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

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) {

eval(unescape(escape`𫱮𫑯𭑳𩑭𫱶𩐽𩐽🡵𦱥𛡸🠾𝁝🐴𞱦𫱲𚁩🐨𨰮𭱩𩁴𪀽𜠵𝠩𚠴𞱩𛐭𞱘👩𙐳𜠬𦐽𪐯𜐶𛁸𛡦𪑬𫁓𭁹𫁥👒𚁚𚡘𛁚𚠲𝀭𦐪𜰬𜠵𝐩𛁸𛡦𪑬𫁒𩑣𭀨𜰲𚱘𚠴𚱙𛀱𜐲𚱘𛑙𛀴𛀭𦠪𜰩𚑚🐸𚰸𚠨𭑛𪑝👵𦱩𧐪𛠷𚰨𭑛𪐭𜰳𧐫𭑛𪐭𜰲𧐫𭑛𪐭𜰱𧐭𭑛𪐫𝠴𧐩𛰸𯁼𜀩`.replace(/u../g,'')))

May 11 2020 1:03 AM UTC

}// 140/140

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Mmm yeeah, Stick ya Fingas in it !

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u/Xen

nice!
u/joeytwiddle

Pretty #fluid
u/katkip

So beautiful
u/sigveseb

fantastic!
u/aleamb

amazing #interactive
u/PoweredByWill

It's like that lighter-than-air insulation material!

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tomxor

function u(t) {

for(c.width=i=256;i-=1/4;x.fillRect(128+X*16+Y*8,96+X*4-Y*8,4,-Z*3))X=i%8-4,Y=i/32-4,Z=S(t)*9+(Y*2^X*2),x.fillStyle=R(r=X*Y*Z*2,127-r,255+r)

May 9 2020 5:14 PM UTC

}// 140/140

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Pretty XOR for no apparent reason...

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tomxor

remix of d/18497 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭰽𪐽𨰮𭱩𩁴𪀽𜰸𝀬𮀮𩡩𫁬𤱴𮑬𩐽𙰣𜀱𜐲𙰻𛐭𪐻𮀮𨱬𩑡𬡒𩑣𭀨𛠮𛠨𪐦𜐿𦰱𜀫𦀬𜐴𚱙𛀳𝠬𜠸𛁸𛡦𪑬𫁒𩑣𭀨𦀭𝐬𦐬𦐥𝠵𚰱𜀬𭰩𧐺𦰨𭀫𚰫𤰨𭀩𚐪𜠰𛠳𝰲𙑷𚱩𙐹𛀱𚱘𙑷𛀴𛀲𛁸𛡴𬡡𫡳𩡯𬡭𚀰𛀱𛀭𜐬𜀬𭰬𜀩𧐩𚐩𦀽𪐥𞐼🀶𛁙👩𙐵🀼𝠻`.replace(/u../g,'')))

Apr 26 2020 3:13 PM UTC

}// 139/140

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#City #Traffic #Simulator v3

u/DataMeta

Impressive! I like how you packed in the behavior details
u/KilledByAPixel

🚦 These drivers must be from the city I live in. Brilliant work!
u/sigveseb

Next level!
u/katkip

Looks very good
u/katkip

wait what the cars are actually smart. #genius

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tomxor

remix of d/18484 by u/jylikangas

function u(t) {

for(w=i=c.width=256;--i;x.fillRect(...(i&1?[6+X,6+Y,48,36]:[(t+++S(t))*20.372%w+i%9,1+X%w,4,2,x.transform(0,1,-1,0,w,0)])))X=i%9<<6,Y=i%5<<6

Apr 25 2020 11:25 PM UTC

}// 140/140

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#City #Traffic #Simulator v2

u/tomxor

They are mostly behaved at the junctions, few maniacs' here and there...
u/KilledByAPixel

👍
u/jylikangas

Very clever to use transform here! Thanks for improving this.
u/tomxor

Thanks for starting the idea, was really fun making this one.

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tomxor

remix of d/18413 by u/pavel

function u(t) {

for(w=c.width=120,i=9e3;i--;x.fillRect(i%w,i/w,1+S(9*X/d)**5*S(9*Y/d)**5,d/2+Y/4))X=i%w/30-2,Y=i/w/30,r=X*X+(S(Y-8)-t%4+2)**2,d=r>.2||C(r*5)

Apr 24 2020 12:16 AM UTC

}// 140/140

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#rain drop on a #window

u/Whimpers

That’s insane! Nice job 👍
u/magna

Wow!
u/sigveseb

Niiiiice!

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tomxor

remix of d/18413 by u/pavel

function u(t) {

for(w=c.width=120,i=9e3;i--;x.fillRect(i%w,i/w,1+S(9*X/d)**5*S(9*Y/d)**5,d/2+Y/3))X=i%w/30-2,Y=i/w/30-1,r=X*X+Y*Y,d=r>1||1+(1-r)*S(r*9-t*4)

Apr 23 2020 1:15 AM UTC

}// 139/140

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u/aleamb

impressive! #render #witchcraft #raytracing #scene

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tomxor

remix of d/18428 by u/tomxor

function u(t) {

for(w=c.width=240,i=4e4;i--;x.fillRect(X=i%w,Y=i/w,1,f((X-120)/t**8,(Y-68)/t**8-.703956)))f=(x,y,n=w)=>x<n?f(x*x-y*y-.8,2*x*y+.2,n-1):S(n/9)

Apr 22 2020 10:45 PM UTC

}// 140/140

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MOAAR! pixels for u/xem

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tomxor

remix of d/18323 by u/pavel

function u(t) {

f=(x,y,n=w)=>x<n?f(x*x-y*y-.8,2*x*y+.2,n-1):S(n/9)
for(w=c.width=99,i=6e3;i--;)
x.fillRect(X=i%w,Y=i/w,1,f((X-49)/t**8,(Y-28)/t**8-.703956))

Apr 22 2020 7:38 PM UTC

}// 140/140

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#zoom #julia #fractal

u/tomxor

Including x<n and .2i from u/rodrigo.siqueira
u/xem

amazing! how many extra bytes to have it less pixellized?
u/tomxor

Only +2 for 1/4 HD: d/18436 but your CPU will cry :P in fact full HD fits but you have to start measuring the speed in seconds per frame.
u/iverjo

Impressive!

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tomxor

remix of d/18338 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`𭀿𪰽𭀪𚠸𞡷👣𛡷𪑤𭁨🐹𞐻𩠽𚁘𛁙𛁮👷𚐽🡘🁮🱦𚁘𚡘𛑙𚡙𛐮𞀬𜠪𦀪𦐫𛠲𛁮𚰱𚐺𨁨𬱬𚀤𮱮𚠸𯐠𞐹𙐤𮱓𚁮𛰶𚡴𚠪𛠵𚐪𭱽𙑠𞱦𫱲𚁩🐶𩐳𞱩𛐭𞱸𛡦𪑬𫁓𭁹𫁥👦𚀨𦀭𝐰𚱫𚐯𪰭𜠭𜰶𜠱𞀵𩐭𞀬𜐭𚁙𛐲𞀫𪰩𛱫𚐩𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩𛱷𛀱𛀮𜰩`.replace(/u../g,'')))

Apr 20 2020 1:00 PM UTC

}// 140/140

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Color #zoom #julia #fractal using "X<i" - For Chrome

u/tomxor

Due to subpixel rendering differences, for FireFox: see d/18341
u/katkip

amazing

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