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

remix of d/21621 by u/tomxor

function u(t) {

for(c.width&=m=i=8320;i--;x.fillRect(X=i&127,Y=i>>7,1,f(X/m+.01,Y/m)))f=(x,y,n=42)=>--n&&y/C(x+n/2+t)<2?f(x*x-y*y-1.5,2*x*y,n):n/16

Feb 8 2021 3:43 AM UTC

}// 131/140

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Something #creepy #fractal :/

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u/tomxor

I find this really unsettling for some reason !
u/katkip

amazing
u/DataMeta

whoa
u/Qwitter

its too good
u/iverjo

This somehow reminds me of the flesh-eating plant (The Angostura) in Moomin
u/sigveseb

So many tentacles!

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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/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/12779 by u/tomxor

function u(t) {

eval(unescape(escape`琽琯㤫ㄮ㜻挮睩摴栽㈴〻挮獴祬攽❦楬瑥爺楮癥牴⠱✻景爨椽㉥㐻椭ⴻ⥸⹦楬汒散琨㔴〪䌨堽ㄮ㔷⵩┱㠰⼳㤰⤬㘰〫㔴〪匨堩⩃⡙㴳⸱⵩⼴攴⤭匨䌨匨太㈰⤫匨堪㈰⤩⨳⤪⨳⨶ⰱⰨ䬽䌨夫琩⨹⤼⸱㼮ㄺ䬾ㄿㄺ䬩`.replace(/u(..)/g,"$1%")))

Mar 17 2019 3:08 PM UTC

}// 140/140

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Moon Sunrise #moon #space

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u/Xen

impressive!
u/magna

wow!
u/Jezza

Cool!
u/sigveseb

Holy shit that's good
u/joeytwiddle

Gosh! #lighting
u/lionleaf

#planet amazing!
u/lionleaf

Well, not really a #planet but related to the hashtag :)
u/joeytwiddle

#hiddengem
u/DataMeta

Demarcate the gem before it's hidden! ;D
u/katkip

#compressed
u/jdspugh

Wow

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tomxor

remix of d/26087 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𬀽𭰽𜐲𞀻𬀼𜡥𝀻𚐨𭐾🠽𜐩🱛𦀬𦡝👛𦀪𛠸𚱚𚠮𝠬𦠪𛠸𛑘𚠮𝠬𠰫👓𚁘𛱵𚐪𭐯𞑝𞡸𛡦𪑬𫁒𩑣𭀨𚰫𬀥𭰬𬀯𭰬𜐬𛑃𚡰𛰶𩐳𛁸𛡦𪑬𫁓𭁹𫁥👒𚁃𚠷𚱓𚁃𚐪𞐬𠰪𝠬𠰼𜀿𬀯𜰲𞡃𚠵𚐬𭐽𜠳𞀬𠰽𜐴𛁘🐲𩐶𛱰𚠨𬀯𝠴𙐲𛐱𚐬𦠽𜡥𝠯𬀫𭀪𭐩`.replace(/u../g,'')))

Sep 11 2022 12:22 AM UTC

}// 140/140

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Perspective Mountain Range

u/Joachim

Wooooooow! Best #d3 terrain yet!
u/tomxor

Teamwork ;D
u/SophiaCristina

Truly loved it!

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tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.6,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=C(2*Z+S((X&Y)/(1+Z*Z))/8)

Mar 2 2019 7:46 PM UTC

}// 140/140

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Fractal Lake

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tomxor

remix of d/25758 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𠐽𠠽𥐽𥠽𪰽𜰲𞱩𛐭𞱔🐲𚡃𚀶𚡍𨑴𪀮𨑴𨑮𜠨𦀭🐶𝀬𦐭👫𚐭𭰪𠰨𭀯𜠩𚐫𦀪𦀯𭰫𦐪𦐯𭰾𝐩𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩𛱷𛀱𛁔𯁒🀰𚐬𨐽𦀭𠐬𨠽𦐭𠠬𤠽𨐪𨐫𨠪𨠭𪰬𥀦𤠼𜀦𙠨𥐭👡𛁖𛐽𨠩𞱁𚰽𥐯𪰬𠠫👖𛱫𛁖𚰽𝰭𥠯𝐻`.replace(/u../g,'')))

Jun 28 2022 9:27 PM UTC

}// 140/140

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Spherical #Laundry #Physics

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u/tomxor

#centrifugal #centripetal #washingmachine
u/Joachim

Awesome
u/vain

Very cool! Amazing work
u/aleamb

wow! amazing!
u/TGY

that would've been amazing website loader XD
u/Odog8

I see stuff like this and wonder why more physics engines don't use raycasting for collision...
u/magna

