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-rw-r--r-- | OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/OlsenSphere.cs | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/OlsenSphere.cs b/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/OlsenSphere.cs deleted file mode 100644 index 153fc15..0000000 --- a/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/OlsenSphere.cs +++ /dev/null | |||
@@ -1,225 +0,0 @@ | |||
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 | |||
28 | using System; | ||
29 | using OpenSim.Region.Environment.Interfaces; | ||
30 | |||
31 | namespace OpenSim.Region.Environment.Modules.Terrain.PaintBrushes | ||
32 | { | ||
33 | /// <summary> | ||
34 | /// Speed-Optimised Hybrid Erosion Brush | ||
35 | /// | ||
36 | /// As per Jacob Olsen's Paper | ||
37 | /// http://www.oddlabs.com/download/terrain_generation.pdf | ||
38 | /// </summary> | ||
39 | public class OlsenSphere : ITerrainPaintableEffect | ||
40 | { | ||
41 | private double nConst = 1024.0; | ||
42 | private NeighbourSystem type = NeighbourSystem.Moore; // Parameter | ||
43 | |||
44 | #region Supporting Functions | ||
45 | |||
46 | private int[] Neighbours(NeighbourSystem type, int index) | ||
47 | { | ||
48 | int[] coord = new int[2]; | ||
49 | |||
50 | index++; | ||
51 | |||
52 | switch (type) | ||
53 | { | ||
54 | case NeighbourSystem.Moore: | ||
55 | switch (index) | ||
56 | { | ||
57 | case 1: | ||
58 | coord[0] = -1; | ||
59 | coord[1] = -1; | ||
60 | break; | ||
61 | |||
62 | case 2: | ||
63 | coord[0] = -0; | ||
64 | coord[1] = -1; | ||
65 | break; | ||
66 | |||
67 | case 3: | ||
68 | coord[0] = +1; | ||
69 | coord[1] = -1; | ||
70 | break; | ||
71 | |||
72 | case 4: | ||
73 | coord[0] = -1; | ||
74 | coord[1] = -0; | ||
75 | break; | ||
76 | |||
77 | case 5: | ||
78 | coord[0] = -0; | ||
79 | coord[1] = -0; | ||
80 | break; | ||
81 | |||
82 | case 6: | ||
83 | coord[0] = +1; | ||
84 | coord[1] = -0; | ||
85 | break; | ||
86 | |||
87 | case 7: | ||
88 | coord[0] = -1; | ||
89 | coord[1] = +1; | ||
90 | break; | ||
91 | |||
92 | case 8: | ||
93 | coord[0] = -0; | ||
94 | coord[1] = +1; | ||
95 | break; | ||
96 | |||
97 | case 9: | ||
98 | coord[0] = +1; | ||
99 | coord[1] = +1; | ||
100 | break; | ||
101 | |||
102 | default: | ||
103 | break; | ||
104 | } | ||
105 | break; | ||
106 | |||
107 | case NeighbourSystem.VonNeumann: | ||
108 | switch (index) | ||
109 | { | ||
110 | case 1: | ||
111 | coord[0] = 0; | ||
112 | coord[1] = -1; | ||
113 | break; | ||
114 | |||
115 | case 2: | ||
116 | coord[0] = -1; | ||
117 | coord[1] = 0; | ||
118 | break; | ||
119 | |||
120 | case 3: | ||
121 | coord[0] = +1; | ||
122 | coord[1] = 0; | ||
123 | break; | ||
124 | |||
125 | case 4: | ||
126 | coord[0] = 0; | ||
127 | coord[1] = +1; | ||
128 | break; | ||
129 | |||
130 | case 5: | ||
131 | coord[0] = -0; | ||
132 | coord[1] = -0; | ||
133 | break; | ||
134 | |||
135 | default: | ||
136 | break; | ||
137 | } | ||
138 | break; | ||
139 | } | ||
140 | |||
141 | return coord; | ||
142 | } | ||
143 | |||
144 | private double SphericalFactor(double x, double y, double rx, double ry, double size) | ||
145 | { | ||
146 | double z = size * size - ((x - rx) * (x - rx) + (y - ry) * (y - ry)); | ||
147 | return z; | ||
148 | } | ||
149 | |||
150 | private enum NeighbourSystem | ||
151 | { | ||
152 | Moore, | ||
153 | VonNeumann | ||
154 | } ; | ||
155 | |||
156 | #endregion | ||
157 | |||
158 | #region ITerrainPaintableEffect Members | ||
159 | |||
160 | public void PaintEffect(ITerrainChannel map, double rx, double ry, double strength, double duration) | ||
161 | { | ||
162 | strength = TerrainUtil.MetersToSphericalStrength(strength); | ||
163 | |||
164 | int x, y; | ||
165 | |||
166 | for (x = 0; x < map.Width; x++) | ||
167 | { | ||
168 | for (y = 0; y < map.Height; y++) | ||
169 | { | ||
170 | double z = SphericalFactor(x, y, rx, ry, strength); | ||
171 | |||
172 | if (z > 0) // add in non-zero amount | ||
173 | { | ||
174 | int NEIGHBOUR_ME = 4; | ||
175 | int NEIGHBOUR_MAX = type == NeighbourSystem.Moore ? 9 : 5; | ||
176 | |||
177 | double max = Double.MinValue; | ||
178 | int loc = 0; | ||
179 | double cellmax = 0; | ||
180 | |||
181 | |||
182 | for (int j = 0; j < NEIGHBOUR_MAX; j++) | ||
183 | { | ||
184 | if (j != NEIGHBOUR_ME) | ||
185 | { | ||
186 | int[] coords = Neighbours(type, j); | ||
187 | |||
188 | coords[0] += x; | ||
189 | coords[1] += y; | ||
190 | |||
191 | if (coords[0] > map.Width - 1) | ||
192 | continue; | ||
193 | if (coords[1] > map.Height - 1) | ||
194 | continue; | ||
195 | if (coords[0] < 0) | ||
196 | continue; | ||
197 | if (coords[1] < 0) | ||
198 | continue; | ||
199 | |||
200 | cellmax = map[x, y] - map[coords[0], coords[1]]; | ||
201 | if (cellmax > max) | ||
202 | { | ||
203 | max = cellmax; | ||
204 | loc = j; | ||
205 | } | ||
206 | } | ||
207 | } | ||
208 | |||
209 | double T = nConst / ((map.Width + map.Height) / 2); | ||
210 | // Apply results | ||
211 | if (0 < max && max <= T) | ||
212 | { | ||
213 | int[] maxCoords = Neighbours(type, loc); | ||
214 | double heightDelta = 0.5 * max * z * duration; | ||
215 | map[x, y] -= heightDelta; | ||
216 | map[x + maxCoords[0], y + maxCoords[1]] += heightDelta; | ||
217 | } | ||
218 | } | ||
219 | } | ||
220 | } | ||
221 | } | ||
222 | |||
223 | #endregion | ||
224 | } | ||
225 | } \ No newline at end of file | ||