public FbxConnectionResolver(FbxNode connectionsNode)
{
var count = connectionsNode.Children.Count;
var destLists = new UnsafeRawList <UnsafeRawList <long> >(count);
var srcToDest = new BufferPooledDictionary <long, int>(count);
var destToSrc = new BufferPooledDictionary <long, int>(count);
var srcLists = new UnsafeRawList <UnsafeRawList <long> >(count);
try {
foreach (var c in connectionsNode.Children)
{
var props = c.Properties;
var conn = new Connection(props[0].AsString().ToConnectionType(), props[1].AsInt64(), props[2].AsInt64());
// Create source-to-dest dictionary
{
UnsafeRawList <long> dests;
if (srcToDest.TryAdd(conn.SourceID, destLists.Count))
{
dests = new UnsafeRawList <long>();
destLists.Add(dests);
}
else
{
dests = destLists[srcToDest[conn.SourceID]];
}
Debug.Assert(dests.IsNull == false);
dests.Add(conn.DestID);
}
// Create dest-to-source dictionary
{
UnsafeRawList <long> sources;
if (destToSrc.TryAdd(conn.DestID, srcLists.Count))
{
sources = new UnsafeRawList <long>();
srcLists.Add(sources);
}
else
{
sources = srcLists[destToSrc[conn.DestID]];
}
Debug.Assert(sources.IsNull == false);
sources.Add(conn.SourceID);
}
}
}
catch {
destLists.Dispose();
srcToDest.Dispose();
destToSrc.Dispose();
srcLists.Dispose();
throw;
}
_destLists = destLists;
_srcToDest = srcToDest;
_destToSrc = destToSrc;
_srcLists = srcLists;
}
public static UnsafeRawList <byte> ReadToEnd(this Stream stream, out int length)
{
if (stream is null)
{
throw new ArgumentNullException(nameof(stream));
}
var buf = new UnsafeRawList <byte>(0);
try {
length = 0;
while (true)
{
var span = buf.Extend(1024);
var readLen = stream.Read(span);
length += readLen;
if (readLen == 0)
{
break;
}
}
return(buf);
}
catch {
buf.Dispose();
throw;
}
}
public static unsafe FbxObject Parse(Stream stream)
{
if (stream is null)
{
throw new ArgumentNullException(nameof(stream));
}
var reader = new Reader(stream);
ParseHeader(reader, out var version);
UnsafeRawList <FbxNode_> nodes = default;
try {
while (true)
{
if (!ParseNodeRecord(reader, version, out var node))
{
break;
}
nodes.Add(node);
}
return(new FbxObject(nodes));
}
catch {
nodes.Dispose();
throw;
}
}
public void Dispose()
{
_positions.Dispose();
_normals.Dispose();
_uvs.Dispose();
_positionIndices.Dispose();
_normalIndices.Dispose();
_uvIndices.Dispose();
}
public void Dispose()
{
_srcToDest?.Dispose();
foreach (var l in _destLists.AsSpan())
{
l.Dispose();
}
_destLists.Dispose();
_destToSrc?.Dispose();
foreach (var l in _srcLists.AsSpan())
{
l.Dispose();
}
_srcLists.Dispose();
}
private static UnsafeRawList <byte> ReadToBuffer(Stream stream, out int length)
{
if (stream.CanSeek)
{
var streamLen = stream.Length;
if (streamLen <= int.MaxValue)
{
var buffer = new UnsafeRawList <byte>((int)streamLen);
try {
length = stream.Read(buffer.Extend((int)streamLen, false));
return(buffer);
}
catch {
buffer.Dispose();
throw;
}
}
else
{
throw new NotSupportedException();
}
}
else
{
var buffer = new UnsafeRawList <byte>();
var totalLen = 0;
while (true)
{
const int BlockSize = 1024;
var readLen = stream.Read(buffer.Extend(BlockSize, false));
totalLen += readLen;
if (readLen < BlockSize)
{
break;
}
}
length = totalLen;
return(buffer);
}
}
