Top dweets by u/iverjo

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: #ScaryMovies

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iverjo

remix of d/104 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=3/(9.1-(t+i/99)%9),x.beginPath(),j=i*7+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Feb 24 2017 6:47 PM UTC

}// 138/140

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u/SpecialAgent

my hat goes off to you sir!
u/Kalanchoe

That's unbelievable
u/iverjo

Try this one in fullscreen for a more immersive experience
u/Niklas

impressive!
u/donbright

:)
u/aendrew

This is incredible.
u/vonzo

reminds me to Gescom <3
u/hvge

http://www.pouet.net/prod.php?which=3397 ❤️
u/badthai

How did you come up with this?
u/iverjo

@badthai: First I made a classic tunnel effect (like this: https://www.dwitter.net/d/205). Then I made several remixes of it by tweaking parameters. This was one of the results. See also https://www.dwitter.net/d/106
u/iverjo

#tunnel
u/vain

cool segmented tunnel fly

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iverjo

remix of d/89 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;i--;)p=3*t+S(t/2)*i/3e3+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*S(t/.7+i/6e3),i/4-2,199*d,1/(d+1))

Feb 24 2017 6:50 PM UTC

}// 133/140

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u/SpecialAgent

nicely done!
u/Kalanchoe

Flawless!
u/donbright

oh wow, the shading!
u/sigveseb

Good twister! Can we add color?
u/iverjo

Color would be awesome :) Feel free to try to add it
u/sigveseb

https://www.dwitter.net/d/1267 red
u/iverjo

Here's a purple version. Had to make some compromises. https://www.dwitter.net/d/1278
u/donbright

i attempted a rainbow version https://www.dwitter.net/d/1282
u/iverjo

#twister
u/vain

nice twister

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iverjo

function u(t) {

c.width=384;for(i=20;i--;)for(j=9;j--;)if(!i||(i^j)%2){x.fillStyle=R(a=i?0:240),x.fillRect(i*20+j%2*4*S(t)-25+9*S(j),j*20,i?20:420,i?20:2)}

Mar 2 2017 6:29 PM UTC

}// 139/140

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Optical illusion thingy. It's supposed to look like the red lines are not really straight and parallel. #bartjs

u/sfz

it works, trippy!
u/iverjo

Fun fact: This was actually the first idea I ever had for a dweet, back in december 2015 when sigve made https://github.com/sigvef/arktis-tweet-demo/
u/donbright

great illusion
u/SpecialAgent

Expecting a gorilla and some barrels to come hurtling down. Love it.
u/iverjo

#opticalillusion

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iverjo

remix of d/123 by u/icecuber

function u(t) {

i=frame;for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(k,j,i);x.fillRect(i,j,1,S(k/9))}

Feb 22 2017 6:10 PM UTC

}// 140/140

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Color version, a minified version of myJS's suggestion

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u/bakkot

golf'd slightly harder on general principles: i=frame;for(j=1080;j--;x.fillRect(i,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/donbright

niiiice
u/Krachwumm

This is freaking amazing. Even if it would have taken you 1000 characters
u/iverjo

Thanks bakkot! I golfed your version even further down to 134 characters: for(j=1080;j--;x.fillRect(i=frame,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/iverjo

Feel free to play with the colors! There's room for improvement
u/hamptonio

That's a work of art man
u/SpecialAgent

I must commend you! Did my research and got a working mandelbrot, but to golf it to 140 and get the speed is very very difficult! Wow. I will study your dweet now :)
u/iverjo

#fractal
u/iverjo

#mandelbrot
u/iverjo

#slow_render
u/f8f82804

#scanline

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iverjo

function u(t) {

c.width=2e3;for(i=8e3;i--;)p=3*t+i/9e3+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(999+149*S(p)+790*S(t+i/9e3+i%3*4.5),i/6-2,149*d,2/(d+1))

Feb 21 2016 8:54 PM UTC

}// 132/140

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Twisters dancing through each other

u/iverjo

#twister

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iverjo

function u(t) {

c.width=2e3;n=900;for(i=9;i<n;i+=2)s=2/(9.1-(t/2+i/99)%9),x.beginPath(),x.lineWidth=s*s,x.arc(n,240*(1+s)/s,s*99,j=i*9,j+6),x.stroke()

Feb 21 2016 9:06 PM UTC

}// 134/140

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#tunnel

u/joeytwiddle

There appears to be a light at the end of that tunnel
u/joeytwiddle

#hiddengem #lighting

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iverjo

remix of d/1788 by u/iverjo

function u(t) {

c.width=384;for(i=12;i--;x.fillStyle="#fff")for(j=27;j--;c.style.background=R())x.fillRect(84+i*20,29+j*6+15*S(j/8.3)*S(t*2.7-i/2-j/9),16,2)

Jun 3 2018 10:10 AM UTC

}// 140/140

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Inspired by "Wavy square" by #beesandbombs on Twitter

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u/DataMeta

a e s t h e t i c
u/firegodjr

Nice! Be
u/firegodjr

Nice! Be
u/firegodjr

Welp, that's not what I meant. Backspace and enter are very close on mobile. I was going to just post my version here. https://www.dwitter.net/d/8074
u/iverjo

Very nice, @firegodjr! It looks better than mine
u/Qwitter

Slinky Compression Waves

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iverjo

remix of d/894 by u/iverjo

function u(t) {

for(j=1080;j--;x.fillRect(T=frame,j,1,S(k/9),x.fillStyle=R(k,j,T)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+T/540-2,b=2*a*b+j/540-1

Mar 10 2018 12:28 PM UTC

}// 134/140

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Golfed version of the color mandelbrot

u/DirtyDan

I'm a sucker for Mandelbrot dweets. Bravo!
u/iverjo

#mandelbrot
u/iverjo

#fractal
u/iverjo

#slow_render
u/Qwitter

escape time !

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iverjo

function u(t) {

i=W=c.width=960;X=250*t%W;G=(1-S(X/29))*.3;x.lineWidth=80;x.arc(X,200,40,G,6.29-G);x.stroke();while(i>X)x.fillRect(i,190,20,20),i-=190

Jul 22 2016 12:34 AM UTC

}// 134/140

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Pacman, inspired by tamberlo

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u/tamberlo

thank you for cleaning up my idea ;) your solution is very neat
u/iverjo

Thanks :) It lacks the yellow color, though. I'm not sure I could hack that in without removing the rectangles
u/iverjo

Golfed a bit (128 characters): i=W=c.width=960;x.lineWidth=80;x.arc(X=250*t%W,200,40,G=.3-.3*S(X/29),6.29-G);x.stroke();for(;i>X;i-=190)x.fillRect(i,190,20,20)
u/donbright

lol
u/iverjo

#pacman
u/rodrigo.siqueira

#atari

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iverjo

remix of d/598 by u/iverjo

function u(t) {

c.width=1920;for(i=-2;i<2;i+=.05)for(j=-4;j<4;j+=.05)X=j-3*S(t),Y=i+C(t),1/(j*j+Y*Y)+1/(X*X+i*i)>1&&x.fillRect(j*240+960,i*240+540,12,12)

Jan 14 2017 3:56 PM UTC

}// 137/140

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u/nickd3000

A weird remix https://www.dwitter.net/d/6361
u/iverjo

#metaballs

dwitter.net | iverjo (1350)