I have a heavily optimized JavaScript app, a highly interactive graph editor. I now started profiling it (using Chrome dev-tools) with massive amounts of data (thousands of shapes in the graph), an...

I want to create an Interface in which it is possible to drag your finger over several Areas. This changes the state of the areas to a selected state (See images). What is the best way to approach ...

I'm new to this and currently building an AR-related application, on the old version I stated this let results = self.hitTest(screenPosition, types: [.featurePoint]) and now I have a problem where...

One of my old apps is not working with iOS8. When I start the app up, and try to tap on the screen anywhere, I get this message in my console: unexpected nil window in _UIApplicationHandleEventFro...

The polygon is given as a list of Vector2I objects (2 dimensional, integer coordinates). How can i test if a given point is inside? All implementations i found on the web fail for some trivial coun...

Is there a way to gain the type of touch gestures that triggered a UIEvent? So, let's say I intercept a gesture with hitTest:withEvent:. How do I identify what kind of touch (pinch, tap, swipe, etc...

In my renderer delegate I create a raycast query from the center of the view to track estimated plane and display a 3D pointer that follows the raycast result. It is done via view.raycastQuery(fro...

I have a message which is within a border and is displayed in front of a MDI client area. Because it's just a message, I set it's IsHitTestVisible to false. For convenience, I've also included a bu...

I am trying to intercept any activity (i.e. touches) that happens inside my whole application. In other words, I am trying to be notified of any touch event that happens within my main UIView, con...

I would like to allow the user to draw curves in such a way that no line can cross another line or even itself. Drawing the curves is no problem, and I even found that I can create a path that is c...

I have a simple - trivial - UIView parent/child hierarchy. One parent (UIView). One child (UIButton). The parents bounds are smaller then it's child's bounds so that a portion of the child extends ...

Edited See the comment section with Nathan for the latest project. There is only problem remaining: getting the right button. Edited I want to have a UIView that the user can rotate. That UIView...

Is it possible to ignore an object in SceneKit's hitTest so that when the hitTest ray is sent, it goes through an object? I still want to see both objects, i just want the ray to ignore another. H...

The browsers which have implemented parts of the SVG spec (Firefox etc) do hit-testing for us for free - if I attach a mousedown listener on an SVG object, I get notified whenever the shape is clic...

in WPF when using VisualTreeHelper.HitTest even hidden Elements are found. To skip this elements and only return a result for visible ones, i created a HitTestFilter like the following : ///This F...

This is my problem: I work with SpriteKit and I want to ignore touch event when it occurs in some rectangle (prevent calling touchesBegan). The way how I would like to do it is something like "ov...

I'm tying to create an app with SceneKit to solve a Rubik's Cube. I've made my own dae file for the cube. Upon touches began I have the object that's been hit func tapGesture(sender: UITapGestureR...

Bug — hit-testing doesn't work as intended when siblings overlap: There are 2 overlapping nodes in a scene which have the same parent (ie. siblings) The topmost node has userInteractionEnable...

I'm new to SceneKit and 3D spaces in iOS. I'm currently working on a simple game that shows a cube of 28 segments ("mini cubes" if you want). I want to move the mini cubes by tapping them, but I c...

I have a custom UIControl that contains a few other controls. In between those controls there is empty space and background of my UIControl needs to be transparent. I need to catch all touch event...

I have an Ellipse on a Canvas and I'm doing Hit Testing on it. Every time I click the stroke of the Ellipse, the test passes. If I click in the middle of the Ellipse, the test fails. This is good! ...

couldn't find a solution for that. I am building an app, with big scroll view, who has paging (Horizontal). Inside this scroll view, there is a grid of UIView's, and an UIScrollview inside each on...

I have 2 views , but i want to make 1 view (virtually) bigger. if I place my tapGesture on v1, the tap gesture works with a bigger hit area but if I place my tapGesture on v2 it doesn't work ( act...

I have this rectangle in XAML : <Rectangle x:Name="MyRectangle" Height="300" Width="300"></Rectangle> I want to check if it intersects with another rectangle. In this question on SO,...

I would like to perform a rectangual hit test on WPF Canvas component in order to get Controls that are overlapped by a Rectangle framework element. I found a Silverlight's VisualTreeHelper.FindEle...