public RwKeyFrame(float time, Quaternion rotation, Vector3 translation, RwKeyFrame previous)
{
Time = time;
Rotation = rotation;
Translation = translation;
Previous = previous;
}
private void ReadUncompressedKeyFrames(BinaryReader reader)
{
var keyFrameByOffsetMap = new Dictionary <int, RwKeyFrame>();
for (int i = 0; i < KeyFrames.Capacity; i++)
{
var keyFrame = new RwKeyFrame
{
Time = reader.ReadSingle(),
Rotation = new Quaternion(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle()),
Translation = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle())
};
int previousKeyFrameOffset = reader.ReadInt32();
if (keyFrame.Time != 0.0f)
{
keyFrame.Previous = keyFrameByOffsetMap[previousKeyFrameOffset];
}
keyFrameByOffsetMap[i * UNCOMPRESSED_KEYFRAME_SIZE] = keyFrame;
KeyFrames.Add(keyFrame);
}
}
private void DecompressKeyframes(List <RwCompressedKeyFrame> compressedKeyFrames, RwCompressedKeyFrameCustomData customData)
{
var keyFrameByOffsetMap = new Dictionary <int, RwKeyFrame>();
for (int i = 0; i < compressedKeyFrames.Count; i++)
{
var compressedKeyFrame = compressedKeyFrames[i];
var keyFrame = new RwKeyFrame
{
Time = compressedKeyFrame.Time,
Rotation = new Quaternion
(
DecompressFloat(compressedKeyFrame.RotationX),
DecompressFloat(compressedKeyFrame.RotationY),
DecompressFloat(compressedKeyFrame.RotationZ),
DecompressFloat(compressedKeyFrame.RotationW)
),
Translation = new Vector3
(
(DecompressFloat(compressedKeyFrame.TranslationX) * customData.Scalar.X) +
customData.Offset.X,
(DecompressFloat(compressedKeyFrame.TranslationY) * customData.Scalar.Y) +
customData.Offset.Y,
(DecompressFloat(compressedKeyFrame.TranslationZ) * customData.Scalar.Z) +
customData.Offset.Z
)
};
if (keyFrame.Time != 0.0f)
{
keyFrame.Previous = keyFrameByOffsetMap[compressedKeyFrame.PreviousFrameOffset];
}
keyFrameByOffsetMap[i * COMPRESSED_KEYFRAME_SIZE] = keyFrame;
keyFrame.Dirty = false;
KeyFrames.Add(keyFrame);
}
}
public static RwAnimationNode FromAssimpScene(RwNode parent, RwFrameListNode frameList, string path)
{
var aiContext = new Assimp.AssimpContext();
var aiScene = aiContext.ImportFile(path);
var aiAnimation = aiScene.Animations.FirstOrDefault();
RwAnimationNode animationNode;
if (aiAnimation != null)
{
animationNode = new RwAnimationNode(parent, RwKeyFrameType.Uncompressed, ( float )(aiAnimation.DurationInTicks / aiAnimation.TicksPerSecond));
var nodeNameToHAnimId = aiAnimation.NodeAnimationChannels.ToDictionary(x => x.NodeName, x => frameList.GetNameIdByName(x.NodeName));
var nodeKeyframeTimes = aiAnimation.NodeAnimationChannels.SelectMany(x => x.PositionKeys)
.Select(x => x.Time)
.Concat(aiAnimation.NodeAnimationChannels.SelectMany(x => x.RotationKeys.Select(y => y.Time)))
.Distinct()
.OrderBy(x => x)
.ToList();
var previousKeyFrames = new Dictionary <int, RwKeyFrame>();
var nodeKeyFrames = new Dictionary <int, List <RwKeyFrame> >();
// Add initial pose
foreach (var hierarchyNode in frameList.AnimationRootNode.HAnimFrameExtensionNode.Hierarchy.Nodes)
{
var frame = frameList[frameList.GetFrameIndexByNameId(hierarchyNode.NodeId)];
