clockwerk-opensim – Blame information for rev 1
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1 | vero | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using OpenSim.Region.Framework.Interfaces; |
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29 | |||
30 | namespace OpenSim.Region.CoreModules.World.Terrain.FloodBrushes |
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31 | { |
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32 | public class SmoothArea : ITerrainFloodEffect |
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33 | { |
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34 | #region ITerrainFloodEffect Members |
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35 | |||
36 | public void FloodEffect(ITerrainChannel map, bool[,] fillArea, double strength) |
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37 | { |
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38 | double area = strength; |
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39 | double step = strength / 4.0; |
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40 | |||
41 | double[,] manipulate = new double[map.Width,map.Height]; |
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42 | int x, y; |
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43 | for (x = 0; x < map.Width; x++) |
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44 | { |
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45 | for (y = 0; y < map.Height; y++) |
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46 | { |
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47 | if (!fillArea[x, y]) |
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48 | continue; |
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49 | |||
50 | double average = 0.0; |
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51 | int avgsteps = 0; |
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52 | |||
53 | double n; |
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54 | for (n = 0.0 - area; n < area; n += step) |
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55 | { |
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56 | double l; |
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57 | for (l = 0.0 - area; l < area; l += step) |
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58 | { |
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59 | avgsteps++; |
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60 | average += GetBilinearInterpolate(x + n, y + l, map); |
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61 | } |
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62 | } |
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63 | |||
64 | manipulate[x, y] = average / avgsteps; |
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65 | } |
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66 | } |
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67 | for (x = 0; x < map.Width; x++) |
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68 | { |
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69 | for (y = 0; y < map.Height; y++) |
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70 | { |
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71 | if (!fillArea[x, y]) |
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72 | continue; |
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73 | |||
74 | map[x, y] = manipulate[x, y]; |
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75 | } |
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76 | } |
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77 | } |
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78 | |||
79 | #endregion |
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80 | |||
81 | private static double GetBilinearInterpolate(double x, double y, ITerrainChannel map) |
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82 | { |
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83 | int w = map.Width; |
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84 | int h = map.Height; |
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85 | |||
86 | if (x > w - 2.0) |
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87 | x = w - 2.0; |
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88 | if (y > h - 2.0) |
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89 | y = h - 2.0; |
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90 | if (x < 0.0) |
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91 | x = 0.0; |
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92 | if (y < 0.0) |
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93 | y = 0.0; |
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94 | |||
95 | const int stepSize = 1; |
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96 | double h00 = map[(int) x, (int) y]; |
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97 | double h10 = map[(int) x + stepSize, (int) y]; |
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98 | double h01 = map[(int) x, (int) y + stepSize]; |
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99 | double h11 = map[(int) x + stepSize, (int) y + stepSize]; |
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100 | double h1 = h00; |
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101 | double h2 = h10; |
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102 | double h3 = h01; |
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103 | double h4 = h11; |
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104 | double a00 = h1; |
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105 | double a10 = h2 - h1; |
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106 | double a01 = h3 - h1; |
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107 | double a11 = h1 - h2 - h3 + h4; |
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108 | double partialx = x - (int) x; |
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109 | double partialz = y - (int) y; |
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110 | double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz); |
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111 | return hi; |
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112 | } |
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113 | } |
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114 | } |