New #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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Current theme challenge: #ScaryMovies

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rep_movsd

function u(t) {

t||(x.fillRect(Y=0,0,W=2e3,W),D=32,E=D*.9)
for(X=0;X<W;X+=D)Q=!(P=(C(X**5/Y)>0)*E)*E,x.fillStyle='#9D0',x.fillRect(X+P,Y+Q,D-2*P,D-2*Q);Y+=D

Mar 10 2022 1:08 PM UTC

}// 140/140

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Random weave

u/Joachim

#pattern #random
u/pavel

Very nice.
u/pavel

117 and instant draw t||x[f='fillRect'](0,0,i=2e3,i);for(x.fillStyle='#9D0';i;x[f](i%64*36+D,(i>>6)*36-D,32-2*D,32+2*D))D=C(--i**9)>0?2:-2
u/Joachim

u/pavel I don't know why but changing this (i>>6)*36-D,35-D,35+D makes a biased maze
u/pavel

I think thats the trick to the original dweet. It's a golfed maze with a visual filter.

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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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ciaccodavide

function u(t) {

q=Math.random()*4
X+=q<1?-1:q<2?1:0
Y+=q>3?-1:q>2?1:0
X=X<0?0:X>60?60:X
Y=Y<0?0:Y>30?30:Y
x.fillRect(X*32,Y*32,32,16)
}{d=b={}
X=30,Y=15

Oct 28 2020 6:52 PM UTC

}// 136/140

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Horizontal Drawing

u/ciaccodavide

#random

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BriSeven

function u(t) {

a=c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,600,50,S(a+=(i+t)*t*a)*200) // draw 50x200 rects

Apr 21 2020 7:02 AM UTC

}// 130/140

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#default #random #prng

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pavel

function u(t) {

f=(i,j=i%1,k=~~i,m=j*j*(3-2*j))=>S(k*k)*m---m*S(--k*k)
for(i=c.width|=0;i--;)x.fillRect(i,540+99*f(i/32+5*t),5,5)

Mar 28 2020 9:41 PM UTC

}// 113/140

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I would love to find a better / shorter 1D noise function #challenge

u/pavel

This one assigns a 'random' number to each integer k via S(k*k) and uses smoothstep to interpolate between them.
u/pavel

Another idea to play around with f=(i,n=9)=>n&&C(n**.5*i)/n+f(i,n-1)
u/joeytwiddle

#random

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BriSeven

remix of d/3559 by u/BriSeven

function u(t) {

if(!t)d=[];Y=X=t*20;for(i=0;i<1e3;i++) D=(d[i]||1),d[i]=D+S(D*t*i)/9, x.fillRect(X+=C(d[i]), Y+=S(d[i])*9, 5, 5);x.fillStyle=R(S(t)*i/4)

Feb 26 2020 4:44 AM UTC

}// 136/140

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Strata #growth #random

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BriSeven

remix of d/3561 by u/Xen

function u(t) {

if(!t)d=[];X=Y=500*(t%2);for(i=1e3;i--;x.fillRect(X+=C(d[i])*9,Y+=S(d[i]),Z=S(d[i]),Z))D=(d[i]||1),d[i]=D+C(D*i*9+t*D-t);x.fillStyle=R(D*64)

Feb 26 2020 3:26 AM UTC

}// 140/140

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Sediment #random #pseudorandom

u/Xen

love it!

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joe.m

function u(t) {

c.width=1920
for(i=121;i--;)u[i]=Math.random()>0.5
for(i=121;i--;)if(u[i])x.fillRect(174*(i/11|0),98*(i%11),172,96)

Sep 28 2019 8:23 AM UTC

}// 115/140

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building blocks... #random

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marc8

function u(t) {

c.width=w=1920
p=t?p:Array(w).fill(0)
with(Math)for(m=min(...p),i=w;i;)p[random()*w|0]++,x.lineTo(i,(p[i--]-m)/(max(...p)-m)*1e3)
x.stroke()

Jul 1 2019 8:54 PM UTC

}// 140/140

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This is your PRNG distribution (let it run)

u/donbright

neat
u/joeytwiddle

#random

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veubeke

function u(t) {

V=t?[Math.random()*48|0,...V.slice(0,c.width=480)]:[]
for(i=48;i--;x.fillRect(i*10,260,9,-S*9))S=0,V.map(v=>S+=v==i),x.fillStyle=R(99+S*9)

Jun 19 2019 8:30 PM UTC

}// 138/140

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Random number distribution

u/username

seems flawed
u/veubeke

Because it’s showing the last 480 numbers. If you accumulate more data it eventually evens out.
u/joeytwiddle

#random numbers are more likely to coincide than fall evenly. Coincidences are almost guaranteed! https://en.wikipedia.org/wiki/Birthday_probl…

dwitter.net | #random