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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KilledByAPixel

remix of d/22081 by u/KilledByAPixel

function u(t) {

for($=1e4;--$;)x.fillRect(X+=C(a+=++i|n),Y+=S(a),1,.1)}{n=Date.now(a=i=X=Y=540)

Mar 26 2021 2:41 AM UTC

}// 79/140

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Tiny Sketcher - Produces a wide variety of abstract art in grayscale

u/Xen

nice!
u/KilledByAPixel

Reload to start with a new seed :)

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taupelink

remix of d/22145 by u/danny@hille.dk

function u(t) {

r=(k=255)=>Math.random()*k;for(i=99;i--;){X=r(1920);Y=r(1080);w=r();h=r();x.fillStyle=R(X/w*9,Y/h*16,r()*(h<w));x.fillRect(X,Y,w/t,h/t)}

Mar 26 2021 2:38 AM UTC

}// 136/140

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d/22149

u/taupelink

To u/danny@hille.dk: Not sure whether this is the kind of thing you had in mind. I figure there's no harm in dweeting though :) Thanks.
u/taupelink

In fact, re-reading the rules, I think this dweet is out of contention, since it doesn't create definite shapes. Carry on!
u/danny@hille.dk

I think it's great!
u/taupelink

Thank you! (I guess there are still rectangles, just small ones)

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Ulla62

function u(t) {

x.fillStyle=R(3*S(t)*120);
for(i=0;i<400;i++)
x.fillRect(100+i*S(t)*20,1,T(t),2500)

Mar 27 2021 8:09 AM UTC

}// 83/140

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BackendForth

function u(t) {

c.width|=0
for(i=192;i--;)
for(j=0;j<9;j++){
x.fillStyle=R(0,0,j*29)
x.fillRect(i*10,111*1.27**j+S(t*j*j/4+i/9+j)*5.7*j,10,399)}

Mar 25 2021 11:23 PM UTC

}// 128/140

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robotman_

function u(t) {

for(c.width^=i=0;i<6;i++)for(j=0;j<20+5*i;j++)x.fillRect(960+C(a=(r=t+j/(7+i)+i)+S(i+r/2))*(w=100+70*i),540+S(a)*w,9,9)

Mar 26 2021 3:24 PM UTC

}// 119/140

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Inspired by https://traffic-simulation.de/ring.html

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Xen

function u(t) {

for(c.width|=i=z=499;i--;)x.fillRect(z+i%9*99+S(t)*z,z+(i&9**C(t+i)*t%z),50,9)

Mar 25 2021 4:05 PM UTC

}// 78/140

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#Default #DNA

u/danny@hille.dk

i think there is some mutation going on :-)

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danny@hille.dk

remix of d/22145 by u/danny@hille.dk

function u(t) {

with(x)save(m=a=>Math.random()*a),translate(m(w=2e3),m(w)),fillStyle=`hsl(${m(w)},99%,50%,.3`,rotate(m(6)),fillRect(0,0,m(99),w),restore()

Mar 25 2021 9:10 PM UTC

}// 140/140

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danny@hille.dk

function u(t) {

for(t*3%5>3?c.width|=0:0,w=Y=44;Y--;)for(X=w;X--;)(Y%2+X)%2&&Math.random()>.1||x.fillRect(X*w,Y*w,w,w)

Mar 24 2021 8:55 PM UTC

}// 102/140

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I've pondering this idea, for the last couple of days, but It's way less interesting than I've expected:-)

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pip123

remix of d/22170 by u/pip123

function u(t) {

x.arc(t * 199, 500 + S(t) * 155 , 300, 0, 2 * Math.PI)
x.stroke()

Mar 27 2021 7:27 PM UTC

}// 66/140

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pip123

function u(t) {

x.arc(10 + t * 200, 10 +  S(t) * 580, 300, 1, 2 * Math.PI)
x.stroke()

Mar 27 2021 7:07 PM UTC

}// 69/140

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