Dweets by u/firegodjr

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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firegodjr

remix of d/8983 by u/firegodjr

function u(t) {

c.width|=0
with(x)for(i=1260;i--;stroke(),beginPath(lineWidth=10))arc(960,540,S(i/400+t)**14*S(i%4*t-t+i/20)*40+300,i/200,i/200+.02)

Jul 31 2018 1:20 PM UTC

}// 132/140

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Unravel

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firegodjr

function u(t) {

c.width|=0
with(x)for(i=630;i--;stroke(),beginPath(lineWidth=10))arc(960,540,S(i/200+t)**14*S(i%2*3+t+i/10)*40+300,i/100,i/100+.03)

Jul 30 2018 4:18 PM UTC

}// 131/140

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u/magna

DNA transcription
u/firegodjr

Inspired by https://beesandbombs.tumblr.com/image/175083… #beesandbombs

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firegodjr

remix of d/8945 by u/firegodjr

function u(t) {

F=n=>{return n%7}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#000":"#fff",x.fillRect(j*l,0,l,l)

Jul 28 2018 6:53 AM UTC

}// 112/140

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Digital City, feat. a distinct lack of primes. #texture

u/Joachim

#circuit

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firegodjr

remix of d/8942 by u/firegodjr

function u(t) {

F=n=>{for(i=2;i<n;)n=n%i++==0?0:n;return n>1}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#f00":"#000",x.fillRect(j*l,0,l,l)

Jul 27 2018 6:06 PM UTC

}// 140/140

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Further optimized the is_prime (F) function. How far can you scroll before timeout? :D #prime

u/fujimotos

It's kinda surprising that the distribution of prime numbers has such a noticeable pattern.
u/firegodjr

Well, primes are still technically pseudorandom. They don't form a noticeable pattern, per se. This algorithm would possibly work with any consistent pseudorandom number generator, but this pattern is uniquely made up of prime number interactions.
u/lionleaf

Well, non-prime numbers definitely have a pattern that I would expect helps making this very beatiful. For instance ever other number is not prime (even), every 5 number, every 7 number etc. So lot's of regularities.
u/fujimotos

Yeah. I see Math.random() > 0.5 produces a pettern looking nothing but garbled noise. In comparison, the one generated by prime numbers is a Persian carpet.

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firegodjr

remix of d/8941 by u/firegodjr

function u(t) {

if(!t)c.width=400,v=0
F=n=>{for(i=n;i-->2;)n=n%i==0?0:n;return n>1}
v++
for(j=400;j--;)F(j^v)?x.fillRect(j,v,1,1):0

Jul 26 2018 9:21 PM UTC

}// 115/140

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This is your brain on bitcoins. #prime

u/DataMeta

Good stuff. I see the death star trench
u/fujimotos

#scanline
u/fujimotos

#slow_render

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firegodjr

remix of d/8940 by u/firegodjr

function u(t) {

F=n=>{for(i=n;i-->2;)n=n%i==0?0:n;return n>1}
for(Y=100;Y--;)for(X=100;X--;)F(X&Y)?x.fillRect(460+X*10,Y*10,10,10):0

Jul 26 2018 8:54 PM UTC

}// 116/140

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Prime Shenanigans

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firegodjr

function u(t) {

F=n=>{for(i=n;i-->2;)n=n%i==0?0:n;return n>1}
x.font="5em x"
x.fillStyle=R(F(X=t|0)?255:0) 
x.fillText(X,X%9*90+550,X*10+90)

Jul 26 2018 7:35 PM UTC

}// 124/140

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Little prime generator :P

u/Xen

wow! very nice
u/firegodjr

Thanks! :D #prime

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firegodjr

function u(t) {

x.fillStyle=`hsl(${t*90},99%,50%`
x.fillRect(25*S(t)+935,25*C(t)+515,50,50)
x.drawImage(c,-9,-9,1938,1098)

Jul 22 2018 5:16 AM UTC

}// 106/140

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firegodjr

function u(t) {

p=Math.PI*2
with(x)for(i=0;i<p;stroke(),beginPath(strokeStyle=`hsl(${t*9},99%,50%`))
arc(960,540,S(i+t)*S(t+i*5)*150+300,i,i+=p/200)

Jul 13 2018 8:55 PM UTC

}// 132/140

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Strange Diamond

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firegodjr

function u(t) {

t||x.translate(960,540)
x.fillRect(-25,-25,500*C(t),50)
x.drawImage(c,-960,-540)
x.rotate(0.001*S(t)+.001)
x.fillStyle=`hsl(${t*9},99%,50%`

Jul 5 2018 4:27 PM UTC

}// 139/140

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