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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GandalfUFR

function u(t) {

a=99;b=7;d=a-b;f=93*t;e=f*b/a;g=f*d/a
z=d*C(e)-b*5*C(g);y=d*S(e)+b*5*S(g)
for(i=0;i++<9;)x.fillRect(191*i+z,540+y,5,5);x.translate(8*S(f),0)

Apr 27 2019 2:36 PM UTC

}// 140/140

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Let's pixel it together ...

u/joeytwiddle

Sauron gave the Nine rings to powerful men. All of them fell under the rings' dominance, and they became the Nazgûl (Ringwraiths), spirits of terror whom Sauron could command.

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KilledByAPixel

remix of d/13416 by u/KilledByAPixel

function u(t) {

for(i=F=2e3;i--;x.fillRect(i,Y,2,99))k=S(i)**2+1,Y=k*(1e9+t*1e3)%F-1199+99/t,x.fillStyle=R(z=i%2?(999-i)**2+(500-Y)**2<6e4?F:0:99,z,z+30,.5)

Apr 23 2019 7:01 PM UTC

}// 140/140

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The moon shines bright through the rain tonight.

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GandalfUFR

function u(t) {

a=357;b=43;d=a-b;f=20*t;e=f*b/a;g=f*d/a
z=d*C(e)+b*5*C(g)
y=d*S(e)-b*5*S(g)
x.strokeStyle=R(127+128*S(2*t))
x.lineTo(960+z,540+y)
x.stroke()

Apr 27 2019 11:32 AM UTC

}// 140/140

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A glowing hypocycloid ... don't call it a donut ...

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rodrigo.siqueira

remix of d/13410 by u/katkip

function u(t) {

if(t<2){x.globalAlpha=.7
x.fillRect(0,0,1,1)
x.rotate(Math.PI*.8)
x.translate(-450,-700)
x.drawImage(c,0,0,1e3,1e3)
x.translate(-900,-310)}

Apr 23 2019 2:52 PM UTC

}// 139/140

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Starfield #fractal

u/katkip

Nice
u/sigveseb

Pretty af
u/Purpzie

Shortened by 5 characters: if(t<2)with(x)globalAlpha=.7,fillRect(0,0,1,1),rotate(Math.PI*.8),translate(-450,-700),drawImage(c,0,0,1e3,1e3),translate(-900,-310)

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akoskovacs

remix of d/10095 by u/d0n.key

function u(t) {

for(c.width=340,i=320;i--;x.font=7+C(j=t*9+(X+Y)/2)+'pt a',x.fillText(["🔴","⚪","✅"][Y/5|0],40+C(j)+X*14,18+S(j)+Y*12))Y=i%15,X=i>>4

Apr 24 2019 11:02 PM UTC

}// 131/140

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Bojler Eladó

u/LovelyRita

#flag

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GandalfUFR

function u(t) {

z=Math.random();for(i=0;i<6.3;i+=.03){
a=480*t*S(i);b=270*t*C(i);
x.fillStyle=`hsl(${360*z},99%,50%)`
x.fillText(t,960-a,540-b);x.rotate(t)}

Apr 27 2019 8:48 AM UTC

}// 140/140

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username

remix of d/13475 by u/username

function u(t) {

eval(unescape(escape`𬐽𨰮𪁥𪑧𪁴𧠽𫰽𙀽🡓𚀤🀼𭀩𚡃𚁴𚐪𜐴𜠫𜐹𜠻𩡯𬠨𩐽𜡥𜰻𩐭🐸𜀻𡡐𤰽𜠩𭱩𭁨𚁸𚑢𩑧𪑮𤁡𭁨𚁸𛡬👬𪑮𩑔𫰩𛁦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𥀨𭀩𚡥𯐬𞐹𙐬𞐥𨀬𫑯𭡥𥁯𚁥𛐨𭰽𫰨𩐩𚐬𬐩𛁬𚁥𛑷𛁱𛑷𚠲𚐬𫀨𩐭𭰯𜠬𬐭𭰪𜰩𛁬𚁥𛁱𛑷𚠲𚐬𩡩𫁬𚁬𚁥𛁱𚐩`.replace(/u../g,'')))

Apr 28 2019 7:58 AM UTC

}// 140/140

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city generator v4

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Jezza

remix of d/13473 by u/Jezza

function u(t) {

c.width|=X=Y=u=S(t)/9+.8
for(i=3e3;i--;x.fillRect(X*300+760,Y*300+600,2,2))T=.4-6/(1+X*X+Y*Y),Z=X,X=1+u*(Z*C(T)-Y*S(T)),Y=u*(Z*S(T)+Y*C(T))

Apr 26 2019 7:44 AM UTC

}// 140/140

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https://en.wikipedia.org/wiki/Ikeda_map u from .688 to .911

u/Xen

love it! i never got round to making one of these

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username

remix of d/13477 by u/username

function u(t) {

x.font=`9em'`;x.globalAlpha=.1
for(i=0;i<9;i++)[`🔴`,`⚪`,`⚫`,`🔵`].forEach(($,_)=>x.fillText($,866+i*C(t)*99,444+_*99+333*S(t)))

Apr 26 2019 5:02 PM UTC

}// 126/140

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username

remix of d/13401 by u/username

function u(t) {

eval(unescape(escape`𬐽𨰮𪁥𪑧𪁴𧠽𫰽𧰽🡍𨑴𪀮𬡡𫡤𫱭𚀩𚠱𝠸𚰹𞐻𩡯𬠨𩐽𜡥𜰻𩐭🐸𜀻𡡐𤰽𜠩𭱩𭁨𚁸𚑦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𥀨𭀩𚡥𯐬𝰱𙐬𝀲𙑠𛁭𫱶𩑔𫰨𩐭𚁷👯𚁢𩑧𪑮𤁡𭁨𚁸𛡬👬𪑮𩑔𫰩𚐩𛁱𚐬𫀨𩐭𭰬𬐭𭰪𜠩𛁬𚁥𛑷𛰲𛁱𛑷𚠳𚐬𫀨𩐬𬐭𭰪𜠩𛁦𪑬𫀨𫀨𩐬𬐩𚐻`.replace(/u../g,'')))

Apr 26 2019 6:56 AM UTC

}// 140/140

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random city generator v2