Dweets awesomed by u/veubeke

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: #Opposites

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New_Core

function u(t) {

x.font='6cm a'
for(i=7-~~t%8;i--;)x.beginPath(),x.setTransform(C(a=i/1.1+t)*2,S(a)*2,S(a)*2,-C(a)*2,960,540),x.fillText("🍕",-40,-30)

Apr 22 2020 2:09 PM UTC

}// 132/140

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the best circles are served warm #circlechallenge

u/donbright

lol

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veubeke

function u(t) {

with(x){for(beginPath(i=2),font='8em"';i--;fillStyle='#fff')
arc(960,540,i*800+300,0,Math.PI*2,i)
fill()
fillText('🚗',960+S(t)*500,850-t*2)}

Apr 22 2020 12:11 PM UTC

}// 140/140

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Because I can. #circlechallenge

u/sigveseb

Haha nice :D
u/donbright

haha

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Xen

function u(t) {

t<19?x.fillText(x.drawImage(c,C(t*t),S(t*t)),860,540):0

Apr 22 2020 11:04 AM UTC

}// 55/140

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#circlechallenge

u/joeytwiddle

Typical Xen dweet: indescribable!

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veubeke

remix of d/18403 by u/BriSeven

function u(t) {

t?(A=X+C(R=Math.random()*99)*10)*A+(B=Y+S(R)*10)*B<9e4&&(X=A,Y=B):X=Y=0
x.fillStyle=`hsl(${t*6},50%,50%)`
x.fillRect(X+960,Y+540,10,10)

Apr 22 2020 10:12 AM UTC

}// 135/140

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Random Walk #circlechallenge

u/donbright

absolutely fascinating...
u/donbright

i let it run for an hour or two and it filled up almost the whole circle, its very interesting

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veubeke

function u(t) {

X=Math.random()*1920
Y=Math.random()*1080
D=Math.hypot(X-960,Y-540)
if(D<300){
x.beginPath()
x.arc(X,Y,Math.min(300-D,20),0,7,0)
x.fill()
}

Apr 22 2020 7:29 AM UTC

}// 139/140

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#circlechallenge

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KilledByAPixel

remix of d/18406 by u/KilledByAPixel

function u(t) {

for(c.width|=i=z=1001;i--;)
x.arc(z,540,500,q=S(i*Math.PI*99/1e3+t/z)*t+1.57,q)
x.fill()

Apr 22 2020 4:56 AM UTC

}// 88/140

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u/KilledByAPixel

#waitforit
u/ersagun

#circlechallenge
u/joeytwiddle

One of the best examples of this effect IMO #trippy
u/donbright

oh my gourd

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KilledByAPixel

function u(t) {

with(x)c.width|=0,
fill(arc(960,520+S(t)*49,300,0,7)),
beginPath(filter=`blur(${4-S(t)}em`),
fill(ellipse(960,900,290,60,0,0,7))

Apr 22 2020 4:34 AM UTC

}// 128/140

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⬤ #circlechallenge

u/SockTaters

it's so ominous

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iznax

function u(t) {

for(i=400;i--;)with(c[i]=t?c[i]:{X:i/7,Y:i,h:5,y:7}){X+=h,Y+=y
M=X*X+Y*Y
D=M>16e4?(X*h+Y*y)*2/M:0
h-=X*D
y-=Y*D
x.fillRect(960+X,540+Y,9,9)}

Apr 22 2020 4:00 AM UTC

}// 140/140

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Do Light Rays Bouncing In A Circle Qualify? #circlechallenge

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BriSeven

function u(t) {

X=(t%1)*600-300,Y=t*10-300
if(Math.sqrt(X*X+Y*Y)<300)x.fillRect(X+950,Y+540,10,10)

Apr 22 2020 2:49 AM UTC

}// 82/140

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#circlechallenge

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veubeke

function u(t) {

x.fillRect(960,540,C(t)*300,S(t)*300)

Apr 21 2020 4:40 AM UTC

}// 37/140

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How are you drawing circles?

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