Top dweets by u/tomxor

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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tomxor

remix of d/17224 by u/tomxor

function u(t) {

c.style='filter:invert(1';for(a=b=p=3.14,i=1e4;i--;a+=(r-a+b*S(a*p))/p,b+=(-a*b+C(a*p))/p)i&4&&x.fillRect(900+b*480,60+a*960,1,.2,r=i*t/b&3)

Jan 19 2020 1:39 PM UTC

}// 140/140

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u/13thptr

mind=blown
u/tomxor

:D did you see the tendrils too, stuff just lives in math i swear
u/ivylab

I just learned this cool invert trick from your dweets, awesome. Did you notice that you can leave out the 1 at the end? :)
u/tomxor

Oh nice, thanks for the tip u/ivylab :)

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tomxor

function u(t) {

for(c.width=63,i=3e3;i--;x.fillRect(R=i&63,T=i>>6,1,.5-Z/24))for(j=5,Z=12;j--;)Z-=((R-32)**2+(T-18)**2+Z*Z)**.5-8+S(R/2+t*4)*S(T/2)*S(Z/2)*3

Oct 6 2019 12:27 PM UTC

}// 140/140

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Ray Marching SDF Sphere+Bumps

u/tomxor

Specifically, sphere tracing, with axis aligned field, i.e no perspective, marching along Z only. The sphere is not rotating, the simple displacement map is just being pushed through it's x.
u/yonatan

orthogonal raymarching... nice idea
u/tomxor

You said it more succinctly :)
u/tomxor

#raymarching

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tomxor

remix of d/12820 by u/tomxor

function u(t) {

for(a=b=0,i=1e4;i--;x.fillRect(960+480*S(a*3)*S(b*7),540+480*C(a*3),1,.1))r=0|2*Math.random(),a+=.2*(r-a*S(b*3+C(a*3+C(a*3)))),b+=.4*(r-a*b)

Aug 9 2019 6:57 PM UTC

}// 140/140

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Chaos Planet #planet #space

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tomxor

remix of d/35004 by u/NiVZ

function u(t) {

for(c.width|=i=63;i--;)'筯璓珧秧䧭秏篏䤧篯积'.charCodeAt(t%10)&1<<i&&x.fillRect(14+i%3<<6,7+i/3<<6,64,64)

Mar 6 2026 9:38 PM UTC

}// 95/140

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LECO - Unicode Bitpacked

u/tomxor

This is actually 115 bytes so only an 11 byte reduction over hex encoding, because each of the 10 codepoints takes up 3 bytes each when utf8 encoded, (over the wire, in the DB or in a local file)
u/dee-gomma

Top!
u/NiVZ

Loving seeing all the remixes. I've had another observation. The top left and bottom right segments are always filled. That means the binary can be reduced from 15 bits to 13 bits. Or a max value of 32,767 to 8,191. Would that help to compress things further?
u/tomxor

@NiVZ redundancies are a good thing to look for, but the tricky thing is figuring out if it's worth the extra code to pull out the info from the other side, sometimes you just gotta try and see if it saves bytes.
u/46uuuu

how u do that

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tomxor

remix of d/26174 by u/384.cz

function u(t) {

t?2:c.outerHTML=`<textarea cols=72 oninput="value=value.toLowerCase().replace(/./g,x=>'ireasgtb'.indexOf(x)+1||x)">Type Something here`

Sep 21 2022 1:42 PM UTC

}// 136/140

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#leetspeak converter #app

u/tomxor

In full screen you can pretend to type fluid leetspeak ;P
u/danny@hille.dk

just like in the good old days :-) *B1FF*
u/Qwitter

my dw17732 p455wo2d 15 p455wo2d.

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tomxor

remix of d/26155 by u/KilledByAPixel

function u(t) {

for(c.width=99,i=18;i;x.stroke(new Path2D('M'+[4+i,47-i,14,4,43,7,A=43-S(t=S(t*2))*i/.6,B=7+C(t)*i/.3,A+9,B+1,52,8,80,11,83+i,53-i])))i-=9

Sep 16 2022 7:51 PM UTC

}// 138/140

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Smoler Swing Set

u/tomxor

Can we now fit a child!?
u/KilledByAPixel

that was quick!
u/danny@hille.dk

Unreal!
u/KilledByAPixel

#swing

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tomxor

remix of d/23235 by u/katkip

function u(t) {

t*=60;X=t/16;':D ꯿믿ɿ諯﨏菿ʟ⊯⌯Ͽ褐称Ā저⧠ᤐð ⇐Ő蠀硰@觰耀';Y=t%16;x.fillStyle=code.charCodeAt(X)>>Y&1?`hsl(${t} 99%50%`:R();x.fillRect(X<<5,Y<<5,32,32)

