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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katkip

function u(t) {

c.style.background=R();for(i=0;i<999;i++)x.fillStyle=`hsl(${i*t},99%,80%)`,x.fillRect(C(i+t*i/99)*(a=i*C(t*i/360))*3+960,S(i)*a*2+540,1,.1);

Oct 1 2018 11:56 AM UTC

}// 140/140

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Galaxy

u/donbright

very cool

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Xen

remix of d/21533 by u/New_Core

function u(t) {

for(w=c.width|=i=600;i--;x.fillStyle=`hsl(${i*t},99%,50%)`)x.fillRect(i+i/20*C(i*38+t*9),i%20*20+i*S(i/w-.1*S(i/99-t*4)),q=C(i*t)*9+9,i?q:w)

Feb 1 2021 6:29 PM UTC

}// 140/140

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Xen flag remix lol

u/danny@hille.dk

Sweet :-)
u/tomxor

Moar falg!

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taupelink

remix of d/29183 by u/taupelink

function u(t) {

with(x)for(i=r=220;i--;stroke())d=t**t/t,beginPath(strokeStyle=R(r%i,i,r-=3*S(i+r),t/6)),arc(i%11*r,i%7*r+i/d,r/d,r+=t/4,r-3),lineWidth=30/d

Dec 26 2023 10:59 PM UTC

}// 140/140

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d/29213

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xpf

function u(t) {

x.clearRect(0,0,1920,1080);n=0,a=t;while(n<50){x.beginPath();x.arc(960+400*S(a),540+400*C(a),n,0,7);x.stroke();n+=2,a+=.1;}

Jan 21 2023 7:04 PM UTC

}// 123/140

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Chat GPT Dweet 2

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anotherkitten

function u(t) {

c.width|=0;with(x)scale(9e3,2e4),rotate(t),beginPath();for(i=750;i--;)x.lineTo(T(t/i),T(i/t));x.globalCompositeOperation = 'xor';x.fill()

Oct 5 2018 1:45 PM UTC

}// 137/140

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folding

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜐲𞐻𪐭𛐻𨡥𩱩𫡐𨑴𪀨𩡩𫁬𚁥𫁬𪑰𬱥𚀹𝠰𚱓𚁴𚱩𛰹𚐪𞐹𚰳𜀰𚠨𥀿𪐭𞀹𛠵𞠰𚐬𜐱𝀰𛑩𚠸𛁲𛁔🱲𛑲𚡃𚁴𚐪𚠲𜀰𞡲𛰲𛁔🐰𛀰𛀷𚐩𚐩𬠽𪐾𞐰🰨𜡥𝐭𚁩𚠹𛐷𜠰𚐪𚠲𚐪𚠮𝐺𪐾𞀸🱔🐶𞐺𪐪𪐯𜐸𛁧𫁯𨡡𫁁𫁰𪁡👔🰱𞠮𜀳`.replace(/u../g,'')))

Oct 22 2019 11:19 PM UTC

}// 140/140

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Friendly Ghost 👻

u/jellyedwards

Very cool
u/KilledByAPixel

#Inktober day 22: Ghost
u/joeytwiddle

#cute #halloween #ghost

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smtsjhr

function u(t) {

c.width|=0,s=355,x.font='450px serif'
for(i=0;i<9;i++)for(j=0;j<4;j++){
x.fillText('▩',i*s-s,j*s)
x.fillText('▩',i*s-2*s+500*C(t/5),j*s)}

May 19 2020 12:09 AM UTC

}// 138/140

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a Moire pattern using the character: ▩▩▩▩ "Square With Diagonal Crosshatch Fill"

u/smtsjhr

see d/18898 for a peak behind the scenes!

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RomanW

remix of d/5246 by u/hnen

function u(t) {

c.width=k=2e3;w=k/2;a=Math.abs;for(i=0;i<k;i+=10)for(v=40;v<w;v+=5){dx=i-w;a(5*t+w/v)%2<1^(a(dx/v)%30)||x.fillRect(i,v,10,v/100)}

Jan 2 2018 7:25 PM UTC

}// 129/140

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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

Show more comments…
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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Bloodyaugust

function u(t) {

x.lineWidth=20;s=.9;for(i=7;i--;){x.strokeStyle=R(0,S(t*9+i)*255);x.beginPath();x.arc(c.width/2,c.height/2,100,i*s,i*s+s);x.stroke();}

Sep 8 2023 9:57 PM UTC

}// 134/140

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Loading spinner! My first attempt at "demoscene". I wanted more color variability, but even getting the lines down this low was a struggle.

u/magna

#loader
u/magna

#loading
u/Xen

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