Top dweets of all time

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: #Food

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Xen

remix of d/12413 by u/Xen

function u(t) {

for(i=2e3;i--;)x.fillRect(i+S(C(t/3)*i),t*99,1,1)

Feb 18 2019 6:05 PM UTC

}// 49/140

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u/DataMeta

This one is smooth. Surely there is an even more golfed moire possible
u/geb

#background

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katkip

function u(t) {

t||(a=b=0);for(i=99;i--;)a+=C(b-t)/69,b+=S(a*2)/69,x.fillRect(40+a*21,840+b*21,5,5)

Feb 15 2019 12:39 PM UTC

}// 83/140

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A curve, #curve

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rodrigo.siqueira

remix of d/12336 by u/pavel

function u(t) {

for(a=b=i=800;i--;x.fillRect(270*(t&7)+99*a,1e3-99*b,1,1))r=Math.random(),[a,b]=r<.86?[.8*a,.9*b+.9]:r<.93?[-b/3,a+b/4]:[b/3,a/3+b/3+1]

Feb 14 2019 6:53 PM UTC

}// 135/140

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Forest of trees. Barnsley #fern is an example of an Iterated Function System (IFS) to create a #fractal.

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robbyg

function u(t) {

f=(X,Y,w)=>{var W=w/2,h=X-W,v=Y-W
x.rect(h,v,w,w)
if(W>9)f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)}
t||f(960,540,540)
x.fill('evenodd')

Feb 11 2019 1:07 AM UTC

}// 137/140

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#recursive squares

u/robbyg

Thanks u/katkip for the recursive examples
u/katkip

Beautiful
u/robbyg

133: f=(X,Y,w,W,h,v)=>(W=w/2)>4&&(x.rect(h=X-W,v=Y-W,w,w),f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)) t||f(960,z=540,z) x.fill('evenodd')

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username

remix of d/12129 by u/rodrigo.siqueira

function u(t) {

X=Y=0
for(c.width|=i=1e3;i--;X=X*C(2*(t+Y))+Y/4,Y=C(2*X+Y+t/3)-S(i+X+t)/3)x.fillRect(1e3+X*742,521+Y*338,5,5)

Feb 8 2019 11:27 PM UTC

}// 109/140

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#golfed

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katkip

function u(t) {

s=200;x.fillRect(t*90,540+S(t)*s+S(t*2)*s/2+S(t*3)*s/3+S(t*4)*s/4+S(t*5)*s/5+S(t*6)*s/6+S(t*7)*s/7+S(t*8)*s/8+S(t*9)*s/9+S(t*10)*s/10,10,20)

Feb 6 2019 10:28 AM UTC

}// 140/140

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#fourier transform

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katkip

remix of d/12197 by u/katkip

function u(t) {

c.width*=1
for(i=9;i--;)for(j=50;j--;)for(k=20;k--;)x.fillRect(400+i*100+S(t*5)*300+j+S(k+t)*S(t*5)*99,400+C(j+i*22)*S(t*5)*29+k*10,2,15)

Feb 6 2019 9:07 AM UTC

}// 137/140

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#default but shuttered

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robbyg

remix of d/12170 by u/robbyg

function u(t) {

c.width|=0
for(i=9;i--;)for(v=200;v--;)x.fillStyle=`hsl(${i*40+v+t*40},50%,50%`,x.fillRect(520+S(t+v/50)*400+i*100,440+v,50*v/150,1)

Feb 5 2019 3:47 PM UTC

}// 132/140

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Rainbow weaving perspective #default that is hopefully not derivative. :D

u/DataMeta

Smoooth
u/DataMeta

#colors

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katkip

function u(t) {

r=Math.random;for(k=999;k--;)X=r()*1920,Y=r()*1080,x.fillStyle=`hsl(${X+Y*C(Y/250+t)} 99%${C(Y/99+t*3)*X/25+50}%)`,x.fillRect(X,Y,20,20)

Feb 5 2019 10:21 AM UTC

}// 136/140

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#color

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Xen

function u(t) {

x.font="50px'"
t?x.fillText("3K",14+S(t),39+C(t)):c.width=99
x.fillStyle=`hsla(${t*t},90%,30%,.01)`

Feb 4 2019 12:47 AM UTC

}// 99/140

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3000 Awesomes, thank you everyone!

u/DataMeta

Reminds me of VHS box art