1 files changed, 646 insertions, 0 deletions

diff --git a/OpenSim/Region/Physics/UbitMeshing/SculptMesh.cs b/OpenSim/Region/Physics/UbitMeshing/SculptMesh.cs
new file mode 100644
index 0000000..4a7f3ad
--- /dev/null
+++ b/OpenSim/Region/Physics/UbitMeshing/SculptMesh.cs
@@ -0,0 +1,646 @@
+/*
+ * Copyright (c) Contributors
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// to build without references to System.Drawing, comment this out
+#define SYSTEM_DRAWING
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+
+#if SYSTEM_DRAWING
+using System.Drawing;
+using System.Drawing.Imaging;
+#endif
+
+namespace PrimMesher
+{
+
+    public class SculptMesh
+    {
+        public List<Coord> coords;
+        public List<Face> faces;
+
+        public List<ViewerFace> viewerFaces;
+        public List<Coord> normals;
+        public List<UVCoord> uvs;
+
+        public enum SculptType { sphere = 1, torus = 2, plane = 3, cylinder = 4 };
+
+#if SYSTEM_DRAWING
+
+        public SculptMesh SculptMeshFromFile(string fileName, SculptType sculptType, int lod, bool viewerMode)
+        {
+            Bitmap bitmap = (Bitmap)Bitmap.FromFile(fileName);
+            SculptMesh sculptMesh = new SculptMesh(bitmap, sculptType, lod, viewerMode);
+            bitmap.Dispose();
+            return sculptMesh;
+        }
+
+
+        public SculptMesh(string fileName, int sculptType, int lod, int viewerMode, int mirror, int invert)
+        {
+            Bitmap bitmap = (Bitmap)Bitmap.FromFile(fileName);
+            _SculptMesh(bitmap, (SculptType)sculptType, lod, viewerMode != 0, mirror != 0, invert != 0);
+            bitmap.Dispose();
+        }
+#endif
+
+        /// <summary>
+        /// ** Experimental ** May disappear from future versions ** not recommeneded for use in applications
+        /// Construct a sculpt mesh from a 2D array of floats
+        /// </summary>
+        /// <param name="zMap"></param>
+        /// <param name="xBegin"></param>
+        /// <param name="xEnd"></param>
+        /// <param name="yBegin"></param>
+        /// <param name="yEnd"></param>
+        /// <param name="viewerMode"></param>
+        public SculptMesh(float[,] zMap, float xBegin, float xEnd, float yBegin, float yEnd, bool viewerMode)
+        {
+            float xStep, yStep;
+            float uStep, vStep;
+
+            int numYElements = zMap.GetLength(0);
+            int numXElements = zMap.GetLength(1);
+
+            try
+            {
+                xStep = (xEnd - xBegin) / (float)(numXElements - 1);
+                yStep = (yEnd - yBegin) / (float)(numYElements - 1);
+
+                uStep = 1.0f / (numXElements - 1);
+                vStep = 1.0f / (numYElements - 1);
+            }
+            catch (DivideByZeroException)
+            {
+                return;
+            }
+
+            coords = new List<Coord>();
+            faces = new List<Face>();
+            normals = new List<Coord>();
+            uvs = new List<UVCoord>();
+
+            viewerFaces = new List<ViewerFace>();
+
+            int p1, p2, p3, p4;
+
+            int x, y;
+            int xStart = 0, yStart = 0;
+
+            for (y = yStart; y < numYElements; y++)
+            {
+                int rowOffset = y * numXElements;
+
+                for (x = xStart; x < numXElements; x++)
+                {
+                    /*
+                    *   p1-----p2
+                    *   | \ f2 |
+                    *   |   \  |
+                    *   | f1  \|
+                    *   p3-----p4
+                    */
+
+                    p4 = rowOffset + x;
+                    p3 = p4 - 1;
+
+                    p2 = p4 - numXElements;
+                    p1 = p3 - numXElements;
+
+                    Coord c = new Coord(xBegin + x * xStep, yBegin + y * yStep, zMap[y, x]);
+                    this.coords.Add(c);
+                    if (viewerMode)
+                    {
+                        this.normals.Add(new Coord());
+                        this.uvs.Add(new UVCoord(uStep * x, 1.0f - vStep * y));
+                    }
+
+                    if (y > 0 && x > 0)
+                    {
+                        Face f1, f2;
+
+                        if (viewerMode)
+                        {
+                            f1 = new Face(p1, p4, p3, p1, p4, p3);
+                            f1.uv1 = p1;
