Dweets awesomed by u/jelmo

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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Current theme challenge: #Opposites

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rodrigo.siqueira

remix of d/23284 by u/erin

function u(t) {

c.style.filter=`blur(2px)contrast(3)invert(`
for(i=c.width|=f=g=>i*g(i/5+t)/5+440*C(i)*g(i/5-t);i--;)x.lineTo(960+f(C),540+f(S))
x.stroke()

Jul 5 2021 2:32 AM UTC

}// 139/140

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Pulsating star and pentagon

u/jelmo

I like this

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rodrigo.siqueira

remix of d/23128 by u/Tekmap

function u(t) {

for(j=99;j--;)for(X=j%2?X:A=Math.random()-1,Y=-1,i=700;i--;x.fillRect(-1600*X,Y*530+999,.1,t<3))X=X*X-Y*X+(Y+=2*X*Y-1,A)

Jun 17 2021 1:22 PM UTC

}// 120/140

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Chaotic structure #chaos #attractor

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New_Core

function u(t) {

for(c.width|=j=15,x.translate(960,540);j--;x.rotate(t/9+j))for(i=20;i--;x.fillRect(i*9-80,20*S(t*(j%5+3)-i/8)-a/2+99+50*j,9,a))a=40*S(i/5)

Jun 3 2021 2:51 PM UTC

}// 138/140

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fishes

u/rep_movsd

Very nice!
u/aleamb

#organic #fish #nature
u/joeytwiddle

That's a beauty
u/jelmo

I like
u/384.cz

Gréäť °gřàmmäř

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initramfs

remix of d/18146 by u/joeytwiddle

function u(t) {

for(c.width|=j=99+t|0;j-->t;)for(g=(j-t)*120,i=W=90;i--;)x.fillRect(i?g+i*i/70*S(1e3/i-t*8+j**3):g,500+!!i*i*8,-W-1*S(j*j),i?6:-400-W*S(j))

May 31 2021 4:15 AM UTC

}// 139/140

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u/aleamb

#water #landscape

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KilledByAPixel

function u(t) {

for(w=c.width&=i=10368;i--;S[i]=S[i]+C[i]/4||0)x.fillRect(i%w,i/w,1,C[i]=T(i*i*t)>1e5?9:C[i]*.9-(4*S[i]-S[i-1]-S[i+1]-S[i-w]-S[i+w])/5||0)

May 30 2021 9:39 PM UTC

}// 138/140

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Water Ripples 💧

u/aleamb

#water
u/KilledByAPixel

more golfed... for(w=c.width&=i=10368,R=R-1?1:w;i--;S[i]=S[i]+C[i]/4||0)x.fillRect(i%w,i/w,1,C[i]=T(i*t)>5e4?9:C[i]*.9-(2*S[i]-S[i-R]-S[i+R])/3||0)
u/tomxor

#automata (von-neuman outer-totalistic r=1)
u/KilledByAPixel

another byte saved... for(w=c.width&=i=10368,R=R-1?1:w;i--;S[i]=S[i]+v/4||0)x.fillRect(i%w,i/w,1,v=C[i]=T(i*t)>5e4?9:C[i]*.9-(2*S[i]-S[i-R]-S[i+R])/3||0)
u/vain

cool 2d water drop fx

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