Dweets awesomed by u/alice-mx

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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jylikangas

function u(t) {

for(c.width=W=i=512,t*=w=99;--i;x[f](225-z+(t--&2?z*2:t&9?0:z)+S(t/w)*i,w+z,z/=7,z))z=2e3/i,x[f='fillRect'](!x[f](i,0,S(t/W),w),w+z/32,W,.5)

Nov 20 2018 4:55 PM UTC

}// 140/140

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I drove all night (and day)

u/cantelope

amazing! #road #synthwave
u/pavel

The backdrop is glitched on mobile Safari.
u/jylikangas

137b: for(c.width=W=i=512,t*=w=99;--i;x[f](225+(t--&2?z:t&9?-z:0)+S(t/w)*i,w+z,z/=7,z))z=2e3/i,x[f='fillRect'](!x[f](i,0,S(t/W),w),w+z/32,W,.5)
u/iverjo

Wow!
u/taupelink

#scene

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alice-mx

remix of d/10837 by u/veubeke

function u(t) {

c.width^=0
x.font='200px"',
x.fillText('🛸',800+C(t)*280,540)
for(i=27;i--;)x.drawImage(c,500,405+i*5,800,5,500+C(i/2+t*8)*8,700-i*5,800,5)

Nov 6 2018 1:13 AM UTC

}// 138/140

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a spooky spaceship

u/joeytwiddle

Nice #water ripple effect #ufo

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alice-mx

remix of d/10786 by u/pavel

function u(t) {

for(i=100;i--;)
for(j=50;j--;)
x.fillStyle=`hsl(${(t*50)%360},50%,50%)`,
s=20*S((i|j)-t/2)**20,
x.fillRect(10+20*i-s/2,10+20*j-s/2,s,s)

Nov 5 2018 4:54 AM UTC

}// 135/140

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mmmm patterny goodness

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alice-mx

remix of d/10838 by u/rodrigo.siqueira

function u(t) {

for(i=128;i--;)
for(j=64;j--;)
v=S(t*10)*120+120,
x.fillStyle=R(j*3,i*2,v,0.2),
s=150*T((i&j)-t/3),
x.fillRect(15*i-t+v,9*j-s/2,20,20)

Nov 5 2018 4:36 AM UTC

}// 134/140

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sweet 9 fps

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alice-mx

remix of d/10829 by u/magna

function u(t) {

x.strokeStyle=`hsla(${t*50%360}, ${S(t)*25+50}%, 50%, 0.2)`;
for(i=999;i--;x.stroke())x.arc(480+i,270-i,(i/29)**S(t)*119,~x.beginPath(),7)

Nov 5 2018 4:27 AM UTC

}// 138/140

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Xen

remix of d/10835 by u/magna

function u(t) {

t||(a=Array(w=2e3).fill(0))
x.drawImage(c,0,0,w,w,0,5,w,w)
for(i=w;i--;x.fillRect(i,0,1,5))x.fillStyle=`hsl(${a[i]+=i*C(i/299+t)},99%,50%`

Nov 5 2018 3:48 AM UTC

}// 138/140

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u/katkip

#moire

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veubeke

function u(t) {

c.width^=0
x.font='200px"',
x.fillText('Mirrored',590,540)
for(i=27;i--;)x.drawImage(c,500,405+i*5,800,5,500+C(i/2+t*8)*8,700-i*5,800,5)

Nov 4 2018 6:48 PM UTC

}// 136/140

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Xen

remix of d/10794 by u/jylikangas

function u(t) {

for(c.width=i=v='-1';i++<9;v+=1)x[f='fillText'](v+"x"+v+"="+v*v,99-i*9,30+i*9),x[f](`🕴️`,X=99-i*7-C(t+i)*9,230-X-S(X)),x[f]('🌴🐪',i**5,64)

Nov 1 2018 11:37 PM UTC

}// 137/140

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tiny tweak to the original

u/BirdsTweetCodersDweet

Niice :D
u/Xen

#landscape

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Xen

function u(t) {

x.beginPath(x.fillStyle=`hsla(${t*99},90%,50%,.01)`),x.fill(x.arc(1e3,500,600+C(t)*500,t*3,-t))

Nov 1 2018 8:45 PM UTC

}// 95/140

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alice-mx

remix of d/10753 by u/alice-mx

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<999;i++){
v=~~(i/20)
x.fillRect(i%20*100+v%2*(t*99)%100,v*50,S(i*t/105)*50,50)
}

Nov 1 2018 6:16 AM UTC

}// 124/140

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u/d0n.key

my eyes

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