+                            f1.uv2 = p4;
+                            f1.uv3 = p3;
+
+                            f2 = new Face(p1, p2, p4, p1, p2, p4);
+                            f2.uv1 = p1;
+                            f2.uv2 = p2;
+                            f2.uv3 = p4;
+                        }
+                        else
+                        {
+                            f1 = new Face(p1, p4, p3);
+                            f2 = new Face(p1, p2, p4);
+                        }
+
+                        this.faces.Add(f1);
+                        this.faces.Add(f2);
+                    }
+                }
+            }
+
+            if (viewerMode)
+                calcVertexNormals(SculptType.plane, numXElements, numYElements);
+        }
+
+#if SYSTEM_DRAWING
+        public SculptMesh(Bitmap sculptBitmap, SculptType sculptType, int lod, bool viewerMode)
+        {
+            _SculptMesh(sculptBitmap, sculptType, lod, viewerMode, false, false);
+        }
+
+        public SculptMesh(Bitmap sculptBitmap, SculptType sculptType, int lod, bool viewerMode, bool mirror, bool invert)
+        {
+            _SculptMesh(sculptBitmap, sculptType, lod, viewerMode, mirror, invert);
+        }
+#endif
+
+        public SculptMesh(List<List<Coord>> rows, SculptType sculptType, bool viewerMode, bool mirror, bool invert)
+        {
+            _SculptMesh(rows, sculptType, viewerMode, mirror, invert);
+        }
+
+#if SYSTEM_DRAWING
+        /// <summary>
+        /// converts a bitmap to a list of lists of coords, while scaling the image.
+        /// the scaling is done in floating point so as to allow for reduced vertex position
+        /// quantization as the position will be averaged between pixel values. this routine will
+        /// likely fail if the bitmap width and height are not powers of 2.
+        /// </summary>
+        /// <param name="bitmap"></param>
+        /// <param name="scale"></param>
+        /// <param name="mirror"></param>
+        /// <returns></returns>
+        private List<List<Coord>> bitmap2Coords(Bitmap bitmap, int scale, bool mirror)
+        {
+            int numRows = bitmap.Height / scale;
+            int numCols = bitmap.Width / scale;
+            List<List<Coord>> rows = new List<List<Coord>>(numRows);
+
+            float pixScale = 1.0f / (scale * scale);
+            pixScale /= 255;
+
+            int imageX, imageY = 0;
+
+            int rowNdx, colNdx;
+
+            for (rowNdx = 0; rowNdx < numRows; rowNdx++)
+            {
+                List<Coord> row = new List<Coord>(numCols);
+                for (colNdx = 0; colNdx < numCols; colNdx++)
+                {
+                    imageX = colNdx * scale;
+                    int imageYStart = rowNdx * scale;
+                    int imageYEnd = imageYStart + scale;
+                    int imageXEnd = imageX + scale;
+                    float rSum = 0.0f;
+                    float gSum = 0.0f;
+                    float bSum = 0.0f;
+                    for (; imageX < imageXEnd; imageX++)
+                    {
+                        for (imageY = imageYStart; imageY < imageYEnd; imageY++)
+                        {
+                            Color c = bitmap.GetPixel(imageX, imageY);
+                            if (c.A != 255)
+                            {
+                                bitmap.SetPixel(imageX, imageY, Color.FromArgb(255, c.R, c.G, c.B));
+                                c = bitmap.GetPixel(imageX, imageY);
+                            }
+                            rSum += c.R;
+                            gSum += c.G;
+                            bSum += c.B;
+                        }
+                    }
+                    if (mirror)
+                        row.Add(new Coord(-(rSum * pixScale - 0.5f), gSum * pixScale - 0.5f, bSum * pixScale - 0.5f));
+                    else
+                        row.Add(new Coord(rSum * pixScale - 0.5f, gSum * pixScale - 0.5f, bSum * pixScale - 0.5f));
+
+                }
+                rows.Add(row);
+            }
+            return rows;
+        }
+
+        private List<List<Coord>> bitmap2CoordsSampled(Bitmap bitmap, int scale, bool mirror)
+        {
+            int numRows = bitmap.Height / scale;
+            int numCols = bitmap.Width / scale;
+            List<List<Coord>> rows = new List<List<Coord>>(numRows);
