New #raytracing dweets

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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DazeWare

remix of d/27098 by u/rodrigo.siqueira

function u(t) {

for(X=f=c=>Math.random()*2*T(S(t/2+c*(d=r>1||T(r*r))*t%i)),Y=t/8-1.1,i=2e3;i--;x.fillRect(i,t*60,(1+f(X=i/480-2)*f(Y))*d/2,3))r=X*X+Y*Y

Mar 6 2023 5:05 PM UTC

}// 135/140

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u/rodrigo.siqueira

Impressing metal ball! #raytracing

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rodrigo.siqueira

remix of d/27094 by u/danny@hille.dk

function u(t) {

for(X=f=c=>T(S(t/2+c*(d=r>1||T(r*r))*6)),Y=t/8-1.1,i=2e3;i--;x.fillRect(i,t*60,(1+f(X=i/480-2)*f(Y))*d/2,3))r=X*X+Y*Y

Feb 20 2023 5:30 PM UTC

}// 117/140

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Mirror ball #raytracing

u/danny@hille.dk

Looks amazing!!!
u/jdspugh

Wow
u/joeytwiddle

#shiny #reflection #beautiful
u/joeytwiddle

Wait, is that thing in the middle my face? Is that how I look, outside the matrix?
u/donbright

hhooww

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jpgravel

remix of d/26069 by u/jpgravel

function u(t) {

eval(unescape(escape`𩠽𚁵𛁶𛁷𚐽🡷🠱𙠦𤰨𭐯𭰩𚡷𚱦𚁵𚠮𞀫𭠪𛠶𛀭𭐪𛠶𚱶𚠮𞀬𭰪𛠷𚐻𩡯𬠨𨰮𭱩𩁴𪀽𪐽𥰽𜐲𞀻𛐭𪐻𚑦𫱲𚁪🐰𞰫𚱪🁗𞰩𭰽𩠨𚁩𛑗𛰲𚐯𚁪𚰹𚐪𥰭𭀪𝀰𛁪𚠹𛑴𚠷𜀬𥰩𛁸𛡦𪑬𫁓𭁹𫁥👒𚁷𚠮𞐬𭰪𛠸𛁷🀰🱗𞡷𚠮𝰩𛁸𛡦𪑬𫁒𩑣𭀨𪐬𪠫𞐭𭰯𞐬𜐬𭰯𞐩`.replace(/u../g,'')))

Aug 31 2022 6:24 AM UTC

}// 140/140

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Mountain rivers #raytracing #landscape

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jpgravel

function u(t) {

eval(unescape(escape`𩠽𚁵𛁶𛁷𚐽🡷🠱𙠦𤰨𭐯𭰩𚡷𚱦𚁵𚠴𛰵𚱶𚠳𛰵𛀭𭐪𜰯𝐫𭠪𝀯𝐬𭰯𜠩𞱦𫱲𚁣𛡷𪑤𭁨👩👗🐱𜠸𞰭𛑩𞰩𩡯𬠨𪠽𜀻𚰫𪠼𥰻𚑷👦𚁩𚠶𛁪𚠱𜀭𭀪𝀰𛁗𚐫𥰬𮀮𩡩𫁬𤱴𮑬𩐽𤠨𭰪𛠸𛁷𚠮𝰬𭰼𜀦𙡗𯁼𭰪𛠶𚐬𮀮𩡩𫁬𤡥𨱴𚁩𛁪𛑷𛰹𛀱𛁷𛰹𚐊`.replace(/u../g,'')))

Aug 31 2022 4:11 AM UTC

}// 135/140

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Mountain range #raytracing #landscape

u/KilledByAPixel

nice!
u/jellyedwards

Amazing!

