Dweets awesomed by u/mxfh

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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yonatan

function u(t) {

for(c.width|=k=i=540;i--;x.strokeRect(960-i*2,k-i,i*4,i*2))n=i/7,x.setLineDash((t*k+1e5/i)%99>50?[n,n,0]:[n,0,n])

Feb 22 2020 6:45 PM UTC

}// 113/140

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pattern idea from https://twitter.com/ntsutae/status/123119038…

u/aleamb

amazing! #tunnel

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iznax

function u(t) {

c.width|=0
x.font="32em Eggzes"
Life=["🥚","🐣","🐥","🐤","🐓","🍗"]
x.fillText(Life[i=(t>>1)%6],640+(i?0:S(t*29)*25),850-(i==2)*S((t%2)*1.4)*200)

Feb 21 2020 5:39 AM UTC

}// 140/140

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A box without hinges hides golden treasure... #growth

Show more comments…
u/KilledByAPixel

Wow!
u/aleamb

lol! #animation
u/Cloud

:D
u/Xen

loving that source ;-)
u/magna

That was epic.
u/KilledByAPixel

Lol, font=eggzes.
u/pavel

You can do Life=[..."🥚🐣🐥🐤🐓🍗"] to save twelve chars
u/pavel

I was expecting the last one to be the poop emoji hah
u/kan_9

So you mean the egg came first?
u/katkip

hehe
u/pavel

Isn't it obvious that the egg came first? Chickens evolved. The first chicken had non-chicken parents. This chicken hatched from a chicken egg... because it was its egg.
u/tomxor

lol, settled by semantics... so where does the chicken begin and it's progenitor end? and is that conveniently by definition when hard shelled eggs appeared.
u/pavel

What do you intend to mean by dismissing what I said as semantics? It would be true that the chicken came first if chickens were the first of their lineage to hatch from eggs but being birds i doubt that is the case.
u/pavel

Err, if they were first to _lay_ eggs, without hatching from one.
u/pavel

Point is, the egg is finalized as far as I know. Whichever example was the first chicken, by whatever definition, even if two people cant agree on a definition, that first chicken hatched from its egg and so a chicken egg came first.
u/tomxor

🤣 don't worry man, it's literally the chicken and egg problem
u/KilledByAPixel

Evolution is very gradual, new species (chicken) don't pop into existence. This can't happen because it would need to mate to procreate. Therefore there is no such thing as "first chicken", so the question itself makes no sense.
u/pavel

'Chicken' is an arbitrary human label, these can pop in. Why can't the second chicken come from non-chicken parents too? Also, we dont need a 'first chicken.' There was a time when we had no chickens, all chickens come from chicken eggs, therefore chicken eggs came first.

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Cloud

remix of d/17584 by u/New_Core

function u(t) {

c.style.filter=`blur(9px)contrast(15)`
for(c.width|=i=9;i--;){x.fillStyle=R(99,40)
x.fillRect(960+600*S(t/3+i),440+400*C(t/3+i/.6),200,200)}

Feb 15 2020 10:25 AM UTC

}// 140/140

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#magma

u/katkip

wow!

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tomxor

remix of d/10534 by u/tomxor

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐽𙱦𪑬𭁥𬠺𪑮𭡥𬡴𚀱𙰻𩡯𬠨𨐽𨠽𤀽𜰮𜐴𛁩🐱𩐴𞱰👩𙠴𛁳🐲𝀰𚱰𚡡𚠳𝐬𪐭𛐻𨐫🐨𚁴𚡩𛱢𙠱𚐭𨐫𨠪𤰨𨐪𤀩𚐯𜠬𨠫🐨𛑡𚡢𚱃𚁡𚡐𚐩𛰲𚑸𛡦𪑬𫁒𩑣𭀨𞀸𜀫𬰪𤰨𦐽𨠪𤀫𬀪𨠪𞐩𚡃𚀡𬀪𨐪𤀩𛀴𞐵𚱳𚡃𚁙𛑰𛰲𚐬𛠰𜰭𤰨𦐫𬀪𛠴𚐪𛠰𜰬𜐩`.replace(/u../g,'')))

Jan 18 2020 7:52 PM UTC

}// 140/140

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#space #planet not #saturn 2

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u/KilledByAPixel

👍
u/KilledByAPixel

can you link us to more info on these equations?
u/tomxor

i'm not sure i can, much of it is just from messing around here on dwitter, and all of the chaotic stuff i've been doing has evolved from some distant bifructation thing here ages ago. Which part are you interested in specifically? I can try to explain as far as I understand it.
u/tomxor

Assuming you are refering to the pattern rather than the mapping, it's essentially just a+=(R-a+b*S(a*P))/2,b+=(-a*b+C(a*P))/2 where i've generated R{0,1} deterministically with a basic LCG type PRNG that feeds off the variables themselves: t*i/b&1, everything else is mapping. For the pattern i've just been messing with the coefficients and number of itterations between fresh generation of R for my various other dweets, but ultimately it all started here d/15329 which I adapted from u/taupelink so maybe he can tell us what it's formal name is because I can't figure it out.
u/KilledByAPixel

thanks, i will look into it!
u/denzen

wow, amazing!
u/magna

wow!
u/denzen

a bit buggy in safari
u/tomxor

I can't see safari, but if it's anything like blink's renderer then the compositor seems to change it's bias torards ceiling into 256 for high alpha, at least when derived from antialiasing subpixel shapes as in this case. Firefox seems to be less biased and faster to boot, so the ring will dissappear around the back as it's supposed to as the pixel area approaches epsilon. These differences are inevitable when exploiting something as sensitive as antialiasing or downsampling.
u/rodrigo.siqueira

