148. A code library for 3D rotation and flying
After a long time wrestling with basic flying, Andrew Stacey and I have come up with a library that helps you do 3D rotations and flying. The question is how to share and explain it.
For the moment, I’ve set up a code project that has the library (several tabs of code) plus a set of demos. It’s a “step by step” project where the demos start out simple and become more advanced, from left to right. There is a parameter that lets you choose which demo you want to see (push down the output area at left, to see it at the bottom of the other parameters).
NB If you get crazy results when flipping between demos, just restart, it should go back to your latest choice and work OK.
(Note it needs one image downloaded for the sky – see the Notes tab)
I think you’ll agree (if you have enough experience to try it) the code you need to write is pretty small and not scary. But whatever you do, don’t look in the Quaternion tab. There be dragons in there.
coolcodea 
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