Dweets awesomed by u/RomanW

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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sigveseb

remix of d/408 by u/sigveseb

function u(t) {

c.style.margin='-99px 0';for(i=c.width=256,x.font='32pt a',x.fillText('🇳🇴',0,32);i--;)x.drawImage(c,i+(a=4*C(i/9+t*9)),0,1,64,i,80-a,1,99)

Aug 9 2016 7:12 AM UTC

}// 138/140

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It's a flag, but it doesn't render on Windows. Emojis suck a little :P

u/joeytwiddle

#flag

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iverjo

function u(t) {

c.width=1920;for(j=64;j--;)for(i=120;i--;)a=1+S((i^j)/9+4*t|0),x.fillStyle=R(a*30,160-a*30,a*50+30*S(t),a/2),x.fillRect(i<<4,j<<4,16,16);

Jul 21 2016 5:28 PM UTC

}// 137/140

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u/sigveseb

woop, the gameboy colors are back!
u/iverjo

\o/

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iverjo

function u(t) {

c.width=2e3;n=899;for(i=9;i<n;i+=2)s=2/(9.1-(t/2+i/99)%9),x.beginPath(),j=i*.9+t,x.lineWidth=s*s*4,x.arc(n,540,s*99,j,j+.9),x.stroke()

Jul 16 2016 8:43 PM UTC

}// 134/140

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#tunnel

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icecuber

function u(t) {

c.width=1920;for(i=24;i--;)for(j=24;j--;)t+=1.7,s=S(t)*((j+i&1)*2-1),x.setTransform(C(t),s,-s,C(t),i*99,j%12*99),x.fillRect(-9,-49,19,99)

Apr 20 2016 4:54 PM UTC

}// 137/140

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u/lionleaf

Try following the "wave" with your eyes!
u/innovati

This is amazing!
u/vain

amazing and beautiful effect. Nice tricky illusion

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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

You've reached the end.

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