/// <summary>
/// Reads the data from a compressed track
/// </summary>
/// <param name="reader"></param>
/// <param name="flags"></param>
/// <returns></returns>
private object[] ReadCompressed(SSBHParser reader, uint flags)
{
List <object> output = new List <object>();
uint dataOffset = (uint)reader.BaseStream.Position;
SSBHAnimCompressedHeader header = reader.ByteToType <SSBHAnimCompressedHeader>();
if (CheckFlag(flags, 0x00FF, ANIM_TRACKFLAGS.Boolean))
{
ReadBooleans(reader, output, dataOffset, header);
}
if (CheckFlag(flags, 0x00FF, ANIM_TRACKFLAGS.Texture))
{
// TODO: What type is this
}
if (CheckFlag(flags, 0x00FF, ANIM_TRACKFLAGS.Float))
{
//TODO: What type is this
}
if (CheckFlag(flags, 0x00FF, ANIM_TRACKFLAGS.PatternIndex))
{
//TODO: What type is this
}
if (CheckFlag(flags, 0x00FF, ANIM_TRACKFLAGS.Vector4))
{
ReadVector4(reader, output, dataOffset, header);
}
if (CheckFlag(flags, 0x00FF, ANIM_TRACKFLAGS.Transform))
{
ReadTransform(reader, output, dataOffset, header);
}
return(output.ToArray());
}
/// <summary>
/// Decompresses values in a track
/// </summary>
/// <param name="parser"></param>
/// <param name="dataOffset"></param>
/// <param name="header"></param>
/// <param name="valueCount"></param>
/// <returns></returns>
private List <float[]> DecompressValues(SSBHParser parser, uint dataOffset, SSBHAnimCompressedHeader header, int valueCount)
{
List <float[]> transforms = new List <float[]>(header.FrameCount);
// PreProcess
SSBHAnimCompressedItem[] items = parser.ByteToType <SSBHAnimCompressedItem>(valueCount);
parser.Seek(dataOffset + header.DefaultDataOffset);
float[] defaultValues = GetDefaultValues(parser, valueCount);
parser.Seek(dataOffset + header.CompressedDataOffset);
for (int frameIndex = 0; frameIndex < header.FrameCount; frameIndex++)
{
// Copy default values.
float[] values = new float[valueCount];
for (int i = 0; i < valueCount; i++)
{
values[i] = defaultValues[i];
}
for (int itemIndex = 0; itemIndex < items.Length; itemIndex++)
{
var item = items[itemIndex];
// Decompress
int valueBitCount = (int)item.Count;
if (valueBitCount == 0)
{
continue;
}
int value = parser.ReadBits(valueBitCount);
int scale = 0;
for (int k = 0; k < valueBitCount; k++)
{
scale |= 0x1 << k;
}
float frameValue = Lerp(item.Start, item.End, 0, 1, value / (float)scale);
if (float.IsNaN(frameValue))
{
frameValue = 0;
}
values[itemIndex] = frameValue;
}
transforms.Add(values);
}
return(transforms);
}
/// <summary>
/// decompresses transform values from a track
/// </summary>
/// <param name="parser"></param>
/// <param name="dataOffset"></param>
/// <param name="header"></param>
/// <returns></returns>
private AnimTrackTransform[] DecompressTransform(SSBHParser parser, uint dataOffset, SSBHAnimCompressedHeader header)
{
AnimTrackTransform[] transforms = new AnimTrackTransform[header.FrameCount];
// PreProcess
SSBHAnimCompressedItem[] items = parser.ByteToType <SSBHAnimCompressedItem>(9);
parser.Seek(dataOffset + header.DefaultDataOffset);
float XSCA = parser.ReadSingle();
float YSCA = parser.ReadSingle();
float ZSCA = parser.ReadSingle();
float XROT = parser.ReadSingle();
float YROT = parser.ReadSingle();
float ZROT = parser.ReadSingle();
float WROT = parser.ReadSingle();
float XPOS = parser.ReadSingle();
float YPOS = parser.ReadSingle();
float ZPOS = parser.ReadSingle();
float CSCA = parser.ReadSingle();
parser.Seek(dataOffset + header.CompressedDataOffset);
for (int frame = 0; frame < header.FrameCount; frame++)
{
AnimTrackTransform transform = new AnimTrackTransform()
{
X = XPOS,
Y = YPOS,
Z = ZPOS,
RX = XROT,
RY = YROT,
RZ = ZROT,
RW = WROT,
SX = XSCA,
SY = YSCA,
SZ = ZSCA,
CompensateScale = CSCA
};
for (int itemIndex = 0; itemIndex < items.Length; itemIndex++)
{
// First check if this track should be parsed
// TODO: Don't hard code these flags.
if (!((itemIndex == 0 && (header.Flags & 0x3) == 0x3) || //isotropic scale
(itemIndex >= 0 && itemIndex <= 2 && (header.Flags & 0x3) == 0x1) || //normal scale
(itemIndex > 2 && itemIndex <= 5 && (header.Flags & 0x4) > 0) ||
(itemIndex > 5 && itemIndex <= 8 && (header.Flags & 0x8) > 0)))
{
continue;
}
var item = items[itemIndex];
// Decompress
int valueBitCount = (int)item.Count;
if (valueBitCount == 0)
{
continue;
}
int value = parser.ReadBits(valueBitCount);
int scale = 0;
for (int k = 0; k < valueBitCount; k++)
{
scale |= 0x1 << k;
}
float frameValue = Lerp(item.Start, item.End, 0, 1, value / (float)scale);
if (float.IsNaN(frameValue))
{
frameValue = 0;
}
// the Transform type relies a lot on flags
if ((header.Flags & 0x3) == 0x3)
{
//Scale Compensate
if (itemIndex == 0)
{
transform.CompensateScale = frameValue;
}
}
if ((header.Flags & 0x3) == 0x1)
{
//Scale normal
switch (itemIndex)
{
case 0:
transform.SX = frameValue;
break;
case 1:
transform.SY = frameValue;
break;
case 2:
transform.SZ = frameValue;
break;
}
}
//Rotation and Position
switch (itemIndex)
{
case 3:
transform.RX = frameValue;
break;
case 4:
transform.RY = frameValue;
break;
case 5:
transform.RZ = frameValue;
break;
case 6:
transform.X = frameValue;
break;
case 7:
transform.Y = frameValue;
break;
case 8:
transform.Z = frameValue;
break;
}
}
// Rotations have an extra bit at the end
if ((header.Flags & 0x4) > 0)
{
bool wFlip = parser.ReadBits(1) == 1;
// W is calculated
transform.RW = (float)Math.Sqrt(Math.Abs(1 - (transform.RX * transform.RX + transform.RY * transform.RY + transform.RZ * transform.RZ)));
if (wFlip)
{
transform.RW = -transform.RW;
}
}
transforms[frame] = transform;
}
return(transforms);
}
