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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donbright

remix of d/1232 by u/iverjo

function u(t) {

a=2e3;c.width=a;for(i=2*a;i--;)p=S(t)*i/a+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(a/2+99*(S(p)+S(t)),i/4,99*d,1/(d+1)),x.fillStyle=R(i/9,d*a/8)

Feb 25 2017 1:54 AM UTC

}// 140/140

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u/iverjo

Nice :) Better colors than mine
u/iverjo

By saving golfing 2 characters I managed to make the twister bigger:
u/iverjo

c.width=a=2e3;for(i=2*a;i--;)p=S(t)*i/a+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(a/2+199*(S(p)+S(t)),i/4,199*d,1/(d+1)),x.fillStyle=R(i/9,d*a/8)
u/iverjo

A little more movement: c.width=a=2e3;for(i=2*a;i--;)d=C(p=S(t)*i/a+i%4/.637)-S(p),d>0&&x.fillRect(a/2+199*S(p)+399*C(t),i/4,199*d,1/(d+1)),x.fillStyle=R(i/9,d*a/8)
u/donbright

wow that is awesome!!! i really do miss how yours spins all the way around.
u/donbright

#twister

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hamptonio

remix of d/1203 by u/vegolasse

function u(t) {

q=43;function a(r){x.arc(q+S(r/3)*400,q+S(r/2)*730,i,0,6.283);x.closePath()}c.width=q*q;for(i=0;i<q*q;i+=9){a(t);a(S(t))};x.fill("evenodd")

Feb 25 2017 1:10 AM UTC

}// 140/140

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seems like that evenodd method could do some other cool shit

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jprctr

function u(t) {

d=24
for(i=1;i<81;i++){
for(j=1;j<46;j++){
v=125+C(t+(j-23)*+(i-40)*S(t))*125
x.fillStyle=R(v,v,v,0.1) 
x.fillRect(i*d,j*d,d,d);
}
}

Feb 24 2017 9:21 PM UTC

}// 133/140

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u/Uruwi

Reminds me of wavefunction collapse.
u/rhys5584

nice
u/rhys5584

nice
u/katkip

#moire

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DOsinga

function u(t) {

c.width=1920;
for(i=0;i<100;i+=0.1)
x.fillRect(-200+i*50+S(t + i*0.9)*200, 400+C(t + i*1.1)*300, 20, 20) /* draw 50x200 rects */

Feb 23 2017 5:00 PM UTC

}// 128/140

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Niklas

function u(t) {

l=960,k=540,j=l/2,h=k/2,q=999,c.width|=0;for(i=0;i<q;i++)a=i*2*Math.PI/q+t,v=t/99*i,x.lineTo(C(a)*(j-C(v)*j)+l,S(a)*(h-S(v)*h)+k);x.stroke()

Feb 23 2017 2:45 PM UTC

}// 140/140

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u/Woodmouth

Try waiting for a really long time, like, 5 min, it gets cool
u/joeytwiddle

Good one

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xem

function u(t) {

x.clearRect(0,0,9999,9999);x.font="900px arial";x.fillText(String.fromCodePoint(0x1f300+~~(t*10)),400,800)

Feb 20 2017 8:48 PM UTC

}// 106/140

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More info and demos: https://github.com/xem/miniUnicode

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xem

remix of d/645 by u/xem

function u(t) {

for(i=j=0;i<
118;j+={0:17,3:11,11:11,55:54,87:54,69:-68,101:-68}[i++]|1)x.fillStyle=R(i,i+99,i*3,1),x.fillRect(j%18*99,~~(j/18)*99,90,90)

Feb 17 2017 10:36 PM UTC

}// 137/140

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u/lionleaf

Awesome periodic table!
u/iverjo

wow, impressive!
u/xem

thanks! More info on http://codegolf.github.io/period1k/
u/KilledByAPixel

Nice! #periodic #periodictable

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iverjo

function u(t) {

c.width=960;for(i=26;i--;)d=(i+3*t)%26,I=C(d*.7)>0?1:0,x.beginPath(),x.arc(480,270,I?(d*22):(600-d*22),0,6.4),x.lineWidth=12,x.stroke()

Jan 28 2017 9:13 PM UTC

}// 135/140

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Optical illusion: Go fullscreen and stare at the center for 15-30 seconds. Then look down at your keyboard. Notice anything unusual?

u/iverjo

129 characters: c.width=960;for(i=26;i--;)d=(i+3*t)%26,I=C(d*.7)>0?1:0,x.beginPath(),x.arc(480,270,I?d*22:600-d*22,0,7),x.lineWidth=12,x.stroke()
u/iverjo

#opticalillusion
u/ximavus

my eyes aren't eyeing lol

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New_Core

remix of d/590 by u/New_Core

function u(t) {

c.width=2e3;for(b=i=200;i--;)i>180?a=10*S(t*4+i*9):a=0,x.fillRect(1e3+2*(b-i)*C(i-t)*S(i-t)+100*S(t+i*0.03-a*.08)+b*S(t/2),i*5+a,5,5)

Jan 14 2017 12:28 PM UTC

}// 133/140

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A tornado ;)

u/sigveseb

nice
u/sigveseb

nice
u/sigveseb

btw New_Core, the next hour we're having a dweet-off at a physical location! so expect many incoming dweets :D you add dweets too, and we can include it in the dweet-off :D
u/13thptr

#tornado

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BriSeven

remix of d/291 by u/iverjo

function u(t) {

t=t%4;if(t<.1)r=X=Y=0,W=c.width=960,H=540;for(i=W*4;i--;)x.fillRect(X=(X+S(r+=C(t*i*r))%W+W)%W,Y=(Y+C(r)%H+H)%H,A=5/(1+t*9),A)

Jan 1 2017 12:01 AM UTC

}// 126/140

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u/donbright

the gray scale is what makes this awesome