Dweets awesomed by u/Xen

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: #Food

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cantelope

remix of d/10234 by u/Purpzie

function u(t) {

for(c.width=-1,з=0,_=[ф=1,п=ф];з++-20;)_.push(п+=_[з-ф]);x.fillText(_,0,9)

Oct 4 2018 4:42 PM UTC

}// 74/140

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u/magna

#fibonacci
u/magna

18 characters longer, avoids loop: x.fillText([c.width=-1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,67],-3,9) :D
u/donbright

#oeisA000045

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atsn

function u(t) {

window.location=`/id/${Math.floor(Math.random()*10212)}`

Oct 4 2018 7:43 AM UTC

}// 56/140

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On the off chance this hasn't been done before.

u/katkip

GENIUS #external
u/katkip

Not really external but you get the point. It has been already done but a different way.

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THORinHOOD

function u(t) {

w=c.width=1920
h=1080
s=20
q=h/4
for(j=0;j<q;j+=40)for(i=1,d=t;i<99;i++)d-=C(t)/i,x.fillRect(w/2*(C(d)*S(d)+1),-Math.exp(S(d))*h/4+h-j,s,s)

Oct 3 2018 8:32 PM UTC

}// 139/140

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Purpzie

remix of d/10210 by u/Purpzie

function u(t) {

r=[0,1];for(i=2;i<1e3;i++)r.push(r[i-1]+r[i-2])
x.font='99px"'
x.fillText(r.join(' '),0,500)

Oct 3 2018 8:31 PM UTC

}// 92/140

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Fibonacci sequence! Only 46 characters are actually used to generate it, feel free to modify it or use it in your own dweets.

u/donbright

awesome

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MAxSaL

function u(t) {

c.style.bg=R();for(i=0;i<20;i++){x.fillStyle=R(C(t*i)*255,T(t)*255,S(t*i)*255);x.fillRect(i+T(C(t))*t*5+i*100,500+C(t)*i,50,C(t)*500+t*10)}

Oct 2 2018 7:25 PM UTC

}// 139/140

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Hmm... It locked a bit different when I made it. It seems, I cannot use c.style.bg

u/donbright

still got a nice rhythym

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E-Mouse

remix of d/10186 by u/E-Mouse

function u(t) {

x.beginPath()
c.width|=0
x.stroke()
for(i=500;--i;)
x.lineTo(C(k=i-t)*900+900,T(k)*400+500)
x.fill("evenodd")

Oct 2 2018 6:14 PM UTC

}// 109/140

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u/donbright

interesting

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Xen

function u(t) {

x.font='99px"',x.globalAlpha=.1,x.fillRect(0,0,2e3,1e3)
for(i=499;i--;)x.fillText('🔥',1e3+S(i+t*C(t*t-i%9))*(2e3-i*4),1e3-i/9*(t*i%15))

Oct 2 2018 5:30 PM UTC

}// 135/140

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u/donbright

awesome

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veubeke

function u(t) {

r=c.offsetWidth/(c.width^=0)
t?o?(m+=o/60,n+=p/90):0:o=!(m=n=300)
c.onmousemove=e=>(o=e.x/r-m,p=e.y/r-n)
x.font='80px"'
x.fillText('🚁',m,n)

Oct 2 2018 2:54 PM UTC

}// 139/140

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Surveillance helicopter – it only sees you when you move

u/donbright

hmm my firefox doesnt seem to like it
u/donbright

oh now it works! re-scrolled and scrolled back here. nice.
u/joeytwiddle

#interactive

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prplz

remix of d/9912 by u/prplz

function u(t) {

for(c.width|=0,i=17e3+t*99;i>0;i-=100)x.fillRect(i%1920,i%1080,i%99,i%99)

Oct 2 2018 5:40 AM UTC

}// 73/140

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u/iverjo

This reminds me of the old Windows 3.1 days

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yonatan

remix of d/10211 by u/BalintCsala

function u(t) {

for(k=i=1e3;z=i--/6;x.fillRect(k+S(m=(k*j&-b)**4)*r-z,z+C(m)*r,s=5e3/z,s))b=i%9>0,j=(i/k+t)%1,r=8e3/z+b*k/z,x.fillStyle=R(a=S(j*9)*99+z,a,a)

Oct 2 2018 5:23 AM UTC

}// 140/140

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Strange crystals v0.140b

Show more comments…
u/joeytwiddle

Blimey!
u/robbyg

I would love to read a write-up of this some time!
u/BalintCsala

They aren't really complicated, they draw a circle of rectangles with a pseudo random displacement to make it seem more natural. The track is just a bunch of rectangles
u/richev

Maybe not complicated once you understand how it works, but sure seems complicated to me. As @robbyg said, I'd love a detailed write-up.
u/yonatan

write-up: http://zozuar.org/txt/sc/
u/Joachim

#tunnel #cavern

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