//
public AnimationInstance(Animation anim)
{
animation_ = anim;
frameRate_ = anim.FrameRate;
// The time of the last frame is less than the duration of the animation,
// as the last frame has some duration itself.
lastFrameTime_ = (anim.NumFrames - 1) / frameRate_;
invFrameRate_ = 1.0f / frameRate_;
duration_ = anim.NumFrames * invFrameRate_;
int max = 0;
// calculate max bone index
// todo: do in content pipeline
foreach (KeyValuePair <int, AnimationTrack> kvp in anim.Tracks)
{
if (kvp.Key >= max)
{
max = kvp.Key + 1;
}
}
// Allocate animation keyframes (for lerping between times).
keyframes_ = new Keyframe[max];
// Load all the tracks (one track per bone).
tracks_ = new AnimationTrack[max];
foreach (int i in anim.Tracks.Keys)
{
keyframes_[i] = new Keyframe();
tracks_[i] = anim.Tracks[i];
}
}
protected override AnimationTrackDictionary Read(ContentReader input, AnimationTrackDictionary existingInstance)
{
if (existingInstance == null)
{
existingInstance = new AnimationTrackDictionary();
}
int num = input.ReadInt32();
for (int i = 0; i != num; ++i)
{
int index = input.ReadInt32();
AnimationTrack track = input.ReadObject <AnimationTrack>();
existingInstance.Add(index, track);
}
return(existingInstance);
}