frame

问题 This issue has been happening for days: I cannot set the specific frame I need. I need my SKShapeNode frame to be the bounding box around a circle so that it is an inscribed circle to the frame. The blue is the current frame and the red is the frame I want it to be. I am creating the SKShapeNode like this: init(level: Int, from: SKSpriteNode, fromScene: GameScene) { self.level = level self.from = from self.fromScene = fromScene bezierPath = UIBezierPath(arcCenter: CGPoint.zero, radius:

问题 I'm trying to write a script that can use a reading frame of 3 to detect a certain pattern and then from that sequence, go in multiples of 3 to find another pattern sequence = 'TCATGAGGCTTTGGTAAATAT' i need it to: ...scan with a reading frame of 3 until it finds a desired pattern (i.e. 'ATG') ...mark the location of where the first pattern ('ATG') started in the original sequence and the position of where the second pattern started ('TAA'). In this case, it would be position 3 for 'ATG' and

问题 I'm doing an app to record a video. What I would like is that when the app is recording the video, each frame is also saved in an arraylist of RGB values in order to extract particular information from it. I know that the two processes (video recording and extraction of frames) are asynchronous, but this is not a problem: the process of extraction can finish after the video recording. Can someone tell me how I can extract the frames from the video? Thanks very much. 回答1: Using the camera

问题 I'm doing an app to record a video. What I would like is that when the app is recording the video, each frame is also saved in an arraylist of RGB values in order to extract particular information from it. I know that the two processes (video recording and extraction of frames) are asynchronous, but this is not a problem: the process of extraction can finish after the video recording. Can someone tell me how I can extract the frames from the video? Thanks very much. 回答1: Using the camera

问题 does anyone know the difference between defining a vertical scrollbar on a frame like this: <ScrollViewer Grid.Row="2" VerticalScrollBarVisibility="Auto"> <Frame Name="Frame1" ScrollViewer.CanContentScroll="True" /> </ScrollViewer> or like this: <ScrollViewer Grid.Row="2"> <Frame Name="Frame1" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.CanContentScroll="True" /> </ScrollViewer> This frame is nested in a WebBrowser control and setting it the first way correctly displays the

问题 I have no experience with frames. How to use a Tree View with frames? I need to switch among nods of the Tree View and show assigned Frame to the selected node. Big big thank for help!!! 回答1: It doesn't really make any difference if the Data of nodes hold a pointer to a frame or any other kind of object, typecast the pointer to the type of object it holds. Below code adds two frames ('Frame2' and 'Frame3', created by the IDE - much like a new form), as nodes of a TreeView, and sets the

问题 In python you can compile() string to be executed faster with exec(). But as soon as i use it, we lost information when an exception happen in the exec. For example, here is a code snippet that calling a unknown method (for demo purposes): code = 'my_unknown_method()' bytecode = compile(code, '<string>', 'exec') And later, i'm calling exec on that bytecode: exec bytecode The traceback showed is: Traceback (most recent call last): File "test.py", line 3, in <module> exec bytecode File "<string

问题 One of my APIs accepts an mp4 video file and then uploads the file to my cloud (AWS-S3). I read the video from the body, which means the whole video is in a raw []byte format, and then directly pipe it to my storage. The problem is, those videos are quite large and when the user wants to download the video, he needs to wait quite a long time. Showing a black screen with a progress bar for 30 seconds obviously hurts the user experience. I need to show him at least some kind of preview in the

问题 I have a UICollection view that is inside another UIView. I am trying to center the collection view inside its parent view. Currently manually doing it by tweaking its frame (see code below). There has to be a easier way. CURRENT CODE: self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(COLLECTION_PADDING+10, COLLECTION_PADDING+5, self.bounds.size.width - (COLLECTION_PADDING*2), self.bounds.size.height - (COLLECTION_PADDING+22)) collectionViewLayout:flow]; 回答1: You could

问题 I wonder, how and when (viewDidLoad, viewWillAppear, viewDidAppear) can I get a UIViews frame size that was autoresized to fit its partent view? 回答1: It's not clear from your question why you want it but I imagine it is to layout your sub views. Luckily Apple knew you would want to do that and implemented -(void)layoutSubViews see this: When is layoutSubviews called? 回答2: I tried layoutSubviews , but it gets called more than once which is a problem when I need the auto sized frame in order to