Top #circlechallenge dweets

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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katkip

function u(t) {

if(!t){c.width=500;x.translate(244,140)};for(i=9;i--;)x.fillRect(i*10,(5*t)%20,5,20);x.rotate(1)

Apr 23 2020 1:11 PM UTC

}// 96/140

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#circlechallenge made by default

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ersagun

remix of d/18381 by u/Xen

function u(t) {

t?x.transform(z=C(d=Math.PI*4/(5**.5+1)),Z=S(d),-Z,z,0,!x.fillRect(0,0,.5,399)):x.translate(960,540)

Apr 23 2020 12:55 PM UTC

}// 100/140

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#circlechallenge let's sprinkle a little phi in the mix

u/Xen

nicely done

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DataMeta

function u(t) {

t||(r=0),r=(5*r+1)%256,x.beginPath(x.stroke()),x.arc(960,540,r,0,7)

Apr 22 2020 7:20 PM UTC

}// 67/140

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#circlechallenge using a Linear Congruential Pseudo-RNG

u/DataMeta

64 bytes: t?r=(5*r+1)%256:r=0,x.beginPath(x.stroke()),x.arc(960,540,r,0,7)

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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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ersagun

remix of d/18371 by u/BriSeven

function u(t) {

x.fillStyle=R(0,0,0,1-(X=C(t**1.2))*X-(Y=C(t**1.1))*Y)
x.fillRect(960+X*200,540+Y*200,5,5)

Apr 21 2020 10:30 PM UTC

}// 90/140

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u/BriSeven

#circlechallenge
u/donbright

now thats a use of fillstyle i have never seen before

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NiekvD

remix of d/26695 by u/NiekvD

function u(t) {

s=20
for(i=96;i--;){
  for(j=54;j--;){
      a=i-48
      b=j-27
      if(eval(a*a+b*b<300))x.fillRect(i*s,j*s,s,s)
  }
}

Dec 25 2022 1:23 PM UTC

}// 121/140

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graphing calculator. If anyone knows how to add an input field please let me know

u/KilledByAPixel

good start, check out d/15083
u/joeytwiddle

#circlechallenge

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rep_movsd

function u(t) {

w=(4e4-t*t*9)**.5,x.fillRect(960-w,540-t*3,w*2,t*6)

Nov 6 2021 11:37 AM UTC

}// 51/140

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Circle 3 #circlechallenge #waitforit

u/rep_movsd

47 bytes - super slow
u/rep_movsd

w=(1e4-t*t)**.5,x.fillRect(960-w,540-t,w*2,t*2)
u/donbright

very cool

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rep_movsd

function u(t) {

t?x.fillText(0,960+X/8,540+Y):Y=X=99
X+=(Y-=X/69)

Nov 6 2021 10:24 AM UTC

}// 49/140

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Almost a circle #circlechallenge

u/rep_movsd

Based on the Minsky algorithm
u/rep_movsd

48 bytes - t?x.fillText(0,960+X,540+Y):Y=X=99 X+=(Y-=X/9)/9
u/joeytwiddle

TIL, thanks! https://news.ycombinator.com/item?id=15266331

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tactical_retard

function u(t) {

h=540
x.lineTo(X=960+C(k=t**t)*h,Y=h+S(k)*h)
x.moveTo(X,Y)
x.stroke()

Nov 1 2021 8:09 PM UTC

}// 69/140

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#circlechallenge

u/tactical_retard

55: h=540;x.lineTo(X=960+C(k=t**t)*h,Y=h+S(k)*h);x.stroke()

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Calada2

function u(t) {

a=500
b=540
x.beginPath()
x.lineWidth = 22
x.moveTo(S(t)*a+960,C(t)*a+b)
x.lineTo(S(t*2)*a+960,C(t*2)*300+b)
x.stroke()

Apr 23 2020 9:43 PM UTC

}// 119/140

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#circlechallenge The cardioid way

u/donbright

creative

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