Dweets awesomed by u/joeytwiddle

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: #Food

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dongwoo

function u(t) {

c.width|=0
b=(a)=>x.rotate(a)
b(t*.1)
for(i=3000;i;){b(i*.01);x.fillStyle="hsl("+360*((i/900-t)%1)+",100%,50%)";x.fillRect(0,0,10,i--)}

Jul 18 2017 1:58 AM UTC

}// 135/140

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u/cantelope

love it!
u/Purpzie

Shortened by 9 characters: for(c.width|=0,x.rotate(t*.1),i=3e3;i--;x.fillStyle="hsl("+360*((i/900-t)%1)+",100%,50%)",x.fillRect(0,0,10,i))x.rotate(i*.01)

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Xen

remix of d/2858 by u/dongwoo

function u(t) {

w=c.width=999;a=x.arc.bind(x);for(i=w;i;){x.beginPath();a(w/2,w/4,i--,i,i-t*t*t);x.stroke()}

Jul 17 2017 10:33 PM UTC

}// 92/140

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Scream if you want to go faster!

u/katkip

hurts

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Xen

remix of d/2051 by u/xem

function u(t) {

c.style=`background:radial-gradient(gold,cyan,purple,#FFF 50%);transform:rotateX(${t*t}deg)rotateY(${t}rad)rotateZ(${t}rad)scale(${T(t*t)})`

Jul 17 2017 8:02 PM UTC

}// 140/140

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CodeUh

function u(t) {

W=c.width=1920;x.translate(W/2,0);for(i=0;i<W/2;i++){x.fillRect(1,1+i,5,5);x.rotate(C(d=t+i/.1));x.fillStyle=i%2==1?"#006600":"#660000"}

Jul 17 2017 6:18 PM UTC

}// 136/140

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u/joeytwiddle

I like how half of the points stay still through the middle of the swing
u/iverjo

Kinda intriguing

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Xen

remix of d/2869 by u/CodeUh

function u(t) {

X=E=N=c.width=1920;x.beginPath();x.translate(950,550);x.scale(9,5)
  for(i=0;i<t*199;i++)x.lineTo(999*C(t+i*4),99*T(t+i*4));x.stroke()

Jul 17 2017 4:47 PM UTC

}// 134/140

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an optical delusion! dont stare too long ;-)

u/joeytwiddle

Don't tell me what to do!
u/joeytwiddle

owww my eyess

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cantelope

function u(t) {

for(x.fillRect(0,0,i=(W=960)*2,i);i--;)x.clearRect(W+W/(Z=6+C(p=i/200+S(t)/(V=i/W*((Y=(i/50+t)%4-1)-3)/(2+Y))+t)*V)*S(p)*V,540+W*Y/Z,9,9)

Jul 15 2017 6:49 PM UTC

}// 137/140

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Special thanks to p01 for helping to golf this. <3

u/sigveseb

looks good!
u/donbright

fine work
u/joeytwiddle

#organic

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CodeUh

function u(t) {

c.width=1920;x.beginPath();x.translate(900,550);x.scale(9,9)
  for(i=0;i<23;i++)
    x.lineTo(50*C(t*i/9),50*S(t*i/9));
  x.stroke();

Jul 15 2017 3:25 PM UTC

}// 136/140

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u/Xen

Done Re-mi(X)en
u/Xen

#2881

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cesque

function u(t) {

c.width*=1;for(i=0;i<7;i+=.01){for(q=i,j=32;j<256;j+=32){r=2*j+S(i*j/4+t*8)*10;x.fillStyle=R(j,j,j);x.fillRect(960+r*C(q),540+r*S(q),8,8)}}

Jul 14 2017 11:53 PM UTC

}// 139/140

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kairos

function u(t) {

w=20;s=S(t);s<.1&&s>-.1?c.width=1920:0;
for(i=0;i<c.width/w;i++){x.fillRect(i*w,s*((c.height-w*4)/2)+(c.height/2)+T(i)*T(t)*90,w,s*T(t)*w);}

Jul 14 2017 6:37 PM UTC

}// 140/140

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yokljo

function u(t) {

s=(C(t*t)+1)*250;x.fillStyle=g=x.createRadialGradient(s,s,0,s,s,s);a="addColorStop";g[a](0,R(s));g[a](1,R(0,0,s));x.arc(s,s,s,0,7);x.fill();

Jul 14 2017 11:30 AM UTC

}// 140/140

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Had to start somewhere...

u/sigveseb

sweet!

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