Dweets awesomed by u/skeletonNatte

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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anotherkitten

function u(t) {

for(j=64;j--;)for(i=36;i--;x.fillRect(j*30,i*30,30,30))x.fillStyle=i>8?R(0,0,S(t+i/2+j/8)*i/2+i*3-19):R(M=S(t/39+i*i+j*.6)**6*9999-9899,M,M)

Nov 3 2020 5:36 PM UTC

}// 140/140

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ocean by night

u/danny@hille.dk

:-)

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Tesseract

remix of d/20438 by u/Odog8

function u(t) {

n=c.width=133
z=t?z+C(n*z):25
d=(b,a)=>[b-b/(k=(o=a-z)*o+b*b),a+o/k]
for(l=1e4;l--;)x.fillRect(...p=[l%n,l/n],1,(C[l]=t?d(...C[l]):p)[0]/4)

Oct 30 2020 6:18 PM UTC

}// 139/140

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SLE with a better RNG

Show more comments…
u/Odog8

What are these even used for?
u/Tesseract

It's very interesting mathematically - it corresponds to certain kinds of random walk that are hard to analyse otherwise. Some physicists also care about it.
u/Odog8

huh.
u/joeytwiddle

https://en.wikipedia.org/wiki/Schramm%E2%80%…
u/Odog8

Hey, could you explain how you made this further? The wikipedia doesnt do as good of a job as i would have liked :(
u/Tesseract

I can't explain conformal mappings in a comment, but the central part is the function d, which sends z=a+bi to z+delta*dg_t(z)/dt (dg/dt is defined on Wikipedia). For brevity, I've set delta=1/2, so it's approximating d(g_t(z))=g_{t+1/2}(z). The complex number division is golfed. Brightness corresponds to the imaginary part of g_t(z). The javascript variable z is not a+bi, but is brownian motion - zeta(t) according to Wikipedia.
u/Tesseract

I made a non-golfed version in Python a while ago which might be easier to read: https://github.com/penteract/sle/blob/master…

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Tesseract

remix of d/20437 by u/Tesseract

function u(t) {

n=c.width=99
z=t?z+(t*n^z)%1.8-1:9
for(l=7e3;l--;)x.fillRect(...p=[l/n,l%n],1,(C[l]=((a,b)=>[a+(o=a-z)/(k=o*o+b*b),b-b/k])(...C[l]||p))[1])

Oct 30 2020 5:27 PM UTC

}// 139/140

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SLE with a bad RNG

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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

function u(t) {

eval(unescape(escape`𭁼𯀨𬠽𨐽𨠽𝠴𚐻𠐽𤰨𬠩𞱂👃𚁲𚐻𩡯𬠨𨰮𭱩𩁴𪀽𦀽𜐲𞀻𦀭𛐻𨐭👫𚡁𛁢𚰽𪰪𠠬𬠭👃𚁘𛰴𜀫𤰨𭁞𦠩𚐯𦠯𦠬𮀮𩡩𫁬𤡥𨱴𚁘𛀳𝠭𜑥𜰯𦠬𪰪𬠬𜡥𜰯𦠩𚑦𫱲𚁚🐱𛁒👔𚁘𛰸𜐭𛠸𚐻𚁡𚰨𤠪𠠭𠐩𚡚𛰸𧡢𚰨𤠪𠐫𠠩𚡚𛰸𚐥𜐵🠱𞰩𪰽𚁚𚰫𚠪𛠵𛐳𚐯𝁥𜰻`.replace(/u../g,'')))

Oct 26 2020 9:45 PM UTC

}// 140/140

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Wolfendweet 3D #raycasting

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u/KilledByAPixel

🤯
u/DataMeta

🤩 #d3
u/magna

Wowstein!
u/neimad

You won Dwitter
u/tomxor

#raymarching
u/13thptr

#wolfenstein
u/xyper

this is my favourite dweet

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DataMeta

remix of d/20373 by u/Xen

function u(t) {

for(i=480;i--;x.fillStyle=R(0,g=i*C(S(t+i/3)+t+S(i/(1+T(i)))),g*.7))x.fillRect(i*4,0,r=Math.random(),r);x.drawImage(c,0,4,1920+(o=9),1080+o)

