Dweets awesomed by u/artfarnaa

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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dogspace

remix of d/10262 by u/E-Mouse

function u(t) {

for(i=2e3;i--;x.fillStyle=R(C(t)*128+128,0,S(i)*128+128,.07))x.fillRect(960+S(p=i/314)*(d=250+T(p*3+t)*(T(t)*99)*T(t)*1),540+C(i)*d,9,9)

Oct 6 2018 6:03 PM UTC

}// 136/140

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E-Mouse

remix of d/8270 by u/E-Mouse

function u(t) {

for(i=2e3;i--;x.fillStyle=R(C(t)*128+128,0,S(i)*128+128,.07))x.fillRect(960+S(p=i/314)*(d=250+T(p*3+t)*(T(t)*99)*T(t)*1),540+C(p)*d,9,9)

Oct 5 2018 9:03 PM UTC

}// 136/140

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u/donbright

i never imagined fillstyle could do so much

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prplz

remix of d/8236 by u/sawaxon

function u(t) {

for(j=0;j++<600;)for(i=0;i<6;x.rotate(86))x.fillStyle=`hsl(${++i*50} 99%50%`,x.fillRect(j*4,0,99,99)

Oct 5 2018 11:44 AM UTC

}// 100/140

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THORinHOOD

function u(t) {

w=c.width=1920
h=1080
s=20
q=h/4
for(j=0;j<q;j+=40)for(i=1,d=t;i<99;i++)d-=C(t)/i,x.fillRect(w/2*(C(d)*S(d)+1),-Math.exp(S(d))*h/4+h-j,s,s)

Oct 3 2018 8:32 PM UTC

}// 139/140

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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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Purpzie

remix of d/10149 by u/Purpzie

function u(t) {

for(i=64;i--;)x.fillStyle=`hsl(${i*5+t*30} 60%${S(t*3)*25+50}%`,x.fillRect(i*30,S(4*t+3*i)*99,20,99);x.drawImage(c,S(t)*5,5+(0|C(t))*5)

Oct 1 2018 7:40 PM UTC

}// 135/140

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ellisk1

function u(t) {

c.width|=q=.2992;x.translate(960,540);for(i=0;i<329;i++)x.rotate(q+(i%22?0:q/2)+(i<1)*t),x.fillRect(a=((i/22|0+t/2)+2*t)%15*50,a,w=a**.75,w)

Sep 30 2018 11:45 PM UTC

}// 140/140

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Changing Circular Patterns

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Xen

remix of d/10189 by u/QXY

function u(t) {

for(c.width|=i=99;i--;x.stroke())x.lineWidth=i,x.beginPath(),x.arc((o=i&1?-99:99)*2*C(t)*S(t*.2)+960,o*5*S(t*3)*C(t)+520,i**2,0,7)

Sep 30 2018 9:57 PM UTC

}// 130/140

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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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