Christian Heilmann

Talking about the fun I have with HTML canvas at “Programmed in Pencil” – Video, Slides and code examples

Thursday, June 25th, 2020 at 3:01 pm

Yesterday I presented Images, pixels, canvas, tigers and bears… at an online meetup called Programmed in Pencil run by RVU.

I have to admit I misread the title of the event and thought it would be predominantly about creative coding, which is why I wrote this talk and not one about software planning or running teams. But there is an upside: I love working with canvas and showing people how you can use it to turn an image into something you can manipulate, convert and change with plain JavaScript.

The recording of the Zoom meeting is available on YouTube :

The slides are on noti.st :

View Images, pixels, canvas, tigers and bears… on Notist.

And as I had some time today I put together all the code examples I showed, documented them heavily and put them on GitHub. Click the image below to go and play.

demo page of how to count the colours in an image

You can get the source of all of them or play with the interactive version (that also shows the source inline).

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Newsletter

Check out the Dev Digest Newsletter I write every week for WeAreDevelopers. Latest issues:

160: Graphs and RAGs explained and VS Code extension hacks Graphs and RAG explained, how AI is reshaping UI and work, how to efficiently use Cursor, VS Code extensions security issues.
159: AI pipelines, 10x faster TypeScript, How to interview How to use LLMs to help you write code and how much electricity does that use? Is your API secure? 10x faster TypeScript thanks to Go!
158: 🕹️ Super Mario AI 🔑 API keys in LLMs 🤙🏾 Vibe Coding Why is AI playing Super Mario? How is hallucinating the least of our worries and what are rules for developing Safety Critical Code?
157: CUDA in Python, Gemini Code Assist and back-dooring LLMs We met with a CUDA expert from NVIDIA about the future of hardware, we look at how AI fails and how to play pong on 140 browser tabs.
156: Enterprise dead, all about Bluesky and React moves on! Learn about Bluesky as a platform, how to build a React App and how to speed up SQL. And play an impossible game in the browser.

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