Use mesh to estimate real center of prims if avaiable. Let sculpt map textures with alpha channel work. On linux J2DecodeCache folder must be deleted to remove bad entries. Corrently this can't be cached on linux (mono/ cairo/? problem)

1 files changed, 38 insertions, 24 deletions

diff --git a/OpenSim/Region/Physics/Meshing/SculptMap.cs b/OpenSim/Region/Physics/Meshing/SculptMap.cs
index 740424e..b3d9cb6 100644
--- a/OpenSim/Region/Physics/Meshing/SculptMap.cs
+++ b/OpenSim/Region/Physics/Meshing/SculptMap.cs
@@ -58,28 +58,24 @@ namespace PrimMesher
             if (bmW == 0 || bmH == 0)
                 throw new Exception("SculptMap: bitmap has no data");
 
-            int numLodPixels = lod * 2 * lod * 2;  // (32 * 2)^2  = 64^2 pixels for default sculpt map image
+            int numLodPixels = lod * lod;  // (32 * 2)^2  = 64^2 pixels for default sculpt map image
 
+            bool smallMap = bmW * bmH <= numLodPixels;
             bool needsScaling = false;
 
-            bool smallMap = bmW * bmH <= lod * lod;
-
             width = bmW;
             height = bmH;
-            while (width * height > numLodPixels)
+            while (width * height > numLodPixels * 4)
             {
                 width >>= 1;
                 height >>= 1;
                 needsScaling = true;
             }
 
-
-
             try
             {
                 if (needsScaling)
-                    bm = ScaleImage(bm, width, height,
-                        System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor);
+                    bm = ScaleImage(bm, width, height);
             }
 
             catch (Exception e)
@@ -87,7 +83,7 @@ namespace PrimMesher
                 throw new Exception("Exception in ScaleImage(): e: " + e.ToString());
             }
 
-            if (width * height > lod * lod)
+            if (width * height > numLodPixels)
             {
                 width >>= 1;
                 height >>= 1;
@@ -144,15 +140,17 @@ namespace PrimMesher
             int rowNdx, colNdx;
             int smNdx = 0;
 
+
             for (rowNdx = 0; rowNdx < numRows; rowNdx++)
             {
                 List<Coord> row = new List<Coord>(numCols);
                 for (colNdx = 0; colNdx < numCols; colNdx++)
                 {
+
                     if (mirror)
-                        row.Add(new Coord(-(redBytes[smNdx] * pixScale - 0.5f), (greenBytes[smNdx] * pixScale - 0.5f), blueBytes[smNdx] * pixScale - 0.5f));
+                        row.Add(new Coord(-((float)redBytes[smNdx] * pixScale - 0.5f), ((float)greenBytes[smNdx] * pixScale - 0.5f), (float)blueBytes[smNdx] * pixScale - 0.5f));
                     else
-                        row.Add(new Coord(redBytes[smNdx] * pixScale - 0.5f, greenBytes[smNdx] * pixScale - 0.5f, blueBytes[smNdx] * pixScale - 0.5f));
+                        row.Add(new Coord((float)redBytes[smNdx] * pixScale - 0.5f, (float)greenBytes[smNdx] * pixScale - 0.5f, (float)blueBytes[smNdx] * pixScale - 0.5f));
 
                     ++smNdx;
                 }
@@ -161,23 +159,39 @@ namespace PrimMesher
             return rows;
         }
 
-        private Bitmap ScaleImage(Bitmap srcImage, int destWidth, int destHeight,
-                System.Drawing.Drawing2D.InterpolationMode interpMode)
+        private Bitmap ScaleImage(Bitmap srcImage, int destWidth, int destHeight)
         {
-            Bitmap scaledImage = new Bitmap(srcImage, destWidth, destHeight);
-            scaledImage.SetResolution(96.0f, 96.0f);
-
-            Graphics grPhoto = Graphics.FromImage(scaledImage);
-            grPhoto.InterpolationMode = interpMode;
 
-            grPhoto.DrawImage(srcImage,
-                new Rectangle(0, 0, destWidth, destHeight),
-                new Rectangle(0, 0, srcImage.Width, srcImage.Height),
-                GraphicsUnit.Pixel);
+            Bitmap scaledImage = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb);
+            
+            Color c;
+            float xscale = srcImage.Width / destWidth;
+            float yscale = srcImage.Height / destHeight;
+            
+            float sy = 0.5f;
+            for (int y = 0; y < destHeight; y++)
+            {
+                float sx = 0.5f;
+                for (int x = 0; x < destWidth; x++)
+                {
+                    try
+                    {
+                        c = srcImage.GetPixel((int)(sx), (int)(sy));
+                        scaledImage.SetPixel(x, y, Color.FromArgb(c.R, c.G, c.B));
+                    }
+                    catch (IndexOutOfRangeException)
+                    {
+                    }
 
-            grPhoto.Dispose();
+                    sx += xscale;
+                }
+                sy += yscale;
+            }
+            srcImage.Dispose();
             return scaledImage;
         }
+
+    }        
+    
     }
-}
 #endif