public DeformerList(FbxNode objectsNode)
{
using var buf = new UnsafeRawArray <int>(objectsNode.Children.Count, false);
var count = objectsNode.FindChildIndexAll(FbxConstStrings.Deformer(), buf.AsSpan());
_dic = new BufferPooledDictionary <long, FbxNode>(count);
foreach (var index in buf.AsSpan(0, count))
{
var deformer = objectsNode.Children[index];
var id = deformer.Properties[0].AsInt64();
_dic.Add(id, deformer);
}
}
public static void SafeSkip(this Stream stream, int byteLength)
{
if (byteLength < 0)
{
ThrowHelper.ThrowArgOutOfRange(nameof(byteLength));
}
if (stream.CanSeek)
{
var pos = stream.Position + byteLength;
if (pos > stream.Length)
{
stream.Position = stream.Length;
ThrowEOS();
}
stream.Position = pos;
}
else
{
if (byteLength > 128)
{
using var buf = new UnsafeRawArray <byte>(byteLength, false);
SafeRead(stream, buf.AsSpan());
}
else
{
Span <byte> buf = stackalloc byte[byteLength];
SafeRead(stream, buf);
}
}
}
static UnsafeRawArray <T> Decode <T>(Reader reader, int arrayLength, int compressedSize) where T : unmanaged
{
const int deflateMetaDataSize = 2;
reader.Int16(out var _); // deflateMetaData (not be used)
// read compressed data
using var buf = new UnsafeRawArray <byte>(compressedSize - deflateMetaDataSize);
reader.Read(buf.AsSpan());
// decompress data
var ptr = (byte *)buf.Ptr;
using var ms = (_ms is null) ? (_ms = new MemoryStreamUM(ptr, buf.Length)) : _ms.RefreshInstance(ptr, buf.Length);
using var ds = new DeflateStream(ms, CompressionMode.Decompress);
var decoded = new UnsafeRawArray <T>(arrayLength);
try {
ds.Read(MemoryMarshal.Cast <T, byte>(decoded.AsSpan()));
}
catch {
decoded.Dispose();
throw;
}
return(decoded);
}
private unsafe static void ParseProperty(Reader reader, ref FbxProperty property)
{
reader.Byte(out var propertyType);
switch (propertyType)
{
case INT16_PROPERTY: {
reader.Int16(out var value);
property.SetInt16(value);
break;
}
case BOOL_PROPERTY: {
reader.Byte(out var value);
// two types format exist. (Oh my gosh !! Fuuuuuuuu*k !!)
// blender -> true/false = 0x01/0x00
// Autodesk production -> true/false = 'Y'/'T' = 0x59/0x54
property.SetBool(value != 0x00 && value != 0x54);
break;
}
case INT32_PROPERTY: {
reader.Int32(out var value);
property.SetInt32(value);
break;
}
case FLOAT_PROPERTY: {
reader.Float(out var value);
property.SetFloat(value);
break;
}
case DOUBLE_PROPERTY: {
reader.Double(out var value);
property.SetDouble(value);
break;
}
case INT64_PROPERTY: {
reader.Int64(out var value);
property.SetInt64(value);
break;
}
case STRING_PROPERTY: {
reader.Int32(out var len);
RawStringMem str = default;
try {
str = new RawStringMem(len);
reader.Read(str.AsSpan());
SanitizeString(str.AsSpan());
property.SetString((byte *)str.Ptr, str.ByteLength);
}
catch {
str.Dispose();
throw;
}
break;
}
case BOOL_ARRAY_PROPERTY: {
reader.Int32(out var len);
reader.UInt32(out var encoded);
reader.UInt32(out var compressedSize);
UnsafeRawArray <bool> array = default; // Don't dispose
try {
if (encoded != 0)
{
array = Decode <bool>(reader, len, (int)compressedSize);
}
else
{
array = new UnsafeRawArray <bool>((int)compressedSize);
reader.Read(MemoryMarshal.Cast <bool, byte>(array.AsSpan()));
}
property.SetBoolArray((bool *)array.Ptr, array.Length);
}
catch {
array.Dispose();
throw;
}
break;
}
case INT32_ARRAY_PROPERTY: {
reader.Int32(out var len);
reader.UInt32(out var encoded);
reader.UInt32(out var compressedSize);
UnsafeRawArray <int> array = default; // Don't dispose
try {
if (encoded != 0)
{
array = Decode <int>(reader, len, (int)compressedSize);
}
else
{
array = new UnsafeRawArray <int>((int)compressedSize / sizeof(int));
reader.Read(MemoryMarshal.Cast <int, byte>(array.AsSpan()));
}
property.SetInt32Array((int *)array.Ptr, array.Length);
}
catch {
array.Dispose();
throw;
}
break;
}
case FLOAT_ARRAY_PROPERTY: {
reader.Int32(out var len);
reader.UInt32(out var encoded);
reader.UInt32(out var compressedSize);
UnsafeRawArray <float> array = default; // Don't dispose
try {
if (encoded != 0)
{
array = Decode <float>(reader, len, (int)compressedSize);
}
else
{
array = new UnsafeRawArray <float>((int)compressedSize / sizeof(float));
reader.Read(MemoryMarshal.Cast <float, byte>(array.AsSpan()));
}
property.SetFloatArray((float *)array.Ptr, array.Length);
}
catch {
array.Dispose();
throw;
}
break;
}
case DOUBLE_ARRAY_PROPERTY: {
reader.Int32(out var len);
reader.UInt32(out var encoded);
reader.UInt32(out var compressedSize);
UnsafeRawArray <double> array = default;
try {
if (encoded != 0)
{
array = Decode <double>(reader, len, (int)compressedSize);
}
else
{
array = new UnsafeRawArray <double>((int)compressedSize / sizeof(double));
reader.Read(MemoryMarshal.Cast <double, byte>(array.AsSpan()));
}
property.SetDoubleArray((double *)array.Ptr, array.Length);
}
catch {
array.Dispose();
throw;
}
break;
}
case INT64_ARRAY_PROPERTY: {
reader.Int32(out var len);
reader.UInt32(out var encoded);
reader.UInt32(out var compressedSize);
UnsafeRawArray <long> array = default;
try {
if (encoded != 0)
{
array = Decode <long>(reader, len, (int)compressedSize);
}
else
{
array = new UnsafeRawArray <long>((int)compressedSize / sizeof(long));
reader.Read(MemoryMarshal.Cast <long, byte>(array.AsSpan()));
}
property.SetInt64Array((long *)array.Ptr, array.Length);
}
catch {
array.Dispose();
throw;
}
break;
}
case RAW_BINARY_PROPERTY: {
reader.Int32(out var len);
var buf = new UnsafeRawArray <byte>(len);
try {
reader.Read(buf.AsSpan());
property.SetByteArray((byte *)buf.Ptr, buf.Length);
}
catch {
buf.Dispose();
throw;
}
break;
}
default: {
Debug.WriteLine($"[Skip Unknow Type Property] Position : {reader.BaseStream.Position}, type : {propertyType}");
break;
}
}
