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2. How do I hand draw on canvas with JavaScript? - Stack Overflow

   stackoverflow.com/questions/22891827

   In fact you can, each time you draw a path a 'path:created' event occurs, the following: canvas.on ('path:created', function (path) { JSON_path = JSON.stringify (path.path.toJSON ()) }); will retrieve the JSON string of the last drawn path, when this string arrives to another canvas, which already contains other paths, all you have to do is to ...

3. html - Draw on HTML5 Canvas using a mouse - Stack Overflow

   stackoverflow.com/questions/2368784

   48. Here's the most straightforward way to create a drawing application with canvas: Attach a mousedown, mousemove, and mouseup event listener to the canvas DOM. on mousedown, get the mouse coordinates, and use the moveTo() method to position your drawing cursor and the beginPath() method to begin a new drawing path.

4. How to "paint" on an image on Canvas? - Stack Overflow

   stackoverflow.com/questions/40907035

   Use compositing mode "destination-over" to draw behind existing content (from image, vectors etc.). It's necessary that the existing content provide an alpha channel or composition won't work. If there is no alpha-channel you can convert inverse luma / matte (the white) to alpha channel. ctx.fillRect(e.clientX - 10, e.clientY - 10, 20, 20);

5. Implementing smooth sketching and drawing on the <canvas> element

   stackoverflow.com/questions/10567287

   It's hard to say what kind of brush exactly you need but there is many JS libraries that has already implement brush technology. For example did you look at this libraries? Processing.js; HTML5-Canvas-Brush-Sketch (demo and article how it works) Laso in web you can find many brushes implemented in Mr. Doob Harmony project.

6. Undo/Redo for paint program using Canvas - Stack Overflow

   stackoverflow.com/questions/17150610

   var lastPoint=points.pop(); // add the "undone" point to a separate redo array. redoStack.unshift(lastPoint); // redraw all the remaining points. redrawAll(); Redo is logically more tricky. The simplest Redo is when the user can only redo immediately after an undo. Save each “undo” point in your separate “redo” array.

7. Creating simple paint app using Html and javascript

   stackoverflow.com/questions/51580910

   Paint app with canvas. 0. How to create a painting application using PHP and HTML 5? 2. HTML5 Javascript ...

8. How to fix "Loading the Google Maps JavaScript API without a...

   stackoverflow.com/questions/75179573

   I actually created a noop function so I could keep track of when it was called. function gmNoop() { console.log('GMap Callback') }

9. Is it possible to implement a Paint Bucket using Konva.js?

   stackoverflow.com/questions/56232377

   In short, what this solution does is that when the stage is mounted, the paint bucket is setup targeting the canvas generated by konva. The pixels around the one clicked are colored using a cell automaton algorithm, as per Antoni's suggestion. Okay, but the downside of this approach is that whenever you’re drawing a shape after paint bucket ...

10. javascript - Paint on an object using Three.js - Stack Overflow

    stackoverflow.com/questions/41077024

    Dec 10, 2016 at 15:28. 1. Ctrl + U will show you the source code of the page from your link. – prisoner849. Dec 10, 2016 at 16:26. 1. first thing you have to care about is projecting 2d mouse coords to 3d world space and determining wether the click was on the model (three.js raytracer would help here) – ampawd.

11. Paint an image without removing it on html5 canvas

    stackoverflow.com/questions/29241548

    4. A very different solution comes to mind now that canvas has come to stage two: more blending modes, which simplifies the whole process: Draw the image, make sure background is white, lines black ("dah" perhaps, but important) Change composite (blending) mode to multiply - note: does not work yet in IE (incl. v.11).