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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.
0.6.0-stable
Adam Frisby 2008-03-14 13:37:39 +00:00
parent ae9a98ceb1
commit 53e8d91c06
10 changed files with 338 additions and 215 deletions
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4
OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/FlattenArea.cs
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@ -58,12 +58,14 @@ namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes
avg = sum / steps; avg = sum / steps;
double str = 0.1 * strength; // == 0.2 in the default client
for (x = 0; x < map.Width; x++) for (x = 0; x < map.Width; x++)
{ {
for (y = 0; y < map.Height; y++) for (y = 0; y < map.Height; y++)
{ {
if (fillArea[x, y] == true) if (fillArea[x, y] == true)
map[x, y] = avg; map[x, y] = (map[x, y] * (1.0 - str)) + (avg * str);
} }
} }
} }

67
OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/NoiseArea.cs
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@ -31,65 +31,6 @@ namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes
{ {
public class NoiseArea : ITerrainFloodEffect public class NoiseArea : ITerrainFloodEffect
{ {
private double Noise(int x, int y)
{
// TODO: Seed
int n = x + y * 57;
n = (n<<13) ^ n;
return (1.0 - ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0);
}
private double SmoothedNoise1(int x, int y)
{
double corners = (Noise(x - 1, y - 1) + Noise(x + 1, y - 1) + Noise(x - 1, y + 1) + Noise(x + 1, y + 1)) / 16;
double sides = (Noise(x - 1, y) + Noise(x + 1, y) + Noise(x, y - 1) + Noise(x, y + 1)) / 8;
double center = Noise(x, y) / 4;
return corners + sides + center;
}
private double Interpolate(double x, double y, double z)
{
return (x * (1.0 - z)) + (y * z);
}
private double InterpolatedNoise(double x, double y)
{
int integer_X = (int)(x);
double fractional_X = x - integer_X;
int integer_Y = (int)y;
double fractional_Y = y - integer_Y;
double v1 = SmoothedNoise1(integer_X, integer_Y);
double v2 = SmoothedNoise1(integer_X + 1, integer_Y);
double v3 = SmoothedNoise1(integer_X, integer_Y + 1);
double v4 = SmoothedNoise1(integer_X + 1, integer_Y + 1);
double i1 = Interpolate(v1, v2, fractional_X);
double i2 = Interpolate(v3, v4, fractional_X);
return Interpolate(i1, i2, fractional_Y);
}
private double PerlinNoise2D(double x, double y)
{
int octaves = 1;
double persistence = 0.0005;
double frequency = 0.0;
double amplitude = 0.0;
double total = 0.0;
for (int i = 0; i < octaves; i++)
{
frequency = System.Math.Pow(2, i);
amplitude = System.Math.Pow(persistence, i);
total += InterpolatedNoise(x * frequency, y * frequency) * amplitude;
}
return total;
}
#region ITerrainFloodEffect Members #region ITerrainFloodEffect Members
public void FloodEffect(ITerrainChannel map, bool[,] fillArea, double strength) public void FloodEffect(ITerrainChannel map, bool[,] fillArea, double strength)
@ -101,11 +42,9 @@ namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes
{ {
if (fillArea[x, y] == true) if (fillArea[x, y] == true)
{ {
lock (OpenSim.Framework.Util.RandomClass) double noise = TerrainUtil.PerlinNoise2D((double)x / (double)Framework.Constants.RegionSize, (double)y / (double)Framework.Constants.RegionSize, 8, 1.0);
{
double noise = PerlinNoise2D(x, y);//OpenSim.Framework.Util.RandomClass.NextDouble(); map[x, y] += noise * strength;
map[x, y] += (noise /*- 0.5*/) * strength;
}
} }
} }
} }

36
OpenSim/Region/Environment/Modules/Terrain/ITerrainEffect.cs Normal file
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@ -0,0 +1,36 @@
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.Environment.Modules.Terrain
{
public interface ITerrainEffect
{
void RunEffect(ITerrainChannel map, double strength);
}
}

37
OpenSim/Region/Environment/Modules/Terrain/ITerrainFloodEffect.cs Normal file
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@ -0,0 +1,37 @@
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
using OpenSim.Region.Environment.Interfaces;
using System;
namespace OpenSim.Region.Environment.Modules.Terrain
{
public interface ITerrainFloodEffect
{
void FloodEffect(ITerrainChannel map, Boolean[,] fillArea, double strength);
}
}

