* Reimplementing Terrain as Region Modules

* New method involves interfaces for
** Terrain Paint Brushes (ie raise brush, lower brush, etc)
** Terrain Flood Brushes (ie raise area, lower area, etc)
** Terrain Effects (ie erosion, etc) [= W.I.P, not committed]
* Provided sample implementation for Raise Paint and Raise Area brushes.

3 files changed, 81 insertions, 0 deletions

diff --git a/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/RaiseArea.cs b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/RaiseArea.cs
new file mode 100644
index 0000000..ce83a4c
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/Terrain/FloodBrushes/RaiseArea.cs
@@ -0,0 +1,30 @@
+using System;

+using System.Collections.Generic;

+using System.Text;

+using OpenSim.Region.Environment.Modules.Terrain;

+using OpenSim.Region.Environment.Interfaces;

+

+namespace OpenSim.Region.Environment.Modules.Terrain.FloodBrushes

+{

+    class RaiseArea : ITerrainFloodEffect

+    {

+        #region ITerrainFloodEffect Members

+

+        public void FloodEffect(ITerrainChannel map, bool[,] fillArea, double strength)

+        {

+            int x, y;

+            for (x = 0; x < map.Width; x++)

+            {

+                for (y = 0; y < map.Height; y++)

+                {

+                    if (fillArea[x, y] == true)

+                    {

+                        map[x, y] += strength;

+                    }

+                }

+            }

+        }

+

+        #endregion

+    }

+}

diff --git a/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/RaiseSphere.cs b/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/RaiseSphere.cs
new file mode 100644
index 0000000..cf95f3f
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/RaiseSphere.cs
@@ -0,0 +1,41 @@
+using System;

+using System.Collections.Generic;

+using System.Text;

+using OpenSim.Region.Environment.Modules.Terrain;

+using OpenSim.Region.Environment.Interfaces;

+

+namespace OpenSim.Region.Environment.Modules.Terrain.PaintBrushes

+{

+    class RaiseSphere : ITerrainPaintableEffect

+    {

+        #region ITerrainPaintableEffect Members

+

+        public void PaintEffect(ITerrainChannel map, double rx, double ry, double strength)

+        {

+            int x, y;

+            for (x = 0; x < map.Width; x++)

+            {

+                // Skip everything unlikely to be affected

+                if (Math.Abs(x - rx) > strength * 1.1)

+                    continue;

+

+                for (y = 0; y < map.Height; y++)

+                {

+                    // Skip everything unlikely to be affected

+                    if (Math.Abs(y - ry) > strength * 1.1)

+                        continue;

+

+                    // Calculate a sphere and add it to the heighmap

+                    double z = strength;

+                    z *= z;

+                    z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry));

+

+                    if (z > 0.0)

+                        map[x, y] += z;

+                }

+            }

+        }

+

+        #endregion

+    }

+}

diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
index 1b765eb..4f8b377 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
@@ -39,6 +39,16 @@ using libsecondlife;
 
 namespace OpenSim.Region.Environment.Modules.Terrain
 {
+    public interface ITerrainPaintableEffect
+    {
+        void PaintEffect(ITerrainChannel map, double x, double y, double strength);
+    }
+
+    public interface ITerrainFloodEffect
+    {
+        void FloodEffect(ITerrainChannel map, Boolean[,] fillArea, double strength);
+    }
+
     /// <summary>
     /// A new version of the old Channel class, simplified
     /// </summary>