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.

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Current theme challenge: #Food

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katkip

remix of d/9439 by u/katkip

function u(t) {

if(!t){l=0;r=-1}while(l<108){x.fillStyle=`hsl(${C(r*r-t)<S(l*l+t)?50:25},99%,50%)`;x.fillRect(++r*10,l*10,10,10);if(r>190){l++;r=-1}}l=0

Aug 25 2018 7:59 PM UTC

}// 136/140

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VIsualizing C(r*r-t)<S(l*l+t)

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katkip

function u(t) {

for(i=0;i<9;i++){x.fillStyle='#fff';x.fillRect(0,S(t)*i*500,9,9);x.fillStyle='#000';x.fillRect(0,S(t)*i*255,9,5)}
x.drawImage(c,t,0)

Aug 25 2018 7:53 PM UTC

}// 132/140

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f8f82804

remix of d/9413 by u/f8f82804

function u(t) {

x.drawImage(c,-16,-10.2,1952,1100);x.font='218px a';t%1.1>.01||x.fillText('🛤',830,638)

Aug 25 2018 3:05 AM UTC

}// 86/140

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#android remix

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SnakeBearSoftware

remix of d/9448 by u/SnakeBearSoftware

function u(t) {

w=c.width^=0
for(i=1;i<50;i+=.11)x.stroke(),x.beginPath(),
x.arc(860+20*i*S(2*i),i*S(t)*20+520,2*(S(i)+1),0,6.28)

Aug 26 2018 2:29 PM UTC

}// 113/140

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SnakeBearSoftware

remix of d/9447 by u/SnakeBearSoftware

function u(t) {

w=c.width^=0
for(i=1;i<50;i+=.11)x.stroke(),x.beginPath(),
x.arc(860+20*i*S(2*i),i*S(t+i)*20+520,2*(S(i)+1),0,6.28)

Aug 26 2018 2:29 PM UTC

}// 115/140

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cantelope

function u(t) {

eval(unescape(escape`景爨砮晩汬剥捴⠰ⰰⱩ㵣⹷楤瑨㴹㘰Ⱪ⤬眽椯㈻椭ⴻ砮獴牯步却祬攽✣晦昧⥛ㄵⰰⰱ崮浡瀨欽㹻朽椭欬砮汩湥呯⡷⭓⡱㵧⼨栽ㄵ㈮㠩⭴⼳⤪⡚㵃⡰㵧⼲⸳㠷㌩⬵⤯⡚㵃⡱⤪娭㤩⩷Ⱘ匨瀩ⴳ⤯娪眩紩㭸⹳瑲潫攨⤻`.replace(/u(..)/g,"$1%")))

Aug 23 2018 2:56 AM UTC

}// 140/140

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u/iverjo

for(x.fillRect(0,0,i=c.width=960,i),w=i/2;i--;x.strokeStyle='#fff')[15,0,1].map(k=>{g=i-k,x.lineTo(w+S(q=g/(h=152.8)+t/3)*(Z=C(p=g/2.3873)+5)/(Z=C(q)*Z-9)*w,(S(p)-3)/Z*w)});x.stroke();

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f8f82804

remix of d/3840 by u/letsbreelhere

function u(t) {

c.width=400;x.font='2em α';x[f='fillText']([...'🌗🌘🌚🌒🌓🌔🌝🌖'][(1.3*t+.4)%8|0],200+C(t)*99,99+S(t)*50);x[f]([...'🌎🌏🌍'][t%3|0],200,99)

Aug 22 2018 6:04 PM UTC

}// 129/140

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#earth #moon #orbit #youarethesun

u/katkip

WOOW
u/d0n.key

But then it would always be full moon o.ô
u/d0n.key

nvm how do I delete a comment? :DD
u/f8f82804

@d0n.key See my remix for fixed lighting
u/aleamb

cool dweet!

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katkip

remix of d/9427 by u/katkip

function u(t) {

if(!t){l=0;r=-1}while(l<108){x.fillStyle=`hsl(${S(r+t)*r*5&C(l+t)*l*5},99%,50%)`;x.fillRect(++r*10,l*10,10,10);if(r>190){l++;r=-1}}l=0

Aug 25 2018 12:29 PM UTC

}// 134/140

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Pixel Universe

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katkip

remix of d/9425 by u/katkip

function u(t) {

if(!t){l=0;r=-1}while(l<22){x.fillStyle=`hsl(${r**r+t*25+l**l},99%,50%)`;x.fillRect(++r*50,l*50,50,50);if(r>38){l++;r=-1}}l=0

Aug 25 2018 12:11 PM UTC

}// 125/140

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Evolving

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katkip

remix of d/9423 by u/katkip

function u(t) {

if(!t){l=0;r=-1}while(l<22){x.fillStyle=`hsl(${S(r*l*t/100)*100},99%,50%)`;x.fillRect(++r*50,l*50,50,50);if(r>38){l++;r=-1}}l=0

Aug 25 2018 12:05 PM UTC

}// 127/140

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