+
+            float pixScale = 1.0f / 256.0f;
+
+            int imageX, imageY = 0;
+
+            int rowNdx, colNdx;
+
+            for (rowNdx = 0; rowNdx <= numRows; rowNdx++)
+            {
+                List<Coord> row = new List<Coord>(numCols);
+                imageY = rowNdx * scale;
+                if (rowNdx == numRows) imageY--;
+                for (colNdx = 0; colNdx <= numCols; colNdx++)
+                {
+                    imageX = colNdx * scale;
+                    if (colNdx == numCols) imageX--;
+
+                    Color c = bitmap.GetPixel(imageX, imageY);
+                    if (c.A != 255)
+                    {
+                        bitmap.SetPixel(imageX, imageY, Color.FromArgb(255, c.R, c.G, c.B));
+                        c = bitmap.GetPixel(imageX, imageY);
+                    }
+
+                    if (mirror)
+                        row.Add(new Coord(-(c.R * pixScale - 0.5f), c.G * pixScale - 0.5f, c.B * pixScale - 0.5f));
+                    else
+                        row.Add(new Coord(c.R * pixScale - 0.5f, c.G * pixScale - 0.5f, c.B * pixScale - 0.5f));
+
+                }
+                rows.Add(row);
+            }
+            return rows;
+        }
+
+
+        void _SculptMesh(Bitmap sculptBitmap, SculptType sculptType, int lod, bool viewerMode, bool mirror, bool invert)
+        {
+            _SculptMesh(new SculptMap(sculptBitmap, lod).ToRows(mirror), sculptType, viewerMode, mirror, invert);
+        }
+#endif
+
+        void _SculptMesh(List<List<Coord>> rows, SculptType sculptType, bool viewerMode, bool mirror, bool invert)
+        {
+            coords = new List<Coord>();
+            faces = new List<Face>();
+            normals = new List<Coord>();
+            uvs = new List<UVCoord>();
+
+            sculptType = (SculptType)(((int)sculptType) & 0x07);
+
+            if (mirror)
+                invert = !invert;
+
+            viewerFaces = new List<ViewerFace>();
+
+            int width = rows[0].Count;
+
+            int p1, p2, p3, p4;
+
+            int imageX, imageY;
+
+            if (sculptType != SculptType.plane)
+            {
+                if (rows.Count % 2 == 0)
+                {
+                    for (int rowNdx = 0; rowNdx < rows.Count; rowNdx++)
+                        rows[rowNdx].Add(rows[rowNdx][0]);
+                }
+                else
+                {
+                    int lastIndex = rows[0].Count - 1;
+
+                    for (int i = 0; i < rows.Count; i++)
+                        rows[i][0] = rows[i][lastIndex];
+                }
+            }
+
+            Coord topPole = rows[0][width / 2];
+            Coord bottomPole = rows[rows.Count - 1][width / 2];
+
+            if (sculptType == SculptType.sphere)
+            {
+                if (rows.Count % 2 == 0)
+                {
+                    int count = rows[0].Count;
+                    List<Coord> topPoleRow = new List<Coord>(count);
+                    List<Coord> bottomPoleRow = new List<Coord>(count);
+
+                    for (int i = 0; i < count; i++)
+                    {
+                        topPoleRow.Add(topPole);
+                        bottomPoleRow.Add(bottomPole);
+                    }
+                    rows.Insert(0, topPoleRow);
+                    rows.Add(bottomPoleRow);
+                }
+                else
+                {
+                    int count = rows[0].Count;
+
+                    List<Coord> topPoleRow = rows[0];
+                    List<Coord> bottomPoleRow = rows[rows.Count - 1];
+
+                    for (int i = 0; i < count; i++)
+                    {
+                        topPoleRow[i] = topPole;
+                        bottomPoleRow[i] = bottomPole;
+                    }
+                }
+            }
+
+            if (sculptType == SculptType.torus)
+                rows.Add(rows[0]);
+
+            int coordsDown = rows.Count;
+            int coordsAcross = rows[0].Count;
+//            int lastColumn = coordsAcross - 1;
+
+            float widthUnit = 1.0f / (coordsAcross - 1);
+            float heightUnit = 1.0f / (coordsDown - 1);
+
+            for (imageY = 0; imageY < coordsDown; imageY++)
+            {
+                int rowOffset = imageY * coordsAcross;
+
+                for (imageX = 0; imageX < coordsAcross; imageX++)
