Random dweets | Dwitter

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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Axioplase

remix of d/34187 by u/Axioplase

function u(t) {

c.width=w=100
f=(i,j,t)=>R(a=255*(.5+S(t*2+i*j)),b=255-a,b)
for(i=w*w;i>0;i-=20){x.fillStyle=f(i/w,i%w-14,t);x.fillRect(i/w,i%w,40,20)
}

Aug 10 2025 4:18 AM UTC

}// 136/140

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Wave conveyor #art

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rodrigo.siqueira

remix of d/32559 by u/rodrigo.siqueira

function u(t) {

for(a=0;a<4;a+=.1/8)for(i=80,l=e=.5;i--;r=i%4?a:t,e=r*e**S(k=1-e),l-=r/2+Math.log(k*k/2))x.fillStyle=R(r=l,r/2),x.fillRect(t*160,a*270,99,3)

Oct 10 2024 1:50 PM UTC

}// 140/140

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Golden Lyapunov Structures

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taupelink

remix of d/15399 by u/taupelink

function u(t) {

for(i=q=300,d=e=f=0;i--;d+=((r=Math.random(l=.8)*11|0)-3-d+e*f*C(d)/2)*l,f+=(r%2-f-d*e/9)*l,e+=(r%7/3-e+d*e*f/2)*l)x.fillRect(d*q,2*e*q,1,1)

Apr 3 2020 2:06 AM UTC

}// 140/140

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I'm resuming my #chaosgame experiments, no promises it will come out good if you choose to #waitforit

u/KilledByAPixel

If you use http://capjs.3d2k.com/ you can change the time scale in advanced settings, might help you iterate faster. For this one you can set the time scale to 10000 and it appears instantly.
u/taupelink

u/KilledByAPixel Thank you--that is great!

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joeytwiddle

remix of d/13782 by u/KilledByAPixel

function u(t) {

c.width=240,k=300;x.shadowBlur=9;x.shadowColor='#'+k;for(i=0;i<k;x.fillRect((i**4+t*i)%k-30,i%k+9*C(t+i)-9,w=i++?i%14:k,w))x.fillStyle='red'

Nov 5 2025 12:57 PM UTC

}// 140/140

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Red Blood Cells redux

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lewdev

remix of d/28630 by u/lewdev

function u(t) {

[o,p]="⚫⚪"
eval(unescape(escape`挮睩摴桼㴰㭸⹳捡汥⠲〬㈰⤻嬳㙥㈬㘰ⰱⰮ〱崮浡瀨⡁Ⱪ⤽㸨䈽琾㵁㽾縨琯䄩㨰ⱴ┽䄬砮晩汬呥硴⡛⸮⹂⹴潓瑲楮木㈩⹰慤却慲琨㜩崮浡瀨愽㹡㴽ㄿ漺瀩⹪潩湠怬〬㤫椪ㄴ⤩⤠`.replace(/u([^D].)/g,'$1%')))

May 1 2024 10:01 PM UTC

}// 139/140

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⏲ Binary Running HD #timer #clock

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ellisk1

function u(t) {

c.width|=0;a=50;x.fillRect(950,1e3*T(t+10),a,a);for(i=0;i<a;i++)x.fillRect(i*a,1100,a,-200+.1*S(t)*(i*(39-i)*S(a*Math.abs(i-19)+10*t)))

Dec 28 2017 4:25 PM UTC

}// 135/140

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u/Xen

cool idea
u/joeytwiddle

#water #drop #waves

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katkip

remix of d/9231 by u/katkip

function u(t) {

for(i=0;i<t;i++)x.fillRect(960+C(i+t)*960,540+S(i+t)*540,9,9)
x.globalCompositeOperation='xor';x.drawImage(c,0,-9)

Aug 13 2018 9:22 AM UTC

}// 114/140

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Evolving sierpinksi

u/BirdsTweetCodersDweet

* Sierpinski

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myro

function u(t) {

w=1080;c.width=w
for(r=0;r<w;r++){a=(r+t*60)%6.28
u=r*T(a**a)
v=r*1/S(a)
x.rotate(.003),x.fillText('o',u+w/2,v+w/4)}

Dec 1 2021 10:03 AM UTC

}// 116/140

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3D attractor?

u/Xen

nice!

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Xen

function u(t) {

x.strokeText("x",x.lineWidth=99,499)

Apr 22 2020 1:33 AM UTC

}// 36/140

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#starchallenge

u/Xen

first try sucked on phone

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rodrigo.siqueira

remix of d/18558 by u/rodrigo.siqueira

function u(t) {

for(let i=2e3,f=(X,Y,n=21)=>X*X<n?f(X*X-Y*Y-.85,2*X*Y+.2,n-1):x.fillStyle=`hsl(9,99%,${n**2}%`;i--;x.fillRect(i,t*60,1,999))f(i/490-2,1-t/9)

May 1 2020 3:20 PM UTC

}// 140/140

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Red Dragon #Julia #Fractal (wait for it)

u/KilledByAPixel

Very nice