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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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donbright

remix of d/2379 by u/jick

function u(t) {

x.globalAlpha=.008
半=500
x.fillRect(0,0,i=w=2e3,w)
for(i=frame;i--;){
P=t-Math.random()
x.clearRect(2*半+i*T(P),半+i*C(P),8,8)
}

Apr 2 2017 4:03 AM UTC

}// 126/140

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in the middle of the Bell Curve, there are multitudes.

u/z3vin

Sweet

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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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