Dweets awesomed by u/Agnes

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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Agnes

function u(t) {

with(x)for(c.width|=j=200;j--;fill())beginPath(r=~~(j/20)),arc(960+r*50*S(a=.314*(j%20))+25*S(M=t*S(t+j/200)),540+50*r*C(a)+25*C(M),2*r,0,7)

Jul 23 2018 10:20 AM UTC

}// 140/140

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Gelatinous tunnel

u/Xen

Nice!
u/aleamb

Coool!!
u/recoder

Hypnotic!
u/fujimotos

#tunnel

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Agnes

function u(t) {

A=t?A.filter(e=>((N=t-e.i)<5)|x.beginPath(x.fillStyle=R(T=51*N))|x.arc(e.x,e.y,T,0,7)|x.fill()):[];A.push({x:(M=t+t**t)%1920,y:M%1080,i:t})

Jul 16 2018 3:00 PM UTC

}// 139/140

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u/DataMeta

Verrrrry cool!

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Agnes

remix of d/8853 by u/soggypretzels

function u(t) {

c.width|=0;for(i=999;i--;){q=(i%2*2-1);x.rect(i*30-(q*t*9)-6000+q*i/9,q*300+(S(t+i/5)*99*q)-99,30,999)}x.fill('evenodd');

Jul 13 2018 8:50 PM UTC

}// 121/140

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Just showing how the weird "evenodd" argument to fill can let you not have to do globalCompositeOperation!

u/Xen

nice

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micahcowan

remix of d/8761 by u/magna

function u(t) {

c.width=240
with(x)font='6em"',fillText('👌',110,110),setTransform(0,-1,-1,0,160,30),fillText('☝️',-110,100+S(t*10-8*S(5*t/12))*10)

Jun 27 2018 8:14 PM UTC

}// 130/140

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u/magna 's NSFW, golfed, and with "variable intensity" ;)

u/micahcowan

#emoji
u/Galaxtone

105,92 works better for me
u/Galaxtone

probably depedent on browsers tho.
u/katkip

No #nsfw pls

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Agnes

remix of d/8761 by u/magna

function u(t) {

c.width=240
with(x)font='6em"',fillText('👌',110,110),rect(0,0,160,1e4),clip(),setTransform(0,1,-1,0,160,30),fillText('☝️',0,100+30*S(t*4))

Jun 27 2018 8:06 PM UTC

}// 138/140

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Proof of concept. Christ, what am I doing with my life #sex

Show more comments…
u/Agnes

(You may have to tweak the numbers to get it to line up with your emoji set, it looks all right for me on Windows/Chrome)
u/micahcowan

Fixed for Mac/Chrome: c.width=240 with(x)font='6em"',fillText('👌',107,110),rect(0,0,160,1e4),clip(),setTransform(0,-1,-1,0,0,140),fillText('☝️',0,-65+30*S(t*4))
u/micahcowan

(I was thinking it would look better with a clip() when I saw u/magna's. Nice!)
u/katkip

ew
u/Purpzie

no thanks
u/f8f82804

#emoji

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Agnes

function u(t) {

with(x)for(scale(s=t?1:100,s),fillRect(0,0,Q=255,Q),i=9;i--;fillStyle=R(Q*=!!i,Q,Q,.02))fillRect(4+i+S(t)*3,4-T(T=Math.random),.5,2*(1+T()))

Jun 27 2018 8:40 AM UTC

}// 140/140

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Wonky spooky default

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Agnes

function u(t) {

i=new Image();u=[...c.toDataURL()];for(j=1+~~t*100;j--;u[~~(Math.random()*u.length)]="a");i.src=u.join("");i.onload=()=>x.drawImage(i,0,0);

Jun 5 2018 11:57 AM UTC

}// 139/140

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Corrupting PNG data. There's probably a dweet out there that does exactly this already, because I stole the idea from the Github wiki.

u/Agnes

#png #toDataURL #glitch

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Agnes

remix of d/8355 by u/BirdsTweetCodersDweet

function u(t) {

for(i=M=1e3;i--;)x.fillStyle=R(q=255*i/M,255-q,255-q,.1),x.fillRect(S(t+i/500)*(100+t*50)*C(t*q)+960,C(t+i/500)*C(t*q)*(100+t*50)+540,5,5)

Jun 4 2018 11:29 AM UTC

}// 138/140

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Grainy-looking red/turquoise spiral

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Agnes

function u(t) {

with(x)for(l=1600;l--;T=l%100)F=t+25*S(l+t/T),fillStyle=R(q=1e4/T,l/(h=T+T/12),q,.01),beginPath(fill()),arc(960+T*F*C(h),540+T*F*S(h),T,0,7)

May 29 2018 10:40 AM UTC

}// 140/140

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I was trying to make a lotus flower thing but it turned into a 90s tie-dye pattern instead.

u/magna

Nice!

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Tesseract

function u(t) {

x.strokeStyle=R(9,t?(i+=2)/9:i=0,0,.3)
for(j=3e3;j--;x.beginPath(x.stroke()))l=(k=i|j)&-k,x.arc(j,i,(x.lineWidth=l/(l&i&j?.707:1))/18,0,7)

May 25 2018 5:26 AM UTC

}// 138/140

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#fractal

u/Tesseract

Arc radius and line width are semi-interchangeable

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