New #spirograph 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.

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Current theme challenge: #Opposites

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HardlyProductive

function u(t) {

f=(a,b)=>{for(i=2e3;i--;)x.fillRect(-100+j*200+75*C(a/b*i)*C(i),-100+k*200+75*S(a/b*i)*C(i),2,2)}
for(j=10;j--;){for(k=6;k--;)f(k,j)}

Oct 11 2024 2:35 PM UTC

}// 134/140

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Roses <3 https://en.wikipedia.org/wiki/Rose_(mathemat…

u/cantelope

#spirograph

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sanco

function u(t) {

for(i=0;i<480;i++)x.fillRect(S(t),i*2,-c.width,t)/x.rotate(6* t *  Math.PI / 180);x.translate(320,240);x.fillStyle = R(t*i*i,t*t*i,t*i);

Feb 28 2022 1:48 PM UTC

}// 137/140

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First

u/danny@hille.dk

Sweet - and it looks like candy floss
u/joeytwiddle

#spirograph

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rodrigo.siqueira

remix of d/20662 by u/rodrigo.siqueira

function u(t) {

x.beginPath()
r=(i)=>S(t*6+i/2.7-3.6)*150+i
x.moveTo(960+C(t)*480,540+S(t)*480)
x.lineTo(r(960),r(540))
x.lineWidth=.7
t<6.28&&x.stroke()

Nov 18 2020 4:10 PM UTC

}// 137/140

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Fairy Star (Heptagram) #spirograph

u/danny@hille.dk

very aesthetically pleasing

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rodrigo.siqueira

remix of d/20636 by u/ciaccodavide

function u(t) {

r=(i)=>i+(S(i/2+t*9))*150
x.beginPath()
x.moveTo(960+C(t)*480,540+S(t)*480)
x.lineTo(r(960),r(540))
x.lineWidth=.7
t<6.28&&x.stroke()

Nov 17 2020 4:32 PM UTC

}// 133/140

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Full circle with 8 spikes in 2 𝝅 seconds #spirograph

u/ciaccodavide

Cool!

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katkip

function u(t) {

t||(q=0);f=(X,Y,s,A)=>{if(s>0.001)f(X+S(A)*s,N=Y+C(A)*s,s/2,A*4);else x.fillRect(X,Y,1,1)};for(i=399;i--;)f(960,540,270,q+=4/1e5)

Dec 13 2019 6:19 PM UTC

}// 129/140

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a very beautiful #fractal #spirograph #curve #recursion #recursive

u/katkip

benice's equation

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KilledByAPixel

function u(t) {

eval(unescape(escape`𬠽𧰽🡓𚁱𚠪𫠫𚰩𚠹𯀰𞱡👦🐾𜠪𬠨𚐪𩠨𬠨𚐪𭀩𞱔👦🐾𨐨𩠩𚱡𚁦𚐫𨐨𩠩𚰶𜀻𩡯𬠨𪰽𪐽𜐴𝀻𬐽𚁴𛰳𝠭𪐯𪰫𞐹𯀰𚐪𪐭𛐻𚁩𛑴𚠴𯀰𚐥𪰿𮀮𩡩𫁬𤡥𨱴𚁘𚱔𚁓𚐬𦐫𥀨𠰩𛁺🐲𚱲𚀩𛰹𛁺𚐺𮀮𨱬𩑡𬡒𩑣𭀨𦀬𦐬𤠽𜐲𜀬𤠩𚑘👩𙐱𝠪𤠬𦐽𚁩🠾𝀩𚡒𛁮🐳`.replace(/u../g,'')))

