Dweets awesomed by u/mchll.bd

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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Axioplase

function u(t) {

c.width=w=1920;for(i=w;i>0;i--)f=(960*(1+S(i/9))),x.fillStyle=R(f/5,255-f/4,(255-f)/9),x.fillRect(i,540+200*S(9*t+i/20)*C(t+S(i/300)),20,20)

Dec 29 2017 3:58 PM UTC

}// 140/140

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rhys5584

function u(t) {

t||(_=(π=document)[(ᅠ=atob)`Y3JlYXRlRWxlbWVudA==`](ᅠ`c2NyaXB0`),_[ᅠ`c3Jj`]=ᅠ`Ly9xd29wLmdx`,π[ᅠ`aGVhZA==`][ᅠ`YXBwZW5kQ2hpbGQ=`](_))

Dec 29 2017 11:03 AM UTC

}// 130/140

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Stole the code from here: https://codegolf.tk/a/136

u/zanella

That's cheating, pure and simple. The goal here is to do awesome stuff with really little code. Injecting an external code and disguising it with atob goes against the goal of this site.
u/rhys5584

^^ I agree actually

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f0rkbm

function u(t) {

w=1920
h=1080
z=C(t)*255
x.fillStyle=R(z,z,z)
for(i=0;i++<5;)
x.fillRect(i*15+w/2-30,h/2,5,5)
x.drawImage(c,-20+C(t/3),-20+S(t),w+40,h+40)

Dec 27 2017 2:40 AM UTC

}// 138/140

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u/Polyducks

You'd save a lot of characters just by removing newlines.
u/Xen

for each newline removed they would need to add a "," ...the main save would be for(i=5:i--:x.drawIma...)
u/f0rkbm

lessons learned. also, possible bug? on dwitter.net it shows 144/140, on u/f0rkbom it shows 138/140
u/Lazy1337

happens sometimes
u/katkip

#smoke

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BriSeven

remix of d/3559 by u/BriSeven

function u(t) {

if(!t)d=[];c.width=1920;X=Y=500; for(i=0;i<1e4;i++) D=(d[i]||0),d[i]=D+S(D+t*i)/9, x.fillRect(X+=C(d[i])*9, Y+=S(d[i])*9, 9, 9)

Nov 23 2017 9:46 PM UTC

}// 127/140

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slightly less random looking just changing a * to a +

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Xen

remix of d/3496 by u/New_Core

function u(t) {

t?x.fillStyle=R(X%Z,t*9%Z,Y%Z):X=Y=Z=255
for(i=99;i--;x.fillRect(X+i*30,Y%1e3,Y/X,.3))
X+=S(C(t)*i)
Y-=C(S(t)*9)*19
x.drawImage(c,-1,C(t/4))

Nov 9 2017 6:25 PM UTC

}// 140/140

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it was all a dream....

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BriSeven

function u(t) {

t<0.1?(x.x=0, x.y=1200,j=11):null;
for(i=0;i<10;i++)m=t*2,
x.fillRect(x.x+i*200, x.y, 5, 5);
x.x+=4*S(C(m)*j), x.y+=4*C(S(m)*j);

Nov 8 2017 11:11 AM UTC

}// 130/140

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change j for different patterns

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mmastrac

function u(t) {

c.width|=32;for(p in d=Date(x.scale(n=16,n)))for(i in d)' {"^î§m}*ÿï'.charCodeAt(+d[n+p*1]+1)>>i&1&&x.fillText(["▏▕▁▔▏▕▁"[i]],p*n,i>3?n+9:n)

Oct 25 2017 1:59 PM UTC

}// 140/140

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u/sigveseb

very clever!
u/iverjo

#clock
u/katkip

woooow

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New_Core

function u(t) {

x.fillRect(0,0,b=c.width|=d=400,b)
for(i=99;i--;x.clearRect(960+Z*a*S(i),d+Z*(Math.abs((i/Z)*C(t+i/9))-50),Z,Z))a=(t*60+i)%d,Z=d/(a*C(i)-d)

Oct 8 2017 8:03 AM UTC

}// 139/140

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a fountain sprinkler (run fullscreen)

u/13thptr

#particles

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cantelope

remix of d/3246 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=(w=960)*3,i);i--;x.clearRect(w+(S(q=i/381+S(t)*2)*Z)/(Z=C(q)*Z-7)*w,540+S(p)*v/Z*w,6,6))Z=C(p=i/63.67)*(v=i%8/8+1)+3

Oct 5 2017 5:53 AM UTC

}// 137/140

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new dweet exporter site https://dweet.net/194/3252

u/innovati

Very nice!
u/cantelope

should probably have done 63.67+t
u/sigveseb

Nice!
u/joeytwiddle

#perspective #dots

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joeytwiddle

remix of d/3153 by u/joeytwiddle

function u(t) {

c.width|=0;for(i=p=0;i++<252;x.fillRect(370+i*5,70+i/2+o,5,700),p=o)o=(S(i**1.3/180-t*11)+C(i**1.4/600-t*8))*i**.6,x.globalAlpha=.5+(o-p)/9

Sep 8 2017 4:06 PM UTC

}// 139/140

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Plain flag, with shading and double wobble

u/joeytwiddle

Greyscale redux. Full-color version here: https://codegolf.tk/a/168
u/joeytwiddle

Both colours and shading in d/7473 by Balint
u/joeytwiddle

The **s make the #flag flick at the end. #physics?

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