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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: minAreaRect in OpenCV returns a rotated rectangle. How do I crop this part of the image which is inside the rectangle? boxPoints returns the co-ordinates of the corner points of the rotated rectangle so one can access the pixels by looping through the points inside the box, but is there a faster way to crop in Python? EDIT See code in my answer below. 回答1: You have not given sample code, so I am answering without code also. You could proceed as follows: From corners of rectangle, determine angle alpha of rotation against horizontal

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am using a HTML5 input box with type="number" . Regarding to some documentations, it should be possible to enter a number with comma (not with period) if I also use the lang="" attribute. It is working in Firefox, but not in Chrome (does not accept a comma). How can I get Chrome to accept the comma in the input box. My problem is that our German users expect that they can enter a comma instead of a period there. https://jsfiddle.net/byte2702/y3Lpfw7m/ Please enter a number with comma : 回答1: As of now (30/08/2017), Antoine Thiry's

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm trying to install Laravel Homestead on Mac OS X following the official documentation instructions on here . I installed VirtualBox and Vagrant. Now I'm trying to add the Homestead box with the command vagrant box add laravel/homestead . After a while the download stops and I get an error. It doesn't let me restore the download so I have to delete the partial download file and start from zero. I've tried it many times. I think my Internet connection has something to do since it's kinda slow and it's a large file. Here's the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: According to the Rust documentation: Vectors always allocate their data on the heap. As I understand this, it means that: Rust will allocate enough memory on the heap to store the type T in a contiguous fashion. Rust will not individually box the items as they are placed into the vector. In other words, if I add a few integers to a vector, while the Vec will allocate enough storage to store those integers, it's not also going to box those integers; introducing another layer of indirection. I'm not sure how I can illustrate or

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: So I know how to do a basic box shadow with CSS3. You can see that in the top of the graphic below. The effect I'm trying to achieve is a 3D box shadow, as shown in the bottom of the graphic below. Any ideas on how to do this with CSS3 box shadows? 回答1: Unfortunately box shadows are effectively just flat layers. However you can apply multiple box shadows to create this effect. .box-shadow-3d{ box-shadow: 1px 1px 0px #999, 2px 2px 0px #999, 3px 3px 0px #999, 4px 4px 0px #999, 5px 5px 0px #999, 6px 6px 0px #999; } 回答2: you can use pseudo

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Hi I am trying to use C to implement a simple struct: 2 boxes, each contains different number of particles; the exact number of particles are passed in main(). I wrote the following code: typedef struct Particle{ float x; float y; float vx; float vy; }Particle; typedef struct Box{ Particle p[]; }Box; void make_box(Box *box, int number_of_particles); int main(){ Box b1, b2; make_box(&b1, 5); //create a box containing 5 particles make_box(&b2, 10); //create a box containing 10 particles } I've tried to implement make_box with the following

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am using Oracle Virtual Box version 4.2.16 r86992. Everything was fine until yesterday shutdown. Today, it shows inaccessible and throws this error: Runtime error opening C : \Users\xxxxxx\VirtualBox VMs \v BoxxxxXubuntu_Beta \v BoxxxxXubuntu_Beta . vbox for reading : - 102 ( File not found .). D : \tinderbox\w in - 4.2 \src\V Box \Main\src - server\MachineImpl . cpp [ 725 ] ( long __cdecl Machine :: registeredInit ( void )). It's good to restore this to working, It would save lot of time and restore configuration settings and

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I have an array of hashes that represent compounds stored in boxes. database = [{ "Name" => "Compound1" , "Box" => 1 }, { "Name" => "Compound2" , "Box" => 1 }, { "Name" => "Compound2" , "Box" => 1 }, { "Name" => "Compound3" , "Box" => 1 }, { "Name" => "Compound4" , "Box" => 1 }, { "Name" => "Compound5" , "Box" => 2 }, { "Name" => "Compound6" , "Box" => 2 }, { "Name" => "Compound1" , "Box" => 3 }, { "Name" => "Compound2" , "Box" => 3 }, { "Name" => "Compound3" , "Box" => 3 }, { "Name" => "Compound7" , "Box" => 4 }] I would like to

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question is a slight modification of the bounding box example. I'm trying to understand how to draw simple shapes. I just want to replace the bounding box with a diagonal line from the upperLeft point to the lowerRight point. However, QLine() does not appear to have a show() method and viewport() has no addItem() method. So, I think the line is not being displayed. Here is my modification of the showBoxes method: def showLines(self): while self.boxes: self.boxes.pop() #self.boxes.pop().deleteLater() #Qline has no deleteLater(). Does

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Here is my question in short: How do I use the BackGroundWorker (or InvokeRequired method) to make thread-safe calls to append text to a text box? Here is my question in with much detail and background: I've been working on a program that copies file from one location to another for backup purposes. I set an option that will save a file when the file is modified using the FileSysteWatcher. Here is the code: Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load Dim directoryPath As String = Path