Dweets awesomed by u/prplz

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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katkip

remix of d/10247 by u/katkip

function u(t) {

c.width^=0;x.translate(960,540);for(i=0;i++<90;)x.lineTo(0,i*15),
x.rotate(i/6),x.fill(),x.globalCompositeOperation='xor'

Oct 5 2018 9:55 AM UTC

}// 121/140

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#abstract

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prplz

remix of d/9912 by u/prplz

function u(t) {

x.strokeRect(960+C(t*=3)*300,540+S(t)*300,T(t*=10)*9,T(t)*9)

Oct 4 2018 7:45 AM UTC

}// 60/140

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u/13thptr

nice sub-64 #abstract
u/13thptr

art
u/13thptr

*

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prplz

remix of d/10091 by u/prplz

function u(t) {

for(let X,Y=33,r;Y--;)for(X=59;X--;x.fillRect(X*33,Y*33,33,33))x.fillStyle=R(0,r=S((X*X&Y*Y)**.3+t*5)*99+99,r*2)

Oct 3 2018 7:14 AM UTC

}// 112/140

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u/DataMeta

Mhmmm
u/donbright

fun

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donbright

remix of d/10189 by u/QXY

function u(t) {

K=256
X=t**8%2e3
Y=t**9%2e3
for(j=t**7%69+29;j>0;j--){x.lineWidth=3
x.strokeStyle=R(Y%K,K-j,X%K)
x.beginPath()
x.arc(X,Y,j,0,7)
x.stroke()}

Oct 3 2018 1:07 AM UTC

}// 139/140

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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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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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katkip

function u(t) {

c.style.background='#0af';c.width*=1;for(a=(2+t*t)|0;a--;x.lineTo(C(a+b*b+t)*S(b+a*a+t)*960+960,S(b)*540+540,i=b/40-5,i))b=4*a*a;x.fill()

Oct 1 2018 12:35 PM UTC

}// 137/140

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#waitforit to see the electric waves simulation

u/loni_art

crystalline!
u/donbright

ok now this is something that is extremely unique

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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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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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