Instant colour fill with HTML Canvas (via) Shane O'Sullivan describes how to implement instant colour fill using HTML Canvas and some really clever tricks with Web Workers. A new technique to me is passing a canvas.getImageData()
object to a Web Worker via worker.postMessage({action: "process", buffer: imageData.data.buffer}, [imageData.data.buffer])
where that second argument is a list of objects to "transfer ownership of" - then the worker can create a new ImageData()
, populate it and transfer ownership of that back to the parent window.
Recent articles
- AI assisted search-based research actually works now - 21st April 2025
- Maybe Meta's Llama claims to be open source because of the EU AI act - 19th April 2025
- Image segmentation using Gemini 2.5 - 18th April 2025