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.

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taupelink

remix of d/29608 by u/taupelink

function u(t) {

f=(u,v,m=46)=>(m?f(u,v,m>>4)-m:u%v-v/2)**2;g=n=>f(X,n)*f(Y,n^1)/4e5&1;for(i=1e4;i--;x.fillRect(480+24*X,60+24*Y,g(4),g(5)))X=i*t%40,Y=X*i%40

Mar 6 2024 4:09 AM UTC

}// 140/140

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d/29615

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pythech

remix of d/8520 by u/pythech

function u(t) {

x.beginPath()
c.width|=0
for(i=t*1.2;--i>0;) {
x.arc(S(i)*C(t)*300+900,700,19+i**Math.min(t,20),0,9,1)
}
x.fill("evenodd")

Jun 10 2018 1:14 AM UTC

}// 122/140

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tunnels

u/lionleaf

#tunnel
u/iverjo

Nice idea
u/katkip

That's genius

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joeytwiddle

remix of d/27385 by u/joeytwiddle

function u(t) {

eval(unescape(escape`景爨椽挮睩摴栽㤲㭩ⴭ㬩砮晩汬剥捴⠴㔫⠢〸㠺㸸㘳㌰㸰⸭〼㤿唻㩘乍堾㜿䍇䄽㌹塃㸽㐶堿䅁㠵䍑䉣䀵䉵㹾䬵㵤婯夶㙍穝渹ㄿ繙縼ⴵ桞繁⬭䕩彐∮捨慲䍯摥䅴⡩⤭㌲⤪匨愽椭琩⼵ⰲ⭩⨪⸵⨵ⱗ㴱⭃⡡⤬圩`.replace(/u([^D].)/g,'$1%')))

Apr 18 2023 2:20 AM UTC

}// 140/140

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MSDCotGLB

u/joeytwiddle

Added some fake transparency. But perhaps spending some chars to double up the encoding might help the most...
u/joeytwiddle

Or perhaps convert the surface into a Fourier sequence, then we can have lots of points!
u/joeytwiddle

Thank you u/vain for the suggestion, although I'm sure if this is exactly what you had in mind
u/deobfuscate

for(i=c.width=92;i--;)x.fillRect(45+("088:>86330>0.-0<9?U;:XNMX>7?CGA=39XC>=46X?AA85CQBc@5Bu>~K5=dZoY66Mz]n91?~Y~<-5h^~A+-Ei_P".charCodeAt(i)-32)*S(a=i-t)/5,2+i**.5*5,W=1+C(a),W)

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anotherkitten

function u(t) {

for(i=0;i<239;x.fillRect(i&&i*9,i&&540+139*S(M=t*3+i/9)+90*C(t*2-i/39),i?-9:2e3,i++?S(i/76-t)**.5*190:2e3))x.fillStyle=R(i*2,i,i&&255,i||.1)

Feb 22 2021 7:27 PM UTC

}// 140/140

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u/Qwitter

thats friendly looking

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DazeWare

remix of d/34931 by u/DazeWare

function u(t) {

for(r=t*5e3,i=k=r/24<<1||1;t<1&&i--;x.fill())for(x.beginPath(j=4);j--;)x.arc(960+r*C(a=i/k*710),540+r*t**S(a),33,b=j-a+(frame%T(t)),b)

Feb 28 2026 5:38 AM UTC

}// 134/140

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heyitsguay

remix of d/10583 by u/heyitsguay

function u(t) {

if(!t)s=k=i=j=b=509
with(Math)s+=k+=(random()-.4)/40,k=min(max(k,d=C(t/2)),-d)
i+=C(s)/99
j+=S(s)/99
x.fillRect(S(j)*b+b*2,S(i)*b+b,6,6)

Oct 21 2018 5:18 PM UTC

}// 136/140

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KilledByAPixel

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=O=194,Z*=T(i/M),Y*=C(Y/O),M-=(i-X),X*=T(Z+t),N=~(X-i),x.fillStyle=R(M,Y,O,1),x.fillRect(943+X,359+.41*N,.1*Z,.1*Z)

Apr 9 2019 10:50 PM UTC

}// 139/140

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Same auto gen line now (1426 Bad / 114 Good)

u/joeytwiddle

I'm not sure what I see. Cloud City? Anyway I like it!

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Qwitter

function u(t) {

x.globalCompositeOperation="xor";f=x=>Math.random()*1520;d=400;x.fillRect(f(),f(),d,d);for(i=9;i--;)x.clearRect(d+i*100+S(t/5)*300,d,50,200)

Jan 26 2021 2:08 PM UTC

}// 140/140

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rodrigo.siqueira

remix of d/35447 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`,n=X=Y=t
for(i=6e4;i--;x.fillRect(5000+Y*8e3,X*6e3+1710,t<2,.1))X=S(X*X-Y*Y+.08)*(.69+i%.9),Y=C(2*n*Y%.29+1.96),n=X

May 29 2026 12:41 AM UTC

}// 139/140

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Snakes

u/joeytwiddle

on a flat 2-dimensional space

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pavel

function u(t) {

for(s=i=16<<!t;i--;x.fillRect(t?X+=C(a=b/.63662):(b=X=576,Y=138,608+i%4*224),t?Y+=S(a):186+(i>>2)*224,s,s))f=frame/7%21
b+=1282675>>f&!(f%1)

Nov 26 2021 8:38 PM UTC

}// 140/140

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Pen Pattern

Show more comments…
u/pavel

Source: https://www.reddit.com/r/oddlysatisfying/com…
u/pavel

1282675 encodes the 'turn right' or 'straight' orders in binary, >>f&!(f%1) checks them on frames when f is an integer.
u/tomxor

Satisfying, looks like a recursive "Bowen Knot"
u/leafyvez

so beautiful
u/rep_movsd

This looks like the traditional "kolam" that Indians traditionally draw in front of the house
u/rep_movsd

Changing that 1282675 makes different patterns
u/leafyvez

u/rep_movsd exactly my thoughts!
u/magna

Awesome!
u/tomxor

-1 b+=468199
u/tomxor

(0b1110010010011100111)
u/tomxor

Oops, you have to flip X and shift it a bit, then it's -1
u/pavel

If you start with 0 and simultaneously replace 0 with 1 and 1 with 001 you will generate this sequence and bigger ones.
u/pavel

Similarly, if you start with 1s and replace s with s1s00s1s and ignore s when drawing.
u/pavel

I invented the second method. The first one I found by putting my hand-made small sequence into https://oeis.org .
u/CalSch

It's the command key but more complex