Hot 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/17417 by u/tomxor

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜠴𜀬𬱣𨑬𩐨𜰬𜐮𝐩𞱩𛐭𞱡𬡣𚀳𜠰𚰹𝠪𤰨𨐽𪐯𛠶𜰶𝠭𭀩𛀲𝰰𚰹𝠪𠰨𨐩𚱩𛁩🠲𜠰🰵𝠺𜰲𛀨𨠽𪐯𛠲𜐲𜠫𭀩𛐮𝀸𝐬𨠫𜰮𝠲𚐩𪐥𝠿𬱥𭁌𪑮𩑄𨑳𪀨𪐼𜠰🱛𜐰𛠳𧐺𪐾𜐲𜀿𦰱𝐲𛀳𝀬𜠲𝠬𜁝𞡛𧐩𞡢𩑧𪑮𤁡𭁨𚁳𭁲𫱫𩐨𚐩`.replace(/u../g,'')))

Feb 1 2020 1:30 AM UTC

}// 140/140

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Queen Anne's Summerhouse: For Xiao JingJing ❤️

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u/tomxor

#castle
u/KilledByAPixel

wow, amazing!
u/tomxor

thanks :) we stayed here, it was nice, like a fairy tail.
u/aleamb

wow!
u/katkip

Awesome!
u/magna

wow!

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tomxor

remix of d/17412 by u/KilledByAPixel

function u(t) {

with(x)for(c.width|=j=1e3,scale(9,3);j--;j%5?arc(109,52+j/5,j>900?99:36,a=t+j/.6366,a+.5):beginPath(stroke()))setLineDash([j%900>50?0:5])

Jan 30 2020 10:44 PM UTC

}// 137/140

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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/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𚁪🐽𜠿𤰨𬐯𝀹𚐺𜐩𚡪𚠳𜀥𜰰𜀬𜀬𞀰𛑪𚐩𮀮𩡩𫁬𤡥𨱴𚁩𚠲𜀬𪠿𥀪𪠫𚁪𛐳🰹𛱪𚡃𚀨𬐯𞐩𚱃𚁱𛰵𚐩𞠲𜀪𚁩𙠱𚐫𜠰𜀪𚁓𚁩𛰴𚐼𛠸𚐫𞐹𚡓𚁩𛰳𙠱𜠩𛐱𜀰𚐺𜀬𥀽𜐴𜀬𜰰𜀩`.replace(/u../g,'')))

Jan 26 2020 1:59 PM UTC

}// 139/140

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Desert #fort mirage

u/lionleaf

Awesome #castle :)
u/Cloud

Relax....
u/DataMeta

Mmm #waitforit

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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𮀮𩡩𫁬𤱴𮑬𩐽𤠨𪠪𥀪𜠥𜠱𝀬𪠪🐲𝐬𥀭𪠩𚑸𛡦𪑬𫁒𩑣𭀨𪐪𜠰𛁪🱔𚡪𚰨𪠭𝀿𬐯𪠪𠰨𚁱𛰹𚐫𠰨𬐯𝐩𚐺𝀰𚠨𬐥𝀾𜠩𚰴𜀰𚠨𤰨𬐯𜐶𚐼𛠷𚐫𞐹𚡓𚁱𛰹𙠱𜠩𛐴𜀰𚐺𜀬𥀽𜐴𜀬𜑥𜰫𝠰𜀪𠰨𬐯𞀩𚐻`.replace(/u../g,'')))

Jan 25 2020 10:44 PM UTC

}// 140/140

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Jungle #fort

u/KilledByAPixel

nice!
u/KilledByAPixel

#castle

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tomxor

function u(t) {

I=x.getImageData(0,0,1920,1080);D=I.data
for(C=0xFF,i=0;p=i*4+3,C;i++)D[p]^=C,C^=D[p]
x.putImageData(I,0,0)

Jan 27 2020 10:11 PM UTC

}// 107/140

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Bruteforce 1bit #castle

u/tomxor

(fullscreen and look top left to see progress) ... although it will take 2^(1920*1080) / (60*86400*365) = x10^624206 years to permute all possible values for 2073600 bits... that is roughly 624 times the estimated lifespan of the universe based on bigbang to heat-death.
u/Xen

can we have quantum dweet on this please, i've run out of food already
u/tomxor

:P

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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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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

remix of d/17298 by u/tomxor

function u(t) {

for(c.width=240,i=18;i--;x.fillRect(z-3,47+(t/i*5&1),6,24*!!(i%7%4)))x.strokeRect(z=i*12+12,47+(t/i*6&2),12,42)

Jan 19 2020 3:00 PM UTC

}// 111/140

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Machine #piano 🎹

u/tomxor

https://www.dwitter.net/d/17274
u/KilledByAPixel

i can almost hear it

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tomxor

remix of d/17298 by u/tomxor

function u(t) {

A='▌⊐╶   ⣾ ╿╽╿ ⊘⊖';eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𜠴𜀬𪐽𜐴𞱩𛐭𞱸𦱢🐧𩡩𫁬𥁥𮁴𙱝𚁁𦱩𧐬𦀭𝀬𝐱𚐩𮁛𨐽𙱳𭁲𫱫𩑒𩑣𭀧𧐨𦀽𜰶𚱩𚠱𜠬𝠰𛀱𜠬𝀲𚐬𮀮𩡩𫁬𤡥𨱴𚁘𛐳𛀶𜀬𝠬𪐥𝰥𝀿𜠴𞠰𚐻𮁛𨑝𚁘𛁘𛀱𝠸𛀶𝠩𞱸𦱢𧐨𜐴𜀬𝠷𛀵𜐩`.replace(/u../g,'')))

Jan 20 2020 1:22 AM UTC

}// 140/140

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D-140 #synth

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