Dweets awesomed by u/pavel

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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nystrand

function u(t) {

for(i=c.width|=g=(o,a=n=7,b=8,z)=>--n?g(n>5?i*n:t/n,b*C(o)-a*S(o),z,a*C(o)+b*S(o)):x.lineTo(a*(z+=40)+960,b*z+540);i--;g(i&t/2));x.stroke()

Dec 27 2017 12:24 PM UTC

}// 139/140

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u/jaemiejaemie

reminds me of older windows screensavers, really nice!
u/iverjo

How was this made?

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jaemiejaemie

function u(t) {

c.width=640;x.beginPath();for(i=0;i<640;i++){a=180;for(j=1;j<t*60%60;j+=~~(t)%2+1){a+=S((i+t*60)*j/20)*50/j}x.lineTo(i,a)}x.stroke()

Dec 27 2017 10:31 AM UTC

}// 132/140

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demonstration of basic fourier curves (square/saw)

Show more comments…
u/sigveseb

Very cool!
u/joeytwiddle

Nice. DSP hero!
u/iverjo

Kudos!
u/RomanW

Excellent!
u/joeytwiddle

#math
u/katkip

#fourier

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letsbreelhere

function u(t) {

m=c.width/4
for(i=0;i<2000;i++){
x.fillStyle = R(0,100+155*S(t+i),200*C(t*i))
x.fillRect(m+m*S(t-390*i),m+m*S(t-997*i),10,10)
}

Dec 26 2017 11:32 PM UTC

}// 127/140

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u/sigveseb

the colors really make this one

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szymski

function u(t) {

y=100;c.width|=0;r=3.14159;o=(-2+(t/10%1)*24)*y;a=o/141.42;x.translate(o,950-y/r*S(a*2%r));x.rotate(a);x.fillRect(-y,-y,200,200);

Dec 26 2017 8:52 PM UTC

}// 129/140

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u/lionleaf

Welcome to dwitter! Neat one :D
u/sigveseb

ooh nice

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nystrand

function u(t) {

for(c.width|=j=0;j<40;j++)for(i=0;i<45;i++)r=j*30+C(t+j&t)*S(i+t)*(j%2&i|t),x.lineTo(C(w=t+i/7)*r+1e3,S(w)*r+r);x.fill('evenodd')

Dec 26 2017 11:24 AM UTC

}// 129/140

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u/sigveseb

very nice!
u/Xen

love it, i had to remix! #3695

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New_Core

function u(t) {

for(x.fillRect(0,0,i=b=2e3,q=1080-t);i--;x.fillRect(a*i%b+a/3*S(t*i/a/3),(i/5*t+i*50)%b%q,5,5))x.fillStyle=R(a=i*9%255,a,a)

Dec 24 2017 12:12 PM UTC

}// 123/140

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Let it snow, let it snow, let it snow....

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u/Xen

Perfect :-)
u/donbright

brilliant
u/donbright

brilliant
u/donbright

brilliant
u/ballotcan

http://i.prntscr.com/_aJutdekROaWdQKYy75nTw.… if you wonder the end
u/iverjo

Cool! Much better than my snow dweet ^^ https://www.dwitter.net/d/338
u/sigveseb

gotta love how the snow accumulates!
u/alien

no way... the snow is accumulating...
u/darrencearnaigh

Lovely seasonal golf.
u/snydej

Wow! This is excellent!
u/iverjo

#snow
u/vain

excellent snowflakes movements

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BriSeven

function u(t) {

if(!t)d=[];c.width=1920;X=Y=0; for(i=0;i<1e4;i++) D=(d[i]||1),d[i]=D+S(D*t*i)/9, x.fillRect(X+=C(d[i])*5, Y+=S(d[i])*5, 5, 5)

Nov 23 2017 8:16 AM UTC

}// 125/140

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A mutating (pseudo)random walk.

u/magna

Awesome!
u/donbright

brilliant

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cantelope

function u(t) {

for(x.globalAlpha=.07,x.fillRect(0,0,i=2140,i);i--;)x.clearRect(i*25%2e3+S(p=i*3+(k=C(t*2+i*9)))*(v=S(i*171+t)*50),i%1080+C(p)*v,4,4)

Nov 8 2017 6:19 AM UTC

}// 133/140

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colorized version: https://codegolf.tk/a/232

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cantelope

function u(t) {

r=q=>x[q?"lineTo":"moveTo"](w+(X-21)/Z*w,1.5/Z*w);for(w=500,i=c.width=1e3;i--;r(Z++),r(X--))X=(i+t)%40,Z=1+(i/40|0)-t*5%1,r();x.stroke()

Nov 6 2017 7:27 AM UTC

}// 136/140

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u/mmastrac

so cool
u/joeytwiddle

retro and futuristic at the same time
u/jdspugh

Very cool

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mmastrac

remix of d/3356 by u/mmastrac

function u(t) {

t?c.width|=0:M=[...Array(3e4)],M=M.map((e,i)=>[n=3,e][[1,w=212,++w,w+1].map(e=>n-=M[i+e]+M[i-e]),n]?!x.fillRect(i%w*9,i/w*9,7,7):!t&i%w)

Oct 24 2017 10:50 PM UTC

}// 136/140

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Last game of life, I swear...

u/alien

noooooo!! plez moooarrr GOL!!!
u/joeytwiddle

#gameoflife

dwitter.net | pavel (32391)