I'm fairly new to HTML/CSS/JS programming and could use some help. I am trying to reverse engineer a Pacman clone originally built with HTML5/CSS3/JQuery. I have been making headway in getting what I needed to get done: I've added a…
I am creating a canvas based tool using FabricJS within a React App. I am using the latest NPM Package 6.4.3 and I am struggling to add an image to the canvas. Very recently they have switched to TypeScript and…
I have a Blazor server application. On one of my pages I have the standard setup: MyPage.razor: @page "/mypage" <div> <!-- stuff here ... --> </div> @code { // stuff here ... } On this page, I am looping through…
Consider the following piece of code (test it yourself): function draw() { var canvas = document.getElementById('canvas'); var ctx = canvas.getContext('2d'); ctx.beginPath(); ctx.arc(75, 75, 50, 0, Math.PI * 2, true); // Outer circle ctx.stroke(); ctx.moveTo(75, 75); ctx.save(); ctx.setLineDash([3, 3]); ctx.lineTo(90, 90);…
I am curious on the curious behaviour of js, in particular with this method .strokeStyle which usually is used to change the color of a stroke on a HTML canvas. It seems to me quite peculiar, for exmaple if I…
I have created pulse animation using html canvas. There is two rectangles. Rectangle's positions is updated dynamically. The smaller rectangle has pulse animation. I have problem calculate it's center position value. Without scaling I get correct position. But when scaling…
I want to use MS paint style line tool to draw straight line using UI on html canvas element using JS. The issue is that line preview must be visible on canvas as mouse is being dragged after click at…
I have an HTML page with a canvas in the body defined as so: <!DOCTYPE html> <html> <head> <script defer src="./js/canvas.js"></script> <link rel="stylesheet" href="./css/canvas.css"> </head> <body> <canvas id="pinboard"></canvas> </body> </html> In canvas.js I've written: var canvas = document.getElementById("pinboard"); canvas.addEventListener("mousedown", function…
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…