Dweets by u/pavel

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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pavel

remix of d/10477 by u/pavel

function u(t) {

s=3+15*t%6;i=960-s*365;j=s*210;for(c.width|=a=n=0;n<1e4;T=n=>n&&T(n>>1)-n&1)T(n++)?x.lineTo(i-=s*C(A=a++*355/339),j+=s*S(A)):a-=3;x.stroke()

Nov 6 2018 4:56 AM UTC

}// 140/140

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#koch #fractal

u/13thptr

#zoom #loop

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pavel

remix of d/10575 by u/pavel

function u(t) {

for(z=42;j=z-->>1;x.fillRect(960+S(k)*15-w/2,540+C(k)*15+w/2-r,w,2*r-w))k=7*t-j/2,x.fillStyle=`hsl(${9*k},33%,${7*j}%`,r=50*j,w=C(t/9)*z%2*r

Nov 6 2018 4:40 AM UTC

}// 140/140

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pavel

remix of d/10801 by u/f8f82804

function u(t) {

c.width=480
for(k=5;k--;)for(n=7;n--;x.lineTo(240+99*r*S(p=(n<4?n:n-4)/1.6+1.26*k-t),50*r*C(p)+70*(n<4?n:6-n)))r=n%3>0
x.stroke()

Oct 31 2018 8:52 PM UTC

}// 129/140

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u/f8f82804

amazing! #wireframe #d3 #perspective #decahedron #d10
u/f8f82804

oops, looks like this doesn't use any perspective transfrom
u/iverjo

Nice!
u/f8f82804

#pentagonal #trapezohedron

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pavel

function u(t) {

for(c.width|=i=100;i--;)
for(j=50;j--;)
s=20*S((i|j)-t/2)**20,  // Then a miracle occurs
x.fillRect(10+20*i-s/2,10+20*j-s/2,s,s)

Oct 31 2018 3:37 AM UTC

}// 128/140

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#sierpinski

u/joeytwiddle

Transient overlapping Sierpinskis. Lovely.

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pavel

remix of d/10775 by u/jylikangas

function u(t) {

for(c.width=i=300;i--;x[f](i,99-C(i/31+t)*9,.5,S(i/89+t)*9))x[f='fillRect'](X=99-S(t-=(T=4-i%9)/59)*(90+T*5),X/9+C(t*4)*T*T/5,s=7+!T*4,s-5)

Oct 30 2018 5:17 PM UTC

}// 139/140

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pavel

remix of d/10766 by u/anotherkitten

function u(t) {

for(o=t%4,c.width|=s=i=60;i--;)for(j=22;j--;)i+j&1&&x.fillRect(s*(i+(i%2*2-1)*[o,1,o-1,2][o|0]-2),s*(j-(j%2*2-1)*[0,o-1,1,o-2][o|0]-2),s,s)

Oct 30 2018 2:18 AM UTC

}// 139/140

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u/anotherkitten

now this is fantastic, good work

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pavel

remix of d/10753 by u/alice-mx

function u(t) {

for(a=Math.abs,c.width|=j=440;j--;x.fillRect(((j>>1)%20+s*P)*99,((j/40|0)+s*Q)*99,50,50))s=(j%2-.5)/2/Math.max(a(P=C(t)),a(Q=S(t)))

Oct 29 2018 6:56 PM UTC

}// 131/140

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u/anotherkitten

dang your version is a lot better than mine, nice
u/katkip

wait what... i dont understand xD. nice

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pavel

function u(t) {

g=_=>2*Math.random()-1;Y=g(X=g(r=512));h=X*X+Y*Y<=1
x.fillStyle=R(a=99+!h*99,a,a);x.fillRect(r+r*X,r+r*Y,32,32)
t?0:n=d=0;throw 4*(n+=h)/++d

Oct 27 2018 3:13 AM UTC

}// 140/140

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Estimating Pi using the Monte Carlo Method

u/katkip

Genius!
u/pavel

#pi

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pavel

remix of d/10653 by u/anotherkitten

function u(t) {

with(x)for(c.width=-1,translate(150,i=84);--i;rotate(t),t=2.1,fill(new Path2D('M67 28 9-72-9-72 37 11-19 11-28 25')))fillStyle=R(a=50*i,a,a)

Oct 24 2018 8:24 PM UTC

}// 140/140

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Show more comments…
u/yonatan

hah! - works as a separator
u/anotherkitten

dang, well done. wasn't sure if it was doable.
u/lionleaf

Nicely done!
u/aleamb

cool!
u/magna

damn.
u/joeytwiddle

Very good
u/katkip

Awesome!
u/katkip

#path2d
u/pavel

#uncompressed in black and white

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pavel

remix of d/8622 by u/leSchieber

function u(t) {

f=frame;(d=(a,b,n,r,m=n/2)=>{a-=m;b-=m;--r&&d(a,b,m,r)&d(a+n,b,m,r)&d(a,b+n,m,r)&d(a+n,b+n,m,r);--f||x.fillRect(a,b,n,n)})(960,540,500,7)

Oct 24 2018 9:08 AM UTC

}// 137/140

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u/katkip

#fractal
u/BirdsTweetCodersDweet

Awesome! Looks like a #hilbert_curve
u/katkip

Yeah but it is actually something like #sierpinski carpet
u/katkip

nvm, it's Vicsek's fractal

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