public static List <Bone> GetBoneHierarchy(CoreCollada.Collada file, Node current = null)
{
var bones = new List <Bone>();
var children = (current == null) ?
file.LibraryVisualScenes[0].Nodes.Where(a => a.Matrix != null).Take(1)
: current.Nodes;
foreach (var node in children)
{
var bone = new Bone()
{
Parent = (current == null) ? "" : current.SId,
JointMatrix = node.MatrixValue.TransposeMatrix(),
InverseBindMatrix = node.MatrixValue.TransposeMatrix().MatrixInverse(),
Id = node.SId,
Name = node.Name,
Children = node.Nodes.Select(a => a.SId).ToList()
};
bone.Keyframes = GetBoneKeyFrames(bone, file);
bones.Add(bone);
bones.AddRange(GetBoneHierarchy(file, node));
}
return(bones);
}
}// Constructor()
public Animator(CoreCollada.Collada file)
{
var bones = Bone.GetBoneHierarchy(file);
var boneCurveNodes = new SortedList <string, List <CoreFBX.FBX.Animation.FBXAnimCurveNode> >();
AnimationKeys = new Dictionary <string, List <AnimationKey> >();
PoseKeys = new Dictionary <string, AnimationKey>();
foreach (var bone in bones)
{
AnimationKeys.Add(bone.Id, bone.Keyframes);
}
}// Constructor(Collada)
public static List <AnimationKey> GetBoneKeyFrames(Bone bone, CoreCollada.Collada file)
{
var result = new List <AnimationKey>();
var animation = file.LibraryAnimations.Where(a => a.Name == bone.Id).FirstOrDefault();
if (animation != null)
{
var channel = (animation.Animations.Count > 0 && animation.Animations[0].Channels.Count > 0) ?
animation.Animations[0].Channels[0]
: null;
if (channel != null)
{
var inputName = animation.Animations[0].Samplers[0].Inputs[0].Source;
var outputName = animation.Animations[0].Samplers[0].Inputs[1].Source;
var interpolationName = animation.Animations[0].Samplers[0].Inputs[2].Source;
// time array
var sourceInput = animation.Animations[0].Sources.Where(a => a.Id == inputName.Substring(1)).FirstOrDefault();
// actual values
var sourceOutput = animation.Animations[0].Sources.Where(a => a.Id == outputName.Substring(1)).FirstOrDefault();
var sourceInterpolation = animation.Animations[0].Sources.Where(a => a.Id == interpolationName.Substring(1)).FirstOrDefault();
for (var i = 0; i < sourceInput.FloatValues.Length; i++)
{
result.Add(new AnimationKey()
{
Frame = (int)Math.Round(sourceInput.FloatValues[i] * 30),
Transform = sourceOutput.FloatValues.Skip(i * 16).Take(16).ToArray().TransposeMatrix()
});
}
}
}
return(result);
}