var firstRotation = Quaternion.CreateFromRotationMatrix(frame.Transform);
var firstTranslation = frame.Transform.Translation;
var channel = aiAnimation.NodeAnimationChannels.FirstOrDefault(x => nodeNameToHAnimId[x.NodeName] == hierarchyNode.NodeId);
if (channel != null)
{
if (channel.HasRotationKeys)
{
firstRotation = ToQuaternion(channel.RotationKeys.First().Value);
}
if (channel.HasPositionKeys)
{
firstTranslation = ToVector3(channel.PositionKeys.First().Value);
}
}
var keyFrame = new RwKeyFrame(0, firstRotation, firstTranslation, null);
animationNode.KeyFrames.Add(keyFrame);
previousKeyFrames[hierarchyNode.NodeId] = keyFrame;
nodeKeyFrames[hierarchyNode.NodeId] = new List <RwKeyFrame>();
}
foreach (var keyFrameTime in nodeKeyframeTimes)
{
if (keyFrameTime == 0.0f)
{
continue;
}
foreach (var channel in aiAnimation.NodeAnimationChannels)
{
if (!channel.HasPositionKeys && !channel.HasRotationKeys)
{
continue;
}
if (!channel.RotationKeys.Any(x => x.Time == keyFrameTime) || !channel.PositionKeys.Any(x => x.Time == keyFrameTime))
{
continue;
}
var hierarchAnimNodeId = nodeNameToHAnimId[channel.NodeName];
var previousKeyFrame = previousKeyFrames[hierarchAnimNodeId];
var rotation = previousKeyFrame.Rotation;
var translation = previousKeyFrame.Translation;
var rotationKeys = channel.RotationKeys.Where(x => x.Time == keyFrameTime);
if (rotationKeys.Any())
{
var aiRotation = rotationKeys.First().Value;
rotation = new Quaternion(aiRotation.X, aiRotation.Y, aiRotation.Z, aiRotation.W);
}
var translationKeys = channel.PositionKeys.Where(x => x.Time == keyFrameTime);
if (translationKeys.Any())
{
var aiTranslation = translationKeys.First().Value;
translation = new Vector3(aiTranslation.X, aiTranslation.Y, aiTranslation.Z);
}
var keyFrame = new RwKeyFrame(( float )(keyFrameTime / aiAnimation.TicksPerSecond), rotation, translation, previousKeyFrame);
nodeKeyFrames[hierarchAnimNodeId].Add(keyFrame);
previousKeyFrames[hierarchAnimNodeId] = keyFrame;
}
}
while (!nodeKeyFrames.All(x => x.Value.Count == 0))
{
foreach (var kvp in nodeKeyFrames)
{
if (animationNode.KeyFrames.Count == 0)
{
continue;
}
var keyFrame = kvp.Value.First();
animationNode.KeyFrames.Add(keyFrame);
kvp.Value.Remove(keyFrame);
if (animationNode.KeyFrames.Count == 0)
{
var previousKeyFrame = previousKeyFrames[kvp.Key];
if (previousKeyFrame.Time != animationNode.Duration)
{
var lastRotation = previousKeyFrame.Rotation;
var lastTranslation = previousKeyFrame.Translation;
var channel = aiAnimation.NodeAnimationChannels.SingleOrDefault(x => nodeNameToHAnimId[x.NodeName] == kvp.Key);
if (channel != null)
{
if (channel.HasRotationKeys)
{
lastRotation = ToQuaternion(channel.RotationKeys.Last().Value);
}
if (channel.HasPositionKeys)
{
lastTranslation = ToVector3(channel.PositionKeys.Last().Value);
}
}
animationNode.KeyFrames.Add(new RwKeyFrame(animationNode.Duration, lastRotation, lastTranslation, previousKeyFrame));
}
}
}
}
}
else
{
animationNode = new RwAnimationNode(null, RwKeyFrameType.Uncompressed, 0f);
}
return(animationNode);
}