For context, I'm trying to make a project using the html canvas in React. I am trying to replace the class components with functional components for uniformity and avoiding mixing of class and functional components. The example below should simply…
In my application, a user can load custom content such as a third-party hosted image. I have specific goals (for security): Load the image in a sandboxed iframe and "transfer" the image to the "host". This allows the "host" to…
I am creating one progress bar using Html5 Canvas, Where i need to show the progress bar based on provided value. Now user set some value and based on it the progress bar should complete the progress. I have found…
I tried developing a graph drawing web app using a canvas which includes animations for lines as this: function animateLine(x1, y1, x2, y2) { ctx.lineWidth = 5; const nrFrames = 30; const dy = y2 - y1; const dx =…
On my current project, I'm using Excalidraw, and I'm drawing a top layer of <div>s on top of the <canvas>. It all works fine, but, when it comes to scrolling through the infinite canvas, if the mouse is on top…
CONTEXT: I am trying to make a light source using ray casting, that the player can use in a randomly generated maze. The rays cast from the mouse pointer. The radial gradient that I'm using changes their colour from white…
I'm trying to render some flames however I cannot achieve a transparent canvas with putImageData(), resulting in a black canvas but well-drawn flames. I tried "globalcompositeoperation" "source-over" and "globalAlpha" but to no avail. The only issue is that the canvas…
The basic idea comes from the map of a game. According to the my code review, the map is a full-page canvas. I have no problem with drawing images on canvas. My question is how to detect map houses and…
I have prepared a simple test web page at Github (using the main.css file) for my question: In a vertical flexbox layout I am trying to use ResizeObserver to watch a parent div element with flex-grow:1 and then keep the…
i am trying to create a spinning wheel using canvas and html5. its working but my end goal is to try to point the arrow to the exact winning color. so for example if the winning color is the green…