rectx | a light-weight state manager | State Container library

• I have 4 red markers inside an image, I'm detecting their contours and getting a rectangular coordinates [x0,y0,w,h].

• my goal is to identify the corners in this sequence:

• my problem is when I apply this cool answer I face a problem sometimes because of the sorting according to Y values is not always correct as you can see here:

I am trying to rotate text block that should be sticky to bottom of red rectangle always (like in Figma, but more simplier). Example if I turned rectangle by 180 degrees, text should be on the top, and it shouldn't enter the rect visual part or highly deviate from it. How can I reach that?

Maybe it's about transform-origin, but I have already broken up my head trying to dynamic set it.

There is the minimal fiddle contains rect and text elements created by svg.js (svg.js is not the part of deal, so you could do it with pure css):

https://jsfiddle.net/8h4q0fLc/1/

Here is the code:

I want to make a PacMan influenced clock. It looks now like this:
Each column is the hour (starting from 12 somehow), each dot represents 2 Minutes and each closing and opening represents the seconds.

I want that the dots dissapear if PacMan passed them so that it looks like this:
My code looks at the moment like this:

As a online graphical I used: https://www.khanacademy.org/computer-programming/spin-off-of-rectx-y-width-height-radius/4975791745220608

The rectangle coordinates:

rectangle 1: x: 180 y: 30

rectangle 2: x: 160 y: 30

What I noticed is that the render begins from a point and is increased on X axis by width and Y axis by height. So i deduced the following things: x1 and y1 are equal to rectangle coordinates (x1 and y1 being the top left corner) and x2, y2 are the bottom right corner/coordinates which are equal to the sum of square coordinates or in other words x1 and y1 and the width & height of the square.

That's the code i made:

I use extended frame to render a custom caption and window border.

I was messing around trying to figure out how to centre text in a button. This is the code.

So I am making a sorting algorithm visualiser to practice coding and to get more comfortable with using a gui in my programs. I am using javafx for the gui as opposed to swing.

My program works like this. For the gui I have a Main class and a Controller class and an fxml stylesheet which I made in scene builder. The main is basically the template that comes with all javafx projects and the Controller ofcourse has the logic behind the gui such as what happens when you click the buttons. It is also where the simulation and sorting algorithm is initialised and launched from. The pane is where the algorithm is actually visualised using rectangles of varying heights to represent a numbers magnitude. So far I have only implemented a selection sort just so I could test that the sort would work. The sort works fine and behaves as expected but it does not visualise correctly.

When I start the program and generate the data to be sorted it shows up fine as rectangles in the correct position, width and height. What the GUI looks like after I generate the numbers. Also when the algorithm finishes and the numbers are in the correct place if I call sim.update() the rectangles update to show there sorted positions correctly on the pane. However it does not show the steps between these(even if I call sim.update() at the end of a pass or comparison). It's as if I press start, the algorithm runs, and then the gui updates to show them all in order. I want to see them swapping as the algorithm works.

I have looked around for the answer and the mention of Platform.runLater() looked like it may be helpful but I didn't really understand that as I had to pass a runnable into it and had no thread to pass it.

Below I will show some code and explain how it works and where I need help.

I am currently working on a simple school project, where I am coding a Platformer. My Problem is, that the collisions between my player and my platform(s) are checked one after another, so if I check the X Collision first, the Collisions on the sides of the Platforms work completly fine, but as soon as I move, my character will be teleported to the side of the platform, because the gravity pulls me in the platform and i am moving left or right, so the program thinks I am hitting a platform from the side and sets the player rect onto the side of the platform. The same thing happens if I check for X Collision first, but with the Collisions on the sides of the platforms not working.

Is there a way of around it, so my collisions are working like in a Mario-like Game? I tried several things and removed the calculation with Friction and Acceleration for smooth movement, but nothing seems to work for me.

Here is my full code:

I am trying to make a rectangle that has a width dependant on a percentage, I got it perfectly working until I tested something with 0%.

I wanted it to disappear at 0% but it appears as I opted for rounded corners, that there is a minimum width. The same issue is apparent with lower percentage numbers, and from what I can gather, it pushes the object the opposite way if the percentage is lower than 6%, at that point the rectangle becomes a circle and can not get any smaller. Is there a workaround for this? I have my heart set on it looking the way it does, currently, just need this issue to be fixed.