Oct 25 2020 9:46 PM UTC

}// 140/140

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#aurorae - going off danny@hille's tweak to d/20373

u/Xen

nice!
u/joeytwiddle

Smooth

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yonatan

function u(t) {

eval(unescape(escape`焽挮睩摴桼㵦㴨愽〬戽〬眽ㅥ㌬栽眬渽ㄲⱫⱍ⤽㹮㼨欽渥㈬䴽⸵⭓⡓⡴⼹⤪⨲⨨渫焫⬯㤹⤩⨮㌬昨愬戬欿眪䴺眬欿栺株䴬ⴭ温ⱦ⡫㽡⭷⩍㩡Ⱬ㽢㩢⭨⩍Ⱬ㽷⵷⩍㩷Ⱬ㽨㩨⵨⩍Ɱ⤩㩸⹳瑲潫敒散琨愬戬眬栩㭦⠩`.replace(/u(..)/g,"$1%")))

Oct 22 2020 11:56 PM UTC

}// 139/140

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https://twitter.com/RavenKwok/status/1318938…

u/KilledByAPixel

👍
u/katkip

Raven Kwok <3
u/CalSch

It looks like you're sloshing around something in WinDirStat

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ciaccodavide

function u(t) {

d=10
F=n=>(n%d<2)
for(k=1080/d;k--;){
for(j=1920/d;j--;){
x.fillStyle=F(t*d+j+S(k+t*100))?"#ed9":"#369",x.fillRect(j*d,k*d,d,d)}}

Oct 21 2020 10:07 AM UTC

}// 129/140

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Twirly Spaghetti

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smtsjhr

remix of d/20295 by u/smtsjhr

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐰𛁭🐰𯀨𝀫𜐰𜀪𤰨𭀯𝀩𚠪𜠩𛁳🐱𞐲𜀯𫐻𩡯𬠨𪰽𫐪𫐻𨐽𦱵👫𙑭𚡳𛁶🐨𪰯𫑼𜀩𚡳𛁳𛁳𧐬𫀽𭠭𥀨𭀩𚠨𭐭𞐶𜀩𛐵𝀰𚰲𚡳𛁫𛐭𞰩𬰼𫀦𙡬🀲𚡳🱸𛡦𪑬𫁒𩑣𭀨𛠮𛡡𚐺𮀮𬱴𬡯𪱥𤡥𨱴𚀮𛠮𨐩`.replace(/u../g,'')))

Oct 19 2020 6:47 AM UTC

}// 121/140

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Uncompressed code is 156/140 so i got rid of the background "pixel grid" shown here to get the original d/20295 under 140 ... still looking to golf some more...

u/smtsjhr

c.width|=0,m=0|(4+100*S(t/4)**2),s=1920/m;for(k=m*m;a=[u=k%m*s,v=(k/m|0)*s,s,s],l=v-T(t)*(u-960)-540+2*s,k--;)s<l&&l<2*s?x.fillRect(...a):x.strokeRect(...a)
u/smtsjhr

all i did to get under 140 was remove x.strokeRect(...a)
u/smtsjhr

in need of a better way to alternate between x.stroke and x.fill as the loop ranges over the rectangles of the grid

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Lynx

function u(t) {

for(i=0;i<100;i++){for(j=0;j<100;j++){x.fillStyle=R(0,S(i*t)*255,C(t)>0?C(j*t)*255:0)
x.fillRect(460+j*10,40+i*10,10,10);
}
}

Oct 17 2020 10:07 AM UTC

}// 125/140

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my first published dweet!

u/Xen

welcome to the dwitter family!

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