Dweets awesomed by u/donbright

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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taupelink

remix of d/24295 by u/taupelink

function u(t) {

for(m=t?0:7e4;X=1+S(m),Y=3*S(m*m--);x.fillRect(1e3*X,180*(3+Y),i*S(Y),q))x.fillStyle=R(i=m%256,q=i*(3-2/Y*S(X))/3,q/=1+C(Y)/2,(m>>8)/256)

Nov 6 2021 10:20 PM UTC

}// 137/140

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d/24306

u/taupelink

Much credit to u/pavel for the comment he left on d/23578, with sample code to illustrate a way of making these collages in a single loop execution.
u/magna

This is awesome!
u/neimad

thank god, the old way was getting kind of annoying.
u/Xen

love it!

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cantelope

function u(t) {

x.fillText('⬤',960+S(t*(h=530))*h,h+C(t*h)*h+9)

Nov 6 2021 10:14 PM UTC

}// 47/140

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#circlechallenge

u/pavel

x.fillText('⬤',960+S(t*=h=530)*h,h+C(t)*h+9)
u/cantelope

good catch
u/rep_movsd

use 0 instead of the unicode disc

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rep_movsd

function u(t) {

w=(4e4-t*t*9)**.5,x.fillRect(960-w,540-t*3,w*2,t*6)

Nov 6 2021 11:37 AM UTC

}// 51/140

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Circle 3 #circlechallenge #waitforit

u/rep_movsd

47 bytes - super slow
u/rep_movsd

w=(1e4-t*t)**.5,x.fillRect(960-w,540-t,w*2,t*2)
u/donbright

very cool

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rep_movsd

function u(t) {

t?x.fillText(0,960+X/8,540+Y):Y=X=99
X+=(Y-=X/69)

Nov 6 2021 10:24 AM UTC

}// 49/140

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Almost a circle #circlechallenge

u/rep_movsd

Based on the Minsky algorithm
u/rep_movsd

48 bytes - t?x.fillText(0,960+X,540+Y):Y=X=99 X+=(Y-=X/9)/9
u/joeytwiddle

TIL, thanks! https://news.ycombinator.com/item?id=15266331

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Joachim

function u(t) {

eval(unescape(escape`󛼯󩭩󫍬󘍴󪍥󘍳󬍡󨽥󒭺󟝣󛭷󪝤󭍨󟜳󜌰󒭷󪝴󪌨󮌩󩭯󬬨󪜽󞜻󪜭󛜻󬽴󬭯󪽥󚌩󚝬󪝮󩝔󫼨󨜽󞌰󚼲󜌪󪜬󨬽󞜹󚽃󚍴󚬹󚽩󚜪󞜩󛍭󫽶󩝔󫼨󨜫󤼨󭌪󞜫󪜩󚬹󛍢󚼲󜌩󛍩󟽬󪝮󩝔󫼨󨜬󨬩󞭲󩝣󭌨󭌪󝌰󙝺󛌹󛌹󛌹󚜬󩭩󫍬󤭥󨽴󚍩󙬦󚍩󚬹󚽴󚬸󚜥󜬰󚬱󝜬󜜲󝼬󪝼󯍺󛌭󪝞󜬩`.replace(/u../g,'')))

Nov 6 2021 10:04 AM UTC

}// 140/140

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The millipede runs once more #creepy

u/vain

incredible - the riding centipede worm ;-)

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danny@hille.dk

remix of d/24294 by u/magna

function u(t) {

for(x.fillText('🍎',10,t*44%32),i=576;i--;x.fillRect(X*60,Y*60,60,60))x.fillStyle=R(...x.getImageData(X=i%32,Y=i>>5,1,1).data.slice(0,3))

Nov 5 2021 9:42 PM UTC

}// 136/140

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Isaac Newton's remix

u/magna

Great! :)

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rep_movsd

function u(t) {

[P,Q]=t?[A,B]:[0,1]
x.fillText(0,99*(B=Q*.8-P*.6)+960,99*(A=P*.8+Q*.6)+540)

Nov 5 2021 9:00 AM UTC

}// 75/140

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Circle2 #circlechallenge

Show more comments…
u/rep_movsd

This is based on an algorithm from "Electron Graphics and Sound" I read as a kid
u/rep_movsd

This is based on an algorithm from "Electron Graphics and Sound" I read as a kid
u/rep_movsd

We calculate a sine and cosine of a small angle delta initially, and thereafter derive them using trig identities using only addition and multiplication
u/rep_movsd

It so happens that C(O) and S(O) are almost exactly 0.8 and 0.6 for some O
u/rep_movsd

I found those by for(N=0.1;N<1;N+=.1) M=(1-N*N)**.5,console.log(N,M)
u/rep_movsd

Can be 67 bytes
u/rep_movsd

Can be 67 bytes
u/rep_movsd

[P,Q]=t?[P*.8+Q*.6,Q*.8-P*.6]:[0,1] x.fillText(0,99*Q+960,99*P+540)

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rep_movsd

remix of d/24281 by u/danny@hille.dk

function u(t) {

x.fillText(t?O=500:Y=X=300,O+X,O+Y)
X+=Y,Y-=X,X+=Y*.99

Nov 5 2021 8:04 AM UTC

}// 54/140

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Circle #circlechallenge

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magna

remix of d/24294 by u/magna

function u(t) {

e='🏀'
eval(unescape(escape`󨼮󭽩󩍴󪍼󟜰󒭷󪝴󪌨󮌩󩭯󬬨󩭩󫍬󥍥󮍴󚍥󛌹󛌱󝌩󛍤󟝧󩝴󢝭󨝧󩝄󨝴󨜨󜌬󜌬󜼲󛌱󞌩󛭤󨝴󨜬󭍲󨝮󬽦󫽲󫜨󪼽󠼨󭌩󚬹󛍺󟝓󚍴󚜪󝬹󛌭󮬬󪼬󞜶󜌬󪜽󝜴󜌩󞽩󛜭󞽦󪝬󫍒󩝣󭌨󪜥󜼲󛜱󝬬󪜯󜼲󛜹󛌱󛌱󚜩󩭩󫍬󤽴󮝬󩜽󤬨󛬮󛭤󛭳󫍩󨽥󚍯󟝩󚬴󛍯󚼴󚜩`.replace(/u../g,'')))

Nov 5 2021 3:03 AM UTC

}// 140/140

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Bouncy pixellated basketball

u/magna

Couldn't golf it down enough to hide the emoji at the center (below the rendering)
u/magna

*pixelated
u/magna

uncompressed: c.width|=0 with(x)for(fillText(e,9,14),d=getImageData(0,0,32,18).data,transform(k=C(t)*9,z=S(t)*69,-z,k,960,i=540);i--;fillRect(i%32-16,i/32-9,1,1))fillStyle=R(...d.slice(o=i*4,o+4))

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taupelink

remix of d/24254 by u/taupelink

function u(t) {

for(i=q=400;i--;x.fillRect(720*X,720*Y,90*q/2**t,i/t))f=i*t,X=f*f%3,Y=X*f%2,x.fillStyle=R(q+=i/t**.5*S(i/X&q),q/=2+C(t/Y+X),q*=2*S(Y),i/q/t)

Nov 5 2021 12:27 AM UTC

}// 140/140

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d/24295

u/donbright

#waitforit
u/donbright

the final image is really cool, i love the colors and the contrast of the black monoliths
u/donbright

upside down it looks like a strange fire

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