I'm trying to understand how the "R" part works in the equation. Do you know? I see it's a number that varies between a few values. Is it a sort of "radius"? Is it randomness important or can it be non-random? Why a constant doesn't work?
u/metamero

one of my favorites ever
u/tomxor

@rodrigo The R part (t*i/b&1) is just a smaller replacement for Math.random(), formally it's an LCG PRNG, informally it's a bunch of stuff I multiplied together modulo 2 that I found to be sufficiently unifom (it would be a terrible PRNG more generally if analysed in detail it's probably full of regularities).
u/tomxor

A replacement for 0|Math.random()*2 (floored) I meant to say.
u/rodrigo.siqueira

I was trying to understand what is the intuitive meaning of this value "0|Math.random()*2" in the equation. I am still not sure (and I am probably wrong) but It seems that adding this "R" value to variable "a" (X position), it will displace the image to the right or left and create a similar image. It seems that it also works as a radius (zoom factor).
u/tomxor

Well my intuition from my limited understand here is that it's kind of like a fork at each point in the path that [a,b] is taking, as long as R is uniform enough the bias in the function sort of emerges and makes [a,b] follow certain paths more than others... I imagine it like a stochastic marble rolling into certain grooves in a landscape, just goto roll enough marbles to start to see the grooves.
u/tomxor

Sounds a bit like 2d gradient descent O_o

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KilledByAPixel

remix of d/17007 by u/KilledByAPixel

function u(t) {

for(c.width|=i=259,x.translate(1e3,99);i--;q='— ',x.fillText(r+q+q+q+q+r,(a>>4)%2*10-65,9))x.scale(z=1.02,z),r=(a=i+t*60|0)%64?'   ':' ♜ '

Jan 15 2020 6:34 PM UTC

}// 138/140

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Chessboard Path #Castle #D3

u/DataMeta

It seems the Queen visited the apothecary :)
u/KilledByAPixel

#chess

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joeytwiddle

remix of d/11549 by u/joeytwiddle

function u(t) {

for(R=Math.random,i=700;i--;x.fillRect(960+r*C(a),80+y+r/9*S(a),.2,.2))y=896*R(),T=y>768,r=T?30:(y|127)*(y*S(y/300)-2*y%128)/1313,a=9*R()

Dec 25 2019 2:02 PM UTC

}// 137/140

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A quick and dirty Merry #Christmas #tree mix

u/katkip

Awesome!
u/Xen

nicely
u/iverjo

Great!
u/joeytwiddle

I originally felt a little ashamed to post because the distribution of dots is not uniform, hence "dirty", but your kind comments have reminded me that nobody really cares. Indeed, bugs like this can even give an image more character than perfection would. Thanks! 🙏

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f8f82804

remix of d/11936 by u/f8f82804

function u(t) {

eval(unescape(escape`景爨椽挮睩摴桼㵣⹳瑹汥⹦楬瑥爽❩湶敲琨ㄩ✬猽㌲〻椭㴵㭸⹦楬汒散琨㌪猭眫攬椬㈪眫攬㔩⥹㵩⽳ⴲⱷ㵳⨨⡹㸮㜿猺ㄩ⵹⩹⤪⨮㔬攽吨眪椫琩ⱸ⹦楬汓瑹汥㵠桳氨⑻㈸〭椯㙽‹㔥‵ㄥ⥠`.replace(/u(..)/g,"$1%")))

Nov 15 2019 12:22 AM UTC

}// 130/140

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#outrun #glitch #sunset

u/Xen

love it!
u/mxfh

https://www.dwitter.net/d/11992
u/mxfh

❤️! ^ can somone add the road now? ^

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f8f82804

remix of d/16598 by u/f8f82804

function u(t) {

for(X=w=c.width^=0,s=256;X-->-w;x.lineTo(_X-S(a)*Y,540+C(a)*Y))a=C(z=(_X=X>0?X:-X)/s+t)*3-C(t),Y=s*S(z*3.14-t)*C(z+t)+(X<0?s:0);x.fill();

Nov 14 2019 2:53 AM UTC

}// 137/140

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u/katkip

looks good

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metamero

function u(t) {

for(i=49;i--;x.fillRect(435+i%7*T,15+j*T,T=150,T,x.fillStyle='#'+'FFF,FCDD09,EB7711,DA121A,742C64,0F47AF,078930'.split`,`[(i-j)%7]))j=i/7|0

Nov 11 2019 3:03 PM UTC

}// 139/140

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Whipala

u/metamero

toda solidariedade ao povo boliviano! américa latina resiste!
u/joeytwiddle

#flag representing some native peoples of the Andes, including Bolivia, Peru, Ecuador, ...

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f8f82804

remix of d/16561 by u/f8f82804

function u(t) {

for(x.fillRect(0,0,X=c.width^=0,X),s=200;X-=4;x.clearRect(0,s*C(z-t*3)*T(t/5),2,s))x.setTransform(4+C(θ=C(z=X/s)-t/4),β=S(θ),-β,C(θ),X,540);

Nov 9 2019 5:44 PM UTC

}// 140/140

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#ribbon

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