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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taupelink

remix of d/19507 by u/taupelink

function u(t) {

g=(x,y)=>S(x+y*y/9)*C(x+S(y));for(i=1e3;i--;)X=(r=Math.random)()*9,Y=r()*9,x.fillRect(X*220,Y*120,g(X,Y)*(T(X)>1?.6:5),g(9%Y,T(X^Y))>g(Y,X))

Jul 25 2020 3:49 PM UTC

}// 140/140

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d/19529

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danny@hille.dk

function u(t) {

c.width=90;for(Y=57;Y--;)for(X=99;X--;)a=Math.atan2(Y-24,X-45)+t/3,g=S(a*7)*200,x.fillStyle=R(g,0,99),x.fillRect(X,Y,1,1)

Jul 25 2020 3:23 AM UTC

}// 124/140

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Elbereth

function u(t) {

w=c.width/8;h=c.height/2;
p=T(t+2)*99;P=T(t)*10;
x.fillStyle=R(p,p/3,p,.05);
x.font=w+"px Arial";x.fillText("    riddle iv",P,h+P);

Jul 26 2020 1:43 AM UTC

}// 131/140

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2. hJx-3vKXv + sum princeps mane et finis noctium sed non sum sol

u/IV

oooh, haz i got a brazillian virus now?
u/IV

Riddle solved, The answer is me, during most of lockdown!

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Billedluh

remix of d/19505 by u/Billedluh

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👩🐱𒡦𫱲𚀻𪐼𜰹𞱩𚰫𚑻𒡔🐨𪐭𚁢👴𚠳𞐯𝐩𙐱𚐊𪠽𨠫𪑼𜀊𦀽𜐰𝐰𚱔𚠹𞐪𤰨𪠪𞐩𒡙🐹𜰰𛐹𜰪𥀫𥀪𥀪𝀊𪑦𚁩🐽𜐩𦀽𝐶𜀬𦐽𜐳𝀰𛁔🐵𜀬𪠽𜐳𒡦👥𭡡𫀨𘠧𧁜𭑻𜑆𞐢𚰨𪠥𜐱𧠶𜰩𚰢𯐧𘠩𒡸𛡦𫱮𭀽𥀫𜐫𘡥𫐧𘠊𮀮𩡩𫁬𥁥𮁴𚁦𛁘𛁙𚑽𞰻`.replace(/u../g,'')))

Jul 24 2020 6:57 PM UTC

}// 140/140

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Tasty_Box_Catalina

u/Billedluh

apparently apple has modified the Chinese takeout box emoji in the 12 years since I've rebooted my computer. This version looks better with most recent apple emojis

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rodrigo.siqueira

remix of d/19450 by u/katkip

function u(t) {

c.style='filter:invert(1'
for(A=a=b=i=1e4*(t<4);i--;a=S(b/7)*t+a/2+b*C(a/2)/3,b=b/2+S(A*4)/3,A=a)x.fillRect(a*6e3-2500,2e3-b*3e3,1,3/(1+t))

Jul 21 2020 2:00 PM UTC

}// 139/140

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Point of Impact #explosion

u/katkip

booom
u/DataMeta

whoa #waitforit
u/sigveseb

Worth the wait!

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taupelink

remix of d/19507 by u/taupelink

function u(t) {

g=(x,y)=>S(x*x+y*y)*C(T(9/y));for(i=1e3;i--;)X=(r=Math.random)()*4,Y=r()*3,x.fillRect(X*480,Y*360,g(X,Y-1)%g(X|0,Y|0-1),g(21/Y,15%X)>g(Y,X))

Jul 24 2020 5:51 PM UTC

}// 140/140

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d/19516

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danny@hille.dk

function u(t) {

c.width=450;for(Y=32;Y--;)for(X=50;X--;)x.fillStyle=R(99*(S(X-t+Y)+C(Y*64+t)+S(t+X+S(Y*16+t))),0,S(Y-t*9)*99+99),x.fillRect(X*9,Y*9,9,9)

Jul 25 2020 12:32 AM UTC

}// 136/140

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u/andrea270872

love the retro vibe! cool
u/ximavus

awesome and #underrated

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remix of d/2535 by u/magna

function u(t) {

t||(g=(n=c.cloneNode()).getContext`webgl`)
with(g)clearColor(0,S(t),C(t),1),clear(16384);
x.drawImage(n,0,0)

Jul 24 2020 5:14 AM UTC

}// 108/140

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safer for editing #webgl

u/IV

manga's original is grand, this is safer than my previous attempt in terms of editing and not getting errors which cause a reload :)
u/IV

the prblem with this is that youd have to clear both contexts which costs more bytes

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GreenBeans

function u(t) {

x.fillRect(0,0,2e3,2e3)
x.fillStyle=R(0,0,0,.04)
for(i=1;i<999;i++){x.clearRect(950+i*C(i-t),550+i*C(t+i),9,35)}

Jul 24 2020 6:00 PM UTC

}// 112/140

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remix of d/19470 by u/IV

function u(t) {

r=Math.random;s=r()*224;w=c.width/s;h=c.height/s;
for(i=1e2;i--;)
x.fillStyle=R(s,s*r(),0,r()/2),
x.fillRect(r()*w*s,r()*h*s,s,s);

Jul 24 2020 5:32 PM UTC

}// 131/140

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from monet to klimt