// Construct the Armature object from mesh skeleton KV data.
public void ConstructFromNTRO(NTROStruct skeletonData, Dictionary <int, int> remapTable)
{
var boneNames = skeletonData.Get <NTROArray>("m_boneName").ToArray <string>();
var boneParents = skeletonData.Get <NTROArray>("m_nParent").ToArray <short>();
var bonePositions = skeletonData.Get <NTROArray>("m_bonePosParent").ToArray <Vector3>();
var boneRotations = skeletonData.Get <NTROArray>("m_boneRotParent").ToArray <Vector4>();
// Initialise bone array
Bones = new Bone[boneNames.Length];
//Add all bones to the list
for (var i = 0; i < boneNames.Length; i++)
{
var name = boneNames[i];
var position = new OpenTK.Vector3(bonePositions[i].X, bonePositions[i].Y, bonePositions[i].Z);
var rotation = new Quaternion(boneRotations[i].X, boneRotations[i].Y, boneRotations[i].Z, boneRotations[i].W);
// Create bone
var index = remapTable.ContainsKey(i) ? remapTable[i] : -1;
var bone = new Bone(name, index, position, rotation);
if (boneParents[i] != -1)
{
bone.SetParent(Bones[boneParents[i]]);
Bones[boneParents[i]].AddChild(bone);
}
Bones[i] = bone;
}
FindRoots();
}
/// <summary>
/// Construct an animation class from the animation description
/// </summary>
/// <param name="animDesc"></param>
/// <param name="decodeKey"></param>
/// <param name="decoderArray"></param>
/// <param name="segmentArray"></param>
private void ConstructFromDesc(NTROStruct animDesc, NTROStruct decodeKey, AnimDecoderType[] decoderArray, NTROArray segmentArray)
{
// Get animation properties
Name = animDesc.Get <string>("m_name");
Fps = animDesc.Get <float>("fps");
// Only consider first frame block for now
var pData = animDesc.Get <NTROArray>("m_pData").Get <NTROStruct>(0);
var frameBlockArray = pData.Get <NTROArray>("m_frameblockArray").ToArray <NTROStruct>();
FrameCount = pData.Get <int>("m_nFrames");
Frames = new Frame[FrameCount];
// Figure out each frame
for (var frame = 0; frame < FrameCount; frame++)
{
// Create new frame object
Frames[frame] = new Frame();
// Read all frame blocks
foreach (var frameBlock in frameBlockArray)
{
var startFrame = frameBlock.Get <int>("m_nStartFrame");
var endFrame = frameBlock.Get <int>("m_nEndFrame");
// Only consider blocks that actual contain info for this frame
if (frame >= startFrame && frame <= endFrame)
{
var segmentIndexArray = frameBlock.Get <NTROArray>("m_segmentIndexArray").ToArray <int>();
foreach (var segmentIndex in segmentIndexArray)
{
var segment = segmentArray.Get <NTROStruct>(segmentIndex);
ReadSegment(frame - startFrame, segment, decodeKey, decoderArray, ref Frames[frame]);
}
}
}
}
}
/// <summary>
/// Read segment
/// </summary>
/// <param name="frame"></param>
/// <param name="segment"></param>
/// <param name="decodeKey"></param>
/// <param name="decoderArray"></param>
/// <param name="outFrame"></param>
private void ReadSegment(int frame, NTROStruct segment, NTROStruct decodeKey, AnimDecoderType[] decoderArray, ref Frame outFrame)
{
// Clamp the frame number to be between 0 and the maximum frame
frame = frame < 0 ? 0 : frame;
frame = frame >= FrameCount ? FrameCount - 1 : frame;
var localChannel = segment.Get <int>("m_nLocalChannel");
var dataChannel = decodeKey.Get <NTROArray>("m_dataChannelArray").Get <NTROStruct>(localChannel);
var boneNames = dataChannel.Get <NTROArray>("m_szElementNameArray").ToArray <string>();
var channelAttribute = dataChannel.Get <string>("m_szVariableName");
// Read container
var container = segment.Get <NTROArray>("m_container").ToArray <byte>();
using (var containerReader = new BinaryReader(new MemoryStream(container)))
{
var elementIndexArray = dataChannel.Get <NTROArray>("m_nElementIndexArray").ToArray <int>();
var elementBones = new int[decodeKey.Get <int>("m_nChannelElements")];
for (var i = 0; i < elementIndexArray.Length; i++)
{
elementBones[elementIndexArray[i]] = i;
}
// Read header
var decoder = decoderArray[containerReader.ReadInt16()];
var cardinality = containerReader.ReadInt16();
var numBones = containerReader.ReadInt16();
var totalLength = containerReader.ReadInt16();
// Read bone list
var elements = new List <int>();
for (var i = 0; i < numBones; i++)
{
elements.Add(containerReader.ReadInt16());
}
// Skip data to find the data for the current frame.
// Structure is just | Bone 0 - Frame 0 | Bone 1 - Frame 0 | Bone 0 - Frame 1 | Bone 1 - Frame 1|
if (containerReader.BaseStream.Position + (decoder.Size() * frame * numBones) < containerReader.BaseStream.Length)
{
containerReader.BaseStream.Position += decoder.Size() * frame * numBones;
}
// Read animation data for all bones
for (var element = 0; element < numBones; element++)
{
// Get the bone we are reading for
var bone = elementBones[elements[element]];
// Look at the decoder to see what to read
switch (decoder)
{
case AnimDecoderType.CCompressedStaticFullVector3:
case AnimDecoderType.CCompressedFullVector3:
case AnimDecoderType.CCompressedDeltaVector3:
outFrame.SetAttribute(boneNames[bone], channelAttribute, new Vector3(
containerReader.ReadSingle(),
containerReader.ReadSingle(),
containerReader.ReadSingle()));
break;
case AnimDecoderType.CCompressedAnimVector3:
case AnimDecoderType.CCompressedStaticVector3:
outFrame.SetAttribute(boneNames[bone], channelAttribute, new Vector3(
ReadHalfFloat(containerReader),
ReadHalfFloat(containerReader),
ReadHalfFloat(containerReader)));
break;
case AnimDecoderType.CCompressedAnimQuaternion:
outFrame.SetAttribute(boneNames[bone], channelAttribute, ReadQuaternion(containerReader));
break;
#if DEBUG
default:
if (channelAttribute != "data")
{
Console.WriteLine($"Unhandled animation bone decoder type '{decoder}'");
}
break;
#endif
}
}
}
}