Dweets awesomed by u/nashcat

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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katkip

function u(t) {

x.fillRect(0,0,2e3,2e3);for(j=800;j--;)
x.clearRect(960+S(j+C(t+j))*300,540+C(-j+S(t+j))*300,10+S(-Math.LN10+j+t)*5,10+S(Math.E*2+j+t)*5)

Dec 22 2018 2:56 PM UTC

}// 137/140

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3D string creates right angles! #d3 #math

u/magna

Right...

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ellisk1

function u(t) {

x.scale(t+=1,t);for(k=4e3;k--;x.fillRect(z=k%34+S(k)*(w=k/2e4),w*4+C(z/5+t)+1,w/2,w))x.fillStyle=S(k*k)<.6?R(0,80+S(k)*50):R(k,k%9*k,k%3*k)

Dec 21 2018 1:28 AM UTC

}// 139/140

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Merry Christmas

u/ellisk1

#christmas #tree

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New_Core

function u(t) {

for(c.width|=f=i=300;i--;i<9?(x.arc(960+a*30,b+i*90,20,0,7),x.fillStyle=R(i*f,50),x.fill()):0)x.rect(960,b=i*3+50,a=i*S(i*9+t),5*S(i)+9)

Dec 20 2018 3:24 PM UTC

}// 136/140

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Merry Christmas

u/cantelope

#christmas #tree

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pavel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡩㵣⹷楤瑨簽栽ㄮ㔷〸㭪㵩ⴭ㸾㔻獴牯步⠩⥳整呲慮獦潲洨㤬〬〬㤬⡩☳〩⨸ㄬⴭ横ㄶ㈩Ɫ敧楮偡瑨⡲潴慴攨栯⠱⬱改⨪匨琫⡩㸾ㄩ⨨樫ㄩ⤩⤩ⱡ牣⡰㵩┲⨱㠭㤬瀬㤬愽㈪株椬愫栩`.replace(/u(..)/g,"$1%")))

Dec 20 2018 12:45 AM UTC

}// 132/140

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u/katkip

Cool
u/magna

#truchet
u/pavel

with(x)for(i=c.width|=h=1.5708;j=i-->>5;stroke())setTransform(9,0,0,9,(i&30)*81,--j*162),beginPath(rotate(h/(1+1e9**S(t+(i>>1)*(j+1))))),arc(p=i%2*18-9,p,9,a=2*h*i,a+h)

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LimeLaser

function u(t) {

r=Math.random;(p=window.p||Array(6000).fill(0).map(()=>({x:1920*r(),y:1080*r()}))).map((d)=>{d.x=d.x>1920?0:d.x+1;x.fillRect(d.x,d.y,1,1)})

Dec 14 2018 7:19 AM UTC

}// 139/140

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Fade to Black / Persisting Values POC (CPU Intensive)

u/katkip

It is satisfying to watch

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jylikangas

remix of d/11356 by u/veubeke

function u(t) {

c.width=300+C(t**t)
for(j=10;--j;)for(i=400;k=i-->>4;x.fillRect(i%8+j*29,80+k+T(t*v)%k-(t>j)*(t-j)*99,1,k))x.fillStyle=R(v=i>352?i:0,v/C(i))

Dec 12 2018 7:14 AM UTC

}// 140/140

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Veubeke's #default rockets ready for launch!

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jylikangas

function u(t) {

eval(unescape(escape`景爨硛昽≦楬汒散琢崨〬〬眽㙥㌬眩ⱴ⨽㤹Ⱪ㴳㔰㬭⵩㭸⹦楬汓瑹汥㵒⡩ⱸ学崨含⡴☲⤪稭欯㈬夽稪㈫启㈬稯㔫欪㌬稯㠩ⱔ㴹㘰⭓⡓⡴⼹㤩⨲⤪㤹⵺ⰮㄫⅫ⤬硛晝⡔⵺⨳ⱙⱺ⨸Ⱝ琯㤥㤪欩⥺㵷⽩Ⱬ㴡⠭⵴☱㔩⩺`.replace(/u(..)/g,"$1%")))

Dec 11 2018 10:29 AM UTC

}// 140/140

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Ghost Train v2

u/jylikangas

HD resolution, brighter, clean beginning, different tunnel and more complex path
u/metamero

https://youtu.be/kNkvepA4AZU yeah yeah yeah yeah yeah
u/f8f82804

#outrun #ethereal
u/vain

holy cow! How is this possible? Incredible !!!

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pavel

function u(t) {

for(c.width|=i=60,x.scale(5,5);i--;x.ellipse(192,20+o*160,o?60:80,o?30:15,0,a=(i>>1)*(o-.5)*.42+S(3*t)*.7,a+7))o=i+i/2&1
x.stroke()

Dec 11 2018 1:37 AM UTC

}// 131/140

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Twisted Cylinder #beesandbombs

u/pavel

Single stroke call and only ellipse to draw. The lines are canvas connecting the various ellipse draw cal into a single stroke, I just manage the start angles.
u/pavel

o determines which ellipse, 0 is top and 1 is bottom. It goes: top, bottom, bottom, top. Four-cycle to draw two vertical lines and reset. The angle increments every 2 so top and bottom angle is the same.
u/jylikangas

Thanks for writing about the tricks in your dweets.

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ellisk1

remix of d/11374 by u/ellisk1

function u(t) {

with(x)for(j=9;j--;stroke())beginPath(strokeStyle=`hsl(${t*j},90%,50%)`),arc(Y=540,Y,450,t+=a=1.57,b=t+a),arc(Y-99*S(t),Y+99*C(t),350,b,b+3)

Dec 10 2018 2:44 PM UTC

}// 140/140

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Twisting Ring v2

u/ellisk1

Hopefully this one works in safari
u/veubeke

It does :)

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jylikangas

function u(t) {

with(x)for(fillRect(0,0,2e3,2e3),fillStyle="#ccc",shadowColor=R(i=9);i--;fillRect(512+i*99+X/4,400,50,200))X=shadowBlur=(1+S(i/2+t*4))*40

Dec 9 2018 5:18 PM UTC

}// 137/140

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Grey #default

u/lionleaf

That's amazing!
u/joeytwiddle

mmm milky
u/Koi

So satisfying
u/vain

very cool

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