Dweets awesomed by u/13thptr

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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

show FPS hide FPS share 4 remixes fullscreen

veubeke

function u(t) {

x.fillRect(960,540,C(t)*300,S(t)*300)

Apr 21 2020 4:40 AM UTC

}// 37/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

How are you drawing circles?

show FPS hide FPS share 2 remixes fullscreen

cantelope

function u(t) {

for(x[g='fillStyle']='#0003',x[f='fillRect'](0,0,w=i=1920,i);i--;x[f](b%w,(b/w|0)%1080,9,9))x[g]=`hsl(${b=(i+w+t/99)**2.3} 99%50%`

Apr 20 2020 7:04 AM UTC

}// 130/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

no Math.random

show FPS hide FPS share fullscreen

tomxor

remix of d/18338 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`𭀿𪰽𭀪𚠸𞡷👣𛡷𪑤𭁨🐹𞐻𩠽𚁘𛁙𛁮👷𚐽🡘🁮🱦𚁘𚡘𛑙𚡙𛐮𞀬𜠪𦀪𦐫𛠲𛁮𚰱𚐺𨁨𬱬𚀤𮱮𚠸𯐠𞐹𙐤𮱓𚁮𛰶𚡴𚠪𛠵𚐪𭱽𙑠𞱦𫱲𚁩🐶𩐳𞱩𛐭𞱸𛡦𪑬𫁓𭁹𫁥👦𚀨𦀭𝐰𚱫𚐯𪰭𜠭𜰶𜠱𞀵𩐭𞀬𜐭𚁙𛐲𞀫𪰩𛱫𚐩𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩𛱷𛀱𛀮𜠩`.replace(/u../g,'')))

Apr 20 2020 12:53 AM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Color #zoom #julia #fractal using "X<i"

Show more comments…
u/tomxor

For zoom without slowing down use k=t**t, but you will need very precise coordinates. Here are some other coords I found: f((X-50+k)/k+5100096e-9,1-(Y-28+k)/k), f((X-50+k)/k-2,1-(Y-28+k)/k+201113e-7)
u/tomxor

Oops, hitting subpixel rendering differences again... intended for firefox, chrome looks a bit too mushy, change fill pixel to .3 for chrome.
u/joeytwiddle

Pretty nice! 😻
u/13thptr

amazing
u/tomxor

Due to subpixel rendering differences, for Chrome: see d/18346
u/Joachim

Wow! #underrated #colourful How did you make it infinite? Whenever I’ve tried making a Mandelbrot it always pixelates after the first few seconds of zoom ing in.

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/18323 by u/pavel

function u(t) {

for(i=2e3,f=(X,Y,n=89)=>X<9?f(X*X-Y*Y-.8,2*X*Y+.2,n+2):x.fillStyle=`hsl(${n*2} 90%${n/2}%`;i--;x.fillRect(i,t*90,1,900))f(i/490-2,1-t/6)

Apr 19 2020 9:13 PM UTC

}// 136/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Color #Julia Set #fractal purple blue rays

u/pavel

Broken on Safari because of the missing space in the hsl
u/katkip

satisfying to watch
u/rodrigo.siqueira

Here is a version (with other colors) working on Safari: https://www.dwitter.net/d/18352

show FPS hide FPS share fullscreen

cantelope

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁦𪑬𫁒𩑣𭀨𜀬𜀬𨰮𭱩𩁴𪀽𜠵𝠬𪀽𜐴𝀩𛁩🐳𜠻𪐭𛐻𬱴𬡯𪱥𚀩𚑦𫱲𚁪🐳𜰻𪠭𛐻𫁩𫡥𥁯𚀱𜠸𚱓𚁰𚐪𫀪𤰨𬐩𛱚𛀷𜠫𠰨𬐩𚡬𛱚𚐩𦠽𚁃𚁰🐨𪐾𜐶🱪𞡩𚐯𝐮𜐫𭀩𚡓𚁱🐨𪐾𜐶🱩𛐱𝠺𪠩𛰵𚐫𜐩𛱨𛁳𭁲𫱫𩑓𭁹𫁥👒𚁨𚰨𫀽𤰨𭀩𚐪𪀬𜀬𪀩`.replace(/u../g,'')))

