5 files changed, 80 insertions, 13 deletions

diff --git a/OpenSim/Region/Environment/Interfaces/ITerrain.cs b/OpenSim/Region/Environment/Interfaces/ITerrain.cs
index d3070b2..2cef17e 100644
--- a/OpenSim/Region/Environment/Interfaces/ITerrain.cs
+++ b/OpenSim/Region/Environment/Interfaces/ITerrain.cs
@@ -70,4 +70,9 @@ namespace OpenSim.Region.Environment.Interfaces
         void ExportImage(string filename, string gradientmap);
         byte[] ExportJpegImage(string gradientmap);
     }
+
+    public interface ITerrainTemp
+    {
+        byte[] WriteJpegImage(string gradientmap);
+    }
 }
diff --git a/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs b/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs
index c8b9c98..0db1294 100644
--- a/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs
+++ b/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs
@@ -35,5 +35,6 @@ namespace OpenSim.Region.Environment.Interfaces
         float[] GetFloatsSerialised();
         double[,] GetDoubles();
         bool Tainted(int x, int y);
+        ITerrainChannel MakeCopy();
     }
 }
diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs
index 4ab7782..74af2c1 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainChannel.cs
@@ -56,6 +56,14 @@ namespace OpenSim.Region.Environment.Modules.Terrain
             return copy;
         }
 
+        public ITerrainChannel MakeCopy()
+        {
+            TerrainChannel copy = new TerrainChannel(false);
+            copy.map = (double[,])this.map.Clone();
+
+            return copy;
+        } 
+
         public float[] GetFloatsSerialised()
         {
             float[] heights = new float[Width * Height];
diff --git a/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs b/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
index cdcc648..742ea5b 100644
--- a/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
+++ b/OpenSim/Region/Environment/Modules/Terrain/TerrainModule.cs
@@ -27,15 +27,17 @@
 
 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using libsecondlife;
 using Nini.Config;
 using OpenSim.Framework;
 using OpenSim.Region.Environment.Interfaces;
 using OpenSim.Region.Environment.Scenes;
 
+
 namespace OpenSim.Region.Environment.Modules.Terrain
 {
-    public class TerrainModule : IRegionModule
+    public class TerrainModule : IRegionModule , ITerrainTemp
     {
         public enum StandardTerrainEffects : byte
         {
@@ -139,6 +141,7 @@ namespace OpenSim.Region.Environment.Modules.Terrain
         public void Initialise(Scene scene, IConfigSource config)
         {
             m_scene = scene;
+            m_scene.RegisterModuleInterface<ITerrainTemp>(this);
             m_gConfig = config;
 
             // Install terrain module in the simulator
@@ -312,6 +315,51 @@ namespace OpenSim.Region.Environment.Modules.Terrain
             }
         }
 
+        public byte[] WriteJpegImage(string gradientmap)
+        {
+            byte[] imageData = null;
+            try
+            {
+                Bitmap bmp = TerrainToBitmap(gradientmap);
+
+                imageData = OpenJPEGNet.OpenJPEG.EncodeFromImage(bmp, true);
+                
+            }
+            catch (Exception e) // LEGIT: Catching problems caused by OpenJPEG p/invoke
+            {
+                Console.WriteLine("Failed generating terrain map: " + e.ToString());
+            }
+
+            return imageData;
+        }
+
+        private Bitmap TerrainToBitmap(string gradientmap)
+        {
+            Bitmap gradientmapLd = new Bitmap(gradientmap);
+
+            int pallete = gradientmapLd.Height;
+
+            Bitmap bmp = new Bitmap(m_channel.Width, m_channel.Height);
+            Color[] colours = new Color[pallete];
+
+            for (int i = 0; i < pallete; i++)
+            {
+                colours[i] = gradientmapLd.GetPixel(0, i);
+            }
+
+            TerrainChannel copy =(TerrainChannel) m_channel.MakeCopy();
+            for (int y = 0; y < copy.Height; y++)
+            {
+                for (int x = 0; x < copy.Width; x++)
+                {
+                    // 512 is the largest possible height before colours clamp
+                    int colorindex = (int)(Math.Max(Math.Min(1.0, copy[x, y] / 512.0), 0.0) * (pallete - 1));
+                    bmp.SetPixel(x, copy.Height - y - 1, colours[colorindex]);
+                }
+            }
+            return bmp;
+        }
+
         public void PostInitialise()
         {
             InstallDefaultEffects();
diff --git a/OpenSim/Region/Environment/Scenes/Scene.cs b/OpenSim/Region/Environment/Scenes/Scene.cs
index b8a4831..c07f718 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.cs
@@ -946,6 +946,7 @@ namespace OpenSim.Region.Environment.Scenes
                 {
                     Heightmap = new Modules.Terrain.TerrainChannel(map);
                 }
+               
             }
             catch (Exception e)
             {
@@ -981,19 +982,23 @@ namespace OpenSim.Region.Environment.Scenes
         public void CreateTerrainTexture(bool temporary)
         {
             //TODOADAM: Move this to TerrainModule
-            /*
+          
             //create a texture asset of the terrain 
-            byte[] data = Terrain.WriteJpegImage("defaultstripe.png");
-            m_regInfo.EstateSettings.terrainImageID = LLUUID.Random();
-            AssetBase asset = new AssetBase();
-            asset.FullID = m_regInfo.EstateSettings.terrainImageID;
-            asset.Data = data;
-            asset.Name = "terrainImage";
-            asset.Description = RegionInfo.RegionName;
-            asset.Type = 0;
-            asset.Temporary = temporary;
-            AssetCache.AddAsset(asset);
-            */
+            ITerrainTemp terrain = RequestModuleInterface<ITerrainTemp>();
+            if (terrain != null)
+            {
+                byte[] data = terrain.WriteJpegImage("defaultstripe.png");
+                m_regInfo.EstateSettings.terrainImageID = LLUUID.Random();
+                AssetBase asset = new AssetBase();
+                asset.FullID = m_regInfo.EstateSettings.terrainImageID;
+                asset.Data = data;
+                asset.Name = "terrainImage";
+                asset.Description = RegionInfo.RegionName;
+                asset.Type = 0;
+                asset.Temporary = temporary;
+                AssetCache.AddAsset(asset);
+            }
+            
         }
 
         #endregion