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.

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

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iverjo

remix of d/464 by u/iverjo

function u(t) {

for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+t*6e-10-1,b=Math.abs(2*a*b)+j/1e11-1;x.fillRect(t*60,j,1,S(k/9))}

Feb 23 2017 5:10 PM UTC

}// 126/140

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Burning ship fractal. Feel free to play with the parameters to find other interesting locations in the fractal

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iverjo

remix of d/50 by u/iverjo

function u(t) {

k=260;c.width=2e3;for(i=9;i++<5*k;)p=t+i/k+i%8*5,s=3/(10-p%9),x.beginPath(),x.arc(79*T(p*S(t/9)+1)+i%8*k,550*s,49*s*S(i/k),i,i+7),x.stroke()

Jan 14 2017 4:28 PM UTC

}// 140/140

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u/hamptonio

Its like a C.elegans dance party.
u/CliffJonesJr

Leeches!!!

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iverjo

remix of d/8988 by u/katkip

function u(t) {

C=1e3;for(i=99;i--;)for(j=40;j--;)Y=3+S(i/3)*S(j/5+t*3),x.fillStyle=R(0,Y*50),x.fillRect(C+C*(i-t-25+S(t)*2)/j,C*Y/j,s=999/j,s)

Aug 1 2018 5:07 PM UTC

}// 127/140

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#landscape #perspective

u/magna

🐑

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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

function u(t) {

for(i=8e3;i--;)s=149/(i+400),c=S(8e3*s-t*7),x.fillStyle=R(9,99+99*c,159+99*c,.2),x.fillRect(2e3*(T(i/9)+s*t)%2e3,3e3*s,q=99*s,q)

Jul 20 2016 3:55 PM UTC

}// 128/140

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Water

u/magna

Awesome!
u/iverjo

#water

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iverjo

function u(t) {

X=960+290*C(t),Y=440+290*S(t),a=t*2,d=190;for(i=9;i--;)x.beginPath(),x.moveTo(X,Y),X-=d*S(a),Y-=d*C(a),x.lineTo(X,Y),d*=.5,x.stroke(),a+=.5

May 6 2016 10:43 PM UTC

}// 139/140

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iverjo

function u(t) {

X=960,Y=540,a=t*2,d=90;for(i=0;i++<9+t;)x.beginPath(),x.moveTo(X,Y),X-=d*S(a),Y-=d*C(a),x.lineTo(X,Y),d*=.9,x.stroke(),a+=Math.random()-.5

Feb 21 2016 9:04 PM UTC

}// 138/140

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#random

u/Purpzie

Shortened by 6 characters: with(x)for(X=960,Y=540,a=t*2,d=90,i=0;i++<9+t;moveTo(X,Y),lineTo(X-=d*S(a),Y-=d*C(a)),stroke(),d*=.9,a+=Math.random()-.5)beginPath()
u/katkip

#plasm
u/joeytwiddle

#organic #plasma
u/UEZ

#iris

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iverjo

remix of d/379 by u/iverjo

function u(t) {

c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*C(b)+2),s)

Feb 24 2017 6:41 PM UTC

}// 114/140

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u/donbright

great 3d effect
u/iverjo

Thanks :)
u/hamptonio

really nice
u/5Mixer

Epic!

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iverjo

function u(t) {

for(i=0;i<2400;i++)x.beginPath(),x.arc(960+i*C(i/20),540+i*S(i/20)/3,29+i*i/2e4,0,7),x.fillStyle='#'+['000','A0E','FFF','9F0'][i%4],x.fill()

Jan 28 2017 10:00 PM UTC

}// 140/140

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Optical illusion: Go fullscreen and glance at the different parts of the image. As you move your eyes, it may seem like other parts of the image moves slightly.

Show more comments…
u/iverjo

This needs a large and bright display to work
u/donbright

lol i kept looking for 't' in your code, not there!
u/iverjo

Haha!
u/CliffJonesJr

I love these illusion dweets. Nice!
u/iverjo

Thanks :)
u/iverjo

#opticalillusion

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iverjo

remix of d/197 by u/iverjo

function u(t) {

c.width^=0;n=900;for(i=9;i++<n;)p=t+i/99,s=3/(9.1-p%9),x.beginPath(),x.lineWidth=s*s,x.arc(n+99*S(p),300*s,49*s*S(i/159),i,i+1),x.stroke()

Feb 24 2017 6:44 PM UTC

}// 138/140

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Snek!

u/joeytwiddle

Bless the coming and going of Him. May His passage cleanse the world.
u/iverjo

#3d

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