Dweets awesomed by u/rafroller

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: #Food

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pavel

remix of d/18322 by u/pavel

function u(t) {

for(let i=1920,f=(x,y,n=256)=>x*y<n?f(x*x-y*y-.8,2*x*y+.156,n-1):1-n/256;i--;x.fillRect(i,t*180,1,3))x.globalAlpha=f(i/540-16/9,1-t/3)

Apr 18 2020 8:32 AM UTC

}// 134/140

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#julia set for c = −0.8 + 0.156i

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u/pavel

Using x*y<n instead of the normal n&&x*x+y*y<2 is much shorter and creates the black whisps that look pretty cool.
u/pavel

This version makes it easy to play with different values of c. You can find some in https://en.wikipedia.org/wiki/Julia_set#Quad…
u/pavel

https://en.wikipedia.org/wiki/Julia_set#Quad…
u/pavel

Is link pasting broken?
u/Xen

Sexy!
u/katkip

wow
u/katkip

https://en.wikipedia.org/wiki/Julia_set
u/rodrigo.siqueira

Awesome and fast. I am remixing it to add color schemes and colorization methods.
u/Qwitter

SO FAST!

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pavel

remix of d/12336 by u/pavel

function u(t) {

for(i=t?w=600:a=b=0;i--;x.fillRect(w*b,w-w*a,1,1))[a,b]=[[3.4*a+b/6,a-b,b-a,0][q=Math.random()**t*4|0]/4,[3.4*b-a/6+2,a+b+1,a+b+.5,b][q]/4]

Apr 17 2020 11:24 PM UTC

}// 139/140

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Barnsley #fern #fractal #leaf #uncompressed

u/pavel

This version is also #improved with a #grow effect and a cap on how dark the image gets if you leave it for a while.
u/Xen

nice!

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pavel

function u(t) {

for(c.width=i=640,n=32,q=2*t%1*n|0;i--;x[X>7&X<12&[810,865,1858,9808][q>>3]>>i/8+X+6?'fillRect':'strokeRect'](X*n-q,(i&-n)-q,n,n))X=i%n

Apr 16 2020 7:25 PM UTC

}// 135/140

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Keep Gliding Mr Conway

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u/pavel

#gameoflife #glider
u/pavel

https://www.reddit.com/r/perfectloops/commen…
u/Xen

love it!
u/joeytwiddle

#tribute
u/rodrigo.siqueira

Wow! I've been using this Glider image (also known as HACKER EMBLEM) for years as my computer wallpaper, here is full hd version of my wallpaper: https://in.bot/agi/Hackers-emblem-Carbon-Gli…
u/Qwitter

Life was definitely a gateway drug for me as well.

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KilledByAPixel

function u(t) {

c.style.filter='sepia()invert('
r=Math.random
A=X=r()*4-2
B=Y=r()*2-1
for(q=i=540;i--;x.fillRect(X*q+1200,Y*q+q,1,1))X=X*X-Y*Y+(Y=2*Y*X+B,A)

Apr 9 2020 4:39 AM UTC

}// 140/140

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Mandelbrot Galaxy #Fractal #SlowDraw

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u/KilledByAPixel

GIF: https://twitter.com/KilledByAPixel/status/12…
u/KilledByAPixel

#Mandelbrot #WaitForIt
u/joeytwiddle

Very pretty! Mandelbrot in space
u/iverjo

Impressive
u/tomxor

Incredible!
u/aleamb

beautiful!!
u/Xen

sexy!
u/DataMeta

coool!
u/KilledByAPixel

thank you 😊
u/KilledByAPixel

#buddhabrot
u/Qwitter

Nice to see

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rodrigo.siqueira

remix of d/18139 by u/cantelope

function u(t) {

for(c.width|=j=37;j--;)for(w=i=133;i--;)[j,j+1].map(k=>x.lineTo(960+S(p=i/7+t)*k/(Z=w+C(p)*k*3.4)*2e3,(58-k)**3/Z+j))
x.stroke()

Apr 6 2020 12:08 PM UTC

}// 128/140

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128 bytes #vortex #d3 #uncompressed

