private Point GetAnimationStep(Point startPos, Point finalPos, double elapsedTime, double totalTime)
{
double x = TableflowViewAnimationHelper.GetAnimationStep(startPos.X, finalPos.X, elapsedTime, totalTime);
double y = TableflowViewAnimationHelper.GetAnimationStep(startPos.Y, finalPos.Y, elapsedTime, totalTime);
return(new Point(x, y));
}
protected override double GetCurrentValueCore(double defaultOriginValue, double defaultDestinationValue, AnimationClock animationClock)
{
Nullable <double> to = this.To;
Nullable <double> from = this.From;
if (!from.HasValue)
{
from = defaultOriginValue;
}
if (!to.HasValue)
{
to = defaultDestinationValue;
}
double toValue = to.GetValueOrDefault();
double fromValue = from.GetValueOrDefault();
if ((!animationClock.CurrentProgress.HasValue) ||
(animationClock.CurrentProgress.Value == 1))
{
return(toValue);
}
if (animationClock.CurrentProgress.Value == 0)
{
return(fromValue);
}
double totalTime = animationClock.Timeline.Duration.TimeSpan.TotalMilliseconds;
double elapsedTime = totalTime * animationClock.CurrentProgress.Value;
if (elapsedTime >= totalTime)
{
return(toValue);
}
double animationStep = TableflowViewAnimationHelper.GetAnimationStep(fromValue, toValue, elapsedTime, totalTime);
if (DoubleUtil.AreClose(animationStep, toValue))
{
return(toValue);
}
return(animationStep);
}