Jun 27 2021 2:06 PM UTC

}// 140/140

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https://js1024.fun 2021

u/tomxor

#js1024 #pixelart
u/tomxor

Also a weird kind of quine
u/katkip

WOW

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tomxor

function u(t) {

R?w=128:c.width=w
for(T=S,S=C,C=T,n=0,i=2e4;j=--i/w|i%w*w;n+=~S[i+5]-~S[i-6])x.fillRect(i%w,j%w,R=frame&1,C[j]=R?n>33&n<59?n<46|C[j]:j&!t:n)

Feb 9 2020 1:38 PM UTC

}// 140/140

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#LargerThanLife #Automata Bugs Rule

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u/tomxor

The Larger Than Life "Bugs" rule R5,C0,M1,S34..58,B34..45,NM. You can introduce more entropy by adding spaces to the code (to restart) which causes i&1 to be combined with existing state in the rule's dead space.
u/tomxor

This uses a sliding window to efficiently compute the sum of arbitrary radi Moore neighbourhoods (i.e box blur kernels). It naturally wraps to the next line giving it a kind of twisted toroidal space, which takes less code and is more efficient since it is only necessary to initialise the sliding window once per dimension: O(2n+2r). The FPS is half of what is displayed since every other frame is used to sum the transposed sum of x.
u/tomxor

Other sized w must be a power of 2 and i must be at least w**2+r+1 (r=neighbourhood radius) to allow the sliding window to correctly initialise, otherwise a bad sum will propagate throughout the grid usually causing everything to die.
u/KilledByAPixel

👍 Thanks for the explanation!
u/tomxor

hmm the larger than necessary i seems to be introducing artifacts... change to i=w*w+6 if you want to see the pure rule.
u/katkip

Woow! I remember it from the The Powder Toy game

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tomxor

remix of d/17367 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𩡯𬠨𪰽𜀻𪐽𪰾🠳𛁪👫𙠷𛁱👩𚱴𚡪𚠪𜠮𝡼𜀬𪰫𚰼𝰶𞀻𮀮𩡩𫁬𤱴𮑬𩐽𤠨𪠽🐳🰱𜠷𞡪𚠲𝐬𪠪🐲𝐬𜠴𜀭𪠩𚑸𛡦𪑬𫁒𩑣𭀨𪐪𜠰𛁪🰵𜀪𚁪𚰱𜠩𚰨𪠭𝀿𜠰𚡃𚁱𛰲𝀩𞠴𜀪𚁱𙐵🠳𚐭𝰰𜀩𞠰𛀲𜀬𜑥𜰫𚁪🐽𝀦𙡃𚁱𛰶𚐼𛠶🰶𜀪𠰨𬐯𝠩𛐸𜀰𞠰𚐩`.replace(/u../g,'')))

Jan 25 2020 11:59 PM UTC

}// 137/140

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#castle moat #bridge

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tomxor

remix of d/15952 by u/tomxor

function u(t) {

eval(unescape(escape`景爨眽挮睩摴栽ㄲ〬椽㡥㌻椭ⴻ砮晩汬剥捴⡒㵩╷ⱔ㵩⽷ⰱⰮ㘭娯㘴⤩景爨樽㐬娽眻樭ⴻ娭㴨⡒ⴶ〩⨪㈫⡔⼲⤪⨲⭚⩚⤪⨮㔭⠱㘫匨启猫琪㐩⨸⤫䌨㔪匨启猫䌨刯猪㌩⤫㔪匨刯猫匨娯猫启猪㌫琪㠩⤫琩⨵⥳㴱㘻`.replace(/u(..)/g,"$1%")))

Oct 18 2019 11:35 PM UTC

}// 140/140

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Ray Marching SDF Smoke

u/tomxor

Runs significantly faster in FireFox for some reason.
u/tomxor

Part of the smokeyness is obtained by exploiting artifacts in the ray marching algorithm itself, by only marching a constant and very short depth (4 steps) smooth aberations appear around the true volume (representative of the sphere tracing)
u/DataMeta

WOW!!! #smoke #realistic #compressed
u/tomxor

#raymarching

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