Dweets awesomed by u/robot0001

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

} // 112/140

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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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Nick

function u(t) {

a=128;b=10*S(7*t/5);
for(i=0;i<50;i++)
c=a+a*S(i/10),
x.fillStyle=R(c,a+a*S(3*t),255-c,i),
x.fillRect(960+b*S(t)*i,540+b*C(t)*i,15,15)

Mar 2, 2017 6:01 AM

}// 134/140

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u/donbright

reat color

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jcyl

function u(t) {

c.height=1080;
for(i=0;i<30;i++){
x.fillRect((S(t*i)*60)+960,(20*i)+200, 4, 4)
x.drawImage(c,t,t,1920,1080)
}

Mar 2, 2017 12:17 AM

}// 109/140

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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

}// 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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micksam7

remix of d/1474 by u/micksam7

function u(t) {

f=2e3;x.fillStyle=R(f,f,f,.2);x.fillRect(0,0,f,f);for(i=f;i--;)a=T(i+t/9)*C(i),x.fillStyle=R(i,i/5),x.fillRect(a*900+960,C(i*t/f)*1080,9,9)

Feb 27, 2017 6:59 AM

}// 139/140

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HeyJD

function u(t) {

c.width^=0;r=480;for(θ=44/7;θ>0;θ-=.7/(C(t)+1))for(φ=p=11/7;φ>-p;φ-=1/r)x.lineTo((C(t)*S(φ)-S(t)*C(φ)*S(θ))*r+r*2,C(φ)*C(θ)*r+r);x.stroke()

Feb 26, 2017 5:46 PM

}// 140/140

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You can change the ".7" number to be a lower number like .2 to increase the number of segments in the sphere.

u/donbright

brilliant

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robot0001

remix of d/155 by u/lionleaf

function u(t) {

c.width=2e3;m=T(t*3)*95;x.translate(960,540);for(i=1;i<9999;i++){a=(i%9);x.rotate(1);x.fillRect(a?(i/99|0)*50:0,m,a?2:9,99)}

Feb 26, 2017 5:13 PM

}// 124/140

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u/SpecialAgent

so we meet again, mr bond...

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robot0001

remix of d/1267 by u/sigveseb

function u(t) {

c.width^=0;for(i=5e3;p=3*t+T(t/2)*i/2e3+i%4*2,i-=5;x.fillStyle='red')d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*C(t+i/9e4),i/4,99*d,9)

Feb 26, 2017 4:47 PM

}// 136/140

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robot0001

remix of d/135 by u/icecuber

function u(t) {

c.width=192;A=Math.abs;Y=A(t*99%176-81);X=A(t*139%376-188);x.F=x.fillRect;x.F(X,Y,3,2);x.F(187,Y+C(X/39)*9,9,30);x.F(2,Y-S(X/9)*22,5,9)

Feb 26, 2017 3:32 PM

}// 135/140

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robot0001

remix of d/1393 by u/Jenky

function u(t) {

n=120;r=5;for(i=t;i<t+r+r;i+=r/99){z=i*i+t;a=-C(i);b=-T(i);x.fillStyle=R(C(z)*n*255,C(r),C(z)*n);x.fillRect(960-T(t+i)*a*n,b*n*4,9,i)}

Feb 26, 2017 3:15 PM

}// 135/140

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robot0001

remix of d/1396 by u/kchplr

function u(t) {

for(c.width^=0,i=9e3;i--;r=i/30,e=S(t*.1)*.1,w=1e3,z=100+C(i*2+r*e)*999,y=S(C(i+t)),Y=y,x.fillRect(w+w*y,r*r*t*.7+500+z*y*.9,T(Y)*10,99));

Feb 26, 2017 3:00 PM

}// 138/140

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