Dweets awesomed by u/seanrox

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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seanrox

function u(t) {

t||x.translate(X=960,540,c.onmousemove=e=>X=e.offsetX);for(i=80;i--;x.rotate(8))x.fillStyle=`hsl(${X},80%,${i}%)`,x.fillRect(i,S(t)*960,i,i)

Mar 2 2017 8:46 AM UTC

}// 140/140

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seanrox

function u(t) {

x.font='60px Arial';y=t*60%27*41;x.fillStyle='#000';x.fillRect(0,y,1920,41);x.fillStyle='#090';for(z=0;z<64;z++)x.fillText(z*y*t%9|0,z*30,y)

Mar 2 2017 8:45 AM UTC

}// 140/140

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u/5Mixer

Hacking the mainframe. :P

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ClayCowgill

function u(t) {

r=_=>Math.random()*255
x.rotate(t/10);
x.shadowBlur=r();x.shadowColor=R();
x.fillStyle=`hsl(${r()},100%,50%)`,x.fillRect(t*20,t*20,50,50)

Mar 2 2017 7:55 AM UTC

}// 137/140

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u/donbright

cool
u/SpecialAgent

nice effect!

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ClayCowgill

function u(t) {

for(j=0;j<900;j++)x.globalAlpha=.3,
i=S(t)*4,s=S(t+j),o=C(t-j),x.fillStyle=`hsl(${j-t},100%,50%)`,x.fillRect(950+j*s,500+j*i*o/3,10,10)

Mar 2 2017 7:14 AM UTC

}// 135/140

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u/Purpzie

Shortened by 18 characters: for(x.globalAlpha=.3,j=900;j--;)x.fillStyle=hsl(${j-t} 99%50%),x.fillRect(960+j*S(t+j),540+j*(S(t)*4)*C(t-j)/3,9,9)
u/Purpzie

Wait, 2 more characters can be shaved off so now it's 20 characters less than yours: for(x.globalAlpha=.3,j=900;j--;)x.fillStyle=hsl(${j-t} 99%50%),x.fillRect(960+j*S(t+j),540+j*S(t)*4*C(t-j)/3,9,9)

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seanrox

function u(t) {

l=c.width+=i=0;h=400;for(;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(l*C(i*i)+~~a*(w=a*h-h)*C(j),(~~a?h:a*h)*(C(i)*C(i)+2)+w*S(j)/4,3,3)

Mar 1 2017 8:02 AM UTC

}// 140/140

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u/Niklas

Copy of: https://www.dwitter.net/d/1494

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seanrox

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 */

Mar 1 2017 8:01 AM UTC

}// 122/140

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