GitHub - devforth/painterro: Painterro - JavaScript painting plugin
live demo | npm | GitHub JavaScript painting plugin which allows editing images in a browser. Can be easily integrated into any website or webapp by calling simple initialization code. 🙏🙏🙏 Scream for help to Ukraine 🇺🇦 24 February 2022, Russia started bombing cities with peacefully civilized population in whole Ukraine. And has been doing it up to this day. Breaking all laws of war. Their bom
Canvasを部分的に任意の色で塗りつぶす（消しゴムみたいの） - Qiita
Canvasを透明色で塗りつぶすの応用。 Canvasクラスのdraw系メソッドに渡すPaintパラメーターに、上記と同じようにPorterDuffルールを設定してあげる。 例：透明な四角を描画する。 Canvas canvas = getHolder.lockCanvas(); Paint paint = new Paint(); paint.setColor(Color.TRANSPARENT); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); canvas.drawRect(0, 0, 30, 30, paint); getHolder().unlockCanvasAndPost(canvas); Register as a new user and use Qiita more convenient
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Dragging Shapes using mouse after creating them with html5 canvas
Show rectangle on canvas when mouse move
Paper.js
GitHub - embiem/react-canvas-draw: React Component for drawing in canvas
GitHub - 1j01/jspaint: 🎨 Classic MS Paint, ＲＥＶＩＶＥＤ + ✨Extras
