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

remix of d/7860 by u/prplz

function u(t) {

for(c.width|=i=9,x.translate(0,400);i--;)x.rotate(i*S(i*t)/100),x.fillRect(400+i*100+S(t)*300,S(9.42*S(t)+i%2*3.14)*30,50,200)

May 2 2018 10:56 AM UTC

}// 126/140

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Galloping default

u/Agnes

#default

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Agnes

function u(t) {

for(w=c.width|=i=9;i--;)x.rect(400+i*100+S(t)*300,400,50,200);x.clip();for(i=1e3,A=Math.random;i--;x.arc(w*A(),1080*A(),3*A(),0,7));x.fill()

Apr 25 2018 9:40 AM UTC

}// 140/140

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Noisy default

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Agnes

function u(t) {

w=c.width+=e=0;for(m=100;e<m;d=e++/m,s=30+20*C(t*d),x.fillStyle=R(m*(1+S(a=d*S(t*d)))),x.fillRect(0,0,s,s),x.translate(s,s),x.rotate(a));

Feb 8 2018 8:39 AM UTC

}// 137/140

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u/donbright

:)
u/katkip

Woooooow

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Agnes

function u(t) {

with(x)for(i=9,scale(m=t?1:100,m),drawImage(c,k=-.1,k,19.4,11);i--;)fillStyle=`hsl(${10*i*t},100%,50%`,fillRect(4+i+S(t)*3,4,.5,2);

Mar 14 2018 12:47 PM UTC

}// 131/140

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u/magna

On fire!
u/katkip

#default

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Agnes

function u(t) {

for(c.width|=A=(a,b)=>b+Math.random()*a,i=9e3,P='';i--;)P+=(P?'L':'M')+A(50,100*(4+~~(i/1e3)+S(t)))+' '+A(200,400);x.stroke(new Path2D(P))

Oct 10 2018 10:18 AM UTC

}// 138/140

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Vowen default #default

u/magna

Smart!

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Agnes

remix of d/8945 by u/firegodjr

function u(t) {

F=n=>{return C(n)*C(n)+S(n)*S(n)<1}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#0f0":"#000",x.fillRect(j*l,0,l,l)

Jul 28 2018 8:15 PM UTC

}// 130/140

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Visualising numbers for which sin(x)*sin(x) + cos(x)*cos(x) < 1.

u/donbright

wait wait wait wait wait.... sin^2 + cos^2 = 1. im so confused. is this about the imprecision of floating point arithmetic?
u/donbright

this is absolutely fascinating... set it ==1 or >1 gives different patterns.
u/donbright

also fun... return S(n)/C(n)==T(n)

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Agnes

remix of d/29734 by u/baon

function u(t) {

with(x)for(p=i=t>0.2?0:translate(960,540)|5e3,Y=0;i--;rotate(15.7/p),fillRect(0,540-Y,1,-Y))fillStyle=R(Y=Y+(Math.random()*2-1)*9)

Apr 5 2024 9:33 AM UTC

}// 130/140

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Gunshot

u/Xen

big!

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Agnes

function u(t) {

c.width|=A=t?A:[0]
R=(a)=>a*(.5-Math.random())
x.stroke(new Path2D("M960 540c"+(A=A.map(e=>e*.99)).join(" ")))
A.push(R(250))

Mar 6 2024 7:31 AM UTC

}// 125/140

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Autograph shrinking into a black hole #path2d (fixed version that can't roll a negative number for the first number)

u/Tesseract

Nice. .join(" ") is unnecessary since commas are allowed as separators in paths.
u/Agnes

Oh, interesting! The Mozilla documentation of SVG paths used commas for every other number for the C command so I didn't think you could use them everywhere.
u/lewdev

Change .join(" ") to .join` ` to reduce two characters.

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Agnes

remix of d/9653 by u/Agnes

function u(t) {

A=a=>a*Math.random();for(P='M960 540',i=Q=255;i--;P+='t'+(20-A(40))+' '+(20-A(40)));x.strokeStyle='#'+(A(1000)|0),x.stroke(new Path2D(P))

Sep 10 2018 10:18 PM UTC

}// 137/140

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Violent brush strokes

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Agnes

function u(t) {

A=t?A.filter(e=>((N=t-e.i)<5)|x.beginPath(x.fillStyle=R(T=51*N))|x.arc(e.x,e.y,T,0,7)|x.fill()):[];A.push({x:(M=t+t**t)%1920,y:M%1080,i:t})

Jul 16 2018 3:00 PM UTC

}// 139/140

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u/DataMeta

Verrrrry cool!

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