public override void Read(Library.Collections.BitStream stream, out Quaternion value, MySerializeInfo info)
{
if (info.IsNormalized)
{
bool cwNeg = stream.ReadBool();
bool cxNeg = stream.ReadBool();
bool cyNeg = stream.ReadBool();
bool czNeg = stream.ReadBool();
ushort cx = stream.ReadUInt16();
ushort cy = stream.ReadUInt16();
ushort cz = stream.ReadUInt16();
// Calculate w from x,y,z
value.X = (float)(cx / 65535.0);
value.Y = (float)(cy / 65535.0);
value.Z = (float)(cz / 65535.0);
if (cxNeg)
{
value.X = -value.X;
}
if (cyNeg)
{
value.Y = -value.Y;
}
if (czNeg)
{
value.Z = -value.Z;
}
float difference = 1.0f - value.X * value.X - value.Y * value.Y - value.Z * value.Z;
if (difference < 0.0f)
{
difference = 0.0f;
}
value.W = (float)(Math.Sqrt(difference));
if (cwNeg)
{
value.W = -value.W;
}
}
else
{
Debug.Fail("Not normalized quaternion?");
value.X = stream.ReadFloat();
value.Y = stream.ReadFloat();
value.Z = stream.ReadFloat();
value.W = stream.ReadFloat();
}
}
public override void Read(Library.Collections.BitStream stream, out float value, MySerializeInfo info)
{
if (info.IsNormalized && info.IsFixed8)
{
value = stream.ReadByte() / 255.0f;
}
else if (info.IsNormalized && info.IsFixed16)
{
value = stream.ReadUInt16() / 65535.0f;
}
else
{
value = stream.ReadFloat();
}
}