Jul 11 2019 3:48 PM UTC

}// 140/140

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𝕊𝕥𝕣𝕒𝕟𝕘𝕖𝕣 𝕊𝕪𝕞𝕓𝕠𝕝𝕤

u/KilledByAPixel

Each symbol uses 3 circles instead of the normal 2 for a #Spirograph.
u/donbright

damn

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KilledByAPixel

remix of d/14859 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𬠽𫠽🡓𚁱𚠪𫠩𚠹𯀰𞱦𫱲𚁩🐱𞐰𞱱🐨𭀯𞐫𞑼𜀩𚡩𛐭𞱘👩𙐱𞐪𞐹𚰶𝠬𦐽𚁩𛰱𞑼𜀩𚠹𞐫𞐲𛀨𪐭𭀪𞑼𜀩𙐱𞐰🱸𛡦𪑬𫁒𩑣𭀨𦀫𩠨𤰩𛁙𚱦𚁃𚐬𮠽𜠫𬠨𝠩𛰹𛁺𚐺𮀮𨱬𩑡𬡒𩑣𭀨𦀭𝐰𛁙𛐵𜀬𞐹𛀹𞐩𚐊𩠽𡠽🠳𚡲𚀴𚐪𡠨𬠨𜰩𚡴𚐫𜰪𥀨𝐩𚡆𚁲𚀲𚐪𭀩`.replace(/u../g,'')))

Jul 2 2019 12:29 AM UTC

}// 140/140

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Random Spirograph Doodle Generator

u/KilledByAPixel

#spirograph #multidweet #fullscreen
u/KilledByAPixel

The T(5) in the code should be r(5), still looks ok though. ;)
u/Xen

love it
u/KilledByAPixel

Try watching this one for a bit in fullscreen mode, the variety is amazing.

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pavel

remix of d/14846 by u/KilledByAPixel

function u(t) {

r=_=>Math.random();(frame-1)%600?0:d=r(m=r(c.width=960))
f=g=>260*((1-m)*g(a=8*t)+d*m*g(a-a/m))
x.lineTo(480+f(C),270+f(S));x.stroke()

Jul 1 2019 7:54 AM UTC

}// 134/140

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#spirograph generator

u/pavel

I believe this generates all valid spirographs, at least the circle with a small pencil hole rolling in a circle ones.
u/pavel

The incremental drawing is not parameter aware so at the extremes its too slow / too fast and choppy
u/pavel

I was gonna improve this by using the period of a spirograph but gave up deriving it.
u/pavel

I think the period is the denominator of 1-1/m expressed as an irreducible fraction.

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𬡡𫑥𙐲𝀰𛐱🰨𬠽𫠽🡃𚁱𚠪𫠩𚠹𯀰𛁦👆🐾𝀪𬠨𝠩𚡆𚁲𚀵𚐪𭀪𜠩𚰴𚡲𚀴𚐪𡠨𬠨𜰩𚡴𚠲𚐬𫁩𫡥𥱩𩁴𪀽𬠨𝰩𚰲𞐬𫁩𫡥𥁯𚀹𝠰𚱦𚁓𚐪𝰬𝐴𜀫𩠨𠰩𚠷𚐬𬱴𬡯𪱥𚀩𚐺𨡥𩱩𫡐𨑴𪀨𩡩𫁬𤱴𮑬𩐽𘠣𡡆𡠷𘠬𩡩𫁬𤡥𨱴𚀰𛀰𛀲𩐳𛀲𩐳𚐬𬐽𭀪𞐩`.replace(/u../g,'')))

Jun 30 2019 3:31 PM UTC

}// 140/140

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Random #Spirograph Generator

u/KilledByAPixel

Just give it a few seconds to get going...
u/Xen

nice
u/durian-favored-monster

how do these escape char ones work? is it decoding something? perhaps it is converting every unicode char into two ascii chars?
u/KilledByAPixel

You can replace eval with throw to get the code. Compressed with d/14282

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KilledByAPixel

function u(t) {

for(i=17;--i;R=F=>35*F(j*T)+20*F((i-9|1)*i*T)-60)for(j=10;--j;)for(k=2;k--;x[k?'moveTo':'lineTo'](120*i+R(S),120*j+R(C)))T=t+k/60
x.stroke()

Jun 28 2019 5:28 PM UTC

}// 140/140

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Spirograph Patterns

u/donbright

dude this is so awesome
u/joeytwiddle

Lovely #spirograph
u/durian-favored-monster

this one sure is pretty

dwitter.net | #spirograph