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/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

remix of d/2839 by u/alien

function u(t) {

w=c.width=115
for(j=w;j--;)
for(i=w;i--;)q=2*i*j*S(t)+C(t)*(i**2+j**2),x.fillStyle=R(s=(q*q*frame>>t)%255,s,s*3),x.fillRect(i,j,1,1)

Jul 10 2017 3:22 AM UTC

}// 132/140

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remixing @alien color + code with some of my old binary quadratic forms stuff (aka circles and squares pseudo fractals)

u/cantelope

cool donbright
u/donbright

thx cantelope

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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/2627 by u/saschavoid

function u(t) {

onmousemove=e=>(阳=e.pageX/41,月=e.pageY/31)
x.globalAlpha=.1
for(x.fillRect(0,0,i=2e3,i);i--;)x.clearRect(i,500+99*(S(t*2+i/阳)+C(t+i/月)),1,9)

Apr 29 2017 12:10 PM UTC

}// 140/140

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tone and overtone. (please move mouse over picture)

u/coderkid

lovely
u/gabrielsroka

#interactive

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donbright

remix of d/2562 by u/hscells

function u(t) {

t?c.width=w:(k=1,w=1980,f=w/2)
onmousemove=e=>k=e.pageX/94+e.pageY/942
for(i=f;i>0;i-=k)x.lineTo(w/2+S(i+t/5)*f,540+S(i*5)*f/2)
x.stroke()

Apr 23 2017 12:37 PM UTC

}// 138/140

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move mouse left-right = coarse adjustment. move mouse up-down = fine adjustment

Show more comments…
u/donbright

challenge - can you find the tuning for a single, rotating parallelogram?
u/hscells

nice use of the mouse!
u/magna

SICK!
u/z3vin

Man, I thought it was cool even before I realized the mouse interactions!
u/donbright

well the default is just stealing from @hscells
u/Xen

thats sexy!
u/Xen

thats sexy!
u/donbright

thx
u/gabrielsroka

#interactive

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donbright

remix of d/2544 by u/New_Core

function u(t) {

for(j=15;j--;){for(i=0;i<50;i++){x.beginPath();x.arc(i*(40+j*9),(99-j*5)*S(t*j*.5+i)+300+j*60,99,0,7);x.fillStyle=R(9,0,j*12,.12);x.fill()}}

Apr 21 2017 10:48 PM UTC

}// 140/140

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whale's world, not ours

u/joeytwiddle

Wow!!

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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/2476 by u/keithclark

function u(t) {

onmousemove=e=>(T=e.pageX/99,R=e.pageY*5)
for(a=c.width^=0;a--;x.fillRect(C(a-T)/S(b)*h+960,C(b)*h+540,i=h/40-5,i))h=900/(2-S(a-T)*S(b=a/R))

Apr 14 2017 12:57 AM UTC

}// 140/140

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please move your mouse up/down/left/right inside the energy mushroom. (adding mouse to @keithclark 's globe, modded shape, w @Jenky for mous-piration)

u/gabrielsroka

#interactive

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donbright

remix of d/2473 by u/Woodmouth

function u(t) {

t?o.push({a:9,b:9}):(o=[],d=0)
o.map(p=>{d=p.b>1080?3:p.b<0?0:p.a>1920?5:p.a<0?2:d+frame%5/5-.5
x.fillRect(p.a+=9*S(d),p.b+=9*C(d),9,9)})

Apr 13 2017 2:42 AM UTC

}// 137/140

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Islands, made by @Woodmouth's walkers

u/donbright

Credit to @Kalanchoe for https://www.dwitter.net/d/1395 method

dwitter.net | donbright (891)