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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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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metamero

remix of d/11826 by u/f8f82804

function u(t) {

//!function _(){throw("!"+_+"()")}()
//(function _(){throw'('+_+')()'})()
//(_=ü=>{throw'(_='+_+')()'})()
//(_=ü=>{throw`(_=${_})()`})()

Jan 15 2019 9:44 PM UTC

}// 136/140

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4 more dwitter quines (following that interpretation) uncomment to see results

u/metamero

special mention to u/f8f82804 's record d/11826 (sor far now / i know)
u/f8f82804

#quine #dwitterquine

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lerc

function u(t) {

eval(unescape(escape`𭁼𯀨𫀽𦱝𚐊𨰮𭱩𩁴𪁞👮🐰𒡺🐹𝠰𒡲👟🐾𣑡𭁨𛡲𨑮𩁯𫐨𚐪𜠭𜐊𫀽𦰮𛠮𫀮𬱬𪑣𩐨𛑺𚐬𦱛𮠬𜁝𛁛𝐴𜀬𜁝𧑝𛡭𨑰𚁰🐾𬀮𫑡𬀨𚁛𬀬𫑝𚐽🡛𬀫𫐬𚁭𚱲𚀩𚐪𛠹𞑝𚐩𒡦𫱲𚁛𦱭𧐬𦱰𧑝𫱦𘁬𚑻𮀮𨡥𩱩𫡐𨑴𪀨𚐊𮀮𩡩𫁬𚁸𛡡𬡣𚁭𛁰𛁮𚰽𛠰𜐬𜀬𝰩𚑽`.replace(/u../g,'')))

Dec 7 2020 7:05 PM UTC

}// 139/140

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BEES!

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New_Core

function u(t) {

for(c.width|=i=9;i--;x.arc(X,Y,99,t,t+S(a*8)-1))x.fillStyle="#fa0",x.moveTo(X=960+800*C(a=t+i),Y=740-450*S((a/.8)%3.14))
x.fill()
x.stroke()

Nov 20 2018 8:27 AM UTC

}// 140/140

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crazy starving pacmans bouncing and having fun...

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WasifBoomz

function u(t) {

x.beginPath()
a=1920
x.moveTo(t*10,Math.random()*540)
x.lineTo(t*20*Math.random(),Math.random()*1080)
x.lineWidth=10
x.stroke()

Sep 22 2020 7:03 PM UTC

}// 127/140

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Delicious looking thing.

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Agnes

function u(t) {

with(x)t?(font='64px A',drawImage(c,4,4,w-q,h-q),fillText("👻",e=(e+w+q*S(R=Math.random()*6.3))%w,y=(y+h+q*C(R))%h)):(e=y=q=8,w=1920,h=1080)

Mar 8 2018 1:45 PM UTC

}// 139/140

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This looks way cooler if q=32 but I couldn't figure out how to fit that while retaining good % behaviour at the edges.

u/fons

so nice colors

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Ghoust

function u(t) {

h=999
t<1?Y=540:Y<0?Y=0:0;Y>h?Y=h:0;x.drawImage(c,9,0)
for(i=0;i<h;i++){x.fillStyle=R(g=Y-i,g,g)
x.fillRect(0,i,9,9)}Y+=Math.random()*90-45

May 3 2022 1:34 PM UTC

}// 140/140

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katkip

remix of d/11361 by u/katkip

function u(t) {

c.width*=1;x.lineWidth=9;for(i=40;i--;)for(j=40;j--;)x.beginPath(),x.ellipse(i*50,j*26,26,0,C(i)*S(j)*T(t),0,7),x.stroke();

Dec 9 2018 12:51 PM UTC

}// 123/140

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rodrigo.siqueira

remix of d/33838 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(1)`
for(i=3e4;i--;x.fillRect(960+r*C(k=i*i)*785/Z,r*S(k)*750/Z+540,.1,t<3))r=S(i)/C(i/t)-1,Z=r*C(1/S(r)+S(r)/2)+.5

May 26 2025 1:51 PM UTC

}// 137/140

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Cosmic tunnel

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donbright

remix of d/2839 by u/alien

function u(t) {

w=c.width=115
for(j=w;j--;)
for(i=w;i--;)q=2*i*j*S(t)+C(t)*(i**2+j**2),x.fillStyle=R(s=(q*q*frame>>t)%255,s,s*3),x.fillRect(i,j,1,1)

Jul 10 2017 3:22 AM UTC

}// 132/140

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remixing @alien color + code with some of my old binary quadratic forms stuff (aka circles and squares pseudo fractals)

u/cantelope

cool donbright
u/donbright

thx cantelope