Dweets awesomed by u/jellyedwards

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: #Food

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Jezza

remix of d/12736 by u/Jezza

function u(t) {

x.fillRect(0,0,1920,1080);X=C(t/2)*6+16;Y=S(t/2.1)*6+9;x.globalAlpha=.05;for(i=99;i--;)Z=S(Y),Y+=C(X),X+=Z,x.clearRect(X*60,Y*60,5,5)

Mar 15 2019 12:30 AM UTC

}// 133/140

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Shoutout to @katkip for #attractor rabbit hole.

Show more comments…
u/tomxor

wow
u/katkip

Nice
u/aleamb

yeah!
u/jick

Wow!
u/lionleaf

That's amazing!
u/lionleaf

#grid
u/sigveseb

Rad
u/vain

How? So beautiful and impressive

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Jezza

function u(t) {

t||(X=Y=0);x.globalAlpha=.1;for(i=500;i--;)X+=S(Y),Y+=C(X),x.fillRect(X*60,Y*60,1,1);X=++X%33;Y=++Y%19

Mar 14 2019 2:55 AM UTC

}// 102/140

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X+=S(Y);Y+=C(X)

u/Xen

#waitforit
u/DataMeta

I really dig this

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marc8

function u(t) {

c.width=w=320
for(i=0;i<w;i++){
z=1-(S(k=(i-w/2)/11)/k)**2
x.globalAlpha=z**10 //gamma
x.lineTo(i,1+z*60)
x.fillRect(i,80,1,70)}
x.stroke()

Mar 12 2019 9:59 PM UTC

}// 139/140

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The physics dweets: single slit diffraction figure. Adjust the gamma value from 1 (accurate) to whatever (enhanced).

u/rodrigo.siqueira

Morlet Wavelet + Gabor filter #wavelet

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LimeLaser

function u(t) {

r=Math.random
p=t?p.map(([u,v,i,j]=[100*r()+910,100*r()+490,0,0])=>[u+i/4,v+j/4,i+2*r()-1,j+2*r()-1,x.fillRect(u,v,1,1)]):[...Array(9999)]

Mar 9 2019 7:37 AM UTC

}// 138/140

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Pupil Dilation (or Pandora's Box)

u/Xen

love it!
u/tomxor

Scary !
u/joeytwiddle

#virus

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danny@hille.dk

remix of d/12686 by u/danny@hille.dk

function u(t) {

for(c.width|=i=0;i<66;)x.fillRect(960+S(t+(i*3))*99,i++*17,99,17)

Mar 7 2019 11:31 PM UTC

}// 65/140

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pavel

remix of d/1112 by u/sigveseb

function u(t) {

for(let w=c.width=127,i=9086,a,b,n,B;a=i&w,b=i--/w;x.fillRect(a,b,1,1/(t+a/n&1^b/n)))n=b-20,B=(w*S(t*9+n/9)+(a-40)**2+n*n)/1e3,n*=B>1||C(B)

Mar 7 2019 8:31 PM UTC

}// 139/140

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#improved performance

Show more comments…
u/pavel

Original runs at 6fps on my machines this runs at 60fps. I lowered the resolution by a quarter (4x perf) and golfed 13 chars to let me declare all vars locally (2x perf).
u/tomxor

wow! this is a massive perf improvement, the original was impressive but I couldn't really see it realtime. Nice one :)
u/katkip

how
u/nender

Wow! This is amazing!
u/sigveseb

Nice!
u/f8f82804

#raytrace #d3 #pbr
u/Cloud

Cool!!!

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LimeLaser

remix of d/12626 by u/qm3ster

function u(t) {

r=Math.random
p=t?p.map(([u,v,i,j]=[99,99,1,1])=>[u+i,v+j,i+(960-u)/1e4+r()-0.5,j+(540-v)/1e4+r()-0.5,x.fillRect(u,v,4,4)]):[...Array(99)]

Mar 7 2019 7:30 AM UTC

}// 138/140

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99 Accelerating Particles (thank you qm3ster)

u/LimeLaser

I have been hoping to make a particle system that persists individual positions and velocities for a while now. With the code golfing qm3ster has done, I can finally do it!

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katkip

function u(t) {

t||(X=y=1)
f=x=>C(x)*S(x)*x/92+S(x*3.1416)/6
for(i=999;i--;)x.fillRect(960+X*20,540+y*20,10,10),y+=f(X),X+=f(y)

Mar 6 2019 4:35 PM UTC

}// 111/140

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Create your own chaotic #attractor curves #application modify f=x=

u/katkip

Beautiful #math
u/tomxor

I found a moose! :P f=x=>C(x)*T(x)*x/24+S(x/4)+C(x/8)
u/rep_movsd

#underrated

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pavel

function u(t) {

for(w=c.width=1e3,i=99;r=10*i--;i?x.stroke():x.fill())x.beginPath(p=(1+t/2-r/w)%2),x.ellipse(480,270+20*S(p*40)/9**p+!i*w*(p-2),r,r/3,0,0,7)

Mar 6 2019 7:01 AM UTC

}// 140/140

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#water #drop

u/katkip

Looks good
u/aleamb

great!
u/mcdxn

damn!

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tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.6,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=C(2*Z+S((X&Y)/(1+Z*Z))/8)

Mar 2 2019 7:46 PM UTC

}// 140/140

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Fractal Lake

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