Apr 19 2020 6:04 AM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

related, https://codegolf.dweet.net/a/419

u/katkip

awesome!
u/Xen

nice!

show FPS hide FPS share 1 remix fullscreen

katkip

function u(t) {

f=(X,Y,s)=>{for(k=50;k--;)x.fillRect(X-s/k/2,Y-k*8,s/k,4*s),x.fillRect(X-15,Y+149+k*C(t),30,99)};c.width|=z=500;f(z+S(t)*z,z,50)

Apr 18 2020 8:59 PM UTC

}// 128/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Vaccine against coronavirus. This was supposed to be a default where the rectangles are vaccines but no space left for the for ;( please golf it for me and I give you a cookie.

u/iznax

for(c.width|=z=500,i=10;--i;)for(s=k=50;k--;)for(j=2;j--;)x.fillRect(i*100+z+S(t)*z-(j?s/k/2:15),z+(j?-k*8:149+k*C(t)),j?s/k:30,j?4*s:99)

show FPS hide FPS share fullscreen

rodrigo.siqueira

remix of d/18323 by u/pavel

function u(t) {

for(let i=2e3,f=(x,y,n=256)=>x*y<n?f(x*x-y*y-.6,2*x*y+.5,n-1):1-n/256;i--;x.fillRect(i,t*180,1,3))x.fillStyle=R(f(i/490-2,1-t/3)*i,0,i/14)

Apr 18 2020 6:34 PM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Color #julia set for c = -0.6 + 0.5i #fractal

u/sigveseb

Nice colors

show FPS hide FPS share fullscreen

katkip

remix of d/18323 by u/pavel

function u(t) {

eval(unescape(escape`𩡯𬠨𫁥𭀠𪐽𜐹𜠰𛁦🐨𮀬𮐬𫠽𜐵𜀩🐾𮀪𮐼𫠿𩠨𮀪𮀭𮐪𮐯𜐮𜀷𛐮𞀬𮀪𮐫𤰨𮀪𮐪𭀯𜠩𛁮𛐳𚐺𜐭𫠯𜠵𝠻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁩𛁴𚠱𞀰𛀱𛑴𛰹𛀳𚐩𮀮𩱬𫱢𨑬𠑬𬁨𨐽𩠨𪐯𝐴𜀭𜐶𛰹𛀱𛑴𛰳𚰮𜀱𚐠`.replace(/uD./g,'')))

Apr 18 2020 10:14 AM UTC

}// 119/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Baphomet #fractal #satan

show FPS hide FPS share 5 remixes fullscreen

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

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

#julia set for c = −0.8 + 0.156i

Show more comments…
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!

show FPS hide FPS share 2 remixes fullscreen

pavel

function u(t) {

for(let i=1920,f=(x,n=420,a=0,b=0)=>a*a+b*b<n?f(x,n-1,a*a-b*b+x,2*a*b+.1133-t/4615):n/420;i--;)x.fillRect(i,180*t,f(i/8e5-.7467),3)

Apr 18 2020 5:59 AM UTC

}// 131/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

(X=-0.7453, Y=0.1127, R=6.5e-4) section of the #mandelbrot set

u/pavel

This version draws 1x3 pixels to speed up rendering. for(let i=2e3,f=(x,n=420,a=0,b=0)=>a*a+b*b<n?f(x,n-1,a*a-b*b+x,2*a*b+.1133-t/13845):n/420;i--;)x.fillRect(i,60*t,s=f(i/8e5-.7467),s) looks better in fullscreen but is 3x as slow.
u/pavel

let and the automatic scoping of args in f makes this _really_ quick. I can increase the loop to 4e3 iterations and still have 60fps on my machine. Would be interesting to speed this up by rendering multiple rows per frame.
u/katkip

all dweets made by u/pavel are genius
u/Xen

godlike!
u/Qwitter

agreed !!!!

dwitter.net | 13thptr (20573)