Dweets awesomed by u/mvs202

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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mvs202

function u(t) {

χ=S(t)*960
c=(h,a,b)=>{χ<0?x.fillStyle=`hsl(${h%360},99%,50%,0.2`:0
x.fillRect(960-χ,a,χ*2,b)}
c(t*53,0,300)
c(t*59,315,150)
c(t*47,480,600)

Aug 4 2018 3:45 PM UTC

}// 140/140

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u/katkip

This can be good as a animated desktop wallpaper
u/magna

Keeps on giving
u/iverjo

#colors
u/lionleaf

Beautiful! Broken on #Edge and some other #browsers though. Should be possible to fix, but tagging it now so it's easy to find later :)
u/mvs202

Yeah, the problem is Edge doesn't like the 4th parameter in hsl() - I would need hsla() for that. Surprisingly, no one bothered by the lack of a closing paran in the hsl function!

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mvs202

function u(t) {

w=c.width|=0
for(i=9;i;){x.moveTo(0,w)
x.fillStyle=R(r=66*i--,g=i&1?-t:t,b=215,.1)
while(b--)x.lineTo(b*9,b^214?r+44*C(b/8+i+g):w)
x.fill()}

Jul 18 2018 3:01 AM UTC

}// 140/140

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mvs202

function u(t) {

c.width|=0
for(i=0;i<8;i++){
a=i+t
x.fillStyle=R(j=64*i,8,8,.3)
x.beginPath()
x.moveTo(w=960,h=540)
x.arc(w,h,h-j,a,a+3*(1+C(a)))
x.fill()
}

Jul 16 2018 12:46 AM UTC

}// 140/140

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u/lionleaf

stylish!

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mvs202

function u(t) {

c.width|=0
r=220+180*C(t/8)
l=t*100%(2*r)-r
a=b=l
s=2*r
do{
x.beginPath()
x.arc(a,b,r,0,6)
x.fill()
a+=s
if(a>2320){a=l;b+=s}
}while(b<1480)

Jul 15 2018 4:05 AM UTC

}// 140/140

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u/iverjo

#dots

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