Dweets awesomed by u/recursive

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: #ScaryMovies

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rodrigo.siqueira

remix of d/25214 by u/New_Core

function u(t) {

for(X=2e3;X--;x.fillRect(X,t*60,1.6,5/a**.3)){a=X/330-3,i=b=t/6-1.5
do{d=a*a-b*b-.8,b=2*a*b+.17,a=d,i++}while(S(Math.random()*99)*a<9)}

Nov 27 2023 3:00 AM UTC

}// 135/140

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Noise Julia #Fractal

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rodrigo.siqueira

remix of d/28943 by u/rodrigo.siqueira

function u(t) {

for(i=14e3;i--;)x.fillRect(960+2e4*T(i*i*t)/i/t+S(i/2)*480,180+S(i)*160+1e4*C(i*i*t)/i-660*S(i/9)+9/t,1,t<1)

Nov 26 2023 1:27 PM UTC

}// 108/140

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Pretzel link

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rodrigo.siqueira

remix of d/28933 by u/rodrigo.siqueira

function u(t) {

a=b=9e3;for(i=a;i--;x.fillRect(X=90*a/S(i*i/90)/i/t+4*a+S(i/2)*600+C(i*i+t/4)*99,S(i)*300+540/(1+S(i*i)/t/9),.3,t<3))a=48+a*.8,b=5*a

Nov 24 2023 12:08 PM UTC

}// 132/140

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infinity sketch

u/vain

Wow, it looks so amazing. Like its real/nature. Very cool!
u/vain

Where did you get all your inspirations and algos from? ;-)
u/rodrigo.siqueira

The "infinity" symbol is just the graph of: X=sin(i/2) , Y=sin(i). A particular case of #Lissajous curve. I then introduced some noise and interference It emerged as a remix of previous posts.

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rodrigo.siqueira

remix of d/28867 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐽𨁦𪑬𭁥𬠺𪑮𭡥𬡴𚁠𒡡👢🐸𜀰𞱦𫱲𚁩👡𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𦀽𨐯𭀪𥀨𪐪𨠪𭀩𛱩𚠹𞐫𝀪𨐬𨠪𚀮𜠶𚱔𚁩𚡩𚐯𭀯𪐭𛠰𜀳𛱴𚐭𤰨𦀯𝠵𜀩𚠹𞐬𢰽𜐫𛠱𛱴𛁋𚠨𭀼𜰩𚐩𨐽𝐸𚱡𛰱𛠳𛁢🐵𚡡𚱢𛰲𛁸𛡦𪑬𫁓𭁹𫁥👒𚁡𛰨𝀭𭀩𛀹𞐪𭀬𜐹𞐪𭀩𒠠`.replace(/u../g,'')))

Nov 23 2023 1:18 PM UTC

}// 139/140

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LDN 43 cosmic nebula #stars

u/rodrigo.siqueira

"In the vast tapestry of the cosmos, a mysterious object emerges as a silent poet, inscribing verses of enigma across the celestial canvas. Within its distant glow, unfolds the language of the unknown inscribed in the cosmic code." (ChatGPT)
u/MonteChristo

I love (apart from the beautiful dweet) that there are several random emojis in the raw string

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rodrigo.siqueira

remix of d/28878 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`挮獴祬攮晩汴敲㵠楮癥牴⡠ഊ砮晩汬却祬攽刨㠰ⰳ〬ㄵ〩ഊ景爨愽戽琬椽㡥㐻椭ⴻ戭㵢⼵⸱⭃⡡⨲⸵⤪㈬愫㴨椯戦椥㈩⨳ⵢ⩓⡡⨲⤯㠭愪愯㐮㌩砮晩汬剥捴⡢⨳㤰⬹㔰ⰱ㔰〭愪ㄸ㔰ⵢ⨴〬⸱ⱴ㰱⤠`.replace(/u([^D].)/g,'$1%')))

Nov 20 2023 3:37 PM UTC

}// 137/140

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Multi fern fractal green #plant #fern

u/rodrigo.siqueira

"In the tender embrace of a fractal fern, the secrets of nature's infinite beauty unfold, unveiling the kaleidoscope of life's intricate tapestry, unknown yet harmoniously connected." (ChatGPT)

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rodrigo.siqueira

remix of d/28827 by u/rodrigo.siqueira

function u(t) {

x.fillStyle=R(0,9,60)
for(A=0,X=Y=t,i=6e4;i--;x.fillRect(X*15+550,Y*13+540,.1,t<2))Y=(i/Y&1)*27+(Y-X)/2+.25/Y+S(X/9)*2,X=X+Y

Nov 8 2023 1:00 PM UTC

}// 124/140

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Roads on the Rodragon Curve #fractal

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tomxor

remix of d/28068 by u/tomxor

function u(t) {

for(w=c.width&=i=10368;i;T=(2*X&3*t+T)%7<3&Y*Y<2?R-T?T+.1:R+=.1:R!=T?R&=x.fillRect(--i%w,i>>7,(X+Y+5)/9,1):T+.2)X=i%w/64*R-T,Y=i/4e3*R-T

Nov 7 2023 9:40 PM UTC

}// 136/140

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Pseudo Global Illumination - Sans-Textures

u/cantelope

wat
u/joeytwiddle

#d3 #lighting #uncompressed #hiddengem
u/DataMeta

wow
u/aleamb

wtf.... amazing!
u/pavel

Holy crap!

