示例#1
0
        public override Model Read(string name, FileInfo file)
        {
            Model model = base.Read(name, file);

            try
            {
                StreamReader reader = file.OpenText();

                List<string> matFiles = new List<string>();

                Mesh mesh = model.NewMesh();

                while (!reader.EndOfStream)
                {
                    string line = reader.ReadLine().Trim();

                    if (line == string.Empty || line[0] == '#')
                        continue;

                    string[] lineParts = line.Split(" ".ToCharArray());
                    if (lineParts.Length == 1)
                        continue;

                    string code = lineParts[0].ToLower();

                    if (code == "v")
                        model.Geometry.Vertecies.Add(ReadVector3(lineParts, 1));
                    else if (code == "vn")
                        model.Geometry.Normals.Add(ReadVector3(lineParts, 1));
                    else if (code == "vt")
                    {
                        Vector2 uv = ReadVector2(lineParts, 1);
                        uv.Y = 1 - uv.Y;
                        model.Geometry.UVs.Add(uv);
                    }
                    else if (code == "usemtl")
                    {
                        string matName = lineParts[1];
                        if (mesh.MaterialName == string.Empty)
                        {
                            mesh.MaterialName = matName;
                            model.Meshes.Add(matName, mesh);
                        }
                        else
                        {
                            if (model.Meshes.ContainsKey(matName))
                                mesh = model.Meshes[matName];
                            else
                            {
                                mesh = model.NewMesh();
                                mesh.MaterialName = matName;
                                model.Meshes.Add(matName, mesh);
                            }
                        }
                    }
                    else if (code == "f")
                    {
                        if (lineParts.Length < 4)
                            continue;

                        Mesh.Face face = new Mesh.Face();

                        for (int i = 1; i < lineParts.Length; i++)
                        {
                            if (lineParts[i].Contains('#'))
                                continue;

                            string[] vertParts = lineParts[i].Trim().Split("/".ToCharArray());

                            int vert = 0;
                            int norm = 0;
                            int uv = 0;

                            int.TryParse(vertParts[0], out vert);
                            if (vert < 0)
                                vert = model.Geometry.Vertecies.Count + vert;
                            else
                                vert--;

                            if (vertParts.Length == 2)
                            {
                                int.TryParse(vertParts[1], out uv);
                                if (norm < 0)
                                    norm = model.Geometry.UVs.Count + uv;
                                else
                                    norm--;
                            }
                            else
                            {
                                int.TryParse(vertParts[2], out norm);
                                if (norm < 0)
                                    norm = model.Geometry.Normals.Count + norm;
                                else
                                    norm--;

                                int.TryParse(vertParts[1], out uv);
                                if (uv < 0)
                                    uv = model.Geometry.UVs.Count + uv;
                                else
                                    uv--;
                            }

                            face.Vertecies.Add(new Mesh.Face.Indecies((UInt16)vert, (UInt16)norm, (UInt16)uv));
                        }

                        if (face.Vertecies.Count > 2)
                            mesh.Faces.Add(face);
                    }
                }

                reader.Close();
            }
            catch (System.Exception /*ex*/)
            {
                return null;
            }
            return model;
        }
示例#2
0
        public override Model Read(string name, FileInfo file)
        {
            Model model = base.Read(name, file);

            try
            {
                StreamReader reader = file.OpenText();

                List <string> matFiles = new List <string>();

                Mesh mesh = model.NewMesh();

                while (!reader.EndOfStream)
                {
                    string line = reader.ReadLine().Trim();

                    if (line == string.Empty || line[0] == '#')
                    {
                        continue;
                    }

                    string[] lineParts = line.Split(" ".ToCharArray());
                    if (lineParts.Length == 1)
                    {
                        continue;
                    }

                    string code = lineParts[0].ToLower();

                    if (code == "v")
                    {
                        model.Geometry.Vertecies.Add(ReadVector3(lineParts, 1));
                    }
                    else if (code == "vn")
                    {
                        model.Geometry.Normals.Add(ReadVector3(lineParts, 1));
                    }
                    else if (code == "vt")
                    {
                        Vector2 uv = ReadVector2(lineParts, 1);
                        uv.Y = 1 - uv.Y;
                        model.Geometry.UVs.Add(uv);
                    }
                    else if (code == "usemtl")
                    {
                        string matName = lineParts[1];
                        if (mesh.MaterialName == string.Empty)
                        {
                            mesh.MaterialName = matName;
                            model.Meshes.Add(matName, mesh);
                        }
                        else
                        {
                            if (model.Meshes.ContainsKey(matName))
                            {
                                mesh = model.Meshes[matName];
                            }
                            else
                            {
                                mesh = model.NewMesh();
                                mesh.MaterialName = matName;
                                model.Meshes.Add(matName, mesh);
                            }
                        }
                    }
                    else if (code == "f")
                    {
                        if (lineParts.Length < 4)
                        {
                            continue;
                        }

                        Mesh.Face face = new Mesh.Face();

                        for (int i = 1; i < lineParts.Length; i++)
                        {
                            if (lineParts[i].Contains('#'))
                            {
                                continue;
                            }

                            string[] vertParts = lineParts[i].Trim().Split("/".ToCharArray());

                            int vert = 0;
                            int norm = 0;
                            int uv   = 0;

                            int.TryParse(vertParts[0], out vert);
                            if (vert < 0)
                            {
                                vert = model.Geometry.Vertecies.Count + vert;
                            }
                            else
                            {
                                vert--;
                            }

                            if (vertParts.Length == 2)
                            {
                                int.TryParse(vertParts[1], out uv);
                                if (norm < 0)
                                {
                                    norm = model.Geometry.UVs.Count + uv;
                                }
                                else
                                {
                                    norm--;
                                }
                            }
                            else
                            {
                                int.TryParse(vertParts[2], out norm);
                                if (norm < 0)
                                {
                                    norm = model.Geometry.Normals.Count + norm;
                                }
                                else
                                {
                                    norm--;
                                }

                                int.TryParse(vertParts[1], out uv);
                                if (uv < 0)
                                {
                                    uv = model.Geometry.UVs.Count + uv;
                                }
                                else
                                {
                                    uv--;
                                }
                            }


                            face.Vertecies.Add(new Mesh.Face.Indecies((UInt16)vert, (UInt16)norm, (UInt16)uv));
                        }

                        if (face.Vertecies.Count > 2)
                        {
                            mesh.Faces.Add(face);
                        }
                    }
                }

                reader.Close();
            }
            catch (System.Exception /*ex*/)
            {
                return(null);
            }
            return(model);
        }