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

remix of d/9238 by u/Xen

function u(t) {

for(i=2e3;i--;x.fillRect(i,500+500*S(i/199+C(i*t/200)-S(t)*t),t+25,t+25))x.fillStyle=`hsla(${i/t+t},90%,30%,.01)`

Aug 15 2018 7:40 AM UTC

}// 113/140

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hamptonio

function u(t) {

c.width=2e3;q=y=.1;z=C(t);for(i=0;i<9e3;i++){q+=.2*(y-.15*S(3*q))-q/1e3;y+=(q-y+z)*.04;z+=-.28*y;x.lineTo(q*300+900,y*800+400);}x.stroke()

Feb 26 2017 7:20 PM UTC

}// 138/140

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A Chua circuit-like ODE with chaotic attractors

u/donbright

brilliant!

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yonatan

function u(t) {

t?f=frame:w=c.width=568
for(X=w;X--;x.fillRect(X,320-f,1,.3-m))for(v=f/320+.4,u=X/w*2-1,i=33;i--;v=b**.5/m-.1)a=m=u*u,m+=b=v*v,u=a**.5/m-.2

Nov 8 2018 9:52 PM UTC

}// 140/140

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Unreal mountain - ported from https://www.shadertoy.com/view/MtVfzR

u/magna

Wow!
u/katkip

Indeed wow!
u/iverjo

Impressive #fractal

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rpearl

function u(t) {

for(i=v=540,j=50,x[r='fillRect'](0,0,v*4,v*4);i--;)x[r](960+C(a=i*3.883)*i,v+S(a)*i,9,9,x.fillStyle=`hsl(${h=t*i},99%,${j*S(h/j)}%)`)

Mar 10 2017 11:21 PM UTC

}// 133/140

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I'm mostly just obsessively golfing the one cool demo I did and using the excess characters to add cool things... I should figure out more demos

u/donbright

this is joyous
u/FireFly

It's super pretty!
u/sigveseb

Super stylish!

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patavinas

function u(t) {

r=(a)=>Math.random()*a|0+1
x.fillRect(0,0,2e4,2e4),FPS=r(7)
x.font="9in'"
x.fillText(String.fromCodePoint(128511+r(56)),500,900)

Jan 13 2023 11:44 PM UTC

}// 129/140

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emoji TV

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iznax

function u(t) {

eval(unescape(escape`𪠽𤰨𭀪𜠥𜐪𜰩𚠪𞐪𚁴𙐴🠳🰸𝀺𜐶𚐊𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𜀬𩡯𫡴🐢𜠰𨱭𙰢𛁦𪑬𫁒𩑣𭀨𜀬𜀬𜡥𜰬𜡥𜰩𛁦𪑬𫁔𩑸𭀨𘡜𭑻𜑦𝀶𩡽𘠬𝀷𜀬𞐵𜀭𪠩𛁩🐴𞱩𛐭𞱦𪑬𫁒𩑣𭀨𝠲𜀫𪐪𜠴𚠶𚰨𪐾𜐩𚠸𜀬𞐳𝐭𪠫𪰬𝐪𜠸𛀲𚠶𜀭𪰩𚑫👓𚁴𚠸𚱩𚐪𚠲𚠶𝀻`.replace(/u../g,'')))

Apr 16 2020 4:28 AM UTC

}// 140/140

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Irish #Dancing

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coudy.one

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 */

Mar 7 2017 2:49 PM UTC

}// 122/140

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FrenchToast

function u(t) {

for(i=2;i<200;i++){
x.fillStyle = R(0,0,(i^2)%255);
x.fillRect(1920/2+S(i*t)*1920/2,1080/2+C(1.5*t)*1080/2,10,10)
}

Dec 29 2017 9:38 PM UTC

}// 115/140

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KilledByAPixel

remix of d/34145 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟝨󟜲󜌊󥌽󭌥󝌯󜬊󮬽󜼰󜌊󩭯󬬨󪼽󜜸󞽫󛜭󞽸󛭦󪝬󫍒󩝣󭌨󝌵󜌭󠼨󭌩󚭺󚼊󚍔󟌱󟽩󚽪󚭔󞬨󪬿󪜫󬜺󜜭󥌩󚜪󞜹󛌮󛬮󥌼󜜿󦽺󚼨󪬿󜬰󜌺󮜩󛌵󜌬󪬿󮜺󜬰󜌭󮝝󞭛󮬫󩬫󮜪󪬬󝜰󛍪󟼨󞌫󥌩󚭨󞬨󜬰󜌭󪌩󚭱󧜩󚝩󟝫󙜹󛍪󟝫󟬸󛍹󟝩󚭨󚽨󛍱󟜲󛝔󛍦󟝨󚭱`.replace(/u../g,'')))

Jul 21 2025 5:34 PM UTC

}// 138/140

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Disappearing #Default ✨

u/ximavus

SPOILER ALERT!!!!!!!!
u/ximavus

I found the trick the not dissapearing bars are getting taller

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tyaglot

function u(t) {

c.width=1920; 
  for(i=0;i<90;i++){
  x.fillRect(-400+i*40+S(t)*300, 400+S(i+S(t)*6)*100, 15, 200)
x.fillStyle=R(125+S(i*3)*100,233,45)
}

Aug 27 2017 12:53 PM UTC

}// 137/140

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