Dweets awesomed by u/Barth

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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BackendForth

remix of d/6196 by u/BackendForth

function u(t) {

t?r-=m:a=Array(w=200)
for(m=1,i=c.width=w;i--;){if(!t)r=9,a[i]=i*i%99
x.fillRect(i,0,1,q=a[i])
if(q>>r>a[i+1]>>r)a.splice(i,2,a[i+1],q),m=0}

Jan 19 2018 3:04 AM UTC

}// 140/140

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u/iverjo

Radix sort

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BackendForth

remix of d/6194 by u/BackendForth

function u(t) {

if(!t){for(a=Array(i=w=240);i--;)a[i]=i*i%99}for(m=i=c.width=w;i--;){x.fillRect(i,0,1,a[i])
if(a[i]>a[i+1]&&m)a.splice(i,2,a[i+1],a[i]),m=0}

Jan 18 2018 10:45 PM UTC

}// 140/140

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u/iverjo

Nice :) Insertion sort, right?
u/BackendForth

Yup. Also did bubble and radix.
u/Lazy1337

#sort

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BackendForth

function u(t) {

c.width=w=1920
if(!t){for(a=Array(i=w);i--;)a[i]=i**9%999}for(i=w;i--;)x.fillRect(i,0,1,a[i]),a[i]>a[i+1]?a.splice(i,2,a[i+1],a[i]):0

Jan 18 2018 6:09 PM UTC

}// 133/140

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u/iverjo

Bubble sort
u/Lazy1337

#sort

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sandromiccoli

function u(t) {

N=n=>Math.random()*n
x.fillStyle=R(N(255))
x.fillRect(959,N(2e3),2,1)
x.drawImage(c,2,s=S(t))
t%13<1?c.width=2e3:x.drawImage(c,-2,s)

Jan 14 2018 9:46 PM UTC

}// 132/140

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u/Qwitter

Nice! Looks Evilish & Faaarreeeecky
u/joeytwiddle

The first iteration makes me think of a Chinese Dragon: https://www.google.co.uk/search?site=&tb…

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Bam191

remix of d/5936 by u/Bam191

function u(t) {

x.fillStyle=t?'#0f0':x.fillRect(0,0,宽=2e3,宽),r=Math.random,x.font="3em'",b=t*宽%1100,b>1e3?a=r()*宽:x.fillText(String.fromCharCode(r()*宽),a,b)

Jan 12 2018 1:56 PM UTC

}// 140/140

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With help from the code golf team, we were able to get the matrix crawl to have a black background :D

u/sigveseb

would be cool to have some sort of feature in dwitter to group effects into categories. Here's my take at matrix! :D d/4922
u/iverjo

Tags would be helpful for grouping effects
u/rippedspine

nice!
u/joeytwiddle

#matrix

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BackendForth

function u(t) {

c.width=1920
x.moveTo(960,540)
  for(i=0;i<6.28;i+=.01)
  x.lineTo(270*C(i)+270*C(i*t*t)+960,270*S(i)+270*S(i*t*t)+540)
x.stroke()

Dec 29 2017 5:37 PM UTC

}// 131/140

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Xen

remix of d/4532 by u/veubeke

function u(t) {

c.onmousemove=e=>{Y=e.y*3,X=e.x*3}
t?x.fillRect(q+=(X-q)/Z,p+=(Y-p)/Z,Z,Z):Z=X=Y=q=p=99
x.fillStyle=R(p%255,q%255,(p+q)%255,.1)

Dec 28 2017 11:25 PM UTC

}// 127/140

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little test to make it slowly chase mouse...

u/sigveseb

Nice

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Exca

function u(t) {

for(i=0;i<5184;i++){q=i%96,w=i/96|0,r=q+w==0?192:S(t+q*w),y=r*99;x.fillStyle=q+w==0?"#000":R(0,y*2,y*4,1);x.fillRect(q*20,w*20,r*20,r*20);
}

Dec 27 2017 3:10 PM UTC

}// 140/140

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u/sigveseb

Good colors
u/CliffJonesJr

This is what my carpet looks like after mushrooms.

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itsjustmustafa

function u(t) {

c.width=1920;for(i=0;i<20;i++)a=(i+t*3)%20,x.font="100px Sans",x.fillText("💦",a*96+800,500+(a*2)**2);x.fillText("🍆",700,475)

Dec 27 2017 5:17 AM UTC

}// 125/140

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u/Barth

The best

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szymski

function u(t) {

y=100;c.width|=0;r=3.14159;o=(-2+(t/10%1)*24)*y;a=o/141.42;x.translate(o,950-y/r*S(a*2%r));x.rotate(a);x.fillRect(-y,-y,200,200);

Dec 26 2017 8:52 PM UTC

}// 129/140

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u/lionleaf

Welcome to dwitter! Neat one :D
u/sigveseb

ooh nice

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