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

function u(t) {

c.width=2e3;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()

Jul 2 2016 12:54 AM UTC

}// 139/140

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u/lionleaf

What a snek!
u/lionleaf

very snek!
u/iverjo

#worm #snake

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iverjo

function u(t) {

c.width=2e3;n=900;for(i=9;i<n;i+=2)s=3/(9.1-(t/2+i/99)%9),x.beginPath(),j=i*9,x.lineWidth=s*s*3,x.arc(n,240*(2+s)/s,s*99,j,j+.6),x.stroke()

Feb 21 2016 9:05 PM UTC

}// 139/140

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#tunnel

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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

function u(t) {

for(i=13;i--;)k=i!=12,x.beginPath(),x.arc(960+400*k*C(j=i*.523),540+400*S(j),9+50*k,0,7),x.fillStyle=R(a=255*k,a*(i==(t*9%12|0)),a),x.fill()

Jan 28 2017 6:59 PM UTC

}// 140/140

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Optical illusion: Look at the center dot for at least 5 seconds. What you should see is that the missing dot becomes light green. Keep staring at the same point for another 10-30 seconds, and you might notice that some pink dots will "disappear". This is due to cone fatigue in your eyes.

u/iverjo

Two characters can be shaved by replacing k=i!=12 with k=!!i
u/lionleaf

Haha, amazing!
u/iverjo

#opticalillusion

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iverjo

remix of d/553 by u/iverjo

function u(t) {

a=13;for(i=0;i++<1e3;)s=45/(9-(t+i/99)%9),x.fillStyle=R((d=i*119)%256,d/1.4%256,d/7%256),x.fillRect(960+5*s*C(h=i*a+t),540+5*s*S(h),s,s)

Dec 23 2016 1:35 PM UTC

}// 136/140

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Play with the a variable

u/joeytwiddle

I did ask you asked! https://www.dwitter.net/d/3600

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iverjo

remix of d/413 by u/iverjo

function u(t) {

c.width=1e3;for(i=151;i--;)v=t-i/9,x.fillStyle='red',x.font=12+i+C(v*19-8)/(v*v)+'px A',v>0&&x.fillText((''+u)[i],490+i*5*S(v),280+i*2*C(v))

Aug 11 2016 12:13 PM UTC

}// 140/140

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u/katkip

awesome

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iverjo

function u(t) {

r=Math.random;if(t<22)for(i=8e3;i--;)X=2e3*r(),x.fillStyle=R(c=99+129*(S(X/399)+1)*r(),c,c),x.fillRect(X,1080*r(),3*T(i)*r(),r()/(t/2+1))

Jul 22 2016 12:45 PM UTC

}// 137/140

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Brushed aluminium

u/greentec

metal! yeah
u/sigveseb

Now do rock :D
u/sigveseb

\m/
u/iverjo

#texture

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iverjo

function u(t) {

for(i=6e3;i--;)s=149/(i+200),p=i/97+t*2,c=S(p)*199+T(p)*19,x.fillStyle=R(c,y=99+c,y,.1),x.fillRect(2e3*(T(i/9)+s*t)%2e3,3e3*s-74,q=99*s,q)

Jul 21 2016 3:38 PM UTC

}// 138/140

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Go fullscreen and imagine that you are in a boat travelling to the left. Imagine that you are looking through a wet window, and notice the raindrops that are sliding down the window.

u/PhiLho

Nice! Actually, I see more Peter Gabriel's first solo album cover: http://www.soundstation.dk/images/products/l…
u/iverjo

#water

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iverjo

remix of d/13769 by u/iverjo

function u(t) {

X=S(S(t*4)*1.5),x.lineTo(960+110*X*X*X,480-546*C(t)+294*C(2*t)),t<7&&x.fill();x.clearRect(278+~~t*90,155,15,15)

Jan 14 2021 12:43 PM UTC

}// 111/140

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Catwoman, golfed with a little help from u/joeytwiddle and u/pavel

u/Qwitter

meowzers

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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/

dwitter.net | iverjo (1374)