Dweets awesomed by u/im889

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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im889

function u(t) {

x.beginPath();x.setTransform(h=960,0,0,h,h,h);for(q=99;h>0;h-=30){x.lineTo(S(h%21+t),S(h%33+t));x.fillStyle=R(c=S(t)*q+q,0,c*2,.1)}x.fill();

Dec 28 2017 6:12 AM UTC

}// 140/140

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u/Xen

smooth

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im889

function u(t) {

n=3+t<<1;x.beginPath();for(a=h=960;h;h-=5){x.lineTo(a+a*S(h%n+t),a+a*S(h%++n+t));x.fillStyle=`hsla(${t*99},99%,50%,.02`}x.fill("evenodd")

Dec 28 2017 6:10 AM UTC

}// 138/140

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retera

remix of d/4299 by u/retera

function u(t) {

c.width=1920;for(k=0;k<t;k+=0.01){d=Math.abs(k%2-1);for(r=0;r<6.282;r+=0.19){l=(480+t*30);x.fillRect(960+C(r+k)*l*d,540+S(r+k)*l*d*d,8,8)}}

Dec 28 2017 6:07 AM UTC

}// 139/140

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tinfoilboy

function u(t) {

for(i=0;i<100;i++){x.fillStyle=R(255^(i*5+C(t)),95^(i*6*S(t)));x.fillRect(i*50,(1080/2)*T(t*(i+1)*.05)*S(t/(i+1))*C(t*t*.25)+(1080/2),8,8);}

Dec 28 2017 5:59 AM UTC

}// 140/140

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im889

function u(t) {

x.transform(q=h=540,0,0,h,(c.width^=0)/2,h);for(;h-=18;){x.lineTo(v=S(h%13+t),C(h%11+t));x.fillStyle=R(0,0,S(v+t)*q,.05);x.fill("evenodd");}

Dec 28 2017 4:43 AM UTC

}// 140/140

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u/Xen

nice

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im889

function u(t) {

x.transform(10,0,0,10,(c.width^=0)/2,540);for(i=75;i--;){;x.fillText(i%4==0?'😀':'🌎',S(t*2+i/6)*50*2,C(t*2+i/4)*50)}

Dec 28 2017 3:51 AM UTC

}// 115/140

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scanlime

function u(t) {

for(i=n=32;i--;){x.fillStyle=i&1?'#cfd2':'#0042';x.setTransform(n*S(t),n*C(t),n*C(t*.4),n*S(t*.9),960,540);x.fillText(t%9|0,i%17-12,i/8-4)}

Dec 28 2017 2:24 AM UTC

}// 139/140

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snail

function u(t) {

x.transform(540,0,0,540,(c.width=1920)/2,540);
for(i=-t,n=20;n--;i+=t/8)
x.lineTo(C(i), S(i));
x.fill("evenodd");

Dec 26 2017 10:19 PM UTC

}// 113/140

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u/sigveseb

starts of basic then gets pretty cool
u/lionleaf

It gets cooler and cooler the longer you wait!
u/vain

i love it

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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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andy

function u(t) {

a=b=>S(t*b)*128+128
x.fillStyle=R(a(1.3),a(3),a(2))
x.fillRect(S(t*3)*960+960,C(t*2.5)*539+539,10,10)
x.drawImage(c,S(t)-2,C(t)-2,1924,1084)

Feb 23 2017 10:30 AM UTC

}// 140/140

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Show more comments…
u/magicmarc

First line as "a=b=>128*(S(t*b)+1)" brings this to 140.
u/andy

Thanks, that's right. Didn't even realize i was over 140 :)
u/lionleaf

Are you seeing over 140 characters? On chrome it says 140/140 at least.
u/andy

weird, yesterday it said 143.
u/michelinux

It's probably because on Windows the new line takes 2 characters ('\n\r'). Use ';' instead of new line and you should have a more consistent behaviour.
u/andy

still weird, i don't have any windows machines.
u/SpecialAgent

the simplicity of that zoom blows my mind, great work!

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