Dweets awesomed by u/robbyg

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.

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

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prplz

remix of d/9912 by u/prplz

function u(t) {

for(c.width|=0,i=17e3+t*99;i>0;i-=100)x.fillRect(i%1920,i%1080,i%99,i%99)

Oct 2 2018 5:40 AM UTC

}// 73/140

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u/iverjo

This reminds me of the old Windows 3.1 days

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yonatan

remix of d/10211 by u/BalintCsala

function u(t) {

for(k=i=1e3;z=i--/6;x.fillRect(k+S(m=(k*j&-b)**4)*r-z,z+C(m)*r,s=5e3/z,s))b=i%9>0,j=(i/k+t)%1,r=8e3/z+b*k/z,x.fillStyle=R(a=S(j*9)*99+z,a,a)

Oct 2 2018 5:23 AM UTC

}// 140/140

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Strange crystals v0.140b

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u/joeytwiddle

Blimey!
u/robbyg

I would love to read a write-up of this some time!
u/BalintCsala

They aren't really complicated, they draw a circle of rectangles with a pseudo random displacement to make it seem more natural. The track is just a bunch of rectangles
u/richev

Maybe not complicated once you understand how it works, but sure seems complicated to me. As @robbyg said, I'd love a detailed write-up.
u/yonatan

write-up: http://zozuar.org/txt/sc/
u/Joachim

#tunnel #cavern

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BalintCsala

function u(t) {

eval(unescape(escape`景爨欽椽㉥㌻椭ⴻ砮晩汬剥捴⡓⡴⤪稫㤶〫匨洽房⡫⩪簰⤪⨴㨰⤪爭猯㈬䌨琩⩺⬵㐰⭃⡭⤪爬猬房猺猯㤩⥢㵩┲㤬稽椯㤬樽⡩⽫⭴⤥ㄬ爽⡢㼱攴㨸攳⤯稬猽㙥㌯稬砮晩汬却祬攽刨愽㤹⭓⡪⨹⤪㠸ⱡⱡ⤻`.replace(/u(..)/g,"$1%")))//SC

Oct 2 2018 12:01 AM UTC

}// 140/140

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Strange crystals v0.140

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u/BalintCsala

Thanks to u/yonatan for making this possible
u/joeytwiddle

Strange crystals was a #js1k demo so wow! https://js1k.com/2013-spring/demo/1459 https://js1k.com/2013-spring/demo/1555
u/joeytwiddle

yonatan's 139 redux: for(k=i=2e3;i--;x.fillRect(960+S(m=(k*j&-b)**4)*r-z,540+C(m)*r,T=5e3/z,T))b=i%9>0,j=(i/k+t)%1,z=i/9,r=(b?1e4:8e3)/z,x.fillStyle=R(S(j*9)*z)
u/joeytwiddle

yonatan's 149 redux: for(k=i=2e3;i--;x.fillRect(960+S(m=(k*j&-b)**4)*r-z,540+C(m)*r,s=5e3/z,s))b=i%9>0,j=(i/k+t)%1,z=i/9,r=(b?1e4:8e3)/z,x.fillStyle=R(a=99+S(j*9)*99,a,a)
u/magna

Whoa!
u/lionleaf

#minecraft
u/iverjo

#witchcraft
u/Joachim

#tunnel

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Purpzie

remix of d/251 by u/lionleaf

function u(t) {

B=' BOTTLES OF BEER';O=' ON THE WALL. '
a=i=>i&&i+B+O+i+B+'. TAKE 1 DOWN, PASS IT AROUND, '+(--i)+B+O+a(i)
x.fillText(a(c.width=99),-t*99,9)

Oct 1 2018 8:23 PM UTC

}// 140/140

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fixed the grammar and made it funnier

u/donbright

bwahaha

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QXY

function u(t) {

c.width|=0;for(i=69;i--;){x.lineWidth=i,x.beginPath(),x.arc((o=i&1?-99:99)*2*C(t)*S(t*.2)+960,o*.9*S(t)*C(t*.7)+520,i**1.76,0,7),x.stroke()}

Sep 30 2018 7:37 PM UTC

}// 140/140

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boring interference :)

u/Xen

i love it :)
u/donbright

fascinatin
u/donbright

i was looking up Young's double slit - this reminds me of his original drawings he made in the early 1800s, https://bit.ly/2OsA1mh

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robbyg

function u(t) {

c.width|=0
x.translate(w=960,h=540)
for(i=9;i--;)x.rotate(S(i+t)/3),x.fillRect(i*99+S(t)*300-480,-99,50,200)
x.translate(-w,-h)

Sep 28 2018 2:33 PM UTC

}// 127/140

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Drunken #default

u/sigveseb

niiiice
u/f8f82804

the last line isn't needed; resettting the width also clears any transform
u/f8f82804

103: c.width|=0;x.translate(960,540);for(i=9;i--;x.fillRect(i*99+S(t)*300-480,-99,50,200))x.rotate(S(i+t)/3)

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Purpzie

remix of d/10129 by u/Purpzie

function u(t) {

for(c.width|=i=2e3;i--;)x.fillRect(960+200*C(a=0|i/6)*S(T(t/1)+i%6/a),540+200*S(a),9,9)

Sep 28 2018 1:38 AM UTC

}// 87/140

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even MORE golfed, 22 characters less than the very original

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yonatan

remix of d/10109 by u/Purpzie

function u(t) {

c.style.filter='invert(1';c.width=-1;for(i=50;i--;x.fillText(u,t*-33,2))x.setTransform(a=4+i*i/150,0,0,a,150,84),x.globalAlpha=1-(i/50)**.1

Sep 27 2018 2:30 AM UTC

}// 139/140

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u/joeytwiddle

Epic #quine
u/katkip

Genius
u/Purpzie

i'm just imagining this with the loud THX sound
u/magna

Whoa!
u/vain

stunning !!!

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ETHproductions

function u(t) {

for(i=8192,c.width=128,r=R,R=n=>~-r[i+n]-~r[i-n];i--;(R[i]=p+new Date%9/t/9>=3-r[i]&p<4)&&x.fillRect(i>>6,i%64,1,1))p=R(1)+R(63)+R(64)+R(65)

Sep 25 2018 6:06 PM UTC

}// 140/140

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Conway's Game of Life in 140b

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u/ETHproductions

Takes a second to get going due to the limitations on how I could kick it off. The 184b version looks much better; I may post it when I'm satisfied with it.
u/aemkei

Nice! #gameoflife
u/and3k5

How do you twist your brain to do this thinking? It's amazing!
u/katkip

That's a huge GOL
u/zanella

My new favourite dweet. :)
u/hells-fargo

i was waiting to find this somewhere on here! :D

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yonatan

function u(t) {

t?c.width|=0:U=V=Y=X=.1
d=X*X+Y*Y>1&&(X*U+Y*V)**.7
X+=U-=X*d
Y+=V-=Y*d-.01
x.arc(a=540,a,a,0,9)
x.arc(a+X*a,a+Y*a,40,0,9)
x.fill('evenodd')

Sep 25 2018 1:35 PM UTC

}// 139/140

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Phunky Physics

u/joeytwiddle

Fun! #bounce
u/cantelope

the last paramater of x.arc can be 7, 8, or 9 as a single digit that closes the circle.. i usually go with 7 because it's the closest integer > 2π, but it's interesting that you go with 9 usually :)
u/joeytwiddle

#physics

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