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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joeytwiddle

function u(t) {

c.onclick=()=>speechSynthesis.speak(new SpeechSynthesisUtterance(`This dweet can speak. Here are the deets: `+u))

Aug 6 2017 8:11 AM UTC

}// 113/140

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A speaking dweet (simple version)

u/joeytwiddle

Inspired by this 1k: http://www.pouet.net/prod.php?which=71407#VO…

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Anthorouss

function u(t) {

c.width=1920
for(i=0,a=255,x.fillStyle=R(t*150%a,t*200%a,t*50%a);i<(300*t)%4000;i++)x.fillRect(S(i)*t*300%600+960, C(i)*t*300%600+540,10,10)

Feb 1 2018 9:47 PM UTC

}// 140/140

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ciaccodavide

remix of d/21539 by u/ciaccodavide

function u(t) {

for(i=3e3;i--;)T=t*(i+t)*i%4,X=C(~~T%2==0?X/f:(W-X)/f+X)*W,Y=S(T<2?Y/f:(W-Y)/f+Y)*1080,x.fillRect(X,Y,1,1)}{f=X=Y=2,W=1920

Feb 1 2021 2:45 PM UTC

}// 122/140

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SockTaters

function u(t) {

for(c.width=i=-1;++i<256;x.fillRect(99+C(t+Math.atan(Y/X))*(X*X+Y*Y)**.5,Y/9,17,9))x.fillStyle=R(X=16*(S(t)>0?i:~i)&240,Y=15|i^(C(t)<0)*240)

Sep 18 2024 9:06 PM UTC

}// 140/140

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Voxel Rendering

u/SockTaters

The math in R() ensures the farthest voxels from the viewer are drawn first regardless of rotation. If a 2**X by 2**X grid is labeled the obvious way (with the numbers 0 to 2**(2*X)-1 left-to-right, top-to-bottom) and n is the index of a given corner, then i^n maps i to an ordering that starts at n's corner and ends at the opposite corner. Rectangles of 2**X by 2**Y might also work. The math in R() is somewhat obfuscated for golfing purposes.
u/SockTaters

n=[0,3,12,15][0];for(i=0;i<16;)console.log(i++^n)// try these 4 corner indices

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tzador

function u(t) {

c.width|=0,q=400
f=(o,p,g)=>[o+p*Math.max(0,S(g))*q,q+(g>0?C(g):1)*q,99,0,9]
x.arc(...f(999,1,S(t))),x.arc(...f(799,-1,S(t+3.14))),x.fill()

Jan 27 2025 9:08 PM UTC

}// 139/140

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Newton's balls

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smtsjhr

function u(t) {

c.width=1920;l=2000;r=.9994;
s=.0005*t+3.15;
x.beginPath(); 
for(i=0;i<400;i++)
x.lineTo(960+l*r**i*S(i*s),540+l*r**i*C(i*s));
x.stroke();

Sep 4 2019 8:42 AM UTC

}// 139/140

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Liner Eclipse

u/smtsjhr

best viewed in fullscreen

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katkip

remix of d/10029 by u/katkip

function u(t) {

c.width^=0;for(i=-1;i++<128;)for(j=-1;j++<72;)
x.fillStyle=
S(i&j+t*99/(i+j))>0?'#0f0':'#000',
x.fillRect(i*15,j*15,155,15)

Sep 22 2018 5:51 PM UTC

}// 123/140

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#sierpinski #waves

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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…

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Ulla62

function u(t) {

x.fillStyle=R(3*S(t)*120);
for(i=0;i<400;i++)
x.fillRect(100+i*S(t)*20,1,T(t),2500)

Mar 27 2021 8:09 AM UTC

}// 83/140

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magna

remix of d/9181 by u/magna

function u(t) {

for(i=389;i--;x.clearRect(i%26*80-T(a=t*2+i/2)*70,~~(i/26)*80+T(a+t)*70,3,6));for(i=20;i--;)x.fillRect(i*99,A=x.globalAlpha=T(i^t),A*99,2e3)

Aug 9 2018 7:59 AM UTC

}// 140/140

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