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EviL glenz conversation

Platform: tic80

Party prod :D

I ran into EviL at the demo-party and was naively unaware of what a glenz effect is and ended up wanting to try get it on Tic80. The challenge with Tic80 is that while Tic80 has a function to draw a triangle, there is no alpha. I tried a few approaches, settled on this one. Another thing, rotating in arbitrary axises takes a lot of space, then code golfing it I changed to quaternion and also got some cancellations in the math so the projection came out almost for free in terms of size.

Tools:
tic80
packer https://github.com/vsariola/pakettic


References:
http://www.sizecoding.org/wiki/TIC-80
https://tic80.com

Greets to blackis, zoi, havocplague, everyone at Inercia 2005#18!

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