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function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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KilledByAPixel

remix of d/23975 by u/tomxor

function u(t) {

for(X=t&&X+r*25,i=h=5+X%4*C(t*5)<<6;--i;x.fillRect(...t?[X-r*i/8,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*600,h,r]))r=1+S(i^X)

Oct 6 2021 6:12 PM UTC

}// 119/140

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Tiny Tree Lake 🌲 Golfed by pavel, gibson042, yonatan, tomxor, and me

Show more comments…
u/magna

If you keep golfing this down, I'm going to come and slap a default on top of it!
u/rep_movsd

C(t) also produces a passable landscape
u/tomxor

#teamwork !
u/danny@hille.dk

114 -> for(X=t&&X+r*25,i=h=5+X%2*t<<6;--i;x.fillRect(...t?[X-r*i/8,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*600,h,r]))r=1+S(i^X)
u/KilledByAPixel

that is good but we lose the curve which is the only thing holding together the composition
u/rep_movsd

for(X=t&&X+r*25,i=h=6+2*C(t*5)<<6;--i;x.fillRect(...t?[X-r*i/8,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*h,h,r]))r=1+S(i^X)
u/rep_movsd

for(X=t&&X+r*25,i=h=6+2*C(t*5)<<6;--i;x.fillRect(...t?[X-r*i/8,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*h,h,r]))r=1+S(i^X)
u/KilledByAPixel

great attempt! not sure it is possible to get smaller without cutting something. in this case the X%4 part is necessary to make the trees varying heights
u/FireFly

"boring" -1, distribute the ?: across args in the fillRect: x.fillRect(t?X-r*i/8:i*8,t?600+(r*8&3?i-h:h-i):r*600,t?i/4:h,t?2:r). Or more depending on what artistic tradeoffs you're okay with, e.g. just always setting height to r isn't terrible

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