+                {
+                    /*
+                    *   p1-----p2
+                    *   | \ f2 |
+                    *   |   \  |
+                    *   | f1  \|
+                    *   p3-----p4
+                    */
+
+                    p4 = rowOffset + imageX;
+                    p3 = p4 - 1;
+
+                    p2 = p4 - coordsAcross;
+                    p1 = p3 - coordsAcross;
+
+                    this.coords.Add(rows[imageY][imageX]);
+                    if (viewerMode)
+                    {
+                        this.normals.Add(new Coord());
+                        this.uvs.Add(new UVCoord(widthUnit * imageX, heightUnit * imageY));
+                    }
+
+                    if (imageY > 0 && imageX > 0)
+                    {
+                        Face f1, f2;
+
+                        if (viewerMode)
+                        {
+                            if (invert)
+                            {
+                                f1 = new Face(p1, p4, p3, p1, p4, p3);
+                                f1.uv1 = p1;
+                                f1.uv2 = p4;
+                                f1.uv3 = p3;
+
+                                f2 = new Face(p1, p2, p4, p1, p2, p4);
+                                f2.uv1 = p1;
+                                f2.uv2 = p2;
+                                f2.uv3 = p4;
+                            }
+                            else
+                            {
+                                f1 = new Face(p1, p3, p4, p1, p3, p4);
+                                f1.uv1 = p1;
+                                f1.uv2 = p3;
+                                f1.uv3 = p4;
+
+                                f2 = new Face(p1, p4, p2, p1, p4, p2);
+                                f2.uv1 = p1;
+                                f2.uv2 = p4;
+                                f2.uv3 = p2;
+                            }
+                        }
+                        else
+                        {
+                            if (invert)
+                            {
+                                f1 = new Face(p1, p4, p3);
+                                f2 = new Face(p1, p2, p4);
+                            }
+                            else
+                            {
+                                f1 = new Face(p1, p3, p4);
+                                f2 = new Face(p1, p4, p2);
+                            }
+                        }
+
+                        this.faces.Add(f1);
+                        this.faces.Add(f2);
+                    }
+                }
+            }
+
+            if (viewerMode)
+                calcVertexNormals(sculptType, coordsAcross, coordsDown);
+        }
+
+        /// <summary>
+        /// Duplicates a SculptMesh object. All object properties are copied by value, including lists.
+        /// </summary>
+        /// <returns></returns>
+        public SculptMesh Copy()
+        {
+            return new SculptMesh(this);
+        }
+
+        public SculptMesh(SculptMesh sm)
+        {
+            coords = new List<Coord>(sm.coords);
+            faces = new List<Face>(sm.faces);
+            viewerFaces = new List<ViewerFace>(sm.viewerFaces);
+            normals = new List<Coord>(sm.normals);
+            uvs = new List<UVCoord>(sm.uvs);
+        }
+
+        private void calcVertexNormals(SculptType sculptType, int xSize, int ySize)
+        {  // compute vertex normals by summing all the surface normals of all the triangles sharing
+            // each vertex and then normalizing
+            int numFaces = this.faces.Count;
+            for (int i = 0; i < numFaces; i++)
+            {
+                Face face = this.faces[i];
+                Coord surfaceNormal = face.SurfaceNormal(this.coords);
+                this.normals[face.n1] += surfaceNormal;
+                this.normals[face.n2] += surfaceNormal;
+                this.normals[face.n3] += surfaceNormal;
+            }
+
+            int numNormals = this.normals.Count;
+            for (int i = 0; i < numNormals; i++)
+                this.normals[i] = this.normals[i].Normalize();
+
+            if (sculptType != SculptType.plane)
+            { // blend the vertex normals at the cylinder seam
+                for (int y = 0; y < ySize; y++)
+                {
