Dweets awesomed by u/blimp

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: #ScaryMovies

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zox

function u(t) {

w=c.width|=0
for(i=1;i<9;i++){
x.arc(w/2,540,150+(45*i),S(t),7*S(t))
x.arc(w/2,540,150+(28*i),7*S(t),S(t))
x.lineWidth=2+T(t+i)
x.stroke()}

Feb 18 2018 5:30 AM UTC

}// 139/140

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u/aleamb

Capsule Corp. :)

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akm

remix of d/6976 by u/SnakeBearSoftware

function u(t) {

with(x)for(c.width|=i=37,globalCompositeOperation='xor';i--;beginPath(fill()))arc(960+S(n=i*(C(t*2)*.3+6.3))*n-C(n),540+S(n)-C(n)*n,i*i,0,7)

Feb 18 2018 12:12 AM UTC

}// 140/140

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Thanks to u/BirdsTweetCodersDweet for the help with the oscillating function!

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AnnanFay

remix of d/6966 by u/Xen

function u(t) {

c.width|=i=128
with(x)
for(globalCompositeOperation='xor';i--;beginPath(fill()))
arc(
X=960+C(n=i*t)*9,
Y=540+S(n/3)*C(t*9)*9,
R=i*5,
0,7
)

Feb 17 2018 3:26 AM UTC

}// 139/140

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u/iverjo

Moiré party

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blimp

function u(t) {

w=c.width+=i=0;for(;i<w;q=i/w,x.fillStyle="#800000"+(i),x.fillRect(w*.80*(q*S(t-i/2)*C(t+q+50)),10000*(1.+q*S(q*t/1.5+i)),3000*w,35*q),i++);

Feb 16 2018 9:15 PM UTC

}// 140/140

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fons

remix of d/6933 by u/davidsharp

function u(t) {

c.width|=0;x.font='3cm A';'ἕν οἶδα ὅτι οὐδέν οἶδα'.split('').forEach((c,i)=>x.fillText(c,80*i,1080-Math.abs(t*50*S(2*i))))

Feb 16 2018 11:46 AM UTC

}// 122/140

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dogspace

remix of d/6861 by u/sj_

function u(t) {

c.width|=0
for(var i = 0; i < 100; i += 0.01) {
b=1080-t*i*2
x.fillRect(
 c.width/2 + C(i) * b,
 c.height/2 + S(i) * b,
10,10)}

Feb 16 2018 12:51 AM UTC

}// 127/140

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limacon is my fav polar shape

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fons

remix of d/5238 by u/Yogeshp3

function u(t) {

for(a=10,w=960,h=540,c.width|=0;a>0;a-=.02){
	x.moveTo(w+h*C(a),h+h*S(a));
	x.lineTo(w+h*C(a*t/4),h+h*S(a-t/4))
}x.stroke();

Feb 15 2018 8:04 PM UTC

}// 124/140

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u/Feiro

Cool!

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akm

remix of d/6670 by u/akm

function u(t) {

c.width|=0
with(x){for(i=140,l=500;i--;lineTo(m,k))n=S(t-i*C(.1*t))*3e2,arc(m=i*18-120,k=-n+l,30,0,6.283,moveTo(m+220,n+l))
fill(stroke())}

Feb 14 2018 3:56 AM UTC

}// 139/140

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blimp

function u(t) {

c.width=925;
for(i=10;i<200;i++) 
for(j=1;j<10;j++,x.fillStyle=R(j+6,j*60,j*0.09))x.fillRect(450+C(i)*350,250+S(i)*4.25*S(t/+j)*60,8,3);

Feb 12 2018 6:27 PM UTC

}// 136/140

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unts-unts-unts-unts

function u(t) {

for(j=0;j++<80;)
for(i=0;i++<10;){
x.fillStyle=R(X=i*j%256,128*(1+S(j*t)),256-X)
x.fillRect(960+12*j*C(s=i*t/3),540+12*j*S(s),12,12)}

Feb 9 2018 3:41 PM UTC

}// 133/140

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u/dogspace

woahh!

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