Dweets awesomed by u/chunnoo

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: #Opposites

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Froff

function u(t) {

e=u.toString();b=Math.floor;a=b(9*t);x.fillText(e.charAt(a),a*96%1920,(b(a/20)+1)*99);x.font='99px A'

Mar 16 2016 11:05 AM UTC

}// 101/140

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u/BirdsTweetCodersDweet

Whoa... meta!

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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

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

function u(t) {

X=Y=999,a=0,d=50*t;for(i=0;i++<6;)x.beginPath(),x.moveTo(X,Y),X-=d*S(a),Y-=d*C(a),i>t&&x.lineTo(X,Y),d*=.6,x.stroke(),a+=Math.random()-.5

Feb 21 2016 9:04 PM UTC

}// 137/140

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#tree #bush

u/iverjo

#random

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iverjo

function u(t) {

x.strokeStyle=R(9,t*23);d=99,X=960,Y=X-d*t,a=0;for(;t++<7;)X-=d*S(a),Y-=d*C(a),x.lineTo(X,Y),d*=.7,x.stroke(),a+=(Math.random()-.5)/(t/5+.3)

Feb 21 2016 9:03 PM UTC

}// 140/140

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It becomes different every time you run it, because it uses Math.random

u/iverjo

#tree #random

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Froff

function u(t) {

p=Math.PI;x.fillRect(200*(C(t+p/2)+C(1.5*t+0.5*p)/2+5),200*(S(t-1.5*p)+S(1.5*(t+p))/2+3),9,9);x.fillRect(300*(C(t))+1000,300*(S(t))+600,9,9)

Feb 3 2016 4:56 PM UTC

}// 140/140

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u/erin

nice

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sigveseb

function u(t) {

x.globalAlpha=0.1;x.drawImage(c,1*S(t),-2);x.fillStyle=R(99,S(t*60)*99,0);x.globalAlpha=1;x.fillRect(Math.random()*2e3,642,100,2);

Jan 8 2016 1:46 AM UTC

}// 130/140

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iverjo

function u(t) {

c.width=198;X=Y=99,a=0,d=9;for(i=0;i++<30;)x.beginPath(),x.moveTo(X,Y),x.lineTo(X-=d*S(a),Y-=d*C(a)),d*=.9,x.stroke(),a+=S(2*t-i/12)/3

Jan 8 2016 1:22 AM UTC

}// 134/140

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u/stiaje

Nice blurring!
u/iverjo

The blur wasn't meant as a part of the effect. I believe it was done as a compromise to save a few bytes at a point during the process of creating the dweet
u/katkip

#plant

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