diff options
Diffstat (limited to 'OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/SmoothArea.cs')
-rw-r--r-- | OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/SmoothArea.cs | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/SmoothArea.cs b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/SmoothArea.cs new file mode 100644 index 0000000..aa685e4 --- /dev/null +++ b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/SmoothArea.cs | |||
@@ -0,0 +1,107 @@ | |||
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 OpenSim.Region.Environment.Interfaces; | ||
29 | |||
30 | namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes | ||
31 | { | ||
32 | public class SmoothArea : ITerrainFloodEffect | ||
33 | { | ||
34 | private double GetBilinearInterpolate(double x, double y, ITerrainChannel map) | ||
35 | { | ||
36 | int w = map.Width; | ||
37 | int h = map.Height; | ||
38 | |||
39 | if (x > w - 2.0) | ||
40 | x = w - 2.0; | ||
41 | if (y > h - 2.0) | ||
42 | y = h - 2.0; | ||
43 | if (x < 0.0) | ||
44 | x = 0.0; | ||
45 | if (y < 0.0) | ||
46 | y = 0.0; | ||
47 | |||
48 | int stepSize = 1; | ||
49 | double h00 = map[(int)x, (int)y]; | ||
50 | double h10 = map[(int)x + stepSize, (int)y]; | ||
51 | double h01 = map[(int)x, (int)y + stepSize]; | ||
52 | double h11 = map[(int)x + stepSize, (int)y + stepSize]; | ||
53 | double h1 = h00; | ||
54 | double h2 = h10; | ||
55 | double h3 = h01; | ||
56 | double h4 = h11; | ||
57 | double a00 = h1; | ||
58 | double a10 = h2 - h1; | ||
59 | double a01 = h3 - h1; | ||
60 | double a11 = h1 - h2 - h3 + h4; | ||
61 | double partialx = x - (int)x; | ||
62 | double partialz = y - (int)y; | ||
63 | double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz); | ||
64 | return hi; | ||
65 | } | ||
66 | |||
67 | #region ITerrainFloodEffect Members | ||
68 | |||
69 | public void FloodEffect(ITerrainChannel map, bool[,] fillArea, double strength) | ||
70 | { | ||
71 | double area = strength; | ||
72 | double step = strength / 4.0; | ||
73 | |||
74 | double[,] manipulate = new double[map.Width, map.Height]; | ||
75 | int x, y; | ||
76 | double n, l; | ||
77 | for (x = 0; x < map.Width; x++) | ||
78 | { | ||
79 | for (y = 0; y < map.Height; y++) | ||
80 | { | ||
81 | double average = 0.0; | ||
82 | int avgsteps = 0; | ||
83 | |||
84 | for (n = 0.0 - area; n < area; n += step) | ||
85 | { | ||
86 | for (l = 0.0 - area; l < area; l += step) | ||
87 | { | ||
88 | avgsteps++; | ||
89 | average += GetBilinearInterpolate(x + n, y + l, map); | ||
90 | } | ||
91 | } | ||
92 | |||
93 | manipulate[x, y] = average / avgsteps; | ||
94 | } | ||
95 | } | ||
96 | for (x = 0; x < map.Width; x++) | ||
97 | { | ||
98 | for (y = 0; y < map.Height; y++) | ||
99 | { | ||
100 | map[x, y] = manipulate[x, y]; | ||
101 | } | ||
102 | } | ||
103 | } | ||
104 | |||
105 | #endregion | ||
106 | } | ||
107 | } \ No newline at end of file | ||