Dweets awesomed by u/anilalur

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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anilalur

remix of d/5243 by u/anilalur

function u(t) {

c.width=1920; /* clear the canvas */
for(i=0;i<1000;i++)
x.lineTo(i,600+i*S(2*3.141*50*i+t));
x.stroke();

Jan 2 2018 11:32 AM UTC

}// 105/140

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anilalur

function u(t) {

c.width=1920; /* clear the canvas */
for(i=0;i<1000;i++)
x.lineTo(i,600+100*S(2*3.141*50*i+t));
x.stroke();

Jan 2 2018 11:32 AM UTC

}// 107/140

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Exca

function u(t) {

//Pen!
r=v=>x.fillStyle=R(v,v,v,1)
x.fillRect(r(255)|0,340,1920,49)
x.fillRect(r(0)|960+C(t)*250*S(t/3),340,6,49)
x.drawImage(c,S(t)/4,1.2)

Dec 29 2017 4:59 PM UTC

}// 139/140

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ben

remix of d/4509 by u/ben

function u(t) {

v=(a,b,g,r)=>{for(i=0;i++<r;)x.fillRect(a+=S(g),b-=C(g),r/9,2)
r>1?v(a,b,g+=o,r*=.7)&v(a,b,g+=5,r):0}
o=S(t)/9+1
c.width=500
v(250,280,0,80)

Dec 29 2017 1:23 PM UTC

}// 140/140

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blowing in the fractal wind

Show more comments…
u/sigveseb

Sweet!
u/Xen

very nice!
u/Bendoman

Fabulous.
u/lionleaf

Amazing!
u/lynnlangit

love, love, love it!
u/nystrand

elegant!
u/iverjo

#recursive
u/lionleaf

#fractals
u/lionleaf

#fractal . hmm, maybe not plural
u/vain

so beautiful - amazing work!

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ben

function u(t) {

function v(a,b,g,r){if(r>1){x.fillRect(a+=r*S(g),b-=r*C(g),2,2)
v(a,b,g-1+C(t),r*=.7)
v(a,b,g+.5+S(t),r)}}c.width=500
v(250,270,0,80)

Dec 28 2017 9:28 PM UTC

}// 133/140

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u/Xen

LOVE IT!
u/ben

trying to make a swaying tree but requires too many characters to draw the branches
u/Xen

join the chat and show your code... :-)
u/sigveseb

Very good!
u/itsjustmustafa

recursive functions in under 140, love it!
u/Bendoman

Best thing on here by far.
u/FrankMoren27

awesome
u/iverjo

#recursive
u/lionleaf

#fractals
u/vain

incredible

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ellisk1

function u(t) {

c.width|=0;a=50;x.fillRect(950,1e3*T(t+10),a,a);for(i=0;i<a;i++)x.fillRect(i*a,1100,a,-200+.1*S(t)*(i*(39-i)*S(a*Math.abs(i-19)+10*t)))

Dec 28 2017 4:25 PM UTC

}// 135/140

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u/Xen

cool idea
u/joeytwiddle

#water #drop #waves

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nystrand

function u(t) {

for(i=w=3e3,a=b=g=333*T(t%9/7);j=(i^a*a)%4,i--;x.fillRect(a+=g+C(j*5+t)*g-a/2-w+g,b+=g+S(j*9+t)*g-b/2-w,s,s),w=2)x.fillStyle=R(s=w*9,w,s,.1)

Dec 28 2017 2:50 PM UTC

}// 140/140

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Show more comments…
u/sigveseb

This one is fantastic! Good job indeed
u/Bendoman

Brilliant!
u/Xen

very very impressive!
u/magna

HOW ON EARTH
u/nic

MIND:=BLOWN
u/lowpoly

Gawd, I learnt a lot today
u/Citiral

Since when does Javascript support black magic?
u/sigveseb

Needs more upvotes!
u/doof

this was such a delight to unpack :)
u/Lazy1337

wow
u/aleamb

amazing
u/iverjo

I'm awestruck
u/xem

unbelievable
u/trapkid

lol
u/aleamb

epic! one of the greatest dwitter
u/ThreeNPlusOne

sierpinski triangle :D
u/xem

It'd be nice to have a blog post explaining it :) (please?)
u/trupples

I didn't look much into it but it might have to do with a thing I read about once where if you have a point that "walks" half the distance towards a random corner of a triangle you'll end up drawing a sierpinski triangle sorta like you can see in https://www.dwitter.net/d/5097
u/trupples

