Dweets by u/geb

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: #ScaryMovies

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geb

remix of d/19254 by u/geb

function u(t) {

for(l=0,o=[0];l++-19;)o.push(l*(l+1)/2)
throw o+'\n https://oeis.org/A000217'

Jun 26 2020 5:53 PM UTC

}// 77/140

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In this sequence only 3 is prime

u/geb

I noticed this when i studied pascal's triangle
u/geb

#numbertheory #oeis

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geb

remix of d/19253 by u/geb

function u(t) {

for(l=0,o=[a=1,b=2];l++-19;)o.push(b+=a++)
throw o+'\n https://oeis.org/A089071'

Jun 26 2020 5:47 PM UTC

}// 80/140

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Number of liberties a big eye of size n gives in the game of Go.

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geb

remix of d/19251 by u/geb

function u(t) {

for(a=0,o=[a=1,b=2];a++-19;)o.push(b+=a)
throw o+'\n https://oeis.org/A000124'

Jun 26 2020 5:40 PM UTC

}// 78/140

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the Lazy Caterer's sequence

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geb

remix of d/19248 by u/geb

function u(t) {

c=(o,n)=>o[o.length-n]
for(a=0,o=[1,1,1];a++-19;)o.push(c(o,1)+c(o,2)+c(o,3))
throw o+'\n https://oeis.org/A000213'

Jun 26 2020 5:26 PM UTC

}// 116/140

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Tribonacci

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geb

remix of d/19242 by u/geb

function u(t) {

for(a=0,_=[r=1,p=1,g=1];a++-11;)_.push(p+=_[a-g])
throw _

Jun 26 2020 11:01 AM UTC

}// 57/140

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https://oeis.org/A000930 #Narayana #oeis

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geb

remix of d/10906 by u/BalintCsala

function u(t) {

for(m=599,c.width|=i=8;i--;x.transform(k=.6*C(a=t*1.4),s=-.6*S(a),s,-k,-1,m))x.rect(1,1,m,m);x.fill()

Jun 25 2020 9:17 PM UTC

}// 101/140

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u/katkip

awesome
u/geb

i wish i could see what is happening on the left
u/geb

i wish i could see what is happening on the left
u/geb

i wish i could delete comments i accidentally post twice

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geb

remix of d/10243 by u/cantelope

function u(t) {

for(a=0,_=[r=1,p=2];a++-9;)_.push(p+=_[a/r])
throw _

Jun 25 2020 8:35 PM UTC

}// 52/140

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https://oeis.org/A000079

u/13thptr

I was expecting 2,4,8,16,31...

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geb

remix of d/19225 by u/Irratix

function u(t) {

r=52
c=(n,k)=>k?n*c(n-1,k-1)/k:1
n=[];for(i=-1;i++<r;n[i].push("\n"))
for(n[i]=[],j=-1;j++-i;n[i][j]=c(i,j)%2?"/":"_");throw(n)

Jun 25 2020 8:23 AM UTC

}// 127/140

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big triangle #Sierpinski

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geb

function u(t) {

for(i=0,c.width=2e3,π=44/7,r=540;i++<180;a=5+i*S(t),x.ellipse(960,r,a<0?-a:a,r,6*π*i+S(t),~'moire patterns <3',7),x.stroke())x.beginPath()

Jun 15 2020 9:45 AM UTC

}// 138/140

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#moire

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geb

remix of d/5673 by u/DirtyDan

function u(t) {

p=12
a=950
b=500
c.width=a*2
for(i=1e4;i>a;i-=50)for(j=0;j<b;j+=9)
x.lineTo(a+b*S(i/a*p+C(t*2))*C(j/b*p),b+b*S(j/b*p)*S(i/a*p+t))
x.stroke()

Jun 13 2020 6:50 PM UTC

}// 140/140

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random remix

u/DaSpider

wow!

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