Dweets awesomed by u/ilSilvano

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: #ScaryMovies

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recursive

remix of d/1385 by u/tbroadley

function u(t) {

with(x)for(strokeStyle=R(c.width^=0),i=3;i++<11;stroke())beginPath(),arc(960,540,40*i,m=t+(0<(a=i*S(t)/4)||3)*a,2*t+4*a-m),lineWidth=i*i/5

Feb 26 2017 6:32 PM UTC

}// 138/140

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Golfed it down enough to add some color

u/tbroadley

Nice!

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lupigi

function u(t) {

c.width=1920;x.fillStyle=R(256,0,T(t)*64);x.textAlign="center";x.textBaseline="middle";x.font=500+T(t)*50+"px arial";x.fillText("♥",960,540)

Feb 24 2017 10:51 AM UTC

}// 140/140

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u/iverjo

#heart

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lupigi

function u(t) {

a=1920;b=1080;if(t%6<1)x.clearRect(0,0,a,b);else{h=Math.random()*a;v=Math.random()*b;x.fillStyle=R(h*.13,v*.237,t);x.fillRect(h,v,100,100)}

Feb 24 2017 9:41 AM UTC

}// 139/140

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sigveseb

remix of d/271 by u/3bl3gamer

function u(t) {

W=c.width=255;for(i=9<<12;a=i&W,b=i>>8,n=b-45,m=a-99,i--;x.fillRect(a,b,A=1/(((t+a/n)%2)^b/n),A))n*=(B=(W*S(t*29+n/5)+m*m+n*n)/5e3)<1?C(B):1

Feb 24 2017 12:35 AM UTC

}// 140/140

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Based on some of 3b3lgamer's stuff (remix link got broken).

Show more comments…
u/donbright

dude you are the king,.. O M GOSH
u/Renaud___

Fantastic :S
u/lionleaf

Fixed the remix link for ya :)
u/nashcat

holy sh*t
u/Kalanchoe

H...how? This is so impressive.
u/magna

Needs more music.
u/xem

inhuman
u/donbright

still the one that blew my mind the most.
u/lionleaf

#wobble #wobbly #water #mirror #checkerboard #refraction #sphere
u/Xaotic

wtf
u/firegodjr

#raytracing #best
u/stiaje

#witchcraft
u/sigveseb

This one used to be fast, wonder why it is slow now?

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fson

function u(t) {

x.strokeStyle = R(5*t, 0, 10*t, 0.01);
x.arc(t*100, (S(t+Math.PI)+1.5)*300, (S(2*t)+1)*100, 0, 2*Math.PI);
x.stroke();

Feb 23 2017 11:35 PM UTC

}// 119/140

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u/lionleaf

That looks amazing!
u/iverjo

Dope
u/Xen

Remix #2933
u/Xen

Remix #2933

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DOsinga

function u(t) {

c.width=1920;
for(i=0;i<100;i+=0.1)
x.fillRect(-200+i*50+S(t + i*0.9)*200, 400+C(t + i*1.1)*300, 20, 20) /* draw 50x200 rects */

Feb 23 2017 5:00 PM UTC

}// 128/140

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fredwulei

function u(t) {

c.width|=0;for(k=0;k<8;k++)for(i=0;i<15;i++)if('筯቉珧珏寉秏积牉篯篏'.charCodeAt((t+'').charCodeAt(k)-48)&1<<14-i)x.fillRect(k*36+i%3*9,(i/3|0)*9,8,8)

Feb 23 2017 3:54 AM UTC

}// 140/140

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u/donbright

can i guess how? did you pack the shapes for numerical digits into UTF8?
u/fredwulei

yes, digits are in 3 by 5, so I use unicode to represent the shape
u/aemkei

Nice! Did something like that here: https://gist.github.com/aemkei/1272408

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iverjo

remix of d/123 by u/icecuber

function u(t) {

i=frame;for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(k,j,i);x.fillRect(i,j,1,S(k/9))}

Feb 22 2017 6:10 PM UTC

}// 140/140

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Color version, a minified version of myJS's suggestion

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u/bakkot

golf'd slightly harder on general principles: i=frame;for(j=1080;j--;x.fillRect(i,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/donbright

niiiice
u/Krachwumm

This is freaking amazing. Even if it would have taken you 1000 characters
u/iverjo

Thanks bakkot! I golfed your version even further down to 134 characters: for(j=1080;j--;x.fillRect(i=frame,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/iverjo

Feel free to play with the colors! There's room for improvement
u/hamptonio

That's a work of art man
u/SpecialAgent

I must commend you! Did my research and got a working mandelbrot, but to golf it to 140 and get the speed is very very difficult! Wow. I will study your dweet now :)
u/iverjo

#fractal
u/iverjo

#mandelbrot
u/iverjo

#slow_render
u/f8f82804

#scanline

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jczimm

function u(t) {

c.width=1920;
for(i=0;i<300;i++)for(j=0;j<6;j++){x.fillRect(960+200*C(i)*S(T(t/1.1)+j/i),540+200*S(i),10,10)}

Feb 22 2017 5:23 PM UTC

}// 109/140

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u/sigveseb

Very stylish!
u/ninerdelta

nice!
u/Kalanchoe

truly a compact loading spinner!
u/jczimm

Thanks!
u/serko

Any way to view this fullscreen on an iPhone?
u/tischler

Awesome. Negating t makes it more aerodynamic. =)
u/Valscor

This is so cool!
u/over

This would be an amazing loading animation !
u/katkip

This is so easy to make and it has 297 likes
u/Leodude123

ねあt
u/Leodude123

Neat!
u/Scaledish

Could I use this as a animation for my site?
u/jczimm

Yes! Consider it CC0-licensed

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mxfh

remix of d/849 by u/mxfh

function u(t) {

r=480;c.width=r*4;λ=0;for(φ=a=Math.PI/2;φ>-a;φ-=1/r){λ+=a;x.lineTo(C(φ)*S(λ-t)*r+2*r,(C(t=t+1/r)*S(φ)+S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 22 2017 1:25 PM UTC

}// 135/140

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u/chrishaff

Old school cool!
u/ninerdelta

wow this is awesome
u/donbright

lovely
u/sfz

how in the
u/Drum

I've been clickcing 'awesome' on quite a few examples here, but this one is AWESOME!
u/Kalanchoe

Wow!
u/Brutal

Higher math :)
u/robvoodoo

If only you could fly the camera around!
u/Lazy1337

#d3

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