public bool AddElement(PLYElement elementItem)
        {
            bool result = false;

            try
            {
                elements.Add(elementItem);
                result = true;
            }
            catch (Exception ex)
            {
            }
            return(result);
        }
        /// <summary>
        /// Reads the model in ASCII format from the specified stream.
        /// </summary>
        /// <param name="stream">
        /// The stream.
        /// </param>
        /// <returns>
        /// True if the model was loaded successfully.
        /// </returns>
        private bool TryReadAscii(StreamReader reader)
        {
            bool result       = false;
            bool endHeader    = false;
            int  elementIndex = 0;
            long elementCount = 0;

            this.vertex = new List <Point3D>();

            PLYElement currentElement = null;

            while (!reader.EndOfStream)
            {
                var line = reader.ReadLine();
                if (line != null)
                {
                    line = line.Trim();
                    if (line.Length == 0 || line.StartsWith("\0") || line.StartsWith("#") || line.StartsWith("!") ||
                        line.StartsWith("$"))
                    {
                        continue;
                    }

                    string id, values;


                    if (!endHeader)
                    {
                        SplitLine(line, out id, out values);
                        string[] fields = null;
                        if (values != null)
                        {
                            fields = values.SplitOnWhitespace();
                        }


                        switch (id.ToLowerInvariant())
                        {
                        case "ply":
                            this.header.isValid = true;
                            break;

                        case "format":

                            this.header.Format = fields[0];

                            break;

                        case "element":
                            if (currentElement != null)
                            {
                                this.header.AddElement(currentElement);
                                currentElement = null;
                            }
                            currentElement       = new PLYElement();
                            currentElement.Name  = fields[0];
                            currentElement.Count = long.Parse(fields[1]);
                            break;

                        case "property":
                            PLYProperty currentProperty = new PLYProperty();
                            currentProperty.Name     = fields[fields.Length - 1];
                            currentProperty.DataType = fields[fields.Length - 2];
                            if (currentElement != null)
                            {
                                currentElement.AddProperty(currentProperty);
                            }
                            break;

                        case "end_header":
                            if (currentElement != null)
                            {
                                this.header.AddElement(currentElement);
                                currentElement = null;
                            }
                            endHeader = true;
                            break;
                        }
                    }
                    else
                    {
                        if (header.Elements.Count > elementIndex)
                        {
                            if (header.Elements[elementIndex].Count > elementCount)
                            {
                                switch (header.Elements[elementIndex].Name.ToLower())
                                {
                                case "vertex":
                                    this.AddVertex(line);
                                    break;

                                case "face":
                                    if (faces == null)
                                    {
                                        faces = new List <int> [header.Elements[elementIndex].Count];
                                    }
                                    this.AddFace(line, elementCount);
                                    break;
                                }
                                elementCount++;
                            }
                            else
                            {
                                elementIndex++;
                                elementCount = 0;
                            }
                        }
                    }
                }
            }
            return(result);
        }
Esempio n. 3
0
        /// <summary>
        /// Reads the model in ASCII format from the specified stream.
        /// </summary>
        /// <param name="stream">
        /// The stream.
        /// </param>
        /// <returns>
        /// True if the model was loaded successfully.
        /// </returns>
        private bool TryReadAscii(StreamReader reader)
        {
            bool result = false;
            bool endHeader = false;
            int elementIndex = 0;
            long elementCount = 0;
            this.vertex = new List<Point3D>();
            
            PLYElement currentElement = null;
            while (!reader.EndOfStream)
            {
                var line = reader.ReadLine();
                if (line != null)
                {

                    line = line.Trim();
                    if (line.Length == 0 || line.StartsWith("\0") || line.StartsWith("#") || line.StartsWith("!")
                        || line.StartsWith("$"))
                    {
                        continue;
                    }

                    string id, values;


                    if (!endHeader)
                    {
                        SplitLine(line, out id, out values);
                        string[] fields=null;
                        if (values != null)
                        {
                            fields = values.SplitOnWhitespace();
                        }
                        

                        switch (id.ToLowerInvariant())
                        {
                            case "ply":
                                this.header.isValid = true;
                                break;
                            case "format":

                                this.header.Format = fields[0];

                                break;
                            case "element":
                                if (currentElement != null)
                                {
                                    this.header.AddElement(currentElement);
                                    currentElement = null;
                                }
                                currentElement = new PLYElement();
                                currentElement.Name = fields[0];
                                currentElement.Count = long.Parse(fields[1]);
                                break;
                            case "property":
                                PLYProperty currentProperty = new PLYProperty();
                                currentProperty.Name = fields[fields.Length - 1];
                                currentProperty.DataType = fields[fields.Length - 2];
                                if (currentElement != null)
                                {
                                    currentElement.AddProperty(currentProperty);
                                }
                                break;
                            case "end_header":
                                if (currentElement != null)
                                {
                                    this.header.AddElement(currentElement);
                                    currentElement = null;
                                }
                                endHeader = true;
                                break;
                        }
                    }
                    else
                    {
                        if (header.Elements.Count > elementIndex)
                        {
                            if (header.Elements[elementIndex].Count > elementCount)
                            {
                                switch (header.Elements[elementIndex].Name.ToLower())
                                {
                                    case "vertex":
                                        this.AddVertex(line);
                                        break;
                                    case "face":
                                        if(faces==null)
                                        {
                                            faces = new List<int>[header.Elements[elementIndex].Count];
                                        }
                                        this.AddFace(line, elementCount);
                                        break;
                                }
                                elementCount++;
                            }
                            else
                            { 
                                elementIndex++;
                                elementCount = 0;
                            }
                        }
                    }
                }
            }
            return result;
        }
Esempio n. 4
0
        public bool AddElement(PLYElement elementItem)
        {
            bool result = false;
            try
            {
                elements.Add(elementItem);
                result = true;
            }
            catch(Exception ex)
            {

            }
            return result;
        }