コード例 #1
0
        /// <summary>
        /// Writes an FBX document to the stream
        /// </summary>
        /// <param name="document"></param>
        /// <remarks>
        /// ASCII FBX files have no header or footer, so you can call this multiple times
        /// </remarks>
        public void Write(FbxRootNode document)
        {
            if (document == null)
            {
                throw new ArgumentNullException(nameof(document));
            }
            var sb = new StringBuilder();

            // Write version header (a comment, but required for many importers)
            var vMajor = (int)document.Version / 1000;
            var vMinor = ((int)document.Version % 1000) / 100;
            var vRev   = ((int)document.Version % 100) / 10;

            sb.Append($"; FBX {vMajor}.{vMinor}.{vRev} project file\n\n");

            _nodePath.Clear();
            foreach (var n in document.Nodes)
            {
                if (n == null)
                {
                    continue;
                }
                buildString(n, sb, document.Version >= FbxVersion.v7100);
                sb.Append('\n');
            }
            var b = Encoding.ASCII.GetBytes(sb.ToString());

            _stream.Write(b, 0, b.Length);
        }
コード例 #2
0
ファイル: FbxBinaryParser.cs プロジェクト: DomCR/MeshIO
        /// <summary>
        /// Reads an FBX document from the stream
        /// </summary>
        /// <returns>The top-level node</returns>
        /// <exception cref="FbxException">The FBX data was malformed
        /// for the reader's error level</exception>
        public FbxRootNode Parse()
        {
            _stream.BaseStream.Position = 0;

            // Read header
            bool validHeader = ReadHeader(_stream.BaseStream);

            if (_errorLevel >= ErrorLevel.Strict && !validHeader)
            {
                throw new FbxException(_stream.BaseStream.Position,
                                       "Invalid header string");
            }
            var document = new FbxRootNode {
                Version = (FbxVersion)_stream.ReadInt32()
            };

            // Read nodes
            var     dataPos = _stream.BaseStream.Position;
            FbxNode nested;

            do
            {
                nested = ReadNode(document);
                if (nested != null)
                {
                    document.Nodes.Add(nested);
                }
            } while (nested != null);

            // Read footer code
            var footerCode = new byte[footerCodeSize];

            _stream.BaseStream.Read(footerCode, 0, footerCode.Length);
            if (_errorLevel >= ErrorLevel.Strict)
            {
                var validCode = GenerateFooterCode(document);
                if (!CheckEqual(footerCode, validCode))
                {
                    throw new FbxException(_stream.BaseStream.Position - footerCodeSize,
                                           "Incorrect footer code");
                }
            }

            // Read footer extension
            dataPos = _stream.BaseStream.Position;
            var validFooterExtension = CheckFooter(_stream, document.Version);

            if (_errorLevel >= ErrorLevel.Strict && !validFooterExtension)
            {
                throw new FbxException(dataPos, "Invalid footer");
            }
            return(document);
        }
コード例 #3
0
        /// <summary>
        /// Reads a full document from the stream
        /// </summary>
        /// <returns>The complete document object</returns>
        public FbxRootNode Parse()
        {
            var ret = new FbxRootNode();

            _stream.Position = 0;

            // Read version string
            const string versionString = @"; FBX (\d)\.(\d)\.(\d) project file";
            char         c;

            while (char.IsWhiteSpace(c = readChar()) && !endStream)
            {
            }                                                                       // Skip whitespace

            bool hasVersionString = false;

            if (c == ';')
            {
                var sb = new StringBuilder();
                do
                {
                    sb.Append(c);
                } while (!IsLineEnd(c = readChar()) && !endStream);
                var match = Regex.Match(sb.ToString(), versionString);
                hasVersionString = match.Success;
                if (hasVersionString)
                {
                    ret.Version = (FbxVersion)(
                        int.Parse(match.Groups[1].Value) * 1000 +
                        int.Parse(match.Groups[2].Value) * 100 +
                        int.Parse(match.Groups[3].Value) * 10
                        );
                }
            }

            if (!hasVersionString && _errorLevel >= ErrorLevel.Strict)
            {
                throw new FbxException(_line, _column,
                                       "Invalid version string; first line must match \"" + versionString + "\"");
            }

            FbxNode node;

            while ((node = ReadNode()) != null)
            {
                ret.Nodes.Add(node);
            }

            return(ret);
        }
コード例 #4
0
ファイル: FbxBinaryWriter.cs プロジェクト: DomCR/MeshIO
 /// <summary>
 /// Writes an FBX file to the output
 /// </summary>
 /// <param name="document"></param>
 public void Write(FbxRootNode document)
 {
     stream.BaseStream.Position = 0;
     WriteHeader(stream.BaseStream);
     stream.Write((int)document.Version);
     // TODO: Do we write a top level node or not? Maybe check the version?
     nodePath.Clear();
     foreach (var node in document.Nodes)
     {
         WriteNode(document, node);
     }
     WriteNode(document, null);
     stream.Write(GenerateFooterCode(document));
     WriteFooter(stream, (int)document.Version);
     output.Write(memory.GetBuffer(), 0, (int)memory.Position);
 }
コード例 #5
0
 public static void WriteAscii(string path, FbxRootNode root)
 {
     using (FbxWriter writer = new FbxWriter(path, root.Version))
         writer.WriteAscii(root);
 }
コード例 #6
0
 /// <inheritdoc/>
 public void WriteBinary(FbxRootNode root)
 {
     using (FbxBinaryWriter writer = new FbxBinaryWriter(this._stream))
         writer.Write(root);
 }
コード例 #7
0
 /// <inheritdoc/>
 public void WriteAscii(FbxRootNode root)
 {
     using (FbxAsciiWriter writer = new FbxAsciiWriter(this._stream))
         writer.Write(root);
 }
コード例 #8
0
 /// <inheritdoc/>
 public void WriteBinary(Scene scene)
 {
     using (FbxBinaryWriter writer = new FbxBinaryWriter(this._stream))
         writer.Write(FbxRootNode.CreateFromScene(scene, this.Version));
 }
コード例 #9
0
ファイル: FbxBinaryWriter.cs プロジェクト: DomCR/MeshIO
        // Writes a single document to the buffer
        void WriteNode(FbxRootNode document, FbxNode node)
        {
            if (node == null)
            {
                var data = document.Version >= FbxVersion.v7500 ? nullData7500 : nullData;
                stream.BaseStream.Write(data, 0, data.Length);
            }
            else
            {
                nodePath.Push(node.Name ?? "");
                var name = string.IsNullOrEmpty(node.Name) ? null : Encoding.ASCII.GetBytes(node.Name);
                if (name != null && name.Length > byte.MaxValue)
                {
                    throw new FbxException(stream.BaseStream.Position,
                                           "Node name is too long");
                }

