public static AnimationHandle AnimatePointTo(Graphic graphic, MapPoint newLocation, TimeSpan duration, GraphicsOverlay animationLayer = null)
{
if (!(graphic.Geometry is MapPoint))
{
throw new ArgumentException("Graphic must have a point geometry");
}
var start = graphic.Geometry as MapPoint;
if (start.SpatialReference != null && newLocation.SpatialReference != null && !start.SpatialReference.IsEqual(newLocation.SpatialReference))
{
start = GeometryEngine.Project(start, newLocation.SpatialReference) as MapPoint;
}
return(AnimationHandle.StartAnimation(
duration: duration,
onPulse: (normalizedTime) =>
{
double x = (newLocation.X - start.X) * normalizedTime + start.X;
double y = (newLocation.Y - start.Y) * normalizedTime + start.Y;
double z = double.NaN;
bool animateZ = newLocation.HasZ && start.HasZ;
if (animateZ)
{
z = (newLocation.Z - start.Z) * normalizedTime + start.Z;
}
graphic.Geometry = animateZ ? new MapPoint(x, y, z, start.SpatialReference) : new MapPoint(x, y, start.SpatialReference);
},
onStart: null,
onEnd: () => graphic.Geometry = newLocation,
repeat: false,
easing: null // new QuadraticEase() { EasingMode = EasingMode.EaseInOut }
));
}
public static AnimationHandle StartAnimation(TimeSpan duration, Action <double> onPulse, Action onStart = null, Action onEnd = null, bool repeat = false, EasingFunctionBase easing = null)
{
var handle = new AnimationHandle(duration, onPulse, onStart, onEnd, repeat, easing);
AnimatorHelper.QueueAnimation(handle);
return(handle);
}
internal static void QueueAnimation(AnimationHandle handle)
{
int count = 0;
lock (animationsLock)
{
animations.Add(handle);
count = animations.Count;
}
if (count == 1)
{
StartAnimationLoop();
}
}