Dweets awesomed by u/DirtyDan

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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AnnanFay

remix of d/6862 by u/AnnanFay

function u(t) {

x.globalCompositeOperation='hue'
x.drawImage(I,X=t**3%1*2e3,Y=X**3%1e3,s=200,s,X+S(X%4)*X,Y,s,s)};{I=new Image
I.crossOrigin=I.src='//具.pw'

Feb 12 2018 7:47 PM UTC

}// 139/140

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!h6q: please link https://picsum.photos/1920/1080?random

u/AnnanFay

Heh, we don't need I.crossOrigin= any more so there's 15 characters to play with.
u/davidsharp

Woah, nice thinking outside of the box 🤯

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AnnanFay

remix of d/6857 by u/olligobber

function u(t) {

c.width|=i=8
for(m=200,r=t;i--;m=-m)x.stroke(new Path2D(`M960,${520-m*13/8}l${p=m*S(r)},${m}l${(q=m*S(r+=.79))-p},${m*5/4}h${m*C(r)-q}`))

Feb 11 2018 3:42 PM UTC

}// 137/140

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u/Yogeshp3

It's one of those things that you can't tell whether it's rotating clockwise or anticlockwise

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BackendForth

function u(t) {

c.width|=0
m=C(t/5)
n=S(t/5)
for(i=3999;i--;)p=i/2,q=C(p-t)*p,r=S(p-t)*p,a=m*p-n*r,b=n*p+m*r,x.fillRect(960+a*C(t)+q*S(t),480+b,9,9)

Feb 9 2018 5:42 PM UTC

}// 132/140

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u/fons

nice!

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unts-unts-unts-unts

function u(t) {

for(j=0;j++<80;)
for(i=0;i++<10;){
x.fillStyle=R(X=i*j%256,128*(1+S(j*t)),256-X)
x.fillRect(960+12*j*C(s=i*t/3),540+12*j*S(s),12,12)}

Feb 9 2018 3:41 PM UTC

}// 133/140

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u/dogspace

woahh!

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jonathan_b

remix of d/6724 by u/jonathan_b

function u(t) {

with(x)for(i=1920;i-=40;beginPath(fill()))r=C(t)*25,arc(920+r+T(r/9)*99,540+r/3*C(i+t*2),i,0,7),fillStyle=`hsl(${t*9+i/r*2},70%,${99-i/9}%)`

Feb 9 2018 7:53 AM UTC

}// 140/140

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u/magna

Whoa!
u/aleamb

amazing!

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DirtyDan

remix of d/6798 by u/bokoskokos

function u(t) {

a=-Math.abs(S(t*5))
c.width|=0;f=Math.PI*2;x.font='220px Arial';x.fillText('🏀',870,715+a*200);x.ellipse(1010,750,90+a*50,10,0,f,0);x.fill()

Feb 8 2018 10:48 PM UTC

}// 139/140

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u/joeytwiddle

#bounce

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Agnes

function u(t) {

t==0&&(url=`url(https://source.unsplash.com/random/1920x1080)`);c.style.background=url;c.style.filter=`hue-rotate(${10*t}deg)`;

Feb 8 2018 9:13 PM UTC

}// 127/140

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snydej

function u(t) {

with(x)for(fillStyle="#FFF2",i=h=540,n=h*h,fillRect(0,0,n,n),beginPath();i--||stroke();lineTo(960+r*C(s),h+r*S(s)))s=h*t+i/54,r=h*C(s*s/n+s)

Feb 8 2018 9:51 AM UTC

}// 140/140

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u/DirtyDan

with(x)... good to know
u/katkip

#moire

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DirtyDan

remix of d/6778 by u/DirtyDan

function u(t) {

c.width+=0
for(i=16;i>0;i--)x.beginPath(),x.ellipse(960,540,a=(1+S(t*i/8))*(b=135/8*i),a,0,0,44/7),x.globalCompositeOperation='xor',x.fill()

Feb 7 2018 9:04 PM UTC

}// 140/140

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u/fons

mind burn

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DirtyDan

function u(t) {

c.width+=0
for(i=8;i>0;i--)x.beginPath(),x.ellipse(960,540,(1+C(t*i))*(b=270/8*i),(1+S(t*i))*b,0,0,44/7),x.fillStyle=R(i%2*255),x.fill()

Feb 7 2018 8:59 PM UTC

}// 136/140

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