Fluid curves with Smooth.js and HTML5 canvas A demo using Smooth.js and HTML5 canvas to draw a curve through a set of points. See this blog post for further discussion. JavaScript library to draw smooth curves and straight lines with your mouse, finger or any pointing device. August 17, 2022 -PortrayCanvas is a JavaScript drawing app that allows the user to draw smooth points and lines on a canvas element. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. Drawing uber smooth lines with quadraticCurveTo. Article: http://codetheory.in/html5-canvas-drawing-lines-with-smooth-edges/ February 18, 2025 -Copy contents from the Temporary Canvas to the original one using drawImage. Clear the temporary canvas using clearRect. Empty the array. You might be wondering why did we use a temporary canvas ? On experimenting quite a bit and with the help of that SO answer, I figured out that for a smooth drawing, it is important to store all sample points inside an array and then draw it. September 25, 2025 -The first image is drawn at its natural size, the second is scaled to 3X and drawn with image smoothing enabled, and the third is scaled to 3X but drawn with image smoothing disabled. ... const canvas = document.getElementById("canvas"); const ctx = canvas.getContext("2d"); ctx.font = 16px sans-serif"; ctx.textAlign = center"; const img = new Image(); img.src = /shared-assets/images/examples/big-star.png"; img.onload = () => { const w = img.width, h = img.height; ctx.fillText("Source", w 0.5, 20); ctx.drawImage(img, 0, 24, w, h); ctx.fillText("Smoothing = TRUE", w 2.5, 20); ctx.imageSmoothingEnabled = true; ctx.drawImage(img, w, 24, w 3, h 3); ctx.fillText("Smoothing = FALSE", w 5.5, 20); ctx.imageSmoothingEnabled = false; ctx.drawImage(img, w 4, 24, w 3, h 3); }; Signature Padis a JavaScript library for drawing smooth signatures. It's HTML5 canvas based and uses variable width Bézier curve interpolation based on Smoother Signatures post by Square. I started experimenting with different ... — edge smoothing, bezier curves, ink and chalk and pen and stamp and patterns — oh my. Turns out there's not much written about this on the web. Not in the context of Javascript and , anyway. The best you can do is look at the demos source code to get a glimpse of what's going on. So I've got an idea to create sort of an interactive tutorial. Taking you from the very basics (drawing a primitive ... October 22, 2022 -const points = [{ x: 1, y: 1 }, { x: 20, y: 30 }, { x: 30, y: 40 }, { x: 40, y: 20 }, { x: 50, y: 60 }]const canvas = document.querySelector('canvas') const ctx = canvas.getContext("2d") ctx.beginPath(); ctx.moveTo(points[0].x, points[0].y);for (const point of points) { const xMid = (point.x + point.x) / 2; const yMid = (point.y + point.y) / 2; const cpX1 = (xMid + point.x) / 2; const cpX2 = (xMid + point.x) / 2; ctx.quadraticCurveTo(cpX1, point.y, xMid, yMid); ctx.quadraticCurveTo(cpX2, point.y, point.x, point.y); } ctx.stroke(); ... New JavaScript and Web Development content every day.