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𪐽𪀽𝐴𜀬𭰽𨰮𭱩𩁴𪁼🐰𞱩𛐭𞱸𛡢𩑧𪑮𤁡𭁨𚁸𛡳𭁲𫱫𩐨𚐩𚑛𜀬𮀮𫁩𫡥𥱩𩁴𪀽𞑝𛡭𨑰𚁶🐾𮀮𩡩𫁬𤡥𨱴𚁘👷𛰲𚰨𤰨𬀽𪐪𛠳𝐫𭠫𭀯𜠩𚰨𪐯𝐰𯀰𚐪𝀭𜐴𚐯𚁚👃𚁰𚐫𞀩𚡨𛁙👨𚰨𪐥𝐰𚠮𝀭𞐩𛱚𚡨𛁳👷𛱚𛱚𛁳𛁸𛡬𪑮𩑔𫰨𦀫𬰯𜠬𦐫𬰯𜠩𚐩`.replace(/u../g,'')))

Apr 6 2020 4:44 AM UTC

}// 140/140

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https://dweet.net/407/18157

u/cantelope

play with the vars at the top -> https://codegolf.dweet.net/a/407

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pavel

function u(t) {

for(c.width=i=620;i--;x.lineTo(310*(z+p*S(b))/z,300*(3+q*C(a))/z))q=i/8&1||-1,p=4-q*S(a=S(a=S(b=i/98+2*t)+b)/2+a/2),z=8+p*C(b-=t);x.stroke()

Apr 4 2020 7:12 PM UTC

}// 140/140

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#mobius strip

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u/pavel

Using sin(sin(x)+x)+sin(x)+x as a smooth staircase function to implement the flip as a pulse.
u/KilledByAPixel

👍
u/Xen

love it
u/aleamb

love it!
u/danny@hille.dk

Nice - möbius tape
u/Qwitter

Im sorry, but I find only one side of this to be Awesome.
u/vain

beautiful and smooth transformation / animation

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼👪🐳𞀻𪠭🐲𞰩𩡯𬠨𭰽𪐽𜐱𞀻𪐭🐲𞱸𛡢𩑧𪑮𤁡𭁨𚁸𛡳𭁲𫱫𩐨𚐩𚑛𩀽𚁶👩𙐴𚐿𪠺𪐬𩀫𜡝𛡭𨑰𚁫🐾𮀮𫁩𫡥𥁯𚀹𝠰𚱓𚁰🐨𭠿𪐺𪰩𛰹𛠲𜰫𭀩𚠨𩠽𭠿𪰺𪠫𭀪𞐥𜠩𛰨𦠽𭰫𠰨𬀩𚡦𚠳𚐪𜡥𜰬𚀵𞀭𩠩𚠪𜰯𦠭𭰬𮀮𫁩𫡥𥱩𩁴𪀽𝐱𜠯𦠩𚐻`.replace(/u../g,'')))

Apr 4 2020 10:31 AM UTC

}// 140/140

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#vortex #d3

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ersagun

remix of d/18086 by u/pavel

function u(t) {

with(x)fillStyle='#FFF',fillRect(0,0,2,1e3),fillStyle=R(),fillRect(0,540,2,10),drawImage(c,2,Math.random()*10-5)

Apr 2 2020 9:28 PM UTC

}// 112/140

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brown noise

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pavel

function u(t) {

for(i=1920;i--;x.fillRect(i&-T,i%T*T,T=32,T))x.fillStyle=`hsl(${T*t},99%,${u[i]=u[i]*.94+T/Math.hypot(i/T-T-C(3*t)*20,i%T-16-S(4*t)*9)||0}%`

Apr 2 2020 4:46 AM UTC

}// 140/140

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Flare

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u/pavel

Inspired by https://twitter.com/ntsutae/status/124366720…
u/jylikangas

Lovely use of an array for the trail effect!
u/BriSeven

hypot?! WHAAAT how long has THAT been there?
u/katkip

this is actually easier than it looks
u/sigveseb

Looks very pretty :)
u/aleamb

amazing!
u/rodrigo.siqueira

It reminds me the light and movement of this Fluid Simulation https://paveldogreat.github.io/WebGL-Fluid-S…
u/Scaledish

hell, it looks better than the fluid simulation
u/joeytwiddle

#glow #worm

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