Top dweets by u/pythech

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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pythech

function u(t) {

c.width|=0
with(x)for(translate(900,500),i=10*t;i-->0;fill())beginPath(fillStyle='red'),arc(5*i,0,20*C(i*.9)+30,0,9),rotate(-Math.PI*2*.618)

Jun 18 2018 3:43 AM UTC

}// 140/140

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.618 is an approximation to the golden ratio. Putting .5 == 1/2 will create 2 spokes. Similarly .6 == 3/5 will create 5 spokes.

u/pythech

Inspired by Numberphile: https://www.youtube.com/watch?v=sj8Sg8qnjOg
u/DataMeta

I really dig it!
u/aleamb

love it!
u/zanella

You had me at "golden ratio".

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pythech

remix of d/8694 by u/pythech

function u(t) {

c.width|=0
with(x)for(i=1e3;i--;fill())beginPath(fillStyle=i%2?'#fffe':`hsl(${t*i/3},99%,50%)`),arc(60*(i/3)-t*74,500+400*S(i*t/30),200,0,9)

Jun 22 2018 6:06 AM UTC

}// 140/140

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#waitforit

u/Galaxtone

Oh my gawd, it just keeps going
u/Galaxtone

I like the bits when it gets stable and makes a line of rainbow, and... it's gone.
u/pythech

#epilepsy alert

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pythech

remix of d/8520 by u/pythech

function u(t) {

x.beginPath()
c.width|=0
for(i=t*1.2;--i>0;) {
x.arc(S(i)*C(t)*300+900,700,19+i**Math.min(t,20),0,9,1)
}
x.fill("evenodd")

Jun 10 2018 1:14 AM UTC

}// 122/140

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tunnels

u/lionleaf

#tunnel
u/iverjo

Nice idea
u/katkip

That's genius

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pythech

remix of d/8774 by u/Feiro

function u(t) {

with(x)for(fillRect(0,0,k=2e3,k);k--;beginPath(fillStyle="#0001"))arc(960,540,k/4,v=k%4*2*S(t-k)*C(t-k*9)+t,v+.2),strokeStyle="red",stroke()

Jun 30 2018 10:49 AM UTC

}// 140/140

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u/magna

Stylish! #radar

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pythech

remix of d/8490 by u/pythech

function u(t) {

x.beginPath()
x.fillStyle=R()
c.width|=0
for(i=1e2;--i;) {
x.arc(C(i**(-i)-t)*400+900,C(i)*400+500,19,0,9)
}
x.fill()

Jun 7 2018 5:06 PM UTC

}// 117/140

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u/iverjo

#flag
u/S.T.L.K.R.

#oha

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pythech

remix of d/8630 by u/pythech

function u(t) {

c.width|=0
with(x)for(i=3;i--;stroke())beginPath(lineWidth=r=100*C(t+3.14)+200),arc(650+250*i,700-i%2*434,r/2,z=i*2.095,5.235+z)

Jun 17 2018 9:24 PM UTC

}// 128/140

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Imaginary Triangle

u/lionleaf

#illusion
u/iverjo

#opticalillusion
u/Purpzie

You can save 1 character by putting arc(650+250*i,700-i%2*434,r/2,z=i*2.095,5.235+z) in the for loop before stroke()
u/Purpzie

oh wait no you can't it's the same, never mind

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pythech

remix of d/8691 by u/pythech

function u(t) {

with(x)for(c.width|=k=160;k--;fill())i=k&31,j=k>>5,arc(21*i*(5+C(t))+200*i-120*C(t+j*3),200*j+20*C(i+t),190,!beginPath(fillStyle=R(j*65)),9)

Jun 22 2018 4:49 AM UTC

}// 140/140

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Red sea

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pythech

function u(t) {

for(i=0;i<20;++i)for(j=1;j<9;)x.beginPath(),x.fillStyle=`hsl(${j*t*4},65%,50%)`,x.arc(i*120,120*j++*S(t/4),Math.abs(C(t))*64,0,9),x.fill()

Jan 11 2018 1:38 AM UTC

}// 138/140

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u/hope4tg

Dope

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pythech

function u(t) {

x.beginPath()
x.fillStyle=R()
c.width|=0
for(i=1e2;--i;) {
x.arc(S(i%Math.PI+t)*400+900,C(i+t)*400+500,19,0,9)
}
x.fill()

Jun 7 2018 5:02 PM UTC

}// 121/140

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pythech

remix of d/8692 by u/pythech

function u(t) {

c.width|=0
t/=3
with(x)for(i=1e3;i--;fill(),fillStyle=k?'#fff':R())beginPath(k=i%2),arc(60*(i>>1)-t*222,500+400*S(i*k),200,0,9)

Jun 22 2018 4:11 AM UTC

}// 127/140

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The cave

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