AddQuadCurveToPoint() public method

public AddQuadCurveToPoint ( CGAffineTransform transform, float cpx, float cpy, float x, float y ) : void
transform CGAffineTransform
cpx float
cpy float
x float
y float
return void
CGPath Class Documentation
示例#1
0
		private void FlyTheShirt(PointF startPoint)
		{
			// Reset starting point of the ImageView
			ivFlyingShirt.Frame = new RectangleF(startPoint.X, startPoint.Y, ivFlyingShirt.Frame.Width, ivFlyingShirt.Frame.Height);

			NSMatrix matrix = (NSMatrix)btnNavigationProducts.ControlView;
			int lastRowIndex = matrix.Rows - 1;
			// Assuming the shopping basket button is always the last in the list...
			var btnFrame = matrix.CellFrameAtRowColumn (lastRowIndex, 0);
			var btnCenter = new PointF (btnFrame.Left + (btnFrame.Width / 2), btnFrame.Top + (btnFrame.Height / 2));
			var btnCenterCompensated = new PointF (btnCenter.X - (ivFlyingShirt.Frame.Width / 2), btnCenter.Y + (ivFlyingShirt.Frame.Height / 2));
			var endPoint = matrix.ConvertPointToView (btnCenterCompensated, matrix.Superview);

			// Create quadratic curve path
			var path = new CGPath ();
			path.MoveToPoint (startPoint);
			// Use the view title label as the control point for the curve
			var controlPoint = lblViewTitle.Superview.ConvertPointToView(new PointF(lblViewTitle.Frame.Left + (lblViewTitle.Frame.Width/3), lblViewTitle.Frame.Bottom), null);
			path.AddQuadCurveToPoint (controlPoint.X, controlPoint.Y, endPoint.X, endPoint.Y);

			// Create animation based on the path and add it to the image view
			var pathAnimation = CAKeyFrameAnimation.GetFromKeyPath ("frameOrigin");
			pathAnimation.Path = path;
			pathAnimation.RepeatCount = 0f;
			pathAnimation.Duration = 0.7f;
			pathAnimation.TimingFunction = CAMediaTimingFunction.FromName (CAMediaTimingFunction.EaseInEaseOut);
			pathAnimation.AnimationStarted += delegate {
				// Show the ImageView
				ivFlyingShirt.Hidden = false;
			};
			pathAnimation.AnimationStopped += delegate {
				// Hide the ImageView
				ivFlyingShirt.Hidden = true;
				badgeView.BadgeNumber = WebService.Shared.CurrentOrder.Products.Count;
			};

			ivFlyingShirt.Animations = NSDictionary.FromObjectAndKey (pathAnimation, (NSString)"frameOrigin");

			// Change the frame location via animation
			((NSImageView) ivFlyingShirt.Animator).Frame = new RectangleF(endPoint, ivFlyingShirt.Frame.Size);
		}