Hot dweets by u/Renaud___

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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Renaud___

function u(t) {

c.onmousemove=e=>a=e;c.width|=0;i=1e4;while(i--)x.fillRect(1e3+5e2*C(i)*C(t+a.pageX/1e2+i**3),550+5e2*S(i)*C(a.pageY/1e2+i**3),4,4);

Feb 16 2018 4:47 PM UTC

}// 132/140

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u/aleamb

great!

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Renaud___

remix of d/1035 by u/Renaud___

function u(t) {

y=355/339;b=0;t?0:f=h=i=g=210;while(b++<50){d=1-++f/2e5;for(e=4,z=2;z<3e3;z*=4)f%z==z/2?e=1:0;i+=e;x.fillRect(g+=d*C(y*i),h-=d*S(y*i),2,2)}

Jan 16 2018 12:51 AM UTC

}// 139/140

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u/Xen

love it!
u/dogspace

very nice koch fractal
u/katkip

#koch #fractal
u/rodrigo.siqueira

#snowflake

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Renaud___

function u(t) {

c.width+=i=0;z=30;for(;i<z*z;i++){s=t-i/9>2?2:t-i/9;s=s>0?s:0;r=(2-s)*z*z/2;v=s/2*z;a=9+r/2+(i%z)*v;b=9+r+~~(i/z)*v;x.fillRect(a,b,v-1,v-1)}

Oct 14 2017 6:16 PM UTC

}// 140/140

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u/cantelope

wat...
u/joeytwiddle

Cute :D
u/sb

I like it

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Renaud___

function u(t) {

z=32;y=t?y:{};for(i=0;i<z*z;i++){if(v=y[i]){v=t-v>1?z:(t-v)*z;w=(z-v)/2;x.fillRect(i%z*z+w,~~(i/z)*z+w,v,v);}if(Math.random()*z*z<1)y[i]=t}

Oct 14 2017 12:41 AM UTC

}// 139/140

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u/sb

Bar code spawning

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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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Show more comments…
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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Renaud___

function u(t) {

r=d=>9*C(d)-Math.floor(9*C(d));k=1e3;c.width^=0;for(i=0;i<k;i++)x.fillRect((k*r(i)+r(i+2)*t*99)%k,(k*r(i+1)+r(i+3)*t*99)%k,9,9);

Feb 26 2017 5:26 PM UTC

}// 128/140

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Renaud___

function u(t) {

r=Math.random;f=g=>Math.floor(256*r());x.fillStyle=R(f(),f(),f(),0.008);for(i=0;i<99;i++)x.fillRect(2220*r()-300,1380*r()-300,600,600);

Feb 24 2017 11:35 AM UTC

}// 135/140

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u/5Mixer

Woah, this is awesome. I've got no idea how it works but it's making a dope picture :D
u/Renaud___

Its only chain of random position square with very very low opacity and random color :]
u/sfz

I'm just... I'm... speechless.

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Renaud___

function u(t) {

c.width=2e3;a=h=f=i=g=600;y=Math.PI/3+t/1e3;while(f++<5*a){for(e=4,z=2;z<a;z*=4)f%z==z/2?e=1:0;i+=e;x.lineTo(g+=C(y*i),h-=S(y*i))}x.fill()

Feb 24 2017 1:20 AM UTC

}// 138/140

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u/Xen

nice

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Renaud___

function u(t) {

a=2500;h=f=i=g=210;y=Math.PI/3;while(f++<5*a){for(e=4,z=2;z<a;z*=4)f%z==z/2?e=1:0;i+=e;x.lineTo(g+=C(y*i),h-=S(y*i))}x.fill()

Feb 23 2017 5:41 PM UTC

}// 125/140

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