37
OpenSim/Region/Environment/Modules/Terrain/ITerrainLoader.cs Normal file
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@ -0,0 +1,37 @@
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.Environment.Modules.Terrain
{
public interface ITerrainLoader
{
ITerrainChannel LoadFile(string filename);
void SaveFile(string filename, ITerrainChannel map);
}
}

36
OpenSim/Region/Environment/Modules/Terrain/ITerrainPaintableEffect.cs Normal file
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@ -0,0 +1,36 @@
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.Environment.Modules.Terrain
{
public interface ITerrainPaintableEffect
{
void PaintEffect(ITerrainChannel map, double x, double y, double strength, double duration);
}
}

9
OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/NoiseSphere.cs
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@ -57,15 +57,10 @@ namespace OpenSim.Region.Environment.Modules.Terrain.PaintBrushes
z *= z; z *= z;
z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry)); z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry));
double noise; double noise = TerrainUtil.PerlinNoise2D((double)x / (double)Framework.Constants.RegionSize, (double)y / (double)Framework.Constants.RegionSize, 8, 1.0);
lock (Util.RandomClass)
{
noise = Util.RandomClass.NextDouble();
}
if (z > 0.0) if (z > 0.0)
map[x, y] += (noise - 0.5) * z * duration; map[x, y] += noise * z * duration;
} }
} }
} }

119
OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs Normal file
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@ -0,0 +1,119 @@

using OpenSim.Framework;
using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.Environment.Modules.Terrain
{
/// <summary>
/// A new version of the old Channel class, simplified
/// </summary>
public class TerrainChannel : ITerrainChannel
{
private double[,] map;
private bool[,] taint;
public int Width
{
get { return map.GetLength(0); }
}
public int Height
{
get { return map.GetLength(1); }
}
public TerrainChannel Copy()
{
TerrainChannel copy = new TerrainChannel(false);
copy.map = (double[,])this.map.Clone();
return copy;
}
public float[] GetFloatsSerialised()
{
float[] heights = new float[Width * Height];
int i;
for (i = 0; i < Width * Height; i++)
{
heights[i] = (float)map[i % Width, i / Width];
}
return heights;
}
public double[,] GetDoubles()
{
return map;
}
public double this[int x, int y]
{
get
{
return map[x, y];
}
set
{
if (map[x, y] != value)
{
taint[x / 16, y / 16] = true;
map[x, y] = value;
}
}
}
public bool Tainted(int x, int y)
{
if (taint[x / 16, y / 16] != false)
{
taint[x / 16, y / 16] = false;
return true;
}
else
{
return false;
}
}
public TerrainChannel()
{
map = new double[Constants.RegionSize, Constants.RegionSize];
taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
int x, y;
for (x = 0; x < Constants.RegionSize; x++)
{
for (y = 0; y < Constants.RegionSize; y++)
{
map[x, y] = 60.0 - // 60 = Sphere Radius
((x - (Constants.RegionSize / 2)) * (x - (Constants.RegionSize / 2)) +
(y - (Constants.RegionSize / 2)) * (y - (Constants.RegionSize / 2)));
}
}
}
public TerrainChannel(double[,] import)
{
map = import;
taint = new bool[import.GetLength(0), import.GetLength(1)];
}
public TerrainChannel(bool createMap)
{
if (createMap)
{
map = new double[Constants.RegionSize, Constants.RegionSize];
taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
}
}
public TerrainChannel(int w, int h)
{
map = new double[w, h];
taint = new bool[w / 16, h / 16];
}
}
}

