Dweets awesomed by u/DataMeta

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.

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Current theme challenge: #Opposites

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nystrand

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀦👩🐶𩐳𞱱🐭𛑩𛰳𯀰𞱸𛡦𪑬𫁒𩑣𭀨𨐯𚁺👺𛰹𞐹𚰮𜀴𚐫𞐰𜀬𨠯𮠫𝐰𜀬𦠽𛠰𜐯𮠯𮠬𦠩𚑛𨐬𨠬𮡝👸𦱱𧑼𯁛𜀬𜀬𝠮𜱝𛁁👺𚡱𙐳𯀰𛁂👱𛱺𙐳𯀰𛁸𦱱𧐽𭀿𦱢𚱡𛰹𞐬𮠬𨐭𨠯𞐹𧐺𛐭𠑼𛐭𠠿𦱡𚱁𚡺𛁢𚱂𚡺𛁩𙐳🱺𛰳𞠹𛐨𬐦𜠩𚠹𧐺𦱝`.replace(/u../g,'')))

Mar 5 2021 3:49 PM UTC

}// 139/140

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Hollow and somewhat damaged Menger sponge

u/New_Core

"You will be assimilated. Resistance is futile." (comes up in my mind when I see it)
u/UEZ

Well done. Looks very nice. Can somebody explain me what this is about: [a,b,z]=x[q]||[0,0,6.3]. I assume it has something to do with arrays... Thx :-)
u/tomxor

It's called destructuring. The right hand side simply evaluates to an array (x[q] or [0,0,6.3] is x[q] is falsey). Then the elements of this array are assigned to variable names based on positions on the left, e.g a=0, b=0, z=6.3. Note that the left hand side is syntactic sugar, it's not an array literal.
u/UEZ

@tomxor: thx for your explanation. :-)
u/aleamb

#p3d #cube #menger #fractal

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New_Core

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜐵𛁦𫱮𭀽𘠶𨱭𘁁𬡩𨑬𘠬𩡩𫁬𥁥𮁴𚁡🐢𡡒𠑃𥁕𤡅𘠬𝀰𜀬𝠰𜀩𞱩𛐭𞰩𫁩𫡥𥁯𚀹𝠰𚰷𞐹𚡓𚁩𚱴𚐬𝐰𜀫𞐹𚡃𚁩𛰴𚐩𒡷𪑴𪀨𮀩𩡩𫁬𤱴𮑬𩐽𘠣𩡦𩠢𛁦𪑬𫀨𚐬𨱬𪑰𚀩𛁦𪑬𫁓𭁹𫁥🐢𘰴𝀴𘠬𩡩𫁬𥁥𮁴𚁡𛀳𞐰𛀶𜐰𚐻`.replace(/u../g,'')))

Mar 5 2021 1:27 PM UTC

}// 138/140

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rodrigo.siqueira

remix of d/19335 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`sepia(`
for(i=5e3;i--;f(960,540,260,t*i))f=(X,Y,s,r)=>s>1?f(X+s*S(r),Y+s*C(r),s/2,S(i+t)*3-r*2):x.fillRect(X*1,Y,t<3,.7)

Mar 5 2021 1:00 PM UTC

}// 136/140

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Broken disk #fracture

u/kimeiga

holy

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KilledByAPixel

remix of d/21814 by u/KilledByAPixel

function u(t) {

with(x)for(c.width|=i=144;i--;restore(fillText(u,0,9)))setTransform(52,!save(beginPath()),9,99,z=19*S(i*i+t),z),clip(rect(i%32*2,i>>4,2,2))

Mar 4 2021 7:41 PM UTC

}// 139/140

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fractured function #fracture #uncompressed

u/kimeiga

clever use of "u" LOL

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Pascal

function u(t) {

for(c.width|=i=w=1e3;i--;x.lineTo(w+w*(C(i+44/7*(.5+S(t+i/w/9)/2)**9)+C(i/6+t))/z,w/2-w*(S(i)+S(i/6+t))/z))z=S(i)-5
x.stroke()

Mar 4 2021 6:24 PM UTC

}// 126/140

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u/Xen

nice!

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erin

remix of d/21805 by u/erin

function u(t) {

c.width=w=130;for(i=1e4;i--;)x.fillRect(X=i%w,Y=i/w,e=S(i/1e7*i+t)*5,2),x.fillStyle=`hsla(${185+e*1.5},40%,40%,${S(i*i)}`

Mar 4 2021 4:09 AM UTC

}// 121/140

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ocean waves #water #sea #tides #waves

Show more comments…
u/tomxor

Nice!
u/tomxor

I can hear this :)
u/erin

haha thank you!
u/darrinm

Beautiful!
u/erin

thank you!!!
u/magna

Whoa!
u/DataMeta

woww

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BackendForth

remix of d/21811 by u/BackendForth

function u(t) {

c.width=1920
for(k=9;k--;)
for(i=10;i--;)for(j=25;j--;)x.fillRect(400+i*5+300/(1+2**(-39*S(t+k/9*t)+j))+k*100,540+j*8,5,8)

Mar 4 2021 2:48 AM UTC

}// 122/140

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KilledByAPixel

remix of d/21799 by u/KilledByAPixel

function u(t) {

c.before`🟥🟧🟨🟩🟦🟪`

Mar 3 2021 9:07 PM UTC

}// 16/140

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Rainbow 🌈 #16Bytes

u/Xen

love it!
u/KilledByAPixel

I should say 16 characters, its actually 34 bytes!

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tomxor

remix of d/21783 by u/tomxor

function u(t) {

A=t?A.map(a=>(s=u[a>>4]^=1,x[s?'fillRect':'clearRect'](a>>6,a&1008,16,16),a=a+2*s+1&~4,a+=a&1?a%4-2<<10:a%4-1<<4)):[54675,69010,69233,54896]

Mar 2 2021 11:27 PM UTC

}// 140/140

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Multi #langton's #ant

u/tomxor

Squashed each ant into a 16bit bit field, [X,Y,D] = 0b 111111 111111 0111. These ants were generated with: X=7,Y=7,D=0,[[-X,-Y,3+D],[+Y,-X,2+D],[+X,+Y,1+D],[-Y,+X,0+D]].map(([X,Y,D])=>X+60<<10|Y+32<<4|D%4<<0)
u/mark1626

This is incredible. Just one question, how does s = u[a >> 4] ^= 1 work?
u/tomxor

Thanks :) a>>4 is the cell index of a 64x64 grid. the lower 4 bits are for the ant's direction so shifting them off to the right leaves only the 12 X and Y bits (see above). u is just an object, so all of these indicies will be undefined initially, but undefined is falsey and bitwise operators coerce falsey into 0, i.e undefined ^ 1 == 0 ^ 1 == 1, in otherwords XOR just treats all of the initial cell values as 0. Using the assignment version ^= means we toggle each cell between 0 and 1 each time an ant passes through it (which is part of the langton ant rules).

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TommyVelz

function u(t) {

a=130
for(k=0;k<8;k++)for(l=0;l<8;l++){(k+l)%2&&x.fillRect(k*a,l*a,a,a)
x.beginPath()
x.arc(k*a+65,l*a+65,45,0,7)
l==3||l==4||x.fill()}

Mar 2 2021 7:51 PM UTC

}// 135/140

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Checkers :)

u/Xen

Welcome to the dwitter family!

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