public float CalculateKeyframeValue(int time)
{
Type0_Keyframe before = GetKeyframeBefore(time);
Type0_Keyframe after = GetKeyframeAfter(time);
if (after == null)
{
after = new Type0_Keyframe()
{
Index = ushort.MaxValue, Float = before.Float
};
}
//Frame difference between previous frame and the current frame (current frame is AFTER the frame we want)
int diff = after.Index - before.Index;
//Keyframe value difference
float keyframe2 = after.Float - before.Float;
//Difference between the frame we WANT and the previous frame
int diff2 = time - before.Index;
//Divide keyframe value difference by the keyframe time difference, and then multiply it by diff2, then add the previous keyframe value
return((keyframe2 / diff) * diff2 + before.Float);
}
/// <summary>
/// Returns the keyframe that appears just before the specified frame
/// </summary>
/// <returns></returns>
public Type0_Keyframe GetKeyframeBefore(int time)
{
SortKeyframes();
Type0_Keyframe prev = null;
foreach (var keyframe in Keyframes)
{
if (keyframe.Index >= time)
{
break;
}
prev = keyframe;
}
return(prev);
}
public void AddKeyframesFromAnim(Type0 anim)
{
foreach (var keyframe in anim.Keyframes)
{
var existing = GetKeyframe(keyframe.Index);
if (existing == null)
{
var newKeyframe = new Type0_Keyframe()
{
Index = keyframe.Index, Float = GetValue(keyframe.Index)
};
Keyframes.Add(newKeyframe);
}
}
}
