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: #Food

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tomxor

remix of d/24141 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𩠽𧰽🡓𛰶𞀭𜐮𞀸𯁃𛰱𝠭𝀮𜑼𤰫𝀦𞀬𭰽𨰮𭱩𩁴𪀦👩🐳𜰰𜠴𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𤰽𪐦𜠵𝐬𠰽𪐾🠸𛀱𛁱🐲𚡰𯀰𚐬𤠽𚁰𛑱𚐯𜐶𛁵𦱔𧐫🐳𚡒𛁵𦱔👩𛑷𧐫🐵𚡒𛁵𦱔𛐱𧐽𤠩𬀽𚁵𦱩𧐫🐷𚡒𚐫𚁦𚀩🱦𚁓𛐽𝀬𠰭🐴𚐿𚁓𚡓𚱃𚡃𚐯𞑥𝀫𛠱𞠱𞠰𚑼𯀰`.replace(/u../g,'')))

Oct 16 2021 12:50 AM UTC

}// 140/140

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#default Floyd–Steinberg #dithering

u/ciaccodavide

oooooh, I love dithering! Nice one!
u/tomxor

me too :) I didn't realise how simple the algorithm was before no, and it can be done in a single pass because it's only half a 2d kernel. Tweaking the coefficients (*R) can be fun, e.g 7*R=>5*R, 3*R=>5*R better preserves the dark and light areas in this image.
u/magna

Wow
u/sigveseb

Very nice!

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tomxor

remix of d/15553 by u/tomxor

function u(t) {

for(c.width=128,i=576;i-=1/16;x.fillRect(16*X,16*Y,Z,Z))
X=i%8,Y=i/128,
Z=1+C(5*S(Y+C(X*3))+5*S(X+S(Y*3))+t*4)**3/3

Aug 28 2019 3:34 PM UTC

}// 115/140

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#lava

Show more comments…
u/aleamb

awesome!
u/katkip

i thought it's perlin noise. gj
u/tomxor

Never heard of it :) time for a quote: "Absolute Ignorance is the artificer [...] in order to make a perfect and beautiful machine it is not necessary to know how to make it" - Robert Beverley MacKenzie, 1868 ... gona keep my monkey fingers typing, maybe I will learn something.
u/taupelink

excellent
u/username

so what did you use to implement this noise?
u/DataMeta

115 bytes, clearly :)
u/KilledByAPixel

👍

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tomxor

remix of d/26256 by u/jdspugh

function u(t) {

eval(unescape(escape`𥀦𜐿𠰽𠰭𥀫𜠦𜐲𝰺𤰽𤰫𥀭𜰦𜠵𝐬𤰦𝀷𯁃𙠴𝰿𜐺𥀽𚁔𚱴𚡴𙠳𚐫𜐻𭑛𠰼🀸𯁓𧐽𨰮𭱩𩁴𪀽𜠵𝐬𮀮𫑯𭡥𥁯𚁓𛁃𚐬𨐽𜐮𝠪𥀬𨠽𝠪𭀥𜐬𮀮𩡩𫁬𚁸𛡡𬡣𚁓𛁃𛀶𛁡𚱢𛁡𛑢𚐩𞱦𫱲𚁩🐳𩐴𞱩𛐭𞰩𪐦𜰸𝐵𯁵𦱩𧑼𯁸𛡦𪑬𫁒𩑣𭀨𪐦𜠵𝐬𪐾🠸𛀲𛀲𚐻`.replace(/u../g,'')))

Oct 9 2022 3:24 PM UTC

}// 138/140

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Pacmancraft

u/lonestar108

Whoa very cool
u/vain

haha... very cool... had the same idea but didn't managed it.

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tomxor

remix of d/23413 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𠐽𠠽𥐽𥠽𜀻𪐭𛐻𪰽𤰦𤠼𝐿𛠱𜠵𛑒𛰴𜀺𜀬𥐭👫𚡡𛁖𛐽𪰪𨠩𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩𛱷𛀱𛁓𯁒🀵𚐬𤰽𥀨𥀨𠰨𦀯𜐰𚐪𠰨𦐯𞐫𭀩𚐩🁙𛰹𛐳𚰳𚡃𚁴𚐬𤠽𣑡𭁨𛡨𮑰𫱴𚁡👘𛑁𛁢👙𛑂𚐻𠐫👕𚱷𛁂𚰽𥠪🐮𞐬𠐥👷𛁖𚰽𛠱`.replace(/u../g,'')))

Jul 28 2021 12:57 AM UTC

}// 140/140

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"This Thing" Capturing a Marble #Physics

u/magna

!!!
u/katkip

OMG

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tomxor

remix of d/20405 by u/tomxor

function u(t) {

A=S(t);B=C(t);for(c.width=X=128;X--;x.fillRect(X,36-1e3/Z,Z**.5/16,2e3/Z))for(Z=1,R=T(X/81-.8);(A*t+24+(R*B-A)*Z/8^64+(R*A+B)*Z/8)%15>1;)Z++

Oct 28 2020 6:12 PM UTC

}// 140/140

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Wolfendweet 3D #raycasting sans-bot no-clip

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u/pavel

The lack of x.fillStyle is amazing.
u/pavel

Save 3 chars by incrementing Z by .1 instead of doing the math every time: A=S(t);B=C(t);for(c.width=X=128;X--;x.fillRect(X,36-125/Z,Z**.5/7,250/Z))for(Z=0,R=T(X/81-.8);(A*t+24+(R*B-A)*Z^64+(R*A+B)*Z)%15>1;)Z+=.1
u/tomxor

