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: #Opposites

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tomxor

function u(t) {

x.fillRect(960+eval(R)*135,540+eval(c)*135,8,8)
for(E='',i=8;i--;)
E+='S(tC(tT(t)+-*2 '.match(/.(\(.)?/g)[0|9*Math.random()]
eval(E);R=c;c=E

Feb 23 2019 4:41 PM UTC

}// 140/140

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Transcendental Monkeys #fuzzing #waitforit

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u/tomxor

Inspired by u/anotherkitten u/21medals This is more likely to draw something by focusing on the [x,y] = f(t) solution space and further reducing that to interesting ones by manipulating allowed input tokens.
u/tomxor

Familiar yet different every time :)
u/tomxor

Trust me, it will draw :P every time the comments bounce it's found a solution and assigned it, but not all combinations draw anything visible.
u/tomxor

Some abstract art!: https://imgur.com/vuVzb40
u/21medals

I don't get why no one awesomes this
u/tomxor

Haha, me too, thanks :) I think it was a little too obscure and broken looking.
u/rep_movsd

#underrated
u/Joachim

This is amazing!! Great job u/tomxor

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tomxor

remix of d/25365 by u/pavel

function u(t) {

for(c.width&=i=10386;i--;x.fillRect(X=i&127,Y=i>>7,1,!f(64)|!f(32,Y=X,X=i>>7)))f=s=>Math.round(((X&120)-s)/(1+1e4**S(t)**7))+Y&7

Apr 27 2022 12:24 AM UTC

}// 128/140

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Bit smoler, reverse rendering

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tomxor

remix of d/25338 by u/jdspugh

function u(t) {

for(i=4e4;i--;q>t*i*i%512&&x.fillRect(X+Z<<4,Y+Z<<4,16,16,x.fillStyle=R(q,p>0&&q)))X=i&31,Y=i>>5&31,Z=i>>11,p=S(X/5)*S(Y/5)*S(Z/2),q=p*p*512

Apr 18 2022 2:30 PM UTC

}// 140/140

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Schrödinger Particle Probability - Deterministic Quantum Blasphemy Version :D

u/tomxor

Kinda cheating by not clearing the screen though.
u/cantelope

heretic!
u/donbright

#physics

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tomxor

remix of d/23746 by u/rep_movsd

function u(t) {

for(Y=t*480%720|0,X=1280;X--;!Z|!Y|Y>640|(Z/480+.75&Y/480+.83&C(X*Z*Y)>.8&&Y&15)&&x.fillRect(320+X,180+Y-Z/6*S(Z/203),3,4))Z=X>640?1279-X:X

Sep 5 2021 3:30 PM UTC

}// 139/140

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Smolr #book of dweet

u/tomxor

Smolr #book of #sierpinski
u/tomxor

Yay, remix fail

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tomxor

function u(t) {

t?S=u[X+u+Y]^=1:X=Y=D=64;D=D+2*S+1&3;D&1?X+=D-2:Y+=D-1
x.fillStyle=R(!S<<8);x.fillRect(X*8,Y*8,8,8)

Feb 27 2021 5:42 PM UTC

}// 99/140

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Micro #langton's #ant

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tomxor

function u(t) {

// Xorshift 32
R ^= R << 13
R ^= R >>> 17
R ^= R << 5

// U(0,1)
f = (R>>>0)*2**-32
// Plot
x.fillRect(f*2e6%2e3,f*1e3,9,9)
// Seed
R = R||1

Feb 13 2021 12:31 PM UTC

}// 140/140

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#Xorshift 32 #PRNG

u/tomxor

I felt that there are too many extremely unecessarily long examples of xorshift32 implementations out there, with lots of fluff around the outside. It's a very nice and simple little PRNG and this is all the code you need to turn it into a unit interval (i.e the type and range you get from Math.random()): (x>>>0) * 2**-32. This conversion method is far from perfect and results in some bias, but so does the PRNG itself...

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tomxor

remix of d/18733 by u/joeytwiddle

function u(t) {

D=[5,4,3]
for(i=1e3;i;E=i--%8?E+'X0123456789*/+-&|^~'[(i^i*t)%19]:'')try{D.every((Y,X)=>Y==eval(E))&&(S[E]=1)}catch{}throw Object.keys(S)+E

May 12 2020 11:17 AM UTC

}// 139/140

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Expression Miner #improved

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u/tomxor

1k tests per frame + variable length + deterministic + keeps solution set
u/tomxor

... +4 chars :P
u/tomxor

Struggling to get it to find anything non linear though e.g D=[0,1,2,4,8]
u/tomxor

#fuzzing
u/joeytwiddle

Great, usable! Off of dwitter, this one generates valid syntax from a grammar: https://github.com/joeytwiddle/dweets-dev/bl…
u/tomxor

Interesting. I once wrote an n-card "24 game" solver which is similar but far more limited in terms of operators - by far the most significant optimization i could find was to combinations based on subexpressions that are equivalent to one already traversed i.e nodes in your AST - maybe that could be applied to yours as well?
u/tomxor

* to prune combinations
u/tomxor

oh and the other fairly decent optimization was pruning combinations based on commutativity of binary operators... i.e another kind of equivalence
u/tomxor

I should clarify: to by pruning I mean not mearly skipping evaluation of individual permutations but to be able to skip entire subtrees of permutations by detecting equivalence at the root of that subtree.
u/joeytwiddle

Pruning does sound sensible, but I'm not sure how to approach it.
u/joeytwiddle

I am also having difficultly with >3 non-trivial outputs. I think the search space is too large. But at least I found some simplifications, such as: [1,3,5,7] => X-~X
u/tomxor

Finally got it to solve a non linear one: D=[2,3,6,11,18,27] (2+X*X), just need a bit more patience

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tomxor

function u(t) {

x.fillRect(0,0,c.width=138,78);for(i=48;i--;x.fillText([...'🦙🐐🦒'][i>>4],(X&128?~X:X)&127,((Y&128?~Y:Y)&127)**2+2e4>>9))X=t+i*t*3,Y=i*3+t*140

Mar 23 2020 8:04 PM UTC

}// 140/140

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LLAMATRON : 2112 🐂 !?!

u/tomxor

#atari #llamatron
u/tomxor

maaaa a a a !
u/tomxor

❤ if you get this
u/384.cz

#llama

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tomxor

remix of d/17692 by u/iznax

function u(t) {

c.width=28
c.style.imageRendering='pixelated'
x.fillText([..."🥚🐣🐥🐤🐓🍗👨💩🌱🌾🐓🥚"][i=t%12|0],9+!i*S(t*29),12-S((i&2)*t%2*1.6)*2+S(i!=6||t*32))

Feb 22 2020 3:17 PM UTC

}// 136/140

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Retro Circle-Of-Life

u/tomxor

For FireFox replace pixelated with crisp-edges

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tomxor

remix of d/16361 by u/KilledByAPixel

function u(t) {

a=t>>3;x.arc(r=360,r+a%2*r,r,b=(0|t-a)%4/.64,b);x.stroke()

Oct 29 2019 1:02 PM UTC

}// 58/140

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58 byte #cube

u/tomxor

... no one said it had to spin :P
u/katkip

#wireframe
u/magna

#waitforit

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