Dweets awesomed by u/rhys5584

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: #Food

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nyarmith

function u(t) {

for(i=0;i<15;i++){
x.fillStyle=R(255*S(t),255*C(t),155); //color
  x.fillRect(100+(i*100+S(t)*50), 400 + (i*i*15*S(t)) ,50,50) //draw
}

Dec 27 2017 12:29 AM UTC

}// 135/140

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If you added canvas clearing at the beginning of the frame, then the title would be "waggle"

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sadropol

remix of d/3748 by u/sadropol

function u(t) {

c.width|=0;for(i=1;i<140;i++){b=2*t+i;o=200-(S(b+5)*126)%256;x.fillStyle=R(0,o,0,1);x.fillRect(940+((i/60)%1)*S(b)*200,400+i*6%400,8,8);}

Dec 27 2017 12:01 AM UTC

}// 138/140

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Show more comments…
u/sigveseb

merry christmas!
u/joe724

Beautiful!
u/Chipnstein

just got plastuer and made a nice redish background to apply this on my desktop, awesome!
u/vrishankm13

new here, but this is already my all time favorite, so beautiful
u/lionleaf

Awesome! Merry Christmas :D Some good ones last year as well, if you manage to find them ^^
u/hollo47

#tree #christmas
u/vain

beautiful xmas tree

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joeytwiddle

remix of d/3631 by u/joeytwiddle

function u(t) {

w=1e3,r=Math.random;for(i=4e3;i--;x.fillRect(700+D,T+r()*(w-D*k/4-T),l=1/(4+t),l))s=r()<.6,k=s?-1:.4,D=(s?-350:650)*r(),T=9+D*k

Dec 14 2017 11:51 AM UTC

}// 127/140

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Merry Cubemas

u/cantelope

neat
u/magna

#cube
u/joeytwiddle

#stochastic #model #waitforit
u/joeytwiddle

Although unintended, the surfaces are not uniformly shaded. They get darker at the sides, because the same number of dots are compressed into a shorter height. This may give a false impression of radiosity.

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Xen

remix of d/3579 by u/veubeke

function u(t) {

for(c.width=i=512;i--;x.strokeStyle=R(Z=i*t%255,Z%i,Z+i),x.beginPath(x.stroke()))x.arc(i*32%544-16,i/28<<5|16,32,i-t*S(t-i),(i-t*S(t-i))+2)

Nov 28 2017 6:13 PM UTC

}// 139/140

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Xen

remix of d/205 by u/iverjo

function u(t) {

c.width=2e3;n=899;for(i=2;i<n;i+=2)s=2/(9.1-(t+i/29*C(t/4))%9),x.beginPath(),j=i*.69+t,x.lineWidth=s*s*4,x.arc(n,520,s*99,j,j+1),x.stroke()

Nov 14 2017 7:59 PM UTC

}// 139/140

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Give it 30 seconds ;-)

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dsic

function u(t) {

c.width|=0;x.strokeStyle=R(m=99+(o=40*(k=C(t))),o*k,m*k*k);for(i=j=5e2;--i;l=j*C(i+t),x.lineTo(960+l,540+l*S(i)**Math.log(j*i)));x.stroke();

Oct 29 2017 8:33 PM UTC

}// 140/140

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xem

remix of d/3326 by u/xem

function u(t) {

for(i=0;i<65;i++)for(j=0;j<65;j++)x.fillStyle=R(i*9,j*9,C(t)*255),x.fillRect(900+400*S((i+t/9)*3)*C((j+t/9)*1.5),500+400*S((j+t/9)*1.5),5,5)

Oct 21 2017 9:45 AM UTC

}// 140/140

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made by mistake while working on a rotating sphere :p

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artfarnaa

function u(t) {

for (c.width|=a=284;--a;x.arc(960+S(t+G*40)*260,
 540+C(t+G*40)*260,a%4*182*Math.abs(S(t/2)),
 0,8))x.moveTo(G=a/2|0,0)
 x.fill('evenodd')

Oct 13 2017 11:04 PM UTC

}// 140/140

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u/cantelope

mandala!
u/joeytwiddle

very pretty :)
u/artfarnaa

Any ideas how to add color to these Mandala animations?
u/cantelope

an attempt at a colorized version https://codegolf.tk/a/203
u/artfarnaa

Nice. Also tried moving the fill inside the loop but only called it once every 100 times are so, otherwise it locks up the browser.
u/donbright

love these

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lurifax

remix of d/3221 by u/lurifax

function u(t) {

c.width|=0;for(j=361;--j;x.fillRect(960+500*S(d=j/56)*C(e=t+j%4*.785),540+500*C(d)*S(e),9,9))x.fillStyle=`hsl(${j},99%,50%`

Oct 3 2017 8:16 PM UTC

}// 123/140

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Fixed the annoying black dot in the original and golfed 17b :)

u/Xen

you can get it to 115b ;-)
u/lurifax

Oh, interesting! Hmm, can you give a hint Xen? :)
u/lurifax

Got in down to 116b, thanks for the encouragement Xen: for(c.width|=j=360;--j;x.fillRect(960+500*S(d=j/54)*C(e=t+j%3),540+500*C(d)*S(e),9,9))x.fillStyle=hsl(${j},99%,50%
u/lurifax

Still can't find the last byte though :)
u/joeytwiddle

Could j start off with a higher value? ;)

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statenlogic

function u(t) {

for(c.width=d=300,e=2e3;e;a=C(e)*C(d+t),b=S(e),z=C(e)*S(d+t),q=6e3/(z+100),x.fillRect(a*q+150,b*q+85,r=z>-.1&&2+5*z**4*(a+b),r))d+=e-=.5

Aug 16 2017 8:21 PM UTC

}// 136/140

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u/sigveseb

Stellar!
u/sigveseb

The shading!
u/magna

WOW!
u/donbright

epic win
u/statenlogic

Thanks guys. It's my first dweet.
u/cantelope

this is one of the most amazing dweets i've ever seen. gr8 job!
u/nystrand

really nice first dweet!
u/n0va

I realy like this one, welldone!
u/iverjo

#sphere
u/joeytwiddle

#lighting #shading

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