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pavel

function u(t) {

for(c.width&=i=8320;i--;)x.fillRect(X=i&127,i>>7,1,Math.min(...[0,2,4].map(a=>1.4-S(a+=4*t)/6-(.4-Math.hypot(X/32-2+C(a),i/4e3-1))**.3||1)))

Jul 22 2022 11:07 PM UTC

}// 140/140

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The Three-Body Problem

u/pavel

#raytracing

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ciaccodavide

remix of d/23983 by u/pavel

function u(t) {

for(c.width&=i=10368;i--;x.fillRect(i&127,i>>7,f(.7),1))f=n=>(z=5-i/3e3-3*n)>T(Math.hypot(i/64%2-1,i/5e3-n)*9-6*t)?f(n+.6+.3*S(t)):--z*.4

Oct 11 2021 8:13 PM UTC

}// 137/140

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ripple #raytracing #remix

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pavel

remix of d/23980 by u/primo

function u(t) {

for(c.width&=i=10368;i--;x.fillRect(i&127,i>>7,f(.6),1))f=n=>6-n*i/3e3-6*n>S(Math.hypot(i/64%2-1,i/5e3-2.2+1/n)*12*n-8*t)?f(n+.02):n/.7-.7

Oct 3 2021 11:54 PM UTC

}// 138/140

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#raytracing z = sin(sqrt(x*x + y*y) - t)

u/pavel

Also a pretty generic ray tracing 'engine.' Change f to trace other things.
u/pavel

Style remix, no idea how the code I'm remixing works yet. It does not look to do ray tracing so its clearly better.
u/primo

The original uses z + ∂/∂y z for saturation, which looks about right tilted at or near ~26.5°.
u/pavel

for(c.width&=i=10368;i--;x.fillRect(i&127,i>>7,f(.7),1))f=n=>(z=5-i/3e3-3*n)>S(Math.hypot(i/64%2-1,i/5e3-n)*9-6*t)?f(n+.03):--z*.4 is a better one, no weird view prism.

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Tekmap

remix of d/18441 by u/tomxor

function u(t) {

for(w=c.width=180,i=9e4;i--;x.fillRect(i%w,i/w,1+C(7*X/d)**7*S(9*Y/d)**5,d/2+Y/3))X=i%w/35-2,Y=i/w/35-1,r=X*X+Y*Y,d=r>1||1+(1-r)*C(r*9-t*8)

Jun 22 2021 3:53 AM UTC

}// 139/140

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Bubble

u/donbright

#blackmagic
u/donbright

this is bind blowing
u/donbright

mind blowing
u/aleamb

WTF! how? #render #witchcraft #raytracing #scene
u/rep_movsd

#underrated

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tomxor

remix of d/21217 by u/tomxor

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐽𙱦𪑬𭁥𬠺𪑮𭡥𬡴𚀧𞱦𫱲𚁬𩑴𘁺𛁁𛁂𛁮𛁘𛁙𛁩🐱𝠻𪐻𦀫👁𛁙𚰽𠠩𦐪𦐼𝁥𝐦𙡘𛰴𜠵𯁙𛰹𞑼𦀯𜠵𚰱𝰦𜠿𮀮𩡩𫁬𤡥𨱴𚀹𝠰𚱘𛀵𝀰𚱙𛁮𛰫𚱺𚠪𛠴𛀮𜀴𚐺𚁺🐱𛁁👓𚁲🐭𛑮🱴𚠪𪐪𫠺𭀯𪐥𜐮𝠭𛠸𚐬𠠽𠰨𬠩𛁮𚑼𯀨𫠽𞀬𦀽𭀬𦐽𪐭𛐭𝠴𜀩`.replace(/u../g,'')))

Jan 17 2021 7:58 PM UTC

}// 140/140

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2D #raymarching #globalillumination #default

Show more comments…
u/tomxor

Now we have a bitwise default :) X/425|Y/99|X/25+17&2
u/DataMeta

ahhhh this is so cool :)
u/Qwitter

This is the best Dweet I have ever seen in my life .
u/magna

!!
u/ciaccodavide

best default ever.
u/neimad

You won Dwitter
u/smtsjhr

You are doing God's Work
u/pavel

That's a fantastic use of 194 chars. Makes 140 dweets look mediocre.
u/Qwitter

This Dweet is forever burned in my mind. Literally brought tears to my eyes. Great Job Tomxor
u/dull_pixel

#raytracing

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yonatan

function u(t) {

for(i=2e3;i--;)Y=frame/500-1,X=i/500-2,s=X+Y+(q=1-X*X-Y*Y)**.5,x.fillRect(i,frame,q<0?1:s>1?0:1-s,1)

Oct 29 2020 11:34 PM UTC

}// 100/140

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lit sphere via https://twitter.com/kamoshika_vrc/status/132…

u/joeytwiddle

#sphere
u/joeytwiddle

#sphere #lighting #raytracing
u/tomxor

Nice!

dwitter.net | #raytracing