Top dweets by u/Agnes

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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Agnes

function u(t) {

W=t?W:"";
S=(Math.random() + 1).toString(36).substring(2,3+W.length)
Q=[]
for(e in c){Q.push(e)}
Q.forEach(e=>e.includes(S)?W=S:0)
throw(W)

Nov 17 2023 1:46 PM UTC

}// 139/140

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Substring explorer

u/Agnes

Every frame, this tries to find a random substring of length L that appears somewhere in the member variables of the Javascript canvas object c. If it finds a match, L is increased by one.
u/Agnes

I think this crashes if W.length gets too long but I don't think it's ever going to get much further than 5 in the lifetime of the universe so we're fine.

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Agnes

function u(t) {

with(x)for(strokeStyle=`hsla(${i=Q=10*t},99%,50%,.1)`;--i>0;Math.random()>.5?beginPath(stroke()):lineTo(960+M*S(N=i+Q+t),540+M*C(N)))M=i+Q

Nov 8 2022 12:03 PM UTC

}// 138/140

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Spun tunnel (spunnel)

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Agnes

function u(t) {

for(W=c.width|=i=12,x.font="64px A";i--;I=S(i),I=I>0?I:-I,x.fillText(i>1?"🦟":i?"🏹":"⌚",i>1?(t*600*I)%W:W/2,1000-100*i+(i==1?5*S(5*t):0)));

Jul 1 2021 9:53 AM UTC

}// 138/140

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#time flies like an arrow

u/pavel

Fruit flies like a bananna
u/GreyHope

That was rather funny

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Agnes

function u(t) {

M=1e4;(A=t?A:[...Array(M).keys()].map(e=>10*Math.random())).map(a=>x.translate(S(a*t)/M,C(a*t)/M--));x.lineTo(960,540);x.stroke();

May 3 2021 5:01 PM UTC

}// 130/140

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Random "discrete" ""Fourier"" """transform"""

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Agnes

remix of d/22617 by u/Agnes

function u(t) {

for(q=100;--q;Q=t?Q+`l ${e} ${f}`:"M 960 540")l=t?l+(e*e+f*f)**.5:0,e=3*S(a=l**t*q),f=3*C(a);x.strokeStyle='#0000'+l,x.stroke(new Path2D(Q))

Apr 25 2021 12:44 PM UTC

}// 140/140

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Slightly more artistic seahorse pattern

u/Agnes

This one also stopped drawing patterns for me after I restarted my PC. :(

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Agnes

remix of d/9934 by u/anotherkitten

function u(t) {

c.style.background=R();if(t<34)with(x){shadowColor=`hsl(${t*99},76%,66%)`
shadowBlur=19
fillRect(9,9,9,9)
translate(25,8)
rotate(t*2.10587)}

Sep 20 2018 7:18 PM UTC

}// 140/140

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Same as the remixed dweet, except the HSL works on iOS Safari.

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Agnes

function u(t) {

A=a=>Math.random()*a;for(P='M960 540',i=500;i--;P+='l'+(15-A(30))+' '+(15-A(30)));x.fillStyle=R(A(Q=255),A(Q),A(Q),.1),x.fill(new Path2D(P))

Sep 3 2018 6:10 PM UTC

}// 140/140

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Pastel

u/katkip

Nice

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Agnes

function u(t) {

for(c.width|=i=2;i--;)for(j=2;j--;)x.fillStyle=(j%2?'hsl(':'hsla(')+'0,100%,50%,.25'+(i%2?')':''),x.fillRect(X=960*i,Y=540*j,958,537)

Aug 8 2018 11:27 AM UTC

}// 133/140

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HSL compatibility tester: depending on how your strict your browser is, one to four of these squares will be pink (technically translucent red).

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Agnes

remix of d/8938 by u/Xen

function u(t) {

with(x)for(filter='invert(5%)',drawImage(c,-5,-5,1930,1090),i=9;i--;)for(j=4;j--;)fillRect(400+i*99+S(t)*300-T(j*t),400+j*50+T(t*i),50,50);

Jul 27 2018 10:34 AM UTC

}// 139/140

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Glitching through the fog (feat. terrible performance)

u/Agnes

This apparently doesn't work on some browsers.

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Agnes

function u(t) {

i=new Image();u=[...c.toDataURL()];for(j=1+~~t*100;j--;u[~~(Math.random()*u.length)]="a");i.src=u.join("");i.onload=()=>x.drawImage(i,0,0);

Jun 5 2018 11:57 AM UTC

}// 139/140

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Corrupting PNG data. There's probably a dweet out there that does exactly this already, because I stole the idea from the Github wiki.

u/Agnes

#png #toDataURL #glitch

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