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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TGY

function u(t) {

eval(unescape(escape`𭀦𙠡𬰿𘑫🱩𛐭𞡫🀲🱪𛐭𞡫🀳🱩𚰫𞡪𚰫𞠨𪰽𪐽𪠽𜠬𬀽𦱝𛁣𛡷𪑤𭁨🐲𩐳𚐊𬰽𬀮𩡩𫁴𩑲𚁥🐾𩐮𪐽👩𙠦𩐮𪠽👪𚐮𫁥𫡧𭁨𒡰𛡰𭑳𪀨𮱩𛁪𯐩𒡸𛡦𪑬𫁒𩑣𭀨𪐪𞐬𞐪𪠬𞐬𞐩𒡯𫡫𩑹𭑰👥🐾𪰽𩐮𭱨𪑣𪀭𜰷`.replace(/u../g,'')))

Mar 27 2021 8:05 AM UTC

}// 122/140

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Tron game (use arrow keys). You'd better open it in new tab to prevent scrolling around

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MagicalMichael

function u(t) {

c.width=1920 // clear the canvas
x.beginPath()
x.arc(t*75, 500, 250, 500, 0 ,Math.PI * 2)
x.rect(t*100,100,1000,50,100)
x.stroke()

Mar 28 2021 9:26 PM UTC

}// 130/140

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First Dwitt

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MagicalMichael

function u(t) {

for(i=100,c.width|=0,q=1-2*t,a=999;i--;)x.fillRect((i*99+t*a/q)%1930,i*i%a,100,5)
x.translate(a,k=600)
x.rotate(2-t/q)
x.fillRect(-k,0,a,10)

Mar 28 2021 8:58 PM UTC

}// 140/140

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Made the shapes in the back more linear so it matches the universe of the traveller.

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pip123

function u(t) {

for(i=0;i<5;i++){
x.arc(t * 399, 500 +(i * 100)+ S(t) * 199 +(i * 500) , 700, 3, 2 * Math.PI)
x.stroke()}

Mar 28 2021 8:48 PM UTC

}// 106/140

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Makker1993

remix of d/22212 by u/Makker1993

function u(t) {

for(l=0;l<9;l++){i=Math.random(),k=i*10,q=i*16;for(;i<9;i++)b=i*t+S(k),x.fillStyle=R(t*q),x.fillRect(9+i*9*q+99,b*S(t)%b*i*S(t),t*S(t),4)}

Mar 28 2021 8:35 PM UTC

}// 139/140

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Makker1993

function u(t) {

for(i=0;i<9;i++)

b=i*t+Math.random()*100

x.fillStyle=R(10*t+50-b)
x.fillRect(40+i*100+S(t)*300,b*S(b/i)%b*i*T(S(t)*i^333),50,45)

Mar 28 2021 8:11 PM UTC

}// 133/140

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Lbniese

remix of d/12659 by u/katkip

function u(t) {

t||(X=Y=1);X+=S(t)+S(t*2);Y+=C(t)+C(t*2);x.fillRect(250+X*5,100+Y*5,9,9),x.rotate(8)

Mar 28 2021 7:45 PM UTC

}// 84/140

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Makker1993

remix of d/22206 by u/Makker1993

function u(t) {

x.fillStyle=R(10*t+50)
for(Z=-~t*2;Z--;)x.beginPath(),x.fill(x.arc(90*Z,T(Z+S(Z*t))*2*t/S(Z),40,0,S(Z)))

Mar 28 2021 7:44 PM UTC

}// 104/140

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Lbniese

remix of d/19649 by u/New_Core

function u(t) {

x.fillText(a=t%4<2?Array(c.width=99).fill().map($=>Math.random()*9|0):a,9,35)

Mar 28 2021 7:43 PM UTC

}// 77/140

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Makker1993

remix of d/21809 by u/rodrigo.siqueira

function u(t) {

c.width
x.fillStyle=R(5*t+10)
for(Z=-~t*2;Z--;)x.beginPath(),x.fill(x.arc(90*Z,T(Z+S(Z*t))*2*t/S(Z),40,0,S(Z)))

Mar 28 2021 7:37 PM UTC

}// 111/140

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