Dweets awesomed by u/theonewhostands

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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ciaccodavide

function u(t) {

for(w=1920,h=1080,i=3e4;i--;)r=Math.random,X=r(),Y=r(),
x.fillRect(w*X,h*Y,Math.hypot(S(.5-X)*1.5, S(.5-Y)*2),t<7)

Oct 8 2021 11:58 AM UTC

}// 114/140

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Elliptical galaxy (filling the void)

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vgel

remix of d/24039 by u/vgel

function u(t) {

for(c.width|=i=0;i<4e4;i++)x.fillRect(n=u[i]??=i%2e2*10,m=u[++i]??=i/9,5,5,q=.01,d=S(q*n)+S(q*m),u[i-1]-=d*C(q*n)*S(t),u[i]-=d*C(q*m)*S(t))

Oct 8 2021 12:03 AM UTC

}// 139/140

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oscillations

u/vgel

realized the p array was unnecessary which gave me enough space for reversing the flow

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KilledByAPixel

remix of d/24008 by u/KilledByAPixel

function u(t) {

for(c.width|=j=9;j--;)for(i=h=300+C(j)*99|0;--i;x.fillRect(500+99*j+S(t)*300-r*i/8,600+(i%5?i-h:h-i),i/4,2))r=1+S(i*i+j)+S(i%5?0:t+i)-C(t)

Oct 7 2021 5:10 PM UTC

}// 138/140

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Treefault 🌲 #default

u/danny@hille.dk

⚓Way hay and up she rises⚓
u/magna

Ahahah. Thank you for this!
u/magna

#meta
u/KilledByAPixel

you inspired the idea!
u/vain

amazing

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mxfh

remix of d/23817 by u/pavel

function u(t) {

for(i=420;r=--i>>1;i&2||x.beginPath(x.fill()))x.fillStyle=`hsl(177,42%,${90-3*r}%`,x.arc(960,580,20*r,a=(i*9+(~r%2)*C(t-r/9))/.9549,a)

Oct 7 2021 4:38 PM UTC

}// 134/140

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Looks like iOS safari closes arc in a weird way. Adding some offset to the end fixes this: … a+0.001)

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theonewhostands

remix of d/24013 by u/theonewhostands

function u(t) {

for(i=c.width|=0;i--;)x.arc(960-S(i/40-t*1),540+C(i/40-t*1)*40,i,6+S(t*1)*9,9-S(i/49-t*3)*9)
x.stroke()

Oct 6 2021 9:28 PM UTC

}// 103/140

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theonewhostands

remix of d/24012 by u/theonewhostands

function u(t) {

for(i=c.width|=0;i--;)x.arc(960-S(i/40-t*1),540+C(i/40-t*1)*400,i,0,9-S(i/49-t*20)*200)
x.stroke()

Oct 6 2021 9:25 PM UTC

}// 98/140

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theonewhostands

remix of d/23998 by u/KilledByAPixel

function u(t) {

for(i=c.width|=0;i--;)x.arc(960-S(i/40-t*10),540+C(i/40-t*5)*10,i,0,9)
x.stroke()

Oct 6 2021 9:22 PM UTC

}// 81/140

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KilledByAPixel

remix of d/24009 by u/BackendForth

function u(t) {

for(c.width|=i=0;i<3e3;i+=.1)x.arc(960,540,i**.5*21,a=i+t,a)
x.stroke()

Oct 6 2021 8:54 PM UTC

}// 71/140

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Spiral Makes Circle Moiré

u/magna

Awesome! Also, ouch my eyes.
u/Chippackage

WOW!

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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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