                // Header
                var  endOffsetPos = stream.BaseStream.Position;
                long propertyLengthPos;
                if (document.Version >= FbxVersion.v7500)
                {
                    stream.Write((long)0);                     // End offset placeholder
                    stream.Write((long)node.Properties.Count);
                    propertyLengthPos = stream.BaseStream.Position;
                    stream.Write((long)0);                     // Property length placeholder
                }
                else
                {
                    stream.Write(0);                     // End offset placeholder
                    stream.Write(node.Properties.Count);
                    propertyLengthPos = stream.BaseStream.Position;
                    stream.Write(0);                     // Property length placeholder
                }

                stream.Write((byte)(name?.Length ?? 0));
                if (name != null)
                {
                    stream.Write(name);
                }

                // Write properties and length
                var propertyBegin = stream.BaseStream.Position;
                for (int i = 0; i < node.Properties.Count; i++)
                {
                    WriteProperty(node.Properties[i], i);
                }
                var propertyEnd = stream.BaseStream.Position;
                stream.BaseStream.Position = propertyLengthPos;
                if (document.Version >= FbxVersion.v7500)
                {
                    stream.Write((long)(propertyEnd - propertyBegin));
                }
                else
                {
                    stream.Write((int)(propertyEnd - propertyBegin));
                }
                stream.BaseStream.Position = propertyEnd;

                // Write child nodes
                if (node.Nodes.Count > 0)
                {
                    foreach (var n in node.Nodes)
                    {
                        if (n == null)
                        {
                            continue;
                        }
                        WriteNode(document, n);
                    }
                    WriteNode(document, null);
                }

                // Write end offset
                var dataEnd = stream.BaseStream.Position;
                stream.BaseStream.Position = endOffsetPos;
                if (document.Version >= FbxVersion.v7500)
                {
                    stream.Write((long)dataEnd);
                }
                else
                {
                    stream.Write((int)dataEnd);
                }
                stream.BaseStream.Position = dataEnd;

                nodePath.Pop();
            }
        }
コード例 #10
0
ファイル: FbxBinaryParser.cs プロジェクト: DomCR/MeshIO
        /// <summary>
        /// Reads a single node.
        /// </summary>
        /// <remarks>
        /// This won't read the file header or footer, and as such will fail if the stream is a full FBX file
        /// </remarks>
        /// <returns>The node</returns>
        /// <exception cref="FbxException">The FBX data was malformed
        /// for the reader's error level</exception>
        public FbxNode ReadNode(FbxRootNode document)
        {
            var endOffset       = document.Version >= FbxVersion.v7500 ? _stream.ReadInt64() : _stream.ReadInt32();
            var numProperties   = document.Version >= FbxVersion.v7500 ? _stream.ReadInt64() : _stream.ReadInt32();
            var propertyListLen = document.Version >= FbxVersion.v7500 ? _stream.ReadInt64() : _stream.ReadInt32();
            var nameLen         = _stream.ReadByte();
            var name            = nameLen == 0 ? "" : Encoding.ASCII.GetString(_stream.ReadBytes(nameLen));

            if (endOffset == 0)
            {
                // The end offset should only be 0 in a null node
                if (_errorLevel >= ErrorLevel.Checked && (numProperties != 0 || propertyListLen != 0 || !string.IsNullOrEmpty(name)))
                {
                    throw new FbxException(_stream.BaseStream.Position,
                                           "Invalid node; expected NULL record");
                }
                return(null);
            }

            var node = new FbxNode {
                Name = name
            };

            var propertyEnd = _stream.BaseStream.Position + propertyListLen;

            // Read properties
            for (int i = 0; i < numProperties; i++)
            {
                node.Properties.Add(readProperty());
            }

            if (_errorLevel >= ErrorLevel.Checked && _stream.BaseStream.Position != propertyEnd)
            {
                throw new FbxException(_stream.BaseStream.Position,
                                       "Too many bytes in property list, end point is " + propertyEnd);
            }

            // Read nested nodes
            var listLen = endOffset - _stream.BaseStream.Position;

            if (_errorLevel >= ErrorLevel.Checked && listLen < 0)
            {
                throw new FbxException(_stream.BaseStream.Position,
                                       "Node has invalid end point");
            }
            if (listLen > 0)
            {
                FbxNode nested;
                do
                {
                    nested = ReadNode(document);
                    if (nested != null)
                    {
                        node.Nodes.Add(nested);
                    }
                } while (nested != null);
                if (_errorLevel >= ErrorLevel.Checked && _stream.BaseStream.Position != endOffset)
                {
                    throw new FbxException(_stream.BaseStream.Position,
                                           "Too many bytes in node, end point is " + endOffset);
                }
            }
            return(node);
        }