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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yonatan

function u(t) {

c.width=99
for(i=0;i++<6e3;x.fillRect(X,Y,1,1))Y=i/99|0,X=i%99,U=X-50,V=Y-30,h=S((U*U^V*V^t*t)**.2-t*9),x.fillStyle=R(n=99+h*99,n*2,n*3)

Oct 2 2018 9:30 PM UTC

}// 136/140

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u/donbright

omg
u/donbright

i feel like you could write an entire book explaining your dweets, one dweet per chapter, it would be like 300 pages
u/Qwitter

yikes how did you find this! Awesome

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Xen

function u(t) {

x.font='99px"',x.globalAlpha=.1,x.fillRect(0,0,2e3,1e3)
for(i=499;i--;)x.fillText('🔥',1e3+S(i+t*C(t*t-i%9))*(2e3-i*4),1e3-i/9*(t*i%15))

Oct 2 2018 5:30 PM UTC

}// 135/140

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u/donbright

awesome

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atgz

remix of d/10172 by u/Purpzie

function u(t) {

for(c.width|=i=0;i<361;i++)x.fillStyle=R(C(i)*(a=C(t*i/360))*255,S(i)*a*255,3e4/i),x.fillRect(C(i)*a*i+960,S(i)*a*i+540,k=i/18,k)

Oct 2 2018 12:55 PM UTC

}// 129/140

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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

Show more comments…
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

Show more comments…
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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