Dweets awesomed by u/pe8ter

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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pe8ter

function u(t) {

d=127
x.fillStyle=R(d+d*S(t),d+d*S(t/2),b=d+d*C(t/3),.5+.5*S(t))
for(i=0;i<1920;i+=10)x.fillRect(i,535+535*S(C(i/200+2*t)-6*S(t/2)),21,200)

Dec 27 2017 9:10 PM UTC

}// 139/140

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superfun

function u(t) {

z=t-~~t
q=parseInt(Math.random()*0x4E)
r=0x1F601+q
x.font=250*z+'px serif';x.fillText(String.fromCodePoint(r),800+800*S(q*t),600+6*q*C(t))

Dec 27 2017 9:09 PM UTC

}// 138/140

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u/Xen

stirs the emojion! :-D

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most

function u(t) {

c.width=1920;
n=30
w=1920/n
h=w*3
for(i=0;i<n;i++){
x.fillStyle = R(255,0,i*255/n, 1)
x.fillRect(w*i,540-(h/2)+T(t/3+i)*70,w,h)}

Dec 27 2017 9:08 PM UTC

}// 128/140

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Citiral

function u(t) {

i=new Image();x.fillStyle="#fee3b8";x.fillRect(0,0,1920,h=1080);i.src="http://tny.im/bwj";x.drawImage(i,0,1080-S(t-0.5)*230)

Dec 27 2017 9:07 PM UTC

}// 124/140

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Xen

remix of d/4129 by u/MrAnderson

function u(t) {

for(i=191;i--;x.fillRect(940+((i/66)%1)*S(t+i)*637,i*15%1e3,99,11))x.fillStyle=R(0,S(t*i)*i*t%i*2,0,.1)

Dec 27 2017 9:07 PM UTC

}// 103/140

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Tree variation 3

u/iverjo

#tree

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penguin

function u(t) {

c.width=2e3;z=1e3;b=x.lineTo.bind(x);for(i=0;i<z;i+=z/t)b(0,i),b(z-i,0),b(z,z-i),b(i,z),x.strokeStyle='hsl('+90*t+',75%,50%)',x.stroke();

Dec 27 2017 9:00 PM UTC

}// 137/140

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Bendoman

function u(t) {

c.width=1920;for(i=0;i<20;i++){x.arc(900+C(t)*-30*i,200+(i*20),20,0,Math.PI*2);x.arc(900+S(t)*30*i,900-(i*20),20,0,Math.PI*2);x.stroke()}

Dec 27 2017 9:00 PM UTC

}// 137/140

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AliYil

remix of d/4139 by u/AliYil

function u(t) {

c.width=1920;for(i=0;i<50;i++)for(j=0;j<28;j++){s=S(S(t)*(i-10)+j)*25+25
x.beginPath()
x.arc(i*100,j*100,s,0,2*Math.PI,false);
x.fill()
}

Dec 27 2017 8:50 PM UTC

}// 137/140

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u/itsjustmustafa

wow this is kinda neat

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karan

remix of d/3713 by u/bobdunn

function u(t) {

c.width=1920; 
for(i=0;i<64;i++){
x.fillStyle=`hsl(${t*70},47%,50%)`;
  x.fillRect(i*40, 400 + C(4*t+(i*3))*100, 27, 200)
  }

Dec 27 2017 8:50 PM UTC

}// 125/140

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Moosething

function u(t) {

v=c.width|=m=x=>x>0?x*z:0;z=240;for(i=0;i<7;i++) x.arc(p=i==0?z-m(V=S(t*5)):i==6?v-z+m(-V):z+i*z,3*z,z/2,0,7),x.rect(p,0,7,3*z);x.fill()

Dec 27 2017 8:19 PM UTC

}// 136/140

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u/sigveseb

Newtons cradle :D
u/katkip

x.arc(p=i==0?z-m(V=C(t*2.812)):i==6?v-z+m(-V):z+i*z,3*z,z/2,0,7) for real life speed

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