And according to http://distrustsimplicity.net/articles/sierp… if you were to use 4 points instead of 3 you'd get a tetrahedron like in this dweet. Fascinating stuff
u/stiaje

#witchcraft
u/lionleaf

#top_of_the_year
u/Scaledish

wow
u/Tekmap

👏👏👏👏👏
u/vain

that's not from this world! incredible code / 3d fx and blur
u/rodrigo.siqueira

3D flying #sierpinski pyramid #fractal

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Exca

function u(t) {

t/=4;for(i=0;i<1100;i++){d=C(t+i),s=i==0?2920:9-d*8;x.fillStyle=R(i,i,i,0.1);x.fillRect(S(t*2.5+i)*220*S(C(t)+i%50)+960*(i==0?-1:1),i,s,s);}

Dec 27 2017 7:58 PM UTC

}// 140/140

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u/magna

Wow!
u/Xen

impressive first 2 dweets
u/sigveseb

Very nice
u/mrremix

i really like this one... might do a remix later :]
u/CliffJonesJr

I remixed this into a tornado: https://www.dwitter.net/d/4590
u/lionleaf

#twister
u/Cloud

Milk path
u/vain

cool looking twister / tube

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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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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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Renaud___

function u(t) {

l=c.width+=i=0;h=400;for(;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(l*C(i*i)+~~a*(w=a*h-h)*C(j),(~~a?h:a*h)*(C(i)*C(i)+2)+w*S(j)/4,3,3)

Feb 27 2017 12:09 PM UTC

}// 140/140

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u/HeyJD

This looks amazing. Great job.
u/Renaud___

Thanks :)
u/khalkeus

this is super neat
u/iverjo

Wow!
u/lionleaf

Brilliant!
u/tbroadley

Sweet!
u/donbright

OMG OMG OMG OMG
u/ninerdelta

mind blown
u/sfz

(((does we're not worth bow)))
u/Kalanchoe

That's so beautiful!
u/spbyrne

Incredible
u/Renaud___

wow ... thanks again for all the nice reviews :)
u/punkhaa

mice
u/punkhaa

*nice
u/gormisdomai

I joined this site for this kind of thing
u/lionleaf

On mobile you can tap at different locations for different colors
u/lionleaf

Haha, oops, that comment was for another dweet. This still remains one of my favorites!!
u/sigveseb

golfed to 137: for(l=c.width+=i=0,h=400;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(l*C(i*i)+~~a*(w=a*h-h)*C(j),(~~a?h:a*h)*(C(i)**2+2)+w*S(j)/4,3,3)
u/FireFly

Eternal rains will come… I really like this one, very pretty!
u/zhanglongdream

啊啊啊
u/leonarven

It was really nice to solve the secret of this code! Such simple, but such brilliant! Good job!
u/sb

My favorite
u/arowberry

I love it. Reminds me of my Seattle days.
u/21medals

What does ~~ do? Like in (~~a?h:a*h)
u/Renaud___

It work as a math.floor. actually there is a difference but i dont remember how exactly
u/Renaud___

Dunno what changed in Chrome recently, but now this animation is very very slow :(
u/hollo47

#rain
u/noonat

~ is a bitwise not. It flips all the bits in the number to the opposite. Flipping again (~~) puts the bits back to what they were. It works does something similar to floor because it truncates floats to 32-bit integers as part of the operation. (But unlike floor, ~~-2.1 is -2 instead of -3.)
u/rbong

I did a detailed analysis of this effect in a medium post: https://medium.com/@r.l.bongers/visual-effec…
u/vain

cool raindrop fx

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