Ah yes! thanks pavel :) I did try to get rid of Z/8 once but didn't go far enough with the constants as you did.
u/tomxor

Can also now play with the marching granularity more easily to get smoother results... although it's very slow without an SDF for the fractal for larger initial steps.
u/Xen

love it!
u/tomxor

#raymarching
u/13thptr

Nice dweet. Related: d/2961 d/7076
u/13thptr

#wolfenstein

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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/32653 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𤠽𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀻𪐻𦀪𝐦𤰨𚁍𨑴𪀮𨑴𨑮𜠨𮠽𥀪𝠭𞐬𮐽𦐥𜐪𝠭𜰬𬰽𮐪𮐫𮠪𮠩𚱴𚐪𜐶𚐫𬰼𝁼𬰼𜑼𦀦𬰾𝱼𮠾𜠿𥀭𤠿𮀮𩡩𫁬𤡥𨱴𚀭𛑩𙑷𛁩🠾𝰬𚁘𛑔𚰳𚐯𜰬𥀽𤠽𜐩𞡒𚠽𪀺𥀭𤠿𥀯👨𞡔👒𛰽𪀽𛠹𞀩𦀽𪐥𭰯𝠴𚡒𛑔𛁙👩𛰸𩐳𚡒𛑔𛰲𚱴`.replace(/u../g,'')))

Oct 26 2024 6:13 PM UTC

}// 140/140

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Dweet Machine

u/cantelope

bro. it was already giblets 😂
u/lewdev

(╯°□°)╯︵ ┻━┻
u/vain

tomxor, you rock dwitter
u/joeytwiddle

Where are they going, and why?

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tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨐽𤰨𭀩𛁢👃𚁴𚐬𤠽𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀻𪐻𦁼𦐪𜡼𥀯𜱼𚁡𚡘𚱢𚡔𛑢𚐪𚠲𚰨𚁢𚡘𛑡𚡔𚱡𚱡𚐪𚠲𚱙𚡙𛐮𜠩𚠪𜠼𛠰𜠿𥀭𤠿𮀮𩡩𫁬𤡥𨱴𚀭𛑩𙑷𛁩🠾𝰬𚁘𚱙𚱔𚐯𝀬𥀽𤠽𜐩𞡒𛐽𛠱𞡔𛑒🱔𛰽𛠹𝠺𥀽𤠯🐮𞐸𚑘👩𙑷𛰶𝀪𤠭𥀬𦐽𪐯𭰯𝠴𚡒𛑔𛰲`.replace(/u../g,'')))

Oct 21 2024 7:08 PM UTC

}// 140/140

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Shadownut

Show more comments…
u/vain

holy shit. how? simple mindblowing! 💗
u/magna

DAMN.
u/lewdev

This is insanity!
u/KilledByAPixel

Wow!!
u/tomxor

Thanks. Same shadow + global illumination technique as d/28068 just exchanged the scene and texture for a moving torus.
u/cantelope

excellent!
u/jellyedwards

Absolutely amazing!!
u/magna

"just exchanged the scene and texture". EZ.
u/tomxor

u/magna to be fair I started this one over a year ago, but couldn't quite fit it, so kept revisiting and shaving a char here and there, and eventually reconfigured the scene enough to find a combination that fit.
u/aleamb

wow!!

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tomxor

remix of d/19550 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀻𪐭𛐻𬀦𘑵𦱲👩𚱷𚰨𪐪𭁞𦀩𙐳𛐱𧐦𙠭𛑵𦱩𧐦𚰫𭑛𬡝𚑰👵𦱩𧐬𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩🠾𝰬𛠵𛁵𦱩𧐽𠰨𝐪𤰨𭀯𝰫𦐯𜐸𚱃𚁘𛰶𚐩𚰵𚡓𚁴𛰱𜰫𦀯𜐸𚱓𚁙𛰶𚐩𚱴𛰱𝰩🀮𝠿𜠺𬀦𜑼𬀯𜠦𦀩`.replace(/u../g,'')))

Mar 12 2022 11:56 PM UTC

}// 128/140

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#Sand #Ant #Farm

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tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𚁁👂🐸𛁕👖🐰𚐻𪐭𛐻𪰽𥀦𤠼𝐿𛠲𝐭𤠯𜠰𞠰𛁕𛐽𪰪𨐬𥠭👫𚡢𚑸𛡦𪑬𫁒𩑣𭀨𦀽𪐥𭰬𦐽𪐯𭰬𜐬𥁼𤠼𝐩𛁔👓𚁘𛰶𚐫𠰨𦐯𝠩𚱙𛰶🠸𛁒👍𨑴𪀮𪁹𬁯𭀨𨐽𦀭𠐬𨠽𦐭𠠩𞱁𚰽𥐬𠠫👖𛁁𚰽𭰬𠐥👷𛁖𚰽𛠱𜠵`.replace(/u../g,'')))

Jul 28 2021 12:08 AM UTC

}// 134/140

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Impossible Marble #Physics

u/tomxor

Inspired by d/23398. Uses raster/2d-voxel based intersection
u/Xen

love it!
u/magna

HOW?!
u/katkip

how
u/tomxor

It's particle physics, but the collisions are with implicit volumes. So rather than checking against a specific object, each pixel is intersected with the circle, if the pixel is filled and intersects, then it contributes velocity to the particle along the collision normal (the vector between the pixel and the point), the deeper the intersection based on the radius the greater the contribution... this is not correct at all and creates lots of phantom momentum, but is very simple and shares the code with drawining the screen.

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