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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pavel

function u(t) {

for(j=t?1e3:a=b=0;j--;x.fillRect(960+450*a,540+450*b,1,1))s=Math.random()<.5?-1:1,A=(Math.hypot(a,++b)+a)/2,b=(b<0?-s:s)*(A-a)**.5,a=s*A**.5

Feb 13 2019 9:09 PM UTC

}// 140/140

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IFS #julia attractor for c=i. Play with adding different constants to a and b in the Math.hypot call

u/pavel

a+=.123,b+=.745 is called Douady's rabbit fractal
u/katkip

How! Amazing
u/13thptr

#fractal

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Agnes

function u(t) {

with(x)for(w=c.width=1920,i=100,translate(w/2,540);i--;r=w/i,rotate(T(t/30)),strokeRect(m=-r/2,m,r,r));

Mar 25 2018 4:46 PM UTC

}// 103/140

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(Looks way better in full screen.)

u/joeytwiddle

#tunnel #spiral #mercury #timeless #doctor_strange

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almcd

function u(t) {

x.beginPath();x.arc((10*t)*C(0.9*t)+c.width/2,(10*t)*S(0.9*t)+c.height/2,20,0,2*Math.PI);x.fill();

Oct 13 2018 9:07 AM UTC

}// 98/140

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Simple Spiral

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pavel

function u(t) {

for(w=i=c.width|=0,x.globalAlpha=.15;i--;x.fillText('❄',-4,-4))x.setTransform(s=i*i%63/7,0,0,s,(i+s*w/(1+9**C(t/3)))%w,(s/5*t+T(i*i))%2*600)

Dec 6 2020 4:36 AM UTC

}// 140/140

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Snowstorm

u/donbright

lovely
u/KilledByAPixel

#snowflake

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Citiral

remix of d/3693 by u/Citiral

function u(t) {

  c.width=1920;s=40;for(i=0;i<1920;i+=s){for(j=0;j<1080;j+=s){f=s*(S(1.5*t+i+j)+1.1)/2;x.fillRect(i+f,j+f,s-f*2,s-f*2)}}

Dec 26 2017 8:34 PM UTC

}// 120/140

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u/sigveseb

this looks nice!

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New_Core

remix of d/17083 by u/New_Core

function u(t) {

t?x.drawImage(c,0,a=t*60%6*T+T,T=2e3,T,0,0,T,T):c.height=14e3
x.font=3+"cm'"
for(b=i=40;i--;)x.fillText("🌍",t*(i+9)*30%T-b,i*b+a+b*S(t*5+i))

Jan 6 2020 9:50 AM UTC

}// 140/140

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u/Odog8

thats a looot of plastic

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KilledByAPixel

remix of d/15778 by u/KilledByAPixel

function u(t) {

for(I=O="";Q="𠒃񁔇񢖋񓗍񐇯򐃑񐙒򴵅򹋖񕷘󋢙򒭘󅪻󅮛󭫝򕠀".charCodeAt(I/2);O+=";for(c.width|=9-)xlRe40+*S3,52"[Q>>I++%2*5&31]);eval(O)

Sep 23 2019 7:22 PM UTC

}// 107/140

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4-1 compressed #default

u/tomxor

Reduced character set encoding :P I was literally thinking to do the same thing, also this is how some SMS txt compression standards work apparently.

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tzador

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐰𒡦𫱲𚁩🐹𞱩𛐭𞰩𩡯𬠨𪠽𜀻𥠽𚀴𛠵𚰴𛠵𚡓𚁴𛰳𚠨𪐪𪐫𜐰𚐩𚐪𣑡𭁨𛡭𪑮𚀱𛀴𛰨𜐫𚁩𛐴𛠵𚐪𚠲𚐩𛁪🁖𞱪𚰫𚐊𮀮𩡩𫁬𤱴𮑬𩐽𘡨𬱬𚀢𚱪𚠸𚰢𛀶𜀥𛀵𜀥𚐢𛀊𮀮𩡩𫁬𤡥𨱴𚀴𜀰𚱩𚠶𜀬𞐵𜀭𜐰𞐪𪠬𝐰𛀹𞐩`.replace(/uD./g,"")))

Feb 12 2025 12:18 PM UTC

}// 128/140

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lionleaf

remix of d/41 by u/lionleaf

function u(t) {

c.width=2e3;for(i=0;s=300,a=s/(s-(t+i*s/900)%s),i<900;i++){x.strokeRect(999-a*(1+S(t))/2,500-a*(1+C(t*2))/2,a,a)} //Redweet of an old tunnel

Feb 22 2017 2:15 AM UTC

}// 140/140

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#tunnel

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tomxor

remix of d/15526 by u/mildlybean

function u(t) {

t*=2,Z=_=>C(3*S(Y)**2+3*S(X+t)*S(Y+X-t))**4/3
for(c.width=i=1024;i-=1/16;x.fillRect(48*(X*2+Y+11),48*(X/2-Y+z),1,5))z=6-Z(X=i%8-4,Y=i/128-4)

Aug 27 2019 8:22 AM UTC

}// 140/140

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Had been keeping this function around for a while but no use for it, it's just strange.

u/tomxor

... each blob doesn't actually propagate, but gives the illusion it does.
u/katkip

looks great
u/katkip

#waves