Dwitter - javascript demos in 140 characters

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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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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ersagun

remix of d/18292 by u/ersagun

function u(t) {

if(!t)B=[-1,0,1,A=0],X=Y=700;z=frame;while(~z&1)z/=2;x.fillRect(X+=B[(A+=z&3)&3],Y-=B[~A&3],1,1)

Apr 16 2020 11:39 PM UTC

}// 96/140

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Dragon curve #fractal This is all I can golf.

u/ersagun

It may have an integer overflowing problem with the angle. I couldn't wait that long to confirm it.

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Cloud

function u(t) {

for(c.width|=i=11;i--;)a=((S(t)+1)*450),w=100*i-a,w=w>0?w:0,x.fillStyle=i%2?"#fff":"#000",x.fillRect(960-w/2,540-w/2,w,w)

Apr 17 2020 7:50 AM UTC

}// 121/140

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Idea: https://www.dwitter.net/d/18270

u/doughno

oh, nice

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rodrigo.siqueira

remix of d/18197 by u/KilledByAPixel

function u(t) {

c.style.filter=`sepia()invert(`
for(Y=X=j=1e4;j--;j%99||(T=Y=S(j)*2,R=X=C(t*j)))Y=Y*Y-X*X+(X=2*X*Y+R,T),x.fillRect(X*450+960,Y*450+700,.5,1)

Apr 15 2020 8:05 PM UTC

}// 140/140

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Lines of #Buddhabrot #mandelbrot #fractal

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KilledByAPixel

remix of d/18285 by u/KilledByAPixel

function u(t) {

for(i=s=540;i;)R=R*T--?R*R-Y*Y-(Y=2*R*Y+0.2,0.73):(x.fillRect(960+S*s,C*s+s,1,2,x.fillStyle=`hsl(${T*5} 99%50%`),Y=C=--i/270-1,T=99,S=t/9-2)

Apr 17 2020 5:53 AM UTC

}// 140/140

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Julia Set SlowDraw #Fractal #Julia

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pavel

function u(t) {

for(c.width|=f=g=>g(a=32*j**.5)*a*17,i=99;i--;x.fillText('💩',960-s/2-f(S),540+f(C)))j=(i-2*t%1)/99,s=75*Math.min(9*j,1,5-5*j),x.font=s+'px"'

Apr 16 2020 4:30 AM UTC

}// 140/140

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cazzolungo

function u(t) {

c.width=1920;x.fillStyle = "purple";for(i=0;i<99;i++){x.font="200px Arial";x.fillText("Sono su discord.",90,t<10?i*18*t:890)}

Apr 17 2020 3:47 PM UTC

}// 125/140

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Odog8

function u(t) {

eval(unescape(escape`潮捬楣欽昽㹻愽㌸㐰〻戽湥眠䅵摩潃潮瑥硴⠩㭟㵢⹣牥慴敂畦晥爨ㄬ愬愩㭤㵟⹧整䍨慮湥汄慴愨〩㭦潲⡥㵡㭥ⴭ㬩筤孥崽攥㉽㭦㵢⹣牥慴敂畦晥牓潵牣攨⤻昮扵晦敲㵟㭦⹣潮湥捴⡢⹤敳瑩湡瑩潮⤻昮獴慲琨⥽`.replace(/u(..)/g,'$1%')))

Apr 17 2020 3:44 PM UTC

}// 139/140

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Dog whistle! Click the screen to activate it for 1 second!

u/joeytwiddle

#audio

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doughno

function u(t) {

w=1920
h=1080
for(i=0;i<16;i++){
x.fillStyle=i%2?"#000":"#FFF"
s=(350+i*40)*C(t*1.5)-i*100
a=s+600
if(a>0)
x.fillRect((w-a)/2,(h-a)/2,a,a)
}

Apr 15 2020 12:54 AM UTC

}// 140/140

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u/sigveseb

Sweet
u/Xen

nice!

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doughno

function u(t) {

p=Math.PI
c.width=1920
L=200*S(t%p)
x.beginPath()
x.arc(960,540,400*S(t/2%(p/2))-L/2,0,2*p,0)
x.lineWidth=L
x.strokeStyle="#90F"
x.stroke()

Apr 18 2020 2:53 PM UTC

}// 139/140

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wish i had characers for a black bg

Show more comments…
u/13thptr

almost kinda golfed it c.width|=p=3.14;with(x)fillRect(0,0,2e3,2e3),beginPath(strokeStyle="#90F"),lineWidth=L=200*S(t%p),arc(960,540,400*S(t%p/2)-L/2,0,7,0),stroke()
u/doughno

well, thanks
u/doughno

c.width|=p=3.14;with(x)fillRect(0,0,2e3,2e3),beginPath(strokeStyle="#90F"),lineWidth=L=200*S(t%p),arc(960,540,400*S(t%p/2)-L/2,0,7),stroke()
u/doughno

i could remove 2 characters from your golf and it still works(?)
u/Xen

120: with(x)lineWidth=L=200*S(t),fillRect(!beginPath(strokeStyle="#90F"),!arc(960,540,400*S(t%3)-L/2,0,7),2e3,2e3),stroke()
u/13thptr

u/doughno : must be blind, I don't see the difference
u/13thptr

u/Xen : nice but it isn't exactly the same
u/doughno

u/13thptr : i just removed the last argument of arc() lmao