Dweets awesomed by u/fufuhaaa

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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sigveseb

remix of d/406 by u/sigveseb

function u(t) {

for(n=c.width=i=2e3;i--;x.lineTo(1e3+n*X/Z,560+n*U/Z))F=S(i),U=C(i),V=i%5-2,Z=V*C(t)-F*S(t)+12+9*S(t/2),X=V*S(t)+F*C(t);x.stroke() // :D

Feb 22 2017 9:36 PM UTC

}// 136/140

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recursive

remix of d/887 by u/New_Core

function u(t) {

t||((I=new Image()).src="https://is.gd/aYk0fZ")
x.fillRect(0,0,z=5e5,z)
for(i=960;i--;)x.drawImage(I,0,t*60-z/(250+i),w=640,1,w-i,i,w+i*2,1)

Feb 22 2017 6:42 PM UTC

}// 140/140

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Got a black backgrounhd

u/lionleaf

Awesome! Give it some time to start ;)
u/New_Core

nice =)

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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

Show more comments…
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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chisumu

function u(t) {

c.width=2000;for(j=-35;j<35;j++){k=Math.abs(j)+1;x.fillStyle=R(k*10,k*15,k*2);x.fillRect((3*j*j*C(t*j/2))+600,15*j+500,800,10*(k+1));}

Feb 22 2017 5:25 PM UTC

}// 134/140

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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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Show more comments…
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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New_Core

function u(t) {

if(!t)I=new Image(),I.src="https://is.gd/aYk0fZ";c.width=1e3;for(i=500;i--;)x.drawImage(I,0,-2e3*(250/(250+i))+t*60,640,1,320-i,i,320+i*2,1)

Feb 22 2017 5:02 PM UTC

}// 140/140

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wait a bit for it, its not that nice tho with white background ;)

u/recursive

I managed to include a black background in a remix https://www.dwitter.net/d/900
u/13thptr

#external
u/13thptr

#broken

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SubZtep

function u(t) {

q=Math.floor(t),t-q<.2&&(c=Math.floor(255*Math.random()),x.fillStyle=R(c,c,c,1),x.fillRect(25*q,440,1920,Math.floor(200*Math.random())+99));

Feb 22 2017 3:42 PM UTC

}// 140/140

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maysick

function u(t) {

c.width=1920;for(var i=1;i<100;i++){var b=(i*(1000+(t*35))/500);x.fillRect(-b/10+c.width/2+b*C(b),-b/10+c.height/2+b*S(b),b/5,b/5);}

Feb 22 2017 3:16 PM UTC

}// 132/140

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u/donbright

really nice pattern. i remixed into color hope you dont mind
u/iverjo

#spiral

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New_Core

function u(t) {

if(!t)b=a=0;9*t%3<1?a+=4:b+=5;x.fillStyle='hsl('+120*S(t)+',99%,50%)';x.fillRect(950+500*S(a*.01),540+400*S(b*.01),20,20);

Feb 22 2017 1:14 PM UTC

}// 122/140

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mxfh

remix of d/683 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)*S(φ)-S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 22 2017 1:12 PM UTC

}// 129/140

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