedNoise1(double x, double y)
59 {
60 double corners = (Noise(x - 1, y - 1) + Noise(x + 1, y - 1) + Noise(x - 1, y + 1) + Noise(x + 1, y + 1)) / 16;
61 double sides = (Noise(x - 1, y) + Noise(x + 1, y) + Noise(x, y - 1) + Noise(x, y + 1)) / 8;
62 double center = Noise(x, y) / 4;
63 return corners + sides + center;
64 }
65
66 private static double Interpolate(double x, double y, double z)
67 {
68 return (x * (1.0 - z)) + (y * z);
69 }
70
71 private static double InterpolatedNoise(double x, double y)
72 {
73 int integer_X = (int)(x);
74 double fractional_X = x - integer_X;
75
76 int integer_Y = (int)y;
77 double fractional_Y = y - integer_Y;
78
79 double v1 = SmoothedNoise1(integer_X, integer_Y);
80 double v2 = SmoothedNoise1(integer_X + 1, integer_Y);
81 double v3 = SmoothedNoise1(integer_X, integer_Y + 1);
82 double v4 = SmoothedNoise1(integer_X + 1, integer_Y + 1);
83
84 double i1 = Interpolate(v1, v2, fractional_X);
85 double i2 = Interpolate(v3, v4, fractional_X);
86
87 return Interpolate(i1, i2, fractional_Y);
88 }
89
90 public static double PerlinNoise2D(double x, double y, int octaves, double persistence)
91 {
92 double frequency = 0.0;
93 double amplitude = 0.0;
94 double total = 0.0;
95
96 for (int i = 0; i < octaves; i++)
97 {
98 frequency = System.Math.Pow(2, i);
99 amplitude = System.Math.Pow(persistence, i);
100
101 total += InterpolatedNoise(x * frequency, y * frequency) * amplitude;
102 }
103 return total;
104 }
50 } 105 }
51} 106}
generated by cgit v1.1 at 2024-07-02 23:30:27 +0000