protected override Single GetCurrentValue(Single defaultOriginValue, Single defaultDestinationValue, AnimationClock animationClock)
{
if (baseValue == Single.PositiveInfinity)
{
baseValue = defaultOriginValue;
}
if (_currentKeyFrameIndex >= (KeyFrames.Count()))
{
if (animationClock.TimeSpan.Seconds == 0)
this._currentKeyFrameIndex = 0;
else
return baseValue;
}
// check if key frame is complete.
if (animationClock.TimeSpan.TotalMilliseconds >= KeyFrames[_currentKeyFrameIndex].KeyTime.TimeSpan.TotalMilliseconds)
{
_lastKeyFrameTime = KeyFrames[_currentKeyFrameIndex].KeyTime.TimeSpan.TotalMilliseconds;
var value = KeyFrames[_currentKeyFrameIndex].Value;
baseValue = value;
_currentKeyFrameIndex++;
return value;
}
var currentKeyFrame = KeyFrames[_currentKeyFrameIndex];
var ellapsedTime = animationClock.TimeSpan.TotalMilliseconds - _lastKeyFrameTime;
var totalTime = currentKeyFrame.KeyTime.TimeSpan.TotalMilliseconds - _lastKeyFrameTime;
if (totalTime == 0)
{
return currentKeyFrame.InterpolateValue(baseValue, 1.0f);
}
else
{
return currentKeyFrame.InterpolateValue(baseValue, (Single)(ellapsedTime / totalTime ));
}
}
public Storyboard()
{
_clock = new AnimationClock();
}
public AnimationClockController(AnimationClock clock, TimeSpan duration, Boolean shouldAutoRepeat)
{
this._clock = clock;
this._duration = duration;
this._shouldAutoRepeat = shouldAutoRepeat;
}
public AnimationClockController(AnimationClock clock, TimeSpan duration)
: this (clock, duration, false)
{
}
protected abstract Single GetCurrentValue(Single defaultOriginValue, Single defaultDestinationValue, AnimationClock animationClock);
public override Object GetCurrentValue(Object defaultOriginValue, Object defaultDestinationValue, AnimationClock animationClock)
{
return GetCurrentValue(Convert.ToSingle(defaultOriginValue), 0f, animationClock);
}
public void ApplyAnimationClock(AnimationClock clock)
{
this._clock = clock;
}
public virtual Object GetCurrentValue(Object defaultOriginValue, Object defaultDestinationValue, AnimationClock animationClock)
{
return null;
}