Top #random dweets

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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qm3ster

remix of d/12153 by u/LimeLaser

function u(t) {

r=Math.random;p=t?p.map(([a,b,f=R(0,a/8,b/4)]=[1920*r(),1080*r()])=>[a+4-8*r(),b+4-8*r(),x.fillStyle=f,x.fillRect(a,b,2,2)]):[...Array(999)]

Mar 5 2019 3:25 PM UTC

}// 140/140

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#golfed added colors instead

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u/qm3ster

Colors correspond to starting position. Horizontal speed is now equal to vertical.
u/f8f82804

This might be one of the best #random dweets I've ever seen! Gorgeous!
u/LimeLaser

This is awesome!
u/pavel

131 for(r=Math.random,i=1e3;i--;x.fillRect(S[i]+=4-8*r(),C[i]+=4-8*r(),2,2))S[t]=2e3*r(),C[t++]=1080*r(),x.fillStyle=R(0,S[i]/8,C[i]/4)
u/qm3ster

@pavel why do you use 2e3 as approximation for 1920 but not 1e3 as approximation for 1080? It's not like they're used as bounds.
u/qm3ster

@pavel it doesn't persist the colors of the particles, so it just paints the whole c a gradient.
u/pavel

Ah, I didn
u/pavel

I didn't catch the color change, it does complicated the code: 138 for(r=Math.random,w=i=2e3;i--;x.fillRect(S[i]+=4-8*r(),C[i]+=4-8*r(),2,2))c[t]=S[t]=w*r(),x[t]=C[t++]=w*r(),x.fillStyle=R(0,c[i]/8,x[i]/4)
u/pavel

2e3 overruns and you can't see it. 1e3<1080 so the bottom has more whitespace and it looks bad.
u/pavel

135 for(r=Math.random,w=i=2e3;i--;x.fillRect(p[0]+=4-8*r(),p[1]+=4-8*r(),2,2))p=u[i]=t?u[i]:[a=w*r(),b=w*r(),R(0,a/8,b/4)],x.fillStyle=p[2]
u/pavel

134 for(r=Math.random,w=i=2e3;i--;x.fillRect(p[0]+=4-8*r(),p[1]+=4-8*r(),2,2))p=u[i]=u[i]||[a=w*r(),b=w*r(),R(0,a/8,b/4)],x.fillStyle=p[2]
u/pavel

This does look great :), not sure what else to add with the spare chars
u/qm3ster

Nice! I limited it to 100 particles, each gets 20 movements per frame now:
u/qm3ster

for(r=Math.random,w=i=2e3;i--;x.fillRect(p[0]+=2-4*r(),p[1]+=2-4*r(),2,2))p=u[z=i%100]=u[z]||[a=w*r(),b=w*r(),R(0,a/8,b/4)],x.fillStyle=p[2]

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katkip

remix of d/13185 by u/katkip

function u(t) {

q=frame;f=x=>Math.random()-.5;x.fillStyle=`hsl(${f()*360*q} 99%50%)`,x.fillRect(960+q*f(),540+q*f(),f()*q,f()*q);x.drawImage(c,f()*q,f()*q)

Apr 11 2019 4:42 PM UTC

}// 139/140

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#random

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katkip

function u(t) {

eval(unescape(escape`楦⠡琩筩㴹㘰㭪㴵㐰絲㵍慴栮牡湤潭㭰㵮㴾⠨爨⤼〮㔩⵮⤽㴰㼱㨭ㄻ椫㵰⠱⤪㄰㭪⬽瀨ㄩ⨱〻砮晩汬剥捴⡩ⱪⰲ〬㈰⤻砮杬潢慬䍯浰潳楴敏灥牡瑩潮㴧硯爧㭸⹦楬汓瑹汥㵠桳污⠤筩籪紬㠵┬㔰┩总`.replace(/u(..)/g,"$1%")))

Aug 18 2018 11:28 AM UTC

}// 134/140

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Random virtual ant that actually builds underground tunnels. Inspired from Langton's Ant and compressed using d/9207

u/BirdsTweetCodersDweet

#ant #compressed #random #langton
u/BirdsTweetCodersDweet

Nice, do the colors represent the depth or something?

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firegodjr

remix of d/8125 by u/prplz

function u(t) {

x.font='3em x';r=Math.random;for(i=63;i--;x.fillText('◢◣◤◥'[r()*4|0],i*32,(t*5|0)*32))f=r(),x.fillStyle=f>C(i/5)+(t-3)%6/2?'#fff':'#000'

May 18 2018 7:59 PM UTC

}// 136/140

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Geometric sin wave ^^

u/firegodjr

#triangles #sinwave #random
u/Xen

niiice
u/aleamb

cool
u/firegodjr

#charmatrix
u/firegodjr

And thanks!

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sigveseb

remix of d/5540 by u/veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
(t+i)**4%1

Jan 4 2018 11:51 PM UTC

}// 129/140

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Veubeke's random challege

u/magna

Looks random to my human eyes
u/iverjo

Seamless!
u/sigveseb

#random

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veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
i/M

Jan 4 2018 11:14 PM UTC

}// 122/140

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This is a template to play with drop-in replacements for Math.random(). Enter code in the last line that uses the existing variables to produce values in the range [0,1). Red squares will appear if values are out of range.

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u/veubeke

A bad example :) https://www.dwitter.net/d/5541
u/sigveseb

A bit on the long side, but looks good: https://www.dwitter.net/d/5545
u/magna

Reminder that we can now link to dweets using the short notation: d/5545
u/joeytwiddle

Try: i**t%M/M One issue with sine/cosine is more black+white than grey: .5+S(i**t)/2
u/f8f82804

#tool #template
u/joeytwiddle

#random #challenge

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mxfh

remix of d/2181 by u/veubeke

function u(t) {

t?v=Math.random()*8:x.scale(8,8,_=[])
x.clearRect(e=_[i=~~v]?_[i]+=v%.1:_[i]=1,$=i*16,990,15)
x.fillText(e>170?'🐌finished':'🐌'+~v,e,$+14)

Mar 18 2017 2:57 AM UTC

}// 137/140

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taking bets now ;)

u/veubeke

Amazing! and finally a good use for clearRect
u/sfz

had to e*=33 for my a.d.d... very cool!
u/iverjo

#random

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rodrigo.siqueira

function u(t) {

if(!t)seed=123,max=1920
for(i=1e4;i--;){
 X=Math.sin(++seed)**2 * 1e9 % max
 Y=Math.sin(++seed)**2 * 1e9 % max
 x.fillRect(X,Y,1,1)
}

Jul 12 2021 2:24 PM UTC

}// 133/140

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Space filling using pseudo random number generator by u/KilledByAPixel as seen on his Twitter post: https://twitter.com/KilledByAPixel/status/14… #random #noise

u/tomxor

#PRNG

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zanella

function u(t) {

w=1920;h=1080;r=Math.random;x.fillStyle=R(0,0,0,.1);x.fillRect(0,0,w,h);x.fillStyle='#1ef';x.beginPath();x.arc(r()*w,r()*h,22,0,6);x.fill()

Dec 29 2017 1:49 PM UTC

}// 139/140

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u/iverjo

#dots #random

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magna

remix of d/2420 by u/magna

function u(t) {

c.width|=0;for(j=9;j--;)for(i=100;i--;s=S(t),X=i%5+j*10+s*30,Y=i/5|0,S(Y+t*7)/4<Math.random()&&x.fillRect(400+X*10,400+Y*10,10,10));

Apr 18 2017 4:06 AM UTC

}// 132/140

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#default #noise

u/iverjo

#random

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