153
OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
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@ -36,151 +36,18 @@ using OpenSim.Region.Environment.Scenes;
namespace OpenSim.Region.Environment.Modules.Terrain namespace OpenSim.Region.Environment.Modules.Terrain
{ {
public interface ITerrainPaintableEffect
{
void PaintEffect(ITerrainChannel map, double x, double y, double strength, double duration);
}
public interface ITerrainFloodEffect
{
void FloodEffect(ITerrainChannel map, Boolean[,] fillArea, double strength);
}
public interface ITerrainEffect
{
void RunEffect(ITerrainChannel map, double strength);
}
public interface ITerrainLoader
{
ITerrainChannel LoadFile(string filename);
void SaveFile(string filename, ITerrainChannel map);
}
/// <summary>
/// A new version of the old Channel class, simplified
/// </summary>
public class TerrainChannel : ITerrainChannel
{
private double[,] map;
private bool[,] taint;
public int Width
{
get { return map.GetLength(0); }
}
public int Height
{
get { return map.GetLength(1); }
}
public TerrainChannel Copy()
{
TerrainChannel copy = new TerrainChannel(false);
copy.map = (double[,])this.map.Clone();
return copy;
}
public float[] GetFloatsSerialised()
{
float[] heights = new float[Width * Height];
int i;
for (i = 0; i < Width * Height; i++)
{
heights[i] = (float)map[i % Width, i / Width];
}
return heights;
}
public double[,] GetDoubles()
{
return map;
}
public double this[int x, int y]
{
get
{
return map[x, y];
}
set
{
if (map[x, y] != value)
{
taint[x / 16, y / 16] = true;
map[x, y] = value;
}
}
}
public bool Tainted(int x, int y)
{
if (taint[x / 16, y / 16] != false)
{
taint[x / 16, y / 16] = false;
return true;
}
else
{
return false;
}
}
public TerrainChannel()
{
map = new double[Constants.RegionSize, Constants.RegionSize];
taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
int x, y;
for (x = 0; x < Constants.RegionSize; x++)
{
for (y = 0; y < Constants.RegionSize; y++)
{
map[x, y] = 60.0 - // 60 = Sphere Radius
((x - (Constants.RegionSize / 2)) * (x - (Constants.RegionSize / 2)) +
(y - (Constants.RegionSize / 2)) * (y - (Constants.RegionSize / 2)));
}
}
}
public TerrainChannel(double[,] import)
{
map = import;
taint = new bool[import.GetLength(0), import.GetLength(1)];
}
public TerrainChannel(bool createMap)
{
if (createMap)
{
map = new double[Constants.RegionSize, Constants.RegionSize];
taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
}
}
public TerrainChannel(int w, int h)
{
map = new double[w, h];
taint = new bool[w / 16, h / 16];
}
}
public enum StandardTerrainEffects : byte
{
Flatten = 0,
Raise = 1,
Lower = 2,
Smooth = 3,
Noise = 4,
Revert = 5
}
public class TerrainModule : IRegionModule public class TerrainModule : IRegionModule
{ {
public enum StandardTerrainEffects : byte
{
Flatten = 0,
Raise = 1,
Lower = 2,
Smooth = 3,
Noise = 4,
Revert = 5
}
private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
private Dictionary<StandardTerrainEffects, ITerrainPaintableEffect> m_painteffects = private Dictionary<StandardTerrainEffects, ITerrainPaintableEffect> m_painteffects =

55
OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
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@ -47,5 +47,60 @@ namespace OpenSim.Region.Environment.Modules.Terrain
double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz); double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz);
return hi; return hi;
} }
private static double Noise(double x, double y)
{
int n = (int)x + (int)(y * 749);
n = (n << 13) ^ n;
return (1.0 - ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0);
}
private static double SmoothedNoise1(double x, double y)
{
double corners = (Noise(x - 1, y - 1) + Noise(x + 1, y - 1) + Noise(x - 1, y + 1) + Noise(x + 1, y + 1)) / 16;
double sides = (Noise(x - 1, y) + Noise(x + 1, y) + Noise(x, y - 1) + Noise(x, y + 1)) / 8;
double center = Noise(x, y) / 4;
return corners + sides + center;
}
private static double Interpolate(double x, double y, double z)
{
return (x * (1.0 - z)) + (y * z);
}
private static double InterpolatedNoise(double x, double y)
{
int integer_X = (int)(x);
double fractional_X = x - integer_X;
int integer_Y = (int)y;
double fractional_Y = y - integer_Y;
double v1 = SmoothedNoise1(integer_X, integer_Y);
double v2 = SmoothedNoise1(integer_X + 1, integer_Y);
double v3 = SmoothedNoise1(integer_X, integer_Y + 1);
double v4 = SmoothedNoise1(integer_X + 1, integer_Y + 1);
double i1 = Interpolate(v1, v2, fractional_X);
double i2 = Interpolate(v3, v4, fractional_X);
return Interpolate(i1, i2, fractional_Y);
}
public static double PerlinNoise2D(double x, double y, int octaves, double persistence)
{
double frequency = 0.0;
double amplitude = 0.0;
double total = 0.0;
for (int i = 0; i < octaves; i++)
{
frequency = System.Math.Pow(2, i);
amplitude = System.Math.Pow(persistence, i);
total += InterpolatedNoise(x * frequency, y * frequency) * amplitude;
}
return total;
}
} }
} }