Dweets awesomed by u/denzen

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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Current theme challenge: #Opposites

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cantelope

function u(t) {

for(w=(i=c.width|=0)/2;i--;x.fillRect(w+S(p)*b/Z*w,540+S(g*2)*4e5/Z,s=7e7/Z/Z,s))Z=1800+C(p=(b=i-w)/(150+S(t)*99)*(b<0?-1:1)*C(g=b/w+t)+t)*b

Nov 27 2017 7:37 AM UTC

}// 140/140

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u/donbright

man this is so polished and nice

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cantelope

function u(t) {

r=q=>x[q?"lineTo":"moveTo"](w+(X-21)/Z*w,1.5/Z*w);for(w=500,i=c.width=1e3;i--;r(Z++),r(X--))X=(i+t)%40,Z=1+(i/40|0)-t*5%1,r();x.stroke()

Nov 6 2017 7:27 AM UTC

}// 136/140

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u/mmastrac

so cool
u/joeytwiddle

retro and futuristic at the same time
u/jdspugh

Very cool

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cantelope

function u(t) {

for(x.fillRect(0,0,i=(w=960)*4,i);i--;x.clearRect(w+(S(q=i/611.2+t/4)*Z)/(Z=C(q)*Z-8)*w,(S(p)-3)/Z*w-99,s=32/Z,s))Z=C(p=i/4.7746)+4

Oct 20 2017 4:09 AM UTC

}// 131/140

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Show more comments…
u/artfarnaa

awesome
u/joeytwiddle

Very nice! This makes the dots swirl: p=i*t/40
u/donbright

elegant
u/magna

Awesome!
u/ronrogers

Awesome!VISIT https://www.essayguardian.com/
u/artfarnaa

Outstanding. Your motivating me to up my game. How much of your work is trial and error about what looks cool vs actual engineering?
u/cantelope

artfarnaa, thanks. it's mostly just educated guesses. Most of my dweets start as a pretty concrete idea, then I draw from experience and do my best to fit the idea into 140b. Sometimes I'm successful, and sometimes not. :)

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cantelope

remix of d/2845 by u/cantelope

function u(t) {

A=960,B=540,x.fillRect(0,0,D=2e3,D)
for(i=D;i--;)x.clearRect(A+1/(Z=2.5+C(p=i*C(t/2)/40)*S(q=i/628))*(X=S(p)*S(q))*A,B+C(q)/Z*A,s=69/Z/Z,s)

Jul 10 2017 4:43 AM UTC

}// 140/140

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u/lionleaf

That's really neat!
u/Polyducks

This is amazing! What's the concept behind it? How are you getting the sphere?
u/cantelope

@Polyducks, it's a golfed version of the equation of a sphere [x=sin(p1)*sin(p2);z=cos(p2);z=cos(p1)*sin(p2);] combined with a tiny 3D projector, X=cx+1/z*x*cx; Y=cy+y/z*cx, where cx/cy is center screen, and x/y/z are the 3D coordinates. Hope that makes sense! :)
u/cantelope

*equation of a sphere: [x=sin(p1)*sin(p2);y=cos(p2);z=cos(p1)*sin(p2);]
u/alien

thanks for that, is projector a mathematical construct? does it have other names?
u/cantelope

@alien it's my own invention, the product of years of research into geometry. I wrote a tutorial with a (very ungolfed) version here https://cantelope.org/3D
u/alien

*__*
u/alien

All the lienar algebra and vectorial calculus in my bachelor finnally comes to life in my head... this is soooo cool @cantelope...
u/donbright

bravo... bravo

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cantelope

remix of d/2554 by u/cantelope

function u(t) {

w=960,v=340,x.fillRect(0,0,w*2,v*4)
for(i=99;i--;)for(j=59;j--;)X=i/2-25-C(t),Y=2+S(i/5)*S(j/5+t*3),x.clearRect(w+1/j*X*w,v+Y/j*w,s=99/j,s)

Apr 22 2017 6:43 PM UTC

}// 139/140

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cantelope

function u(t) {

cx=(c.width|=0)/2,cy=340
for(i=99;i--;)for(j=59;j--;)X=i/2-25-C(t)*2,Y=3+S(i/5)*S(j/5+t*3),x.fillRect(cx+1/j*X*cx,cy+Y/j*cx,s=99/j,s)

Apr 22 2017 6:28 PM UTC

}// 133/140

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u/innovati

🌊🏄
u/joeytwiddle

Beautiful
u/cantelope

innovati, i can't tell what those emojis are. lel.
u/Renaud___

great

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cantelope

remix of d/2392 by u/nonce

function u(t) {

k=frame,p=q=0
for(s=1;s<32;s*=2){a=1&k/2;b=1&k^a
if(!b){if(a)p=s-1-p,q=s-1-q;[p,q]=[q,p]}p+=s*a;q+=s*b
k=k>>2}x.lineTo(p<<5,q<<5),x.stroke()

Apr 2 2017 8:13 PM UTC

}// 140/140

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looks best fullscreen

u/donbright

these are great!!!

