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: #Opposites

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rodrigo.siqueira

remix of d/28336 by u/rodrigo.siqueira

function u(t) {

for(W=j=4e3;r=j--/(9-++W%9);x.fillRect(j,0,.3,2e3))x.clearRect(S(j)*r+900,950-j%2*(T(t/19+j*j))*r,2*(r>>=8),-r*4)
x.clearRect(0,950,2e3,2e3)

Aug 24 2023 12:06 PM UTC

}// 140/140

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City of rising bubbles

u/PokePika__10339__

That's super cool!
u/magna

Rapture of the rectangles

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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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rodrigo.siqueira

remix of d/27931 by u/tomxor

function u(t) {

for(c.width=A=128;A;(X^R)%7?R+=.1:T++<48?x.fillRect(A+3,36+T/R-z+9/t,T/96+S(t),2/R):(u=--A/64-1,R=1,T=-48))X=R*u+t,z=X*35+R,z=(z-T^T+z)%7>5

Jun 7 2023 7:50 PM UTC

}// 139/140

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#doom #maze #uncompressed

u/Xen

whaaaaaa :-O
u/tomxor

The horizontal lightbeams going up and down is somehow familiar... Think I gotta play Doom again :D (for research purposes of course)
u/magna

WOW

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taupelink

remix of d/27456 by u/taupelink

function u(t) {

for(i=1e4;i--&&t<4;x.fillRect(60*X,60*Y,Y+f&1,4*S(X)+f&1))X=i*i*t%12+10,Y=i/t%12+3,f=(S(Y)-C(X*S(Y/6)))**2,x.fillStyle=R(l=224*C(f)**2,l,l)

May 2 2023 12:44 AM UTC

}// 139/140

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d/27480

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tomxor

function u(t) {

eval(unescape(escape`𭁼𯀨𫱮𨱬𪑣𪰽𩐽🡻𩡯𬠨𦀫🐨𩐮𮀭𪀩𛱚𛁙𚰽𚁥𛡹𛑨𚐯𦠬𦠪🐲𛁣𛡷𪑤𭁨👷🐵𝠸𛁰🐲𩐵𞱰𞰩𦱡𛁢𧐽𛐭𭐦𙡢𚡢🀴🱛𦀫𚁰𙑷𛑨𚐯𦠫𨐪𨐭𨠪𨠬𦐫𚁰𛱷𛑨𚐯𦠫𜠪𨐪𨡝𞡛𜀬𜀬𮀮𩡩𫁬𤡥𨱴𚀭𛑰𙑷𛁰𛱷𛀱𛁵𛱨𛁵👨𚑝𯐩𚁻𮀺𦠽𞀰𛁹𞡨🐱𝠰𯐬𦀽𦐽𜀩`.replace(/u../g,'')))

Apr 28 2023 11:57 PM UTC

}// 140/140

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#app #mandelbrot explorer (Click to Zoom)

Show more comments…
u/tomxor

Doesn't go as deep as it could, needs the zoom count added to initialisation of u.
u/Xen

love it!!
u/Joachim

This is incredible!! Well done on getting it to 140!
u/GreyHope

So cool! Very impressive golfing.
u/joeytwiddle

#interactive #fractal
u/jdspugh

Awesome
u/deobfuscate

This is definitely one of the dweets of all time.

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rodrigo.siqueira

function u(t) {

for(x.fillRect(x.globalAlpha=.04,0,i=2e4,i);i--;)x.clearRect(960+T(p=C(i**3)*2)/(Z=T(i/99-t)/99),540+C(p)/Z,S(i+t),.5)

Apr 28 2023 6:09 PM UTC

}// 118/140

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Needles of light

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KilledByAPixel

remix of d/25158 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󡬽󫼽󟬡󘝵󦽩󚽯󚽺󧜬󨼮󭽩󩍴󪌽󥌽󜬵󝬬󪜽󮬽󝍥󝌻󪜭󛜻󘜨󭝛󪜫󮭝󟝵󦽩󧜦󜬪󚬨󡬨󛝔󚜫󜬪󡬨󥌩󚼴󚭆󚌭󜜩󚼸󚭆󚌱󚜩󚜭󬜿󭝛󪜭󜝝󟝵󦽩󚼱󧜽󭝛󪜭󥍝󟝵󦽩󚽔󧜽󭝛󪝝󧬨󬬾󜜶󟼰󞬱󟌼󬬩󞬰󚝲󟝍󨝴󪌮󬭡󫭤󫽭󚍸󛭦󪝬󫍒󩝣󭌨󪜥󥌬󪜾󟬸󛌱󛍱󟝆󚌰󚜩󚜪󜝥󝜻`.replace(/u../g,'')))

Apr 26 2023 4:33 AM UTC

}// 140/140

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Automata Evolution 🦠

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KilledByAPixel

remix of d/25693 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍦󪝬󫌨󚜬󭌪󟜹󞜬󬽨󨝤󫽷󠭬󭝲󟜱󞜹󛍢󩝧󪝮󤍡󭍨󚍳󪍡󩍯󭽃󫽬󫽲󟜧󘽣󩍥󙼩󛍨󟝩󟝧󟝯󟜳󞌰󝬻󪜭󛜻󩼫󟝯󟝍󨝴󪌮󬭡󫭤󫽭󚍬󪝮󩝔󫼨󪜬󪜿󭌿󩼫󭌪󝼳󚼲󞌰󞬰󞭨󚜩󟌮󜌳󟽓󚍧󚜯󜬺󫼭󩼯󪌩󩭩󫍬󤽴󮝬󩜽󨍨󬽬󚌤󮽨󛝴󯜠󙍻󜼵󚽴󚬲󯜥󙍻󞌵󛝴󚬷󯜥󨌻`.replace(/u../g,'')))

Apr 19 2023 8:27 PM UTC

}// 140/140

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Foggy Mountains ⛰️

u/Xen

love it!

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mxfh

remix of d/27322 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(ⵠ=1e4;ⵠ--;ƒ(0,0,300,ⵠ))ƒ=(β,α,ထ,ට)=>ထ>1?ƒ(α+ထ*C(ට),β+ထ*S(ට),ထ/3,T(ට/99+t*ට)):x.fillRect(β+t<<ⵠ,α+510,.1,T(t+ⵠ))

Apr 19 2023 12:45 AM UTC

}// 140/140

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accidental cloud chamber

u/deobfuscate

Did you HAVE to use stuff like ⵠ as variables?
u/deobfuscate

nvm, saw the original
u/Xen

nice!
u/mxfh

Yes I do anyway. What’s not to like about it? See https://www.dwitter.net/d/855 anyway. Find it most descriptive in the context of the limitations of dwitter. Btw this just done fudging and pasting around in iOS Safari when I can’t fall asleep. Just did feel like posting this one.

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warrenkc

remix of d/25442 by u/rodrigo.siqueira

function u(t) {

f=(x,y,n=0)=>y<9*X?f(x*x-y*C(y+4)+.5,3*x*S(y+.002),n+1):S(n/4)**2
for(i=3e4;i--;x.fillRect(X=u&2047,u>>11,f(X/1000-.8,u/2e6-.6),1))u=-~u

Apr 6 2023 12:43 AM UTC

}// 137/140

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u/cantelope

#fossils

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