Dweets by u/ersagun

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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ersagun

remix of d/18292 by u/ersagun

function u(t) {

if(!t)B=[-1,0,1,A=0],X=Y=700;z=frame;while(~z&1)z/=2;x.fillRect(X+=B[(A+=z&3)&3],Y-=B[~A&3],1,1)

Apr 16 2020 11:39 PM UTC

}// 96/140

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Dragon curve #fractal This is all I can golf.

u/ersagun

It may have an integer overflowing problem with the angle. I couldn't wait that long to confirm it.

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ersagun

function u(t) {

if(!t)X=Y=A=Z=0;for(i=2e3;--i;X+=S(A+=((z&2)-1)*Math.PI/2),Y+=C(A),x.fillRect(X+680,Y+740,1,1)){z=++Z;while(~z&1)z/=2}

Apr 16 2020 9:43 PM UTC

}// 118/140

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Dragon curve #fractal

u/ersagun

You could get rid of that for loop and make this into a slow loader instead but I think it's better this way. Also, my golfing skills are a mess.
u/Xen

nice start

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ersagun

remix of d/18086 by u/pavel

function u(t) {

with(x)fillStyle='#FFF',fillRect(0,0,2,1e3),fillStyle=R(),fillRect(0,540,2,10),drawImage(c,2,Math.random()*10-5)

Apr 2 2020 9:28 PM UTC

}// 112/140

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brown noise

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ersagun

function u(t) {

if(!t)X=Y=0
for(i=0;i<1e3;i++)X=(X*.8+Y*.3+S(A=(Math.random()*3|0)*2))/1.2,Y=(Y*.8-X*.8+C(A))/1.2,x.fillRect(1e3+Y*200,500+X*200,1,1)

Apr 1 2020 3:42 PM UTC

}// 133/140

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chaos game fractal

u/katkip

awesome!

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ersagun

function u(t) {

a=t*339525;r=62*t**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Dec 24 2018 3:33 AM UTC

}// 59/140

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Simpler is better right?

u/pavel

56 r=62*t**.5;x.fillRect(r*C(t*=339525)+960,r*S(t)+540,8,8)

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ersagun

remix of d/4868 by u/Pjaerr

function u(t) {

c.style.background=R();x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));a=t*339525;r=62*t**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Dec 24 2018 2:17 AM UTC

}// 129/140

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I think 339525*t instead of 2.3998*frames is much better. :)

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ersagun

function u(t) {

for(z=2000;z--;)with(x)translate(999,999),rotate(61),scale(.99999,.99999),translate(-999,-999),fillRect(0,0,5,5)

Nov 21 2018 8:06 PM UTC

}// 112/140

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u/katkip

Looks like a fractal

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ersagun

function u(t) {

eval(unescape(escape`挮睩摴桼㴰㭔㵴⼳☷㭦潲⡺㵍慴栮偉⨲㭺㸰㬩椽匨吪稩⭓⡔⩺⭺⬳⸱㐩⨲ⱪ㵃⡔⩺⤫䌨吪稫稩⨲Ⱬ㴭匨㈪吪稫稩ⱬ㵩⩃⡴⤫欪匨琩Ɑ㵩⩓⡴⤭欪䌨琩⬱〬稭㴱⼱〰ⱸ⹦楬汒散琨氪⡤㴵㐰⤯洫搬横搯洫搬㤬㤩`.replace(/u(..)/g,"$1%")))

Oct 22 2018 4:09 AM UTC

}// 138/140

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Knots

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ersagun

remix of d/10580 by u/ersagun

function u(t) {

if(!t)s=k=i=j=b=500
s+=S(k+=Math.random()-.5)/4
x.fillStyle=`hsl(${t*50},90%,60%)`
x.fillRect(S(j+=S(s)/50)*b+b+b,S(i+=C(s)/50)*b+b,9,9)

Oct 22 2018 2:25 AM UTC

}// 136/140

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ersagun

function u(t) {

t*=60;i=j=0;for(s=8;u=1&(t/2),v=1&(t^u),(s*=2)<513;t/=4){if(!v){if(u==1)i=s-16-i,j=s-16-j;z=i;i=j;j=z}i+=s*u,j+=s*v}x.lineTo(i,j),x.stroke()

Oct 21 2018 10:36 PM UTC

}// 140/140

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Hilbert curve

u/aleamb

love it!
u/aleamb

#hilbert #fractal
u/pavel

Shaved off 16 chars: for(t*=60,i=j=0,s=8;u=t&2?1:0,s*=2,s<513;t/=4,i+=s*u)1&t^u?j+=s:(u&&(i=s-16-i,j=s-16-j),i+=j-(j=i));x.lineTo(i,j);x.stroke()

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