public static SdkMeshRawAnimFile FromStream(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
var file = new SdkMeshRawAnimFile();
using (var reader = new BinaryReader(stream, Encoding.UTF8, true))
{
file.Header = SdkMeshRawAnimHeader.Read(reader);
if (file.Header.Version != FileVersion)
{
throw new InvalidDataException();
}
if (stream.Position != file.Header.AnimationDataOffset)
{
throw new InvalidDataException();
}
stream.Seek(file.Header.AnimationDataOffset, SeekOrigin.Begin);
for (int frameIndex = 0; frameIndex < file.Header.NumFrames; frameIndex++)
{
SdkMeshRawAnimFrameData frame = SdkMeshRawAnimFrameData.Read(reader);
file.AnimationFrames.Add(frame);
}
foreach (SdkMeshRawAnimFrameData frame in file.AnimationFrames)
{
if (stream.Position != file.Header.AnimationDataOffset + frame.DataOffset)
{
throw new InvalidDataException();
}
stream.Seek(file.Header.AnimationDataOffset + frame.DataOffset, SeekOrigin.Begin);
for (int keyIndex = 0; keyIndex < file.Header.NumAnimationKeys; keyIndex++)
{
SdkMeshRawAnimData data = SdkMeshRawAnimData.Read(reader);
frame.AnimationKeys.Add(data);
}
}
if (stream.Position != file.Header.AnimationDataOffset + file.Header.AnimationDataSize)
{
throw new InvalidDataException();
}
}
return(file);
}
internal static SdkMeshRawAnimHeader Read(BinaryReader reader)
{
var header = new SdkMeshRawAnimHeader
{
Version = reader.ReadInt32(),
IsBigEndian = reader.ReadInt32() != 0,
FrameTransformType = (SdkMeshFrameTransformType)reader.ReadInt32(),
NumFrames = reader.ReadInt32(),
NumAnimationKeys = reader.ReadInt32(),
AnimationFPS = reader.ReadInt32(),
AnimationDataSize = reader.ReadInt64(),
AnimationDataOffset = reader.ReadInt64()
};
return(header);
}
