Scratch

boisvert 4 months ago

That's where the computation starts to get hairy... The skier's movements are a combination of two: - translation forward and sideways, with the scene moving the opposite way; - rotation of the skier in the direction they are moving, which turns the whole scene correspondingly. Your work approximates the whole thing very cleverly. I'm simplifying the problem by deciding that - the skier never turns, they glide sideways, crab-like. In reality, a skier turns to face left when they glide right, and vice versa - an interesting combination! This version hasn't got the Math completely right, I kept your "change x by 3.2" trick, that's why it feels like objects in the distance are moving sideways faster than they should, and faster than objects close up (when I play it, it makes me dizzy). If you want the Math of translation in 3D, look up my bouncing ball in a room. I've scribbled the trig. for rotation of the skier's body and scene, but I haven't tried it on anything yet. Yours is an ideal example to try it on.