private static void ApplyTiltEffect(FrameworkElement element, Point touchPoint, Point centerPoint)
{
TiltEffect.ResetTiltReturnStoryboard();
Point point = new Point(Math.Min(Math.Max(touchPoint.X / (centerPoint.X * 2.0), 0.0), 1.0), Math.Min(Math.Max(touchPoint.Y / (centerPoint.Y * 2.0), 0.0), 1.0));
if (double.IsNaN(point.X) || double.IsNaN(point.Y))
{
return;
}
double num1 = Math.Abs(point.X - 0.5);
double num2 = Math.Abs(point.Y - 0.5);
double num3 = (double)-Math.Sign(point.X - 0.5);
double num4 = (double)Math.Sign(point.Y - 0.5);
double num5 = num1 + num2;
double num6 = num1 + num2 > 0.0 ? num1 / (num1 + num2) : 0.0;
double num7 = num5 * 0.3 * 180.0 / Math.PI;
double num8 = (1.0 - num5) * 25.0;
PlaneProjection planeProjection = element.Projection as PlaneProjection;
double num9 = num7 * num6 * num3;
planeProjection.RotationY = num9;
double num10 = num7 * (1.0 - num6) * num4;
planeProjection.RotationX = num10;
double num11 = -num8;
planeProjection.GlobalOffsetZ = num11;
}
private static void TryStartTiltEffect(FrameworkElement source, ManipulationStartedEventArgs e)
{
foreach (FrameworkElement visualAncestor in (e.OriginalSource as FrameworkElement).GetVisualAncestors())
{
foreach (Type tiltableItem in TiltEffect.TiltableItems)
{
if (tiltableItem.IsAssignableFrom(visualAncestor.GetType()))
{
FrameworkElement frameworkElement1 = !(visualAncestor.ReadLocalValue(TiltEffect.SuppressTiltProperty) is bool) ? visualAncestor.GetVisualAncestors().FirstOrDefault <FrameworkElement>((Func <FrameworkElement, bool>)(x => x.ReadLocalValue(TiltEffect.SuppressTiltProperty) is bool)) : visualAncestor;
if (frameworkElement1 == null || !(bool)frameworkElement1.ReadLocalValue(TiltEffect.SuppressTiltProperty))
{
FrameworkElement element = VisualTreeHelper.GetChild((DependencyObject)visualAncestor, 0) as FrameworkElement;
FrameworkElement frameworkElement2 = e.ManipulationContainer as FrameworkElement;
if (element == null || frameworkElement2 == null)
{
return;
}
Point touchPoint = frameworkElement2.TransformToVisual((UIElement)element).Transform(e.ManipulationOrigin);
Point centerPoint = new Point(element.ActualWidth / 2.0, element.ActualHeight / 2.0);
Point centerToCenterDelta = TiltEffect.GetCenterToCenterDelta(element, source);
TiltEffect.BeginTiltEffect(element, touchPoint, centerPoint, centerToCenterDelta);
return;
}
}
}
}
}
private static void TiltReturnStoryboard_Completed(object sender, EventArgs e)
{
if (TiltEffect.wasPauseAnimation)
{
TiltEffect.ResetTiltEffect(TiltEffect.currentTiltElement);
}
else
{
TiltEffect.StopTiltReturnStoryboardAndCleanup();
}
}
private static void StopTiltReturnStoryboardAndCleanup()
{
if (TiltEffect.tiltReturnStoryboard != null)
{
TiltEffect.tiltReturnStoryboard.Stop();
}
if (TiltEffect.currentTiltElement == null)
{
return;
}
TiltEffect.RevertPrepareControlForTilt(TiltEffect.currentTiltElement);
TiltEffect.currentTiltElement = null;
}
private static void BeginTiltEffect(FrameworkElement element, Point touchPoint, Point centerPoint, Point centerDelta)
{
if (TiltEffect.tiltReturnStoryboard != null)
{
TiltEffect.StopTiltReturnStoryboardAndCleanup();
}
if (!TiltEffect.PrepareControlForTilt(element, centerDelta))
{
return;
}
TiltEffect.currentTiltElement = element;
TiltEffect.currentTiltElementCenter = centerPoint;
TiltEffect.PrepareTiltReturnStoryboard(element);
TiltEffect.ApplyTiltEffect(TiltEffect.currentTiltElement, touchPoint, TiltEffect.currentTiltElementCenter);
}
private static void TryStartTiltEffect(FrameworkElement source, ManipulationStartedEventArgs e)
{
IEnumerator <FrameworkElement> enumerator1 = (((RoutedEventArgs)e).OriginalSource as FrameworkElement).GetVisualAncestors().GetEnumerator();
try
{
while (((IEnumerator)enumerator1).MoveNext())
{