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rodrigo.siqueira

remix of d/28802 by u/timothytomato

function u(t) {

c.width|=c.style.filter=`blur(2.5vh)contrast(9)sepia(1)hue-rotate(${t/2}rad)`
for(i=300;i--;)x.fillRect(3*i+500,1e3-T(t/15+i**3)*300,50,200)

Nov 4 2023 7:18 PM UTC

}// 140/140

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Lava lamp #metaballs

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rodrigo.siqueira

remix of d/28793 by u/AArt1256

function u(t) {

for(X=Y=t,i=8e4;i--;Y=(i/Y&8)+(Y-X)*.999,X+=Y+.1/X)x.fillRect(X*16+900,Y*16+540,.1,t<2);c.style.filter='invert()sepia()'

Nov 1 2023 8:44 PM UTC

}// 120/140

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Tiling effect

u/Joachim

#shiny
u/magna

#texture

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tomxor

remix of d/28051 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭰽𨰮𭱩𩁴𪀦👩🐱𜀳𝠸𞱩𞱔🐨𜠪𦀦𦠩𙐷🀳𙡙𚡙🀲🱒𛑔🱔𚰮𜀵𞡒𚰽𛠰𝐺𤠡👔🱒𙠽𮀮𩡩𫁬𤡥𨱴𚀭𛑩𙑷𛁩🠾𝰬𜐭𝁥𝐯𚁘𚱙𚰱𞀩𚠪𝐬𜐫𭐥𝠯𝠯𤠩𞠨𭐽𦐼𛠳🱙𚡙𧠲𞡙🀮𝠿𝐺𭰫𦀪𞑞𦐪𝑞𦠪𞐬𥀫𛠱𚐩𦀽𪐥𭰯𝠴𚡒𛑔𛁙👩𛰴𩐳𚡒𛑔𛁚👴𚠳𚱔`.replace(/u../g,'')))

Jun 28 2023 4:47 AM UTC

}// 140/140

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Pseudo Global Illumination

Show more comments…
u/KilledByAPixel

wow!
u/UEZ

brutal
u/Joachim

:O
u/vain

OMFG!!! Absolutly incredible. A "making of" or "how is it done" would be really nice. Awesome work you did!
u/tomxor

Thanks guys :) I have time to outline the pseudo radiance/GI concept at least: Each pixel's ray reflects once after the 1st intersection with the scene. All rays reflect in the same pre-defined direction, in parallel with each other, and roughly towards the light source but not collinear with it i.e not directly in line. The distance between the 2nd intersection (reflected ray end position) and the light source position, is used to estimate luminance.
u/tomxor

This is not physically accurate or intuitive, but is similar in concept to ambient occlusion where single bounce rays are used to estimate luminance based on "exposure" to ambient light. However unlike AC we can only afford a single ray, so we take that single ray and bounce it in a *similar* direction to the light source and see what we hit (what occludes the ray in that direction, which is why we get directional shading). The closer the 2nd intersection is to the light source the greater the luminance should be as a kind of bad proxy of "is exposed to a (probably?) bright surface".
u/tomxor

The reason we don't simply use the length of the reflected portion of the ray, is because although it does yield occlusion effects, the light position is inconsistent and parallel surfaces are flat and unconvincing because the reflected ray lengths are the same. So by making the light source and reflection ray not quite collinear, the distance between those 2nd intersections and the light source follows a gradient for parallel surfaces, causing more convincing shading... At least that's what I think is happening! I doubt this has good scene adaptability though, probably just a demo algorithm :D
u/tomxor

Also for some reason I'm quite happy with /R, super short poor mans anisotropic texture filter :P just fading out and letting lighting take over the further away the surface.
u/vain

Thanks u/tomxor - you really rock 😎
u/lionleaf

Ok, wow that's amazing!
u/iverjo

Incredible
u/jellyedwards

Unbelievable!!
u/cantelope

wat
u/jdspugh

Stunning
u/ugurkilci

I'm not understand! 𩡯𬠨𭰽𨰮𭱩𩁴𪀦👩🐱𜀳𝠸𞱩𞱔🐨𜠪𦀦𦠩𙐷🀳𙡙𚡙🀲🱒𛑔🱔𚰮𜀵𞡒𚰽𛠰𝐺𤠡👔🱒𙠽𮀮𩡩𫁬𤡥𨱴𚀭𛑩𙑷𛁩🠾𝰬𜐭𝁥𝐯𚁘𚱙𚰱𞀩𚠪𝐬𜐫𭐥𝠯𝠯𤠩𞠨𭐽𦐼𛠳🱙𚡙𧠲𞡙🀮𝠿𝐺𭰫𦀪𞑞𦐪𝑞𦠪𞐬𥀫𛠱𚐩𦀽𪐥𭰯𝠴𚡒𛑔𛁙👩𛰴𩐳𚡒𛑔𛁚👴𚠳𚱔 How? Your have unicode generator?
u/majorh5

You can use https://beta.dwitter.net for compressing your code to get it even smaller.

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