HOWWWW

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tomxor

remix of d/20416 by u/tomxor

function u(t) {

eval(unescape(escape`𠐽𤰨𭀩𞱂👃𚁴𚐻𩡯𬠨𨰮𭱩𩁴𪀽𦀽𜐲𞀻𦀭𛐻𚑻𩡯𬠨𦠽𜐬𤠽𥀨𦀯𞀱𛐮𞀩𞱡🐲𜀫𚁒𚡂𛑁𚐪𦠬𨠽𜐳𜠫𚁒𚡁𚱂𚐪𦠬𚁡𧡢𚐥𝰾𜐻𚑚𚰽𛠱𞱦𫱲𚁙🐭𝀸𞱙𚰫🀴𞀻𮀮𩡩𫁬𤡥𨱴𚁘𛀳𝠭𦐯𦠬𮠥𝰼𝠿𦠯𞀺𮠫𭀪𝠦𨐦𙠭𜐬𜐩𚑺🐨𨐫𨠩𚠸🀼𨐥𜠬𮠽𮠭𦑞𦐫𮡽`.replace(/u../g,'')))

Oct 30 2020 12:00 AM UTC

}// 140/140

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Doom? #raycasting

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u/tomxor

UAC something something Zombies... something something Mars
u/tomxor

Z+=.03 for smoother sampling if your CPU can take it.
u/yonatan

nice one!
u/DataMeta

super cool
u/Xen

love it!
u/sigveseb

waaa with texturing! awesome!
u/tomxor

Thanks :) I just realised I missclassified these. Although it is 2.5D with 3D texturing as Wolfenstien/Doom pioneered, the 2D distance is found using #raymarching rather than casting, which is necessary for size and implicit surfaces.
u/DataMeta

#d2.5
u/DataMeta

heheh tag gaffe
u/bandaloo

oh my god dude
u/vain

Uffff... O.o

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tomxor

remix of d/27317 by u/tomxor

function u(t) {

eval(unescape(escape`𩠽𬠽🡈𚁈𚁃𚁲𚐪𦐭𤰨𬠩𚡚𛁘𚐭𛠳𛁃𚁲𚐪𦠫𤰨𬠩𚡙𚐾𛠱𞱦𫱲𚁈👍𨑴𪀮𪁹𬁯𭀬𨰮𭱩𩁴𪀽𬀽𭰽𜐲𞀻𬀼𜑥𝀻𤠼𜐲𙡦𚀫𚱵𙐶𚱴𚐿𤠯🐮𞐶𞡸𛡦𪑬𫁒𩑣𭀨𬀥𭰬𬀫𚰯𭰬𤠯𞀬𤠽𭐽𜐩𚑘👰𛰶𝀥𜠭𜠫𭐥𝠯𜠮𝐬𦐽𬀯𞁥𜰭𛠶𛁚👒𛰸𛐮𝐻`.replace(/u../g,'')))

Apr 2 2023 11:48 AM UTC

}// 133/140

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Linked Toroids #sdf #chain

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u/magna

!!!!!!!
u/Joachim

Woooooow
u/vain

Just wow! Seems you are using the undocumented and hidden Init3DEngine() function ;-)
u/13thptr

What magna said.
u/deobfuscate

Wait, they're just torus?
u/deobfuscate

(pretend this isnt me): always has been :gun:
u/jdspugh

Amazing

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tomxor

remix of d/26200 by u/tomxor

function u(t) {

eval(unescape(escape`𩠽𚁘𛁙𛁚𛁁𚐽🡸𛡦𪑬𫁒𩑣𭀨𦀬𦐬𭰽𦠼𛠳🰴𚡚𞡚𛁷𛁚🠮𜠦𙡦𚁘𚱚𚡓𚁁𚐬𦐭𦠪𠰨𠐩𛁚𚠮𞐵𛁁𚱃𚀹𚡴𛱚𚱮𛱚𚰲𚡴𚰲𚡮𚐯𦠯𞀩𛁚𚠳𙐱🠮𞀦𙡦𚁘𛁙𛁚𚠮𞀬𠐫𞐪𦠥𜠭𜐬𫠫𚰩𛁸𛡦𪑬𫁓𭁹𫁥👠𘰤𮰶𚡚🀼𝑽𨀩𞱣𛡷𪑤𭁨🐳𜠰𞱦𚀱𝠰𛀲𜀰𛀱𜐬𫠽𜀩`.replace(/u../g,'')))

Sep 28 2022 12:52 AM UTC

}// 140/140

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#tree 🌳

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u/tomxor

A brisk wind, a hint of autumn.
u/taupelink

nice!
u/KilledByAPixel

awesome
u/Joachim

Wow, I love the colours! #organic
u/sigveseb

Incredible!
u/jellyedwards

Wow!
u/magna

Aspen!
u/tomxor

This is slow on Chrome for some reason. Try Firefox for higher FPS
u/aleamb

wow!
u/aleamb

#organic #tree #landscape

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