Random dweets | Dwitter

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: #Food

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travistx

function u(t) {

c.width=1920;x.font='100px Arial';x.fillStyle=R(200,0,200);x.fillText('Holland Sucks',500+S(t)*500,580+C(t)*500)

Dec 27 2017 3:28 AM UTC

}// 112/140

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iverjo

function u(t) {

x.strokeStyle=R(9,t*23);d=99,X=960,Y=X-d*t,a=0;for(;t++<7;)X-=d*S(a),Y-=d*C(a),x.lineTo(X,Y),d*=.7,x.stroke(),a+=(Math.random()-.5)/(t/5+.3)

Feb 21 2016 9:03 PM UTC

}// 140/140

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It becomes different every time you run it, because it uses Math.random

u/iverjo

#tree #random

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metamero

function u(t) {

x.drawImage(stats.dom.children[0|t%3],-42,-9,w=2e3,1140)
for(i=w*Math.random()*9|0;i--;);
x.globalAlpha=.01

Jan 13 2019 1:01 PM UTC

}// 108/140

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u/DataMeta

#hiddengem

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danny@hille.dk

remix of d/25303 by u/pavel

function u(t) {

f=(X,Y,n=1)=>X*X>n?n:f(4*X*Y-.5,Y*Y-X*X,n+.4);for(i=5e4;t<1&&i--;x.fillRect(X=u&2047,u>>11,19/f(X/4e3+.1,u/4e6+.3),1))u=-~u

Apr 30 2022 6:21 PM UTC

}// 123/140

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Galaxy remix

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taupelink

remix of d/11655 by u/Undefined

function u(t) {

l=(n,a)=>(a.push(n),n-1?l(n%2?n*3+1:n/2,a):a)
c.width|=0,k=0,b=l(~~t+2,[]),m=(Math.max(...b)/99)|1
b.forEach(X=>x.fillRect(k++*20,0,20,X/m))

Jun 7 2019 2:21 AM UTC

}// 140/140

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Mini #collatz, adapted for column graphs #math

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lewdev

remix of d/34366 by u/lewdev

function u(t) {

onmousemove=e=>x.lineTo(e.x*(s=c.width/innerWidth),e.y*s),x.stroke()

Oct 1 2025 11:27 PM UTC

}// 68/140

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Paint that works in fullscreen too (-15b)

u/ximavus

good idea with the variable!
u/lewdev

I should credit u/KilledByAPixel in his dweet: d/34352 which does the same thing.

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Maxzilla

function u(t) {

c.width=1920;h=200;b=50
x.fillRect(1920/2-b,1080-b+(-Math.abs(S(t)*900)),b,b)

Dec 29 2017 4:20 PM UTC

}// 77/140

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veubeke

function u(t) {

t?c.width^=0:a=b=e=f=1;a+=e,b+=f;b>>3||x[k=b*8+a]&&x[k]--?f=-f:a>>3?e=-e:0;for(i=64;i--;)t?x[i]|i==k&&x.fillRect(i-i%8,i%8*8,8,8):x[i]=i>>5

Mar 3 2017 5:33 PM UTC

}// 139/140

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Turns out you can’t fit Breakout into 140b :D

u/iverjo

+1 for good effort :D

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KilledByAPixel

function u(t) {

c.width+=0;x.beginPath();for(i=1421;i--;)x.lineTo(960+900*S(i+t/3),540+500*S(3*i/2));x.stroke()

Apr 13 2019 6:44 AM UTC

}// 95/140

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Here's the 3:2 shape with a stroke.

u/metamero

#moire

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Xen

remix of d/21334 by u/danny@hille.dk

function u(t) {

with(x)for(c.width=i=300;i--;beginPath(stroke()))setLineDash([i/(t+S(t))/t]),strokeStyle=R(i,arc(155,89,S(i)**2*99,C(t+i/7),9),T(i+t)*99)

Jan 20 2021 8:17 PM UTC

}// 137/140

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quick play

u/Qwitter

that looks like the portal to the candy dimension