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) {

c.width|=M=n=>n+(Math.random()-.5)/100;q=q.map(e=>M(e));x.setTransform(...q);x.fillRect(100,100,1720,880);}{q=[1,0,0,1,0,0];

May 10 2018 8:43 AM UTC

}// 124/140

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Did you know only one and a half browsers implement x.currentTransform?

u/PiggyClone205

What's the half browser?
u/Agnes

Chrome, which only supports it if you turn on a debug flag.

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Agnes

function u(t) {

A=a=>Math.random()*a;q=i=0;B=t?B.map(a=>x.fillRect(960+(h=300+A(i++))*S(m=t/10-a+A(a-q)),540+h*C(m+(!(q=a))),3,3)|m):[];i<99?B.push(t/8):0;

Apr 24 2018 10:31 AM UTC

}// 139/140

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Rings of dust

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Agnes

remix of d/7684 by u/Agnes

function u(t) {

with(x)for(c.width|=i=15;i-->1;)for(j=5;j--;beginPath(),arc(960,540,150+25*i,o=i*t-3/j,6.3/j+o),lineWidth=2*j+5,strokeStyle=R(40*j))stroke()

Apr 16 2018 11:01 AM UTC

}// 140/140

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Turns out approximations of pi are fine if you're not multiplying with your bad approximation of pi.

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Agnes

function u(t) {

with(x)for(c.width|=i=M=400;i--;j=i%20,o=i/20,j==19&&beginPath(),lineWidth=5,lineTo(e=M+56*o+10*S(A=i+t),y=200+34*j+10*C(A)),!j|stroke());

Apr 13 2018 11:05 AM UTC

}// 138/140

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Half-assed attempt at Bees and Bombs' curtain thing. Done better by u/BalintCsala

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Agnes

function u(t) {

for(i=10,x.font="64px A";i--;e=960*(1+S(8*i+t/15)),y=540*(1+S(13*i+t/32)),x.clearRect(e-10,y+10,!i*94,!i*-84),x.fillText(!i?"🚒":"⛸️",e,y));

Apr 6 2018 11:21 AM UTC

}// 139/140

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Zamboni simulator. Numbers were chosen to work with Chrome emojis. Probably breaks with any other set of emojis; sorry about that.

u/Agnes

Just realised there may be a way cooler way to do this with shadowBlur.

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Agnes

function u(t) {

with(x)for(w=c.width=1920,i=500,translate(w/2,540);i--;r=w/i,rotate(T(t/75)),strokeStyle='#'+5*i,strokeRect(m=-r/2,m,r,r));

Mar 25 2018 5:08 PM UTC

}// 123/140

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(Also looks way better in full screen.)

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Agnes

function u(t) {

for(w=W=c.width=c.height=200;w--;)for(h=W;h--;)x.fillRect(w,h,(1+S(w*h))/2,C(t*Math.atan2(w*S(t),h*C(t))));

Mar 19 2018 12:36 PM UTC

}// 107/140

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u/magna

Very nice!

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Agnes

function u(t) {

q=5*(1+C(t));for(i=c.width=c.height=100;i--;)for(j=100;j--;)with(x)fillStyle=`hsl(${q*t*(i+1)*(j+1)},50%,50%)`,fillRect(i-q,j-q,2*q,2*q);;

Mar 1 2018 10:06 AM UTC

}// 138/140

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Agnes

function u(t) {

H=n=>S(n*(i=Math.PI));R=Math.random;q=H(e=R());with(x)globalAlpha=p=H(y=R()),beginPath(),fill(arc(1920*e,1080*y,30*q*p,0,2*i));

Feb 13 2018 10:39 AM UTC

}// 127/140

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Agnes

function u(t) {

s=30;w=c.width+=e=0;for(;e<w;d=e/w,m=s*(1+d*C(t*d)),x.fillStyle=`hsl(${255*m/s},50%,${70*d}%)`,x.fillRect(e,540+10*S(d*t),m,m),e+=m>1?m:1);

Feb 7 2018 6:11 PM UTC

}// 139/140

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