Dweets awesomed by u/jaemiejaemie

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: #Opposites

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quuxman

function u(t) {

p=t?p:Array(9e3).fill(0)
for(i=0;i<9e3;x.fillRect(p[i+=2]+=(p[i+1]+=Math.random()-.5)%2e3,p[i+2]%1e3,9,9))
x.fillStyle=R(S(t*5)*120,0,0,.3)

Dec 29 2017 10:45 AM UTC

}// 139/140

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u/Zikoat

i was looking for a way to initialize a variable, good one!
u/quuxman

Yah, stole it from u/Xem or someone
u/joeytwiddle

#virus #outbreak
u/vain

Amazing!

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jaemiejaemie

function u(t) {

c.width=640;p=Math.PI;for(i=0;i<30;i++){x.beginPath();x.arc(320, 180, Math.pow((i+((t*5)%1)),2),0,2*p);x.stroke()}

Dec 29 2017 5:59 AM UTC

}// 114/140

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UnacceptableUse

function u(t) {

c.width=1920;
for(i=0;i<1920;i++)
x.fillRect(i,T(t*(i/100))*1000,50,50);

Dec 29 2017 12:09 AM UTC

}// 72/140

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u/berti

72 chars ftw! go you.
u/magna

Golfed down to 56: https://www.dwitter.net/d/4605

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xem

function u(t) {

if(!t)document.write("<h3>DWITTER SOURCE CODE EXPOSED! #H4XX0R😋<textarea style=width:85vw;height:85vh>"+document.documentElement.outerHTML)

Dec 28 2017 9:18 PM UTC

}// 139/140

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I'm so going to jail for that 😱

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u/Xen

LOL
u/E-Mouse

Xem and Xen in the same comments, comfusing!
u/Xen

:-D both in the same team aswell...
u/xem

xem vs. xen => the M means Mighty, the N means Nasty :D
u/Xen

Xtreme English Nutter!! ;-)
u/SIGILLIM

This is creative xD

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ellisk1

function u(t) {

c.width|=0;a=50;x.fillRect(950,1e3*T(t+10),a,a);for(i=0;i<a;i++)x.fillRect(i*a,1100,a,-200+.1*S(t)*(i*(39-i)*S(a*Math.abs(i-19)+10*t)))

Dec 28 2017 4:25 PM UTC

}// 135/140

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u/Xen

cool idea
u/joeytwiddle

#water #drop #waves

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jaemiejaemie

function u(t) {

c.width=640;x.beginPath;a=320;b=180;c.onmousemove=e=>X=e.offsetX;for(i=0;i<360;i++){x.lineTo(a+S(i*S(X))*180,b+C(i*C(X))*180)}x.stroke();

Dec 28 2017 5:14 AM UTC

}// 137/140

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use the mouse to create new images, mouse x code borrowed from #1629

u/Xen

thats where i got mine from LOL

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Citiral

remix of d/4160 by u/Citiral

function u(t) {

i=new Image();i.src="http://tny.im/bwl";x.drawImage(i,0,1080-S(t-0.5)*230)
c.style=`transform:rotate(${~~(t/6.1415)*180}deg);`

Dec 27 2017 9:24 PM UTC

}// 126/140

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I hope this works on all browsers :)

u/OlegSchwann

Unfortunately not. "The page’s settings blocked the loading of a resource."

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hope4tg

function u(t) {

function q(n){for(i=2;i<n;i++)if(n%i==0)return 0;return n>1;}for(w=0;w<37;w++)for(h=0;h<37;h++){if(q(h*37+w))x.fillRect(w*15,h*15,12,12)}

Dec 27 2017 6:02 PM UTC

}// 137/140

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Some prime number shenanigans. Sorry if this slows your browser down, it is not exactly an animation and I could not fit a clear in.

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ThirdEstate

function u(t) {

c.width=1920;
for(i=0;i<8e2;i++){a=S(t+i*4);b=C(t+i*3);
x.fillStyle=R(0,200+a,150+90*b);
  x.fillRect(955+C(i)*a*800,580+b*900,200*b,900*b)}

Dec 27 2017 4:27 PM UTC

}// 140/140

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u/Xen

the motion feels right, demoscene style...

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nystrand

function u(t) {

for(i=c.width|=g=(o,a=n=7,b=8,z)=>--n?g(n>5?i*n:t/n,b*C(o)-a*S(o),z,a*C(o)+b*S(o)):x.lineTo(a*(z+=40)+960,b*z+540);i--;g(i&t/2));x.stroke()

Dec 27 2017 12:24 PM UTC

}// 139/140

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u/jaemiejaemie

reminds me of older windows screensavers, really nice!
u/iverjo

How was this made?

dwitter.net | jaemiejaemie (2430)