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veubeke

function u(t) {

t?_[Math.random(B=c.width^=0)*6|0]++:_=[0,0,0,0,0]
x.font='100px O'
_.map((v,i)=>x.fillText('🐌',110+v,$=200+i*179,x.fillRect(0,$-130,B,4)))

Mar 17 2017 10:17 PM UTC

}// 139/140

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Show more comments…
u/sigveseb

Lol!
u/veubeke

Fun hack: using *6 instead of *5 for the index adds a 6th element containing NaN. The 6th line is visible but not the snail because drawing the snail involves the NaN value.
u/gabrielsroka

neat, but are the snails going backwards?
u/innovati

you're too silly :3
u/tapgiles

What's with the _?
u/veubeke

@gabrielsroka: if you have an emoji font with a snail looking left then they’re going backwards, yes
u/lionleaf

Going backwards on my phone, but forwards on my laptop. This should be part of the snail emoji spec!!
u/veubeke

I’ll bring it up at the next snail emoji consortium meeting.
u/gabrielsroka

lol, they're soooo slow, they're going backwards. and yes, mine look left
u/gabrielsroka

according to http://emojipedia.org/snail/ Apple is in the minority, and Windows 8.1 looks left
u/magna

On my computer, the best snail always wins.
u/ilSilvano

Great idea! :-D
u/iverjo

#random
u/micahcowan

#emoji #snailrace

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recursive

remix of d/1976 by u/recursive

function u(t) {

for(d=256;--d;)for(X=-32;++X<32;x.fillRect(960+X*8e3/d,100+7e4/d-h,120,9))x.fillStyle=R(h=(C(a=d/9+t*6)+C(X/9+a/3))*35,g=h+C(X^d)*6+90,g/.8)

Mar 9 2017 12:33 AM UTC

}// 140/140

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Bluer waves

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u/sfz

Incredible
u/sigveseb

Epic
u/FireFly

This is crazy, great stuff :D
u/iverjo

Best water on dwitter thus far!
u/iverjo

I also tried to achieve this some time ago, but yours is much more convincing
u/iverjo

https://www.dwitter.net/d/65 and https://www.dwitter.net/d/254 and https://www.dwitter.net/d/295 and https://www.dwitter.net/d/366
u/recursive

Your idea gives really great color to the surface. I wonder if it's possible to animate the colors using your idea, and the wave geometry and lighting using mine.
u/magna

(ノಠ益ಠ)ノ彡┻━┻
u/Renaud___

very very nice
u/jsizzle

Seriously amazing. Wow
u/SpecialAgent

Bravo
u/ideokan

i am a web developre, feeling like a dumb monkey in here
u/PiggyClone205

Welcome to the club, ideokan.
u/Godcranberry

This sis amazing, totally my favorite
u/Godcranberry

is* mb fam
u/iverjo

#water
u/hollo47

#ocean
u/katkip

#waves
u/vain

Very nice and lovely wave

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New_Core

function u(t) {

c.width=1920;for(i=16;i--;)x.ellipse(1e3+300*S(t+i*.1),500+50*C(t+i*.1),160*S(-i*.5)+160,50*S(i*.1)+5,1.6+.5*S(t*.5),9.5,0,6.3);x.stroke();

Mar 3 2017 3:31 PM UTC

}// 139/140

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u/sfz

wow creative!
u/sfz

reduced it by about 15 bytes in case you want to try to do something else with the extra room: c.width|=0;for(i=16;i--;)x.ellipse(1e3+300*S(t+i/9),500+50*C(t+i/9),160*S(-i/2)+160,50*S(i/9)+5,1.6+S(t)/2,9,0,7);x.stroke()
u/iverjo

So good!
u/sigveseb

is that a pseudo-3D fish? super nice!
u/donbright

marvellous
u/magna

WAAAAT
u/SpecialAgent

Magnificent depth!
u/joseprio

Really impressive :)
u/Kalanchoe

Amazing!
u/ArtsyBiker1

WHOA
u/gautjac

beautiful
u/21medals

Reduced it ±20 bytes and added beginPath() without changing any values:
u/21medals

for(c.width|=i=16;a=i--/10;x.stroke())x.beginPath(),x.ellipse(1e3+300*S(t+a),500+50*C(t+a),160*S(-i/2)+160,50*S(a)+5,1.6+S(t/2)/2,9.5,0,6.3)
u/New_Core

#fish
u/joeytwiddle

#model
u/Cloud

https://www.dwitter.net/d/17352
u/vain

incredible 3d fish

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