+                    int rowOffset = y * xSize;
+
+                    this.normals[rowOffset] = this.normals[rowOffset + xSize - 1] = (this.normals[rowOffset] + this.normals[rowOffset + xSize - 1]).Normalize();
+                }
+            }
+
+            foreach (Face face in this.faces)
+            {
+                ViewerFace vf = new ViewerFace(0);
+                vf.v1 = this.coords[face.v1];
+                vf.v2 = this.coords[face.v2];
+                vf.v3 = this.coords[face.v3];
+
+                vf.coordIndex1 = face.v1;
+                vf.coordIndex2 = face.v2;
+                vf.coordIndex3 = face.v3;
+
+                vf.n1 = this.normals[face.n1];
+                vf.n2 = this.normals[face.n2];
+                vf.n3 = this.normals[face.n3];
+
+                vf.uv1 = this.uvs[face.uv1];
+                vf.uv2 = this.uvs[face.uv2];
+                vf.uv3 = this.uvs[face.uv3];
+
+                this.viewerFaces.Add(vf);
+            }
+        }
+
+        /// <summary>
+        /// Adds a value to each XYZ vertex coordinate in the mesh
+        /// </summary>
+        /// <param name="x"></param>
+        /// <param name="y"></param>
+        /// <param name="z"></param>
+        public void AddPos(float x, float y, float z)
+        {
+            int i;
+            int numVerts = this.coords.Count;
+            Coord vert;
+
+            for (i = 0; i < numVerts; i++)
+            {
+                vert = this.coords[i];
+                vert.X += x;
+                vert.Y += y;
+                vert.Z += z;
+                this.coords[i] = vert;
+            }
+
+            if (this.viewerFaces != null)
+            {
+                int numViewerFaces = this.viewerFaces.Count;
+
+                for (i = 0; i < numViewerFaces; i++)
+                {
+                    ViewerFace v = this.viewerFaces[i];
+                    v.AddPos(x, y, z);
+                    this.viewerFaces[i] = v;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Rotates the mesh
+        /// </summary>
+        /// <param name="q"></param>
+        public void AddRot(Quat q)
+        {
+            int i;
+            int numVerts = this.coords.Count;
+
+            for (i = 0; i < numVerts; i++)
+                this.coords[i] *= q;
+
+            int numNormals = this.normals.Count;
+            for (i = 0; i < numNormals; i++)
+                this.normals[i] *= q;
+
+            if (this.viewerFaces != null)
+            {
+                int numViewerFaces = this.viewerFaces.Count;
+
+                for (i = 0; i < numViewerFaces; i++)
+                {
+                    ViewerFace v = this.viewerFaces[i];
+                    v.v1 *= q;
+                    v.v2 *= q;
+                    v.v3 *= q;
+
+                    v.n1 *= q;
+                    v.n2 *= q;
+                    v.n3 *= q;
+
+                    this.viewerFaces[i] = v;
+                }
+            }
+        }
+
+        public void Scale(float x, float y, float z)
+        {
+            int i;
+            int numVerts = this.coords.Count;
+
+            Coord m = new Coord(x, y, z);
+            for (i = 0; i < numVerts; i++)
+                this.coords[i] *= m;
+
+            if (this.viewerFaces != null)
+            {
+                int numViewerFaces = this.viewerFaces.Count;
+                for (i = 0; i < numViewerFaces; i++)
+                {
+                    ViewerFace v = this.viewerFaces[i];
+                    v.v1 *= m;
+                    v.v2 *= m;
+                    v.v3 *= m;
+                    this.viewerFaces[i] = v;
+                }
+            }
+        }
+
+        public void DumpRaw(String path, String name, String title)
+        {
+            if (path == null)
+                return;
+            String fileName = name + "_" + title + ".raw";
+            String completePath = System.IO.Path.Combine(path, fileName);
+            StreamWriter sw = new StreamWriter(completePath);
+
+            for (int i = 0; i < this.faces.Count; i++)
+            {
+                string s = this.coords[this.faces[i].v1].ToString();
+                s += " " + this.coords[this.faces[i].v2].ToString();
+                s += " " + this.coords[this.faces[i].v3].ToString();
+
+                sw.WriteLine(s);
+            }
+
+            sw.Close();
+        }
+    }
+}