Dweets awesomed by u/BriSeven

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: #Food

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nonce

function u(t) {

c.width=600
x.font='9em a'
x.fillText(['🚗','🚃','🚙','🚚','🚌'][(_=~~(t/2))%5],620-(t*512&1023),250)
c.style.filter=`hue-rotate(${_*60}deg`

Mar 31 2017 3:41 AM UTC

}// 135/140

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Traffic

u/nonce

(count the colors)
u/cantelope

i think i saw my car!

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mxfh

remix of d/2327 by u/nonce

function u(t) {

with(x)font='9em s',fillStyle=`hsl(${S(t*8)*180},90%,${t%.3<.1?70:0}%)`,fillText('ᗋ',905,560),drawImage(c,-20,-10,1960+S(t),1100)

Mar 28 2017 12:00 PM UTC

}// 129/140

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Show more comments…
u/sfz

hey, which way to the rave? oooohhhhhhHhhhHhhHhHhhh...
u/sigveseb

cool tunnel :D
u/recursive

Reminds me of clockwork orange.
u/nonce

Love it! did a quick remix with the Russian П in sans-serif just to see what a tunnel might look like: https://www.dwitter.net/d/2332 and got a weird thing happening on the floor. :-)
u/mxfh

Trigrams ☱ and 🀹 Domino tiles work great too. Still if anyone could offer a 1D Noise/Pattern method for pure slit-scan goodness? https://vimeo.com/41747091
u/donbright

Ffonzie's favorite dweet
u/nonce

holly molly: ∩
u/hjroh0315

...So this is what we call a wardrobe malfunction.
u/iverjo

#tunnel
u/mxfh

#trippy #cavern
u/mxfh

#trippy #cavern
u/mxfh

#trippy #cavern

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p01

function u(t) {

for(c.width=i=192,c.style.background='#964';i--;)i&6?x.fillRect(i*i%187,i,9,.2):x.fillText([...'👧📚👺👹'][i&&3-i%3],96+i*S(i),54-i*C(i))

Mar 6 2017 9:46 PM UTC

}// 133/140

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ABRACADABRA - 137bytes demake of my JS1k game http://js1k.com/2017-magic/demo/2758

u/sfz

Nice trick with the spread operator to save a few bytes!
u/sfz

And the decimal Y for fake alpha, this one's packed!
u/tapgiles

Is it meant to move? I feel dumb... @.@
u/p01

Sorry but this dweet was too complex to animate.There's a background color, some kind of wood texture, and 3 types of sprites rendered in a pattern.

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veubeke

function u(t) {

c.width^=o=0;for(i=30;i--;x.stroke())P=Math.PI,$=S(t%P),_=C(i/5)*$,x.beginPath(o+=3-$+_),x.ellipse(o*4+t*60-300,(21+_-S(t%P))*50,9,30,0,0,7)

Mar 6 2017 5:39 PM UTC

}// 140/140

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Inspired by https://www.dwitter.net/d/1829

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FireFly

function u(t) {

for(c.width|=i=0;i<40;i+=.025)R=S(t)/4+.25,r=.7-R,x.fillRect((A=R+r*S(D=i%1*44+88))*C(E=i+t/10)*480+960,(B=A*S(E)+r*C(D))*340+510,W=4-B*3,W)

Mar 6 2017 12:46 PM UTC

}// 140/140

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Torus-sphere thing

u/donbright

good one
u/SpecialAgent

excellent

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tomkh

function u(t) {

for(c.width=i=1920;i--;){for(g=30,h=63&i,v=i>>6,e=g,k=20;k--;)r=S(k-t)+1-h/g,d=C(3*k+t)+1-v/g,e-=1/(d*d+r*r+.02);x.fillRect(h*g,v*g+99,e,e)}

Mar 5 2017 7:34 PM UTC

}// 140/140

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u/FireFly

Sweet! I need to read up on how to metaballs
u/SpecialAgent

Nice!
u/donbright

great!!!
u/iverjo

Impressive!
u/iverjo

#metaballs
u/vain

This looks so fucking cool! Unbelievable this is produced by only 140 chars of code

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recursive

function u(t) {

c.width=256;
for(X=255;X--;)for(Y=144;Y--;)
if((q=C(X/8+C(t*7))+C(Y/8+S(t*8))-C(t*3)*2)>0?q<.2||X+t*30&4:Y+t*30&4)x.fillRect(X,Y,1,1)

Mar 5 2017 6:27 PM UTC

}// 133/140

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veubeke

function u(t) {

for(i=1920;a=i--/400;x.fillRect(i,400+t*70+_*15,1,99))_=C(a+t)*3+C(a-t)*8+(r=i*i/t%1),
x.fillStyle=`hsl(${140-t*4+_},80%,${40-t*2-_-r*9}%)`

Mar 5 2017 5:05 PM UTC

}// 140/140

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Show more comments…
u/iverjo

Nice :) This reminds me of the classic Windows XP desktop background image
u/sigveseb

very nice! can we squeeze in a blue sky?
u/veubeke

I’m trying ^^
u/magna

Not enough Unicode cows. Back to work!
u/Beginner

Amazing!
u/FENRIR

windows xp start up sound went to my head
u/iverjo

#grass
u/joeytwiddle

#landscape
u/vain

Cool and interested way to draw this landscape!

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FireFly

function u(t) {

for(c.width|=M=Math,i=2e4;i--;x.fillRect(A*8,B*8,W=9+M.atan2(M.sqrt(1-X*X-Y*Y),X)*3-t*4&7^4-M.asin(Y)*3,W))X=(A=i%135)/67-1,Y=(B=i/135)/67-1

Mar 4 2017 6:26 PM UTC

}// 140/140

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Raycasted rotating sphere with UV-mapping!

Show more comments…
u/sfz

... ??? !!!
u/iverjo

Impressive! I like the c.width|=M=Math hack. Apparently Math is evaluated to NaN in the process.
u/iverjo

http://stackoverflow.com/a/11037887/2319697
u/alien

god... i can't understand this yet but is awesome...
u/sigveseb

So good!
u/donbright

standing ovation
u/tomkh

great job! some tricks here really opens new possibilities
u/mxfh

you can do M.sqrt() with ES6 power operator as **.5 should yield a net gain of 2 chars
u/FireFly

Oh right! I haven't gotten used to it yet since I'm on Fx51, which doesn't seem to support ** yet. Thanks!
u/FireFly

Oh, and also thanks for all the positive responses, everyone :)
u/iverjo

#sphere
u/lionleaf

#disco
u/f8f82804

#halftone #dithering #shading

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sebbert

function u(t) {

c.width=999;for(a=b=z=0,w=140;z<400;z+=.1)a=S(a*2.4-t)*S(t*2)+C(a+b+t)+C(z*2.34+t),b=C(z*1.56),x.fillRect(a*w+500,b*w+w+w,2,2)

Mar 4 2017 12:59 AM UTC

}// 126/140

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u/donbright

woah!
u/SpecialAgent

Energize!
u/FireFly

This one is really cool o.o
u/FireFly

I would love an explanation or pointer about the maths going on here… in particular I don't understand why the 1.56 constant for the b= is so sensitive. It looks like an approximation of π/2, but all of π/2, 1.57 and 1.5 behave vastly differently/more chaotically. So what's the relationship between these numbers/how is 1.56 derived?
u/tapgiles

What the... @.@ Looks so detailed!
u/joeytwiddle

Some other constants with similar behaviour: 1.17, 2.34, 3.12, 3.51, 3.90, 4.68, 6.24
u/joeytwiddle

And a few with different behaviour: 3.08, 6.05 (!), 6.35

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