1 files changed, 49 insertions, 1 deletions

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();