Dweets awesomed by u/systemwizard

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

show FPS hide FPS share 2 remixes fullscreen

SpecialAgent

function u(t) {

c.width^=0;r=400;A=[.4,.7,1,1.5,1,2,4,7];for(n=4;n--,q=r*A[n],d=t/A[n+4];)x.arc(r*2,r,q,1,9),x.stroke(),x.fillRect(r*2+q*C(d),r+q*S(d),9,9)

Mar 2 2017 10:55 AM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Illustrates the orbits of the first 4 planets in our solar system. The distance from the sun (not shown but expected in the center) and the orbital periods are to approximate scale. Variable A holds the planetary data, positions 0-3 indicate the distance in Astronomical Units from the sun, positions 4-7 the number of days for orbital periods. These are rounded to fit into the 140 byte limit. Earth should be 3.65, but is rounded up to 4. Not perfect but a close approximation. q is the radius of each orbit (derived from the AU distance), and d is the angle of the planet on the orbital path (derived from the days per orbital period).

u/donbright

hell yeah
u/donbright

remix to show e-v orbital resonance https://www.dwitter.net/d/1811
u/donbright

i wish i could vote twice on SpecialAgent's dweet, so cool.
u/SpecialAgent

Thank you donbright :)
u/SpecialAgent

A golfed version that tunes earth's orbital period to 360 days, and speeds up the simulation: c.width^=0;r=600;for(n=4;n--,q=r*[.2,.3,.5,.75][n],d=t*2/[1,2,3.6,7][n];)x.arc(r,r,q,1,9),x.stroke(),x.fillRect(r+q*C(d),r+q*S(d),9,9)

show FPS hide FPS share 2 remixes fullscreen

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

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

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

show FPS hide FPS share 4 remixes fullscreen

p01

function u(t) {

for(d=2e3;d--;x.fillRect(960+d*C(a),540+d*S(a),24,24))a=Math.random()*6.3,x.fillStyle=R(e=255*C(t-1e3/d*S(t-a-C(a*99/d))),99*S(a-e/d),6e4/d)

Feb 22 2017 11:45 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/sigveseb

Nice!
u/ninerdelta

wow!
u/p01

Thanks :)
u/ArtsyBiker1

Awesome!
u/TheGreatRambler

Messing with my brain!
u/lionleaf

#tunnel

show FPS hide FPS share 17 remixes fullscreen

jczimm

function u(t) {

c.width=1920;
for(i=0;i<300;i++)for(j=0;j<6;j++){x.fillRect(960+200*C(i)*S(T(t/1.1)+j/i),540+200*S(i),10,10)}

Feb 22 2017 5:23 PM UTC

}// 109/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Show more comments…
u/sigveseb

Very stylish!
u/ninerdelta

nice!
u/Kalanchoe

truly a compact loading spinner!
u/jczimm

Thanks!
u/serko

Any way to view this fullscreen on an iPhone?
u/tischler

Awesome. Negating t makes it more aerodynamic. =)
u/Valscor

This is so cool!
u/over

This would be an amazing loading animation !
u/katkip

This is so easy to make and it has 297 likes
u/Leodude123

ねあt
u/Leodude123

Neat!
u/Scaledish

Could I use this as a animation for my site?
u/jczimm

Yes! Consider it CC0-licensed

show FPS hide FPS share 7 remixes fullscreen

mxfh

remix of d/849 by u/mxfh

function u(t) {

r=480;c.width=r*4;λ=0;for(φ=a=Math.PI/2;φ>-a;φ-=1/r){λ+=a;x.lineTo(C(φ)*S(λ-t)*r+2*r,(C(t=t+1/r)*S(φ)+S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 22 2017 1:25 PM UTC

}// 135/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Show more comments…
u/chrishaff

Old school cool!
u/ninerdelta

wow this is awesome
u/donbright

lovely
u/sfz

how in the
u/Drum

I've been clickcing 'awesome' on quite a few examples here, but this one is AWESOME!
u/Kalanchoe

Wow!
u/Brutal

Higher math :)
u/robvoodoo

If only you could fly the camera around!
u/Lazy1337

#d3

show FPS hide FPS share 1 remix fullscreen

iverjo

remix of d/598 by u/iverjo

function u(t) {

c.width=1920;for(i=-2;i<2;i+=.05)for(j=-4;j<4;j+=.05)X=j-3*S(t),Y=i+C(t),1/(j*j+Y*Y)+1/(X*X+i*i)>1&&x.fillRect(j*240+960,i*240+540,12,12)

Jan 14 2017 3:56 PM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/nickd3000

A weird remix https://www.dwitter.net/d/6361
u/iverjo

#metaballs

show FPS hide FPS share fullscreen

lionleaf

remix of d/592 by u/New_Core

function u(t) {

c.width=2e3;a=99*S(t)+300;;for(b=i=500;i--;)x.strokeStyle='red',X=1e3+a*S(i)*S(i*0.5+.3*T(t))-b*C(t*.5),Y=b+a*C(i),x.lineTo(X,Y);x.stroke();

Jan 13 2017 8:33 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Hot air baloon caught in a tornado!

u/lionleaf

#balloon

show FPS hide FPS share 1 remix fullscreen

iverjo

remix of d/580 by u/iverjo

function u(t) {

t>7?(x.fillStyle='#fff',x.fillRect(209+(t|0)*99,220,15,15)):(X=S(S(t*4)*1.5)*.6,x.lineTo(960+512*X*X*X,480-32*(13*C(t)-4*C(2*t))),x.fill())

Jan 3 2017 10:53 AM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Wait for it

u/iverjo

Alien?
u/joeytwiddle

a Japanese lady

show FPS hide FPS share 2 remixes fullscreen

New_Core

remix of d/508 by u/New_Core

function u(t) {

x.beginPath();b=99;for(i=6;i--;)x.fillStyle=R(a=b*C(t)+b,t*i,a*i),x.fillRect(960+b*S(t+i),540+b*C(t+i),9,9);x.drawImage(c,-5,-3,1930,1086)

Dec 15 2016 3:06 PM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

lol didnt need that beginpath there, was leftover from the other one

u/New_Core

a=255;for(i=6;i--;)x.fillStyle=R(33*t%a,66*t%a,99*t%a),x.fillRect(960+a*S(t+i),540-a*C(t+i),9,9);x.drawImage(c,-5,-3,1930,1086)
u/iverjo

Very nice, and trippy af. This is the kind of thing I meant when I said I wanted to do a remix of https://www.dwitter.net/d/508
u/New_Core

#swirl

show FPS hide FPS share 2 remixes fullscreen

New_Core

function u(t) {

x.beginPath();x.strokeStyle=R(0,a=255*(t%1),a);x.ellipse(960,540,b=99+9*S(a=t*9),b*.9,t,0,7),x.stroke();x.drawImage(c,-5,-3,1920+10,1080+6)

Dec 11 2016 10:20 AM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/iverjo

Spectacular! I want to make a remix of this
u/lionleaf

Amazing!
u/13thptr

#tunnel

dwitter.net | systemwizard (3367)