Top dweets by u/donbright

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: #Food

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donbright

remix of d/6160 by u/zanella

function u(t) {

Q=(x,y)=>x*x+y*y
for(i=N=128;i--;)for(j=N;j--;)B=Q(i,j),G=Q(N-i,16-j),P=Q(9-i,N-j),x.fillStyle=R(P%B%G,B%G%P,G%P%B),x.fillRect(i*8,j*8,8,8)

Jan 25 2018 1:02 AM UTC

}// 139/140

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zanella got me thinking more about math... d/6378 was basic color... this doesn't look like much but the theory is interesting to me....a circles-and-squares pseudo fractal, but with the added idea of "centers of gravity" from which the modular arithmetic create patterns against each other. it's incredibly slow so animation is almost pointless. but i like the idea still.

u/iverjo

cobweb

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donbright

remix of d/23884 by u/donbright

function u(t) {

質=(n)=>{for(j=2;j<n;j++){if (n%j==0)return n}return 0}
格=7
for(X=299;X--;)
for(Y=299;Y--;)
if (質(X%Y)) x.fillRect(格*X,格*Y,格,格)

Sep 19 2021 6:11 PM UTC

}// 126/140

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Prime fun 3 / 3 - when X is less than Y, then X modulo Y gives X, so we see the normal vertical prime stripes, white shows X is a prime. not sure about the rest, there seems to be a large white line around the line where X equals Y, #math #primes

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donbright

remix of d/9639 by u/joeytwiddle

function u(t) {

x.fillRect(0,0,W=c.width=399,W);for(j=20;j--;x.shadowBlur=j)x.lineTo(S(t*j)*199,C(j*t)*199),x.strokeStyle=x.shadowColor=R(W,W,W),x.stroke();

Sep 5 2018 4:54 AM UTC

}// 140/140

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really simple based on Joey Twiddle's work but i kind of like it.

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donbright

remix of d/2887 by u/dzozef

function u(t) {

for(i=frame;i--;){a=i%230;y=i/30;x.fillRect(a*9,99+y*5-T(((15-a)**2+(15-y)*2)+t*5)*2,9,9);x.fillStyle=R(a,y,frame);}

Jul 18 2017 2:21 AM UTC

}// 116/140

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with time it sparkles

u/cantelope

I see the sparkles!

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donbright

function u(t) {

x.fillStyle=R()
x.fillRect(0,0,2e3,2e3)
x.shadowBlur=50
x.shadowColor=R(255,0,255)
for(i=9;i--;)x.fillRect(400+i*100+S(t)*300,400,50,200)

May 12 2017 1:59 PM UTC

}// 137/140

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wishing for something like https://www.youtube.com/watch?v=ckrOWokh6rU

Show more comments…
u/joeytwiddle

I knocked up something a bit closer to the video, but it cost far too many characters. (Multiple layers, from large dark purple blur to small light-purple blur.)
u/New_Core

The first line dont do anything, right? so there is still room to play around with some colors. I tried a hsl "rainbow" thing on it.
u/donbright

joytwiddle might try codegolf.tk
u/joeytwiddle

149 now. Just hold in there one more year...
u/joeytwiddle

Done lol!
u/username

d/6939
u/username

that one looks nice as well. however, meant to type d/9639
u/donbright

lol i wish comments had time stamps now
u/donbright

#default

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donbright

remix of d/2495 by u/joeytwiddle

function u(t) {

t?s=2e3/c.clientWidth:(a=b=B=A=1,k=j=2)
K=k-a
J=j-b
Q=K**2+J**2
x.fillRect(a+=A+=K/Q,b+=B+=J/Q,9,9)
onmousemove=e=>(k=e.pageX*s,j=e.pageY*s)

Apr 15 2017 10:43 PM UTC

}// 140/140

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mouse = gravitational body (explanation https://www.patreon.com/posts/simulating-in-… )

u/joeytwiddle

Nice :) For a few spare bytes, you could place the body with onclick
u/gabrielsroka

#interactive
u/donbright

#physics

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donbright

function u(t) {

k=t
for(m=-k;m<=k;m++)for(n=-k;n<=k;n++){
r=m*m-n*n,B=m*m+n*n,G=2*m*n
x.fillRect(4*(r+B),4*(G+B),9,9)
}

Apr 14 2017 4:14 AM UTC

}// 103/140

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weird optical illusion after it finishes

u/iverjo

Oh yeah, it looks like there are white horizontal and vertical lines, but they are not actually there
u/joeytwiddle

Oooh yeah. I was only seeing grey dots at the intersections before, but on this bright monitor I can see the white lines too. *blinks*
u/alien

nice
u/Xen

i eat my pillow tonight and i'm blaming you!
u/donbright

lol sorry

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donbright

remix of d/2025 by u/@literallylara

function u(t) {

c.width^=余=C(t),正=S(t)
t?o.push({X:余+2,Y:5+正,Z:1}):o=[]
o.map((a)=>{({X,Y,Z}=a),a.X=余*X-正*Z,a.Z=余*Z+正*X,x.fillRect(1e3+X*99,Y*99-Z*33,3,3)})

Mar 14 2017 2:34 AM UTC

}// 140/140

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also inspired by @Kalanchoe https://www.dwitter.net/d/1399

u/sfz

mmmm... spinny hyperdonut... drooool
u/donbright

fun fact.. i spent the most hours on this dweet and it has the lowest score of all my dweets lol
u/codeslaw

It's dope!

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donbright

function u(t) {

x.font ="144pt Arial";
x.fillText("♥Mom♥️",600,640);

Aug 15 2019 10:59 PM UTC

}// 53/140

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donbright

remix of d/10189 by u/QXY

function u(t) {

K=256
X=t**8%2e3
Y=t**9%2e3
for(j=t**7%69+29;j>0;j--){x.lineWidth=3
x.strokeStyle=R(Y%K,K-j,X%K)
x.beginPath()
x.arc(X,Y,j,0,7)
x.stroke()}

Oct 3 2018 1:07 AM UTC

}// 139/140

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