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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rodrigo.siqueira

function u(t) {

for(i=470;i--;c.style.filter=`invert(`)
f=t/3%6.28,
X=S(f-4)*i,
Y=C(f-4)*i,
x.fillRect(960+X,540+Y,1,1),
x.fillStyle=R(k=f*45+S(X*Y)*99,k,k)

Feb 14 2022 1:04 AM UTC

}// 140/140

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Noise over the gradient circle. Based on the cover art of the book "Imaginários Tecnocientíficos" (design by Carol Ohashi). Moiré patterns can be seen in the first circle. Wait for the second round to complete.

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taupelink

remix of d/24912 by u/taupelink

function u(t) {

eval(unescape(escape`砮獴牯步却祬攽✣㌰㘧㭦潲⡭㵫㴵㐰㭺㵴⼴⨪琬洭ⴾㄯ稻砮晩汬⡸⹳瑲潫攨⤩⥸⹦楬汓瑹汥㵒⡫⽴ⱭⱫ⩺⤬砮扥杩湐慴栨砮汩湥坩摴栽洪稪稩ⱸ⹡牣⠹㘰⵫⩓⡭⵺⼶⤬欪⠱⭃⡭⩭⵴┱⼹⤫稯琩Ɑ⩺ⱺⰴ⤠`.replace(/u([^D].)/g,'$1%')))

Feb 13 2022 10:23 PM UTC

}// 140/140

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d/24919

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rodrigo.siqueira

remix of d/24904 by u/rodrigo.siqueira

function u(t) {

with(x)for(i=900;i--;fillRect(~setTransform(s=i,0,0,s,960+i/t+3*s*S(i-t/2),560+2*s*C(i/40-t*2.5)),+~rotate(i/5),2,2))fillStyle=R(i,i/3,0,.2)

Feb 11 2022 3:12 AM UTC

}// 140/140

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Ethereal creature

u/rodrigo.siqueira

Misty mountain fog #smoke
u/magna

Or fire dragon tongue
u/jellyedwards

So cool!

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jokedotcom

function u(t) {

c.width=j=1920,s='🟩🐈🐝🧸🐖🦀🦐🟩🐠🐉🦜🐜🐩🦆🐀🐏',x.font='3em"';for(i=j/5;--i;x.fillText(s[k=i%16*2]+s[k+1],(i*5+(l=1+i%13)*t*15)%j,(l*t*60+T(i)*540)%j));

Feb 13 2022 4:58 PM UTC

}// 140/140

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it's raining cats and dogs

u/joeytwiddle

it's raining ducks and fish

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jokedotcom

function u(t) {

c.width=j=1920;for(i=j;--i;x.fillStyle=R(g=S(i**2)*180,g,g))x.fillRect(i,((1+i%13)*t*90+T(i)*540)%j,i%4,i%99);

Feb 13 2022 1:06 AM UTC

}// 110/140

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it feels a bit rainy today :)

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atgz

remix of d/24891 by u/rodrigo.siqueira

function u(t) {

with(x)for(i=999;i--;fillRect(~setTransform(s=6e4/i,0,0,s,999+7*s*C(F=i),360+i+3*s*S(F+S(t+i)/3)),~rotate(i/5),2,2))fillStyle=R(i*t/3.1%111)

Feb 14 2022 10:16 AM UTC

}// 140/140

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Schlichtsova

function u(t) {

with(x)for(i=999;i--;fillRect(~setTransform(s=i,1,10,s,1000+i/t+6*s*S(i-t/1000),460+1*s*C(-t*10))
,+~rotate(i/5),0.1,10))fillStyle=R(i,i)

Feb 11 2022 10:26 AM UTC

}// 137/140

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magnety

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rodrigo.siqueira

remix of d/18597 by u/pavel

function u(t) {

with(x)for(i=999;i--;fillRect(~setTransform(s=2e4/i,0,0,s,940+7*s*C(F=i+t/4),380+i+3*s*S(F+S(t+i)/3)),~rotate(i/5),2,2))fillStyle=R(i/2,i/6)

Feb 8 2022 7:21 PM UTC

}// 140/140

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Melting lava #cavern

u/ciaccodavide

nice!
u/Xen

love it!
u/aleamb

amazing

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rodrigo.siqueira

remix of d/24902 by u/rodrigo.siqueira

function u(t) {

with(x)for(i=999;i--;fillRect(~setTransform(s=1e4/i,0,0,s,630+i%2*710+9*s*C(F=i*t),540+s*S(F)*3),C(i/6+t)*4,G=1/t,G))fillStyle=R(9,i/2,i,.3)

Feb 10 2022 12:36 PM UTC

}// 140/140

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Stardust formation

u/magna

#waitforit

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rep_movsd

function u(t) {

eval(unescape(escape`𭱩𭁨𚁍𨑴𪀩𩡯𬠨𦠽𜐰𝐬𣀽𬠽🡲𚡓𚁡𨱯𬰨𦀯𬠩𚐬𣐽𩑸𬀨𨐽𭀭𜰩𛁘🐭𚁋👴🀮𜠿𝀵𞡡🀵🰨𜐫𣐪𜠯𚁍𚱥𮁰𚀭𨐩𚐩𚠳𝐺𦠪𠰨𚀵𛑡𚐪𚠷𚐩𞱘🁋𞰫𚱘𚑸𛡦𪑬𫁓𭁹𫁥👒𚁚𚠲𚠨𭀾𝀮𝰩𛁋𛀰𛀨𣀨𢰩𛑌𚁋𚠮𝰩𚐯𢰩𛁸𛡦𪑬𫁒𩑣𭀨𜰶𜀫𦀬𭀪𦠫𦠬𜐬𜰩`.replace(/u../g,'')))

Feb 9 2022 12:48 PM UTC

}// 139/140

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Orange juice

u/rep_movsd

#waitforit #stilllife
u/KilledByAPixel

nice! i did one a little like this https://www.dwitter.net/d/18008
u/rep_movsd

I had to munge the formula that calculate show much glass the light passes through.
u/rep_movsd

I am doing an fxhash with the better formula it looks more realistic
u/vain

amzing! cheers