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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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iverjo

remix of d/582 by u/iverjo

function u(t) {

t>7?(x.fillStyle='#fff',x.fillRect(278+(t|0)*90,155,15,15)):(X=S(S(t*4)*1.5),x.lineTo(960+110*X*X*X,480-546*C(t)+294*C(2*t)),x.fill())

Apr 29 2018 6:07 PM UTC

}// 134/140

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Catwoman, golfed

u/joeytwiddle

Save 18 chars with :s/fill.*Rect/clearRect/

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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

remix of d/1791 by u/Run

function u(t) {

t*=4;c.width*=1;for(i=0;i<1550;i++)x.fillRect(X=i+S(t+i)*300,400+200*C(t+i)+200*S(X/300+t),50,50),x.fillStyle=`hsl(${X/7+t*90},80%,50%)`

Mar 2 2017 10:53 PM UTC

}// 136/140

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u/donbright

the happiest sandworm on dune
u/iverjo

#worm
u/iverjo

#colors #rainbow
u/iverjo

#sine

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iverjo

remix of d/1763 by u/New_Core

function u(t) {

if(!t)a=new(window.AudioContext)(),o=a.createOscillator(),o.type='square',o.connect(a.destination),o.start(a);o.frequency.value=800*S(t)

Mar 2 2017 6:43 PM UTC

}// 136/140

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Remove the a in o.start(a) to start the anoying thing xD

u/iverjo

#bartjs
u/iverjo

Warning: The sound may be louder than you expect
u/iverjo

Looks like it doesn't work in Firefox
u/iverjo

#audio
u/joeytwiddle

#police

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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

function u(t) {

c.width=96;for(i=5184;i--;)X=i%96-48,Y=0|(i/96),z=S(t*3)/4+.5,x.fillRect(X+48,Y,S((X*C(t)-Y*S(t))*z),S((X*S(t)+Y*C(t))*z))

Feb 28 2017 10:17 PM UTC

}// 122/140

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This was my first attempt at creating a rotozoom effect. Created in February 2016

u/iverjo

#rotozoom

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iverjo

remix of d/1278 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;i--;)d=C(p=t+i/3e3+i%4/.637)-S(p),x.fillStyle=R(a=74*d+74,i/t),d>0&&x.fillRect(960+199*S(p)+400*S(t+i/6e3),i/4,199*d,1)

Feb 25 2017 12:55 PM UTC

}// 140/140

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As suggested by donbright

u/iverjo

#twister

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iverjo

remix of d/75 by u/iverjo

function u(t) {

/* LOOK MA, I HAVE ENOUGH SPACE FOR A VEEERY LONG COMMENT! */
c.width^=0;for(i=24;i--;)x.fillRect(960+22*i*C(a=t*i/8),520+22*i*S(a),2*i,2*i)

Feb 25 2017 1:36 AM UTC

}// 140/140

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u/gormisdomai

This is so pleasing to watch!
u/iverjo

My comment is yuge. It is the largest ever. People love it bigly.
u/sigveseb

lol that comment tho
u/iverjo

Golfed: /* LOOK MA, I HAVE ENOUGH SPACE FOR A VEEERY LONG COMMENT! */ for(c.width+=i=0;i<48;i+=2)x.fillRect(960+11*i*C(a=t*i/16),520+11*i*S(a),i,i)
u/AstonC

Tremendous!
u/iverjo

#spiral

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iverjo

remix of d/1232 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;i--;)d=C(p=t+i/3e3+i%4/.637)-S(p),x.fillStyle=R(a=74*d+74,0,a),d>0&&x.fillRect(960+199*S(p)+400*S(t+i/6e3),i/4,199*d,1)

Feb 25 2017 1:23 AM UTC

}// 140/140

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Compromised on the speed and movement to add color

Show more comments…
u/sigveseb

we can golf more!
u/iverjo

Never stop golfing!
u/donbright

replace 0,t with i/t in fillstyle and this looks REALLY weird
u/donbright

oops i mean 0,a
u/iverjo

Cool :) Posted it here: https://www.dwitter.net/d/1308
u/iverjo

#twister

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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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Show more comments…
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

dwitter.net | iverjo (1379)