Simon Willison’s Weblog

gefingerpoken. Michal Migurski shows how to implement the algorithm for two-finger deforming drag using affine transformation matrices in Flash.

Posted 24th September 2007 at 8:50 am

Recent articles

LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025
Qwen3-4B-Thinking: "This is art - pelicans don't ride bikes!" - 10th August 2025
My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025

affinetransformations 1 algorithm 2 flash 69 matrices 1 michal-migurski 15 multitouch 2

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