public override void ViewDidAppear(bool animated)
{
base.ViewDidAppear(animated);
TKChartVisualPoint[] points = chart.VisualPointsForSeries(chart.Series [0]);
originalValues = new List <CGPoint> ();
foreach (TKChartVisualPoint p in points)
{
originalValues.Add(p.CGPoint);
}
TKChartVisualPoint point = points[4];
UISnapBehavior snap = new UISnapBehavior(point, point.Center);
snap.Damping = 0.2f;
UIPushBehavior push = new UIPushBehavior(new IUIDynamicItem[] { point }, UIPushBehaviorMode.Instantaneous);
push.PushDirection = new CGVector(0.0f, -1.0f);
push.Magnitude = 0.003f;
UIDynamicAnimator animator = new UIDynamicAnimator();
animator.AddBehavior(snap);
animator.AddBehavior(push);
point.Animator = animator;
}
public void applyGravity()
{
if (firstTime)
{
firstTime = false;
TKChartVisualPoint[] points1 = chart.VisualPointsForSeries(chart.Series [0]);
originalValues = new List <CGPoint> ();
foreach (TKChartVisualPoint p in points1)
{
originalValues.Add(p.CGPoint);
}
TKChartVisualPoint point1 = points1 [4];
originalLocation = point1.Center;
}
// >> chart-anim-gravity-cs
animator = new UIDynamicAnimator(chart.PlotView);
TKChartVisualPoint[] points = chart.VisualPointsForSeries(chart.Series [0]);
TKChartVisualPoint point = points [4];
for (int i = 0; i < originalValues.Count; i++)
{
TKChartVisualPoint pt = points [i];
if (pt.Animator != null)
{
pt.Animator.RemoveAllBehaviors();
pt.Animator = null;
}
pt.Center = ((CGPoint)originalValues[i]);
}
point.Center = new CGPoint(originalLocation.X, 0);
UICollisionBehavior collision = new UICollisionBehavior(points);
collision.TranslatesReferenceBoundsIntoBoundary = true;
UIGravityBehavior gravity = new UIGravityBehavior(points);
gravity.GravityDirection = new CGVector(0.0f, 2.0f);
UIDynamicItemBehavior dynamic = new UIDynamicItemBehavior(points);
dynamic.Elasticity = 0.5f;
animator.AddBehavior(dynamic);
animator.AddBehavior(gravity);
animator.AddBehavior(collision);
// << chart-anim-gravity-cs
}
