1 files changed, 231 insertions, 0 deletions

diff --git a/OpenSim/Region/Physics/Meshing/SculptMesh.cs b/OpenSim/Region/Physics/Meshing/SculptMesh.cs
new file mode 100644
index 0000000..ff9964e
--- /dev/null
+++ b/OpenSim/Region/Physics/Meshing/SculptMesh.cs
@@ -0,0 +1,231 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.Text;
+using OpenJPEGNet;
+using Image = System.Drawing.Image;
+
+namespace OpenSim.Region.Physics.Meshing
+{
+    public class SculptMesh : Mesh
+    {
+        Image idata = null;
+        Bitmap bLOD = null;
+        Bitmap bBitmap = null;
+
+        Vertex northpole = (Vertex)Vertex.Zero;
+        Vertex southpole = (Vertex)Vertex.Zero;
+
+        private int lod = 64;
+        private const float RANGE = 128.0f;
+
+        public SculptMesh(byte[] jpegData)
+        {
+            idata = OpenJPEG.DecodeToImage(jpegData);
+            if (idata != null)
+                bBitmap = new Bitmap(idata);
+
+            
+        }
+        private Vertex ColorToVertex(Color input)
+        {
+            return new Vertex(
+                ((float)input.R - 128) / RANGE,
+                ((float)input.G - 128) / RANGE,
+                ((float)input.B - 128) / RANGE);
+        }
+        private void LoadPoles()
+        {
+            northpole = (Vertex)Vertex.Zero;
+            for (int x = 0; x < bBitmap.Width; x++)
+            {
+                northpole += ColorToVertex(GetPixel(0, 0));
+            }
+            northpole /= bBitmap.Width;
+
+            southpole = (Vertex)Vertex.Zero;
+            for (int x = 0; x < bBitmap.Width; x++)
+            {
+                southpole += ColorToVertex(GetPixel(bBitmap.Height - 1, (bBitmap.Height - 1)));
+            }
+            southpole /= bBitmap.Width;
+        }
+
+        private Color GetPixel(int x, int y)
+        {
+            return bLOD.GetPixel(x, y);
+        }
+
+        public int LOD
+        {
+            get
+            {
+                return (int)Math.Log(Scale, 2);
+            }
+            set
+            {
+                int power = value;
+                if (power == 0)
+                    power = 6;
+                if (power < 2)
+                    power = 2;
+                if (power > 9)
+                    power = 9;
+                int t = (int)Math.Pow(2, power);
+                if (t != Scale)
+                {
+                    lod = t;
+                }
+            }
+        }
+
+        public int Scale
+        {
+            get
+            {
+                return lod;
+            }
+        }
+        private void DoLOD()
+        {
+            int x_max = Math.Min(Scale, bBitmap.Width);
+            int y_max = Math.Min(Scale, bBitmap.Height);
+            if (bBitmap.Width == x_max && bBitmap.Height == y_max)
+                bLOD = bBitmap;
+
+            else if (bLOD == null || x_max != bLOD.Width || y_max != bLOD.Height)//don't resize if you don't need to.
+            {
+                System.Drawing.Bitmap tile = new System.Drawing.Bitmap(bBitmap.Width * 2, bBitmap.Height, PixelFormat.Format24bppRgb);
+                System.Drawing.Bitmap tile_LOD = new System.Drawing.Bitmap(x_max * 2, y_max, PixelFormat.Format24bppRgb);
+
+                bLOD = new System.Drawing.Bitmap(x_max, y_max, PixelFormat.Format24bppRgb);
+                bLOD.SetResolution(bBitmap.HorizontalResolution, bBitmap.VerticalResolution);
+
+                System.Drawing.Graphics grPhoto = System.Drawing.Graphics.FromImage(tile);
+                grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
+
+                grPhoto.DrawImage(bBitmap,
+                    new System.Drawing.Rectangle(0, 0, bBitmap.Width / 2, bBitmap.Height),
+                    new System.Drawing.Rectangle(bBitmap.Width / 2, 0, bBitmap.Width / 2, bBitmap.Height),
+                    System.Drawing.GraphicsUnit.Pixel);
+
+                grPhoto.DrawImage(bBitmap,
+                    new System.Drawing.Rectangle((3 * bBitmap.Width) / 2, 0, bBitmap.Width / 2, bBitmap.Height),
+                    new System.Drawing.Rectangle(0, 0, bBitmap.Width / 2, bBitmap.Height),
+                    System.Drawing.GraphicsUnit.Pixel);
+
+                grPhoto.DrawImage(bBitmap,
+                    new System.Drawing.Rectangle(bBitmap.Width / 2, 0, bBitmap.Width, bBitmap.Height),
+                    new System.Drawing.Rectangle(0, 0, bBitmap.Width, bBitmap.Height),
+                    System.Drawing.GraphicsUnit.Pixel);
+