FrameworkElement current = enumerator1.Current;
List <Type> .Enumerator enumerator2 = TiltEffect.TiltableItems.GetEnumerator();
try
{
while (enumerator2.MoveNext())
{
if (enumerator2.Current.IsAssignableFrom((current).GetType()))
{
FrameworkElement frameworkElement = !(current.ReadLocalValue(TiltEffect.SuppressTiltProperty) is bool) ? current.GetVisualAncestors().FirstOrDefault <FrameworkElement>((Func <FrameworkElement, bool>)(x => x.ReadLocalValue(TiltEffect.SuppressTiltProperty) is bool)) : current;
if (frameworkElement == null || !(bool)((DependencyObject)frameworkElement).ReadLocalValue(TiltEffect.SuppressTiltProperty))
{
FrameworkElement child = VisualTreeHelper.GetChild((DependencyObject)current, 0) as FrameworkElement;
FrameworkElement manipulationContainer = e.ManipulationContainer as FrameworkElement;
if (child == null || manipulationContainer == null)
{
return;
}
Point touchPoint = ((UIElement)manipulationContainer).TransformToVisual((UIElement)child).Transform(e.ManipulationOrigin);
Point centerPoint = new Point(child.ActualWidth / 2.0, child.ActualHeight / 2.0);
Point centerToCenterDelta = TiltEffect.GetCenterToCenterDelta(child, source);
TiltEffect.BeginTiltEffect(child, touchPoint, centerPoint, centerToCenterDelta);
return;
}
}
}
}
finally
{
enumerator2.Dispose();
}
}
}
finally
{
if (enumerator1 != null)
{
((IDisposable)enumerator1).Dispose();
}
}
}
private static void ContinueTiltEffect(FrameworkElement element, ManipulationDeltaEventArgs e)
{
FrameworkElement frameworkElement = e.ManipulationContainer as FrameworkElement;
if (frameworkElement == null || element == null)
{
return;
}
Point point = frameworkElement.TransformToVisual((UIElement)element).Transform(e.ManipulationOrigin);
if (!new Rect(0.0, 0.0, TiltEffect.currentTiltElement.ActualWidth, TiltEffect.currentTiltElement.ActualHeight).Contains(point))
{
TiltEffect.PauseTiltEffect();
}
else
{
TiltEffect.ApplyTiltEffect(TiltEffect.currentTiltElement, point, TiltEffect.currentTiltElementCenter);
}
}
private static void EndTiltEffect(FrameworkElement element)
{
if (element != null)
{
element.ManipulationCompleted -= new EventHandler <ManipulationCompletedEventArgs>(TiltEffect.TiltEffect_ManipulationCompleted);
element.ManipulationDelta -= new EventHandler <ManipulationDeltaEventArgs>(TiltEffect.TiltEffect_ManipulationDelta);
}
if (TiltEffect.tiltReturnStoryboard != null)
{
TiltEffect.wasPauseAnimation = false;
if (TiltEffect.tiltReturnStoryboard.GetCurrentState() == ClockState.Active)
{
return;
}
TiltEffect.tiltReturnStoryboard.Begin();
}
else
{
TiltEffect.StopTiltReturnStoryboardAndCleanup();
}
}
private static void ContinueTiltEffect(FrameworkElement element, ManipulationDeltaEventArgs e)
{
FrameworkElement manipulationContainer = e.ManipulationContainer as FrameworkElement;
if (manipulationContainer == null || element == null)
{
return;
}
Point touchPoint = ((UIElement)manipulationContainer).TransformToVisual((UIElement)element).Transform(e.ManipulationOrigin);
Rect rect = new Rect(0.0, 0.0, TiltEffect.currentTiltElement.ActualWidth, TiltEffect.currentTiltElement.ActualHeight);
// ISSUE: explicit reference operation
if (!rect.Contains(touchPoint))
{
TiltEffect.PauseTiltEffect();
}
else
{
TiltEffect.ApplyTiltEffect(TiltEffect.currentTiltElement, touchPoint, TiltEffect.currentTiltElementCenter);
}
}
private static void TiltEffect_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
TiltEffect.ContinueTiltEffect(sender as FrameworkElement, e);
}
private static void TiltEffect_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
{
TiltEffect.TryStartTiltEffect(sender as FrameworkElement, e);
}
private static void TiltEffect_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
{
TiltEffect.EndTiltEffect(TiltEffect.currentTiltElement);
}