+                grPhoto = System.Drawing.Graphics.FromImage(tile_LOD);
+                grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
+
+                grPhoto.DrawImage(tile,
+                    new System.Drawing.Rectangle(0, 0, tile_LOD.Width, tile_LOD.Height),
+                    new System.Drawing.Rectangle(0, 0, tile.Width, tile.Height),
+                    System.Drawing.GraphicsUnit.Pixel);
+
+                grPhoto = System.Drawing.Graphics.FromImage(bLOD);
+                grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
+
+                grPhoto.DrawImage(tile_LOD,
+                    new System.Drawing.Rectangle(0, 0, bLOD.Width, bLOD.Height),
+                    new System.Drawing.Rectangle(tile_LOD.Width / 4, 0, tile_LOD.Width / 2, tile_LOD.Height),
+                    System.Drawing.GraphicsUnit.Pixel);
+
+                grPhoto.Dispose();
+                tile_LOD.Dispose();
+                tile.Dispose();
+            }
+
+        }
+        public void clearStuff()
+        {
+            this.triangles.Clear();
+            this.vertices.Clear();
+            normals = new float[0];
+
+        }
+        public void processSculptTexture()
+        {
+            int x_max = Math.Min(Scale, bBitmap.Width);
+            int y_max = Math.Min(Scale, bBitmap.Height);
+
+            int COLUMNS = x_max + 1;
+
+            Vertex[] sVertices = new Vertex[COLUMNS * y_max];
+            float[] indices = new float[COLUMNS * (y_max - 1) * 6];
+
+            for (int y = 0; y < y_max; y++)
+            {
+                for (int x = 0; x < x_max; x++)
+                {
+                    // Create the vertex
+                    Vertex v1 = new Vertex(0,0,0);
+
+                    // Create a vertex position from the RGB channels in the current pixel
+                    int ypos = y * bLOD.Width;
+
+                    
+                    if (y == 0)
+                    {
+                        v1 = northpole;
+                    }
+                    else if (y == y_max - 1)
+                    {
+                        v1 = southpole;
+                    }
+                    else
+                    {
+                        v1 = ColorToVertex(GetPixel(x, y));
+                    }
+                    // Add the vertex for use later
+                    Add(v1);
+                    sVertices[y * COLUMNS + x] = v1;
+                }
+                Vertex tempVertex = vertices[y * COLUMNS];
+                sVertices[y * COLUMNS + x_max] = tempVertex;
+            }
+
+            // Create the Triangles
+            int i = 0;
+
+            for (int y = 0; y < y_max - 1; y++)
+            {
+                int x;
+
+                for (x = 0; x < x_max; x++)
+                {
+                    Triangle tri1 = new Triangle(sVertices[(y * COLUMNS + x)], sVertices[(y * COLUMNS + (x + 1))],
+                                                 sVertices[((y + 1) * COLUMNS + (x + 1))]);
+                    //indices[i++] = (ushort)(y * COLUMNS + x);
+                    //indices[i++] = (ushort)(y * COLUMNS + (x + 1));
+                    //indices[i++] = (ushort)((y + 1) * COLUMNS + (x + 1));
+                    Add(tri1);
+                    Triangle tri2 = new Triangle(sVertices[(y * COLUMNS + x)],sVertices[((y + 1) * COLUMNS + (x + 1))],
+                                                 sVertices[((y + 1) * COLUMNS + x)]);
+
+                    Add(tri2);
+                    //indices[i++] = (ushort)(y * COLUMNS + x);
+                    //indices[i++] = (ushort)((y + 1) * COLUMNS + (x + 1));
+                    //indices[i++] = (ushort)((y + 1) * COLUMNS + x);
+                }
+                Triangle tri3 = new Triangle(sVertices[(y * x_max + x)], sVertices[(y * x_max + 0)], sVertices[((y + 1) * x_max + 0)]);
+                Add(tri3);
+                // Wrap the last cell in the row around
+                //indices[i++] = (ushort)(y * x_max + x); //a
+                //indices[i++] = (ushort)(y * x_max + 0); //b
+                //indices[i++] = (ushort)((y + 1) * x_max + 0); //c
+
+                Triangle tri4 = new Triangle(sVertices[(y * x_max + x)], sVertices[((y + 1) * x_max + 0)], sVertices[((y + 1) * x_max + x)]);
+                Add(tri4);
+                //indices[i++] = (ushort)(y * x_max + x); //a
+                //indices[i++] = (ushort)((y + 1) * x_max + 0); //b
+                //indices[i++] = (ushort)((y + 1) * x_max + x); //c
+            }
+        }
+    }
+}