Dweets awesomed by u/sigveseb

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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cantelope

remix of d/2845 by u/cantelope

function u(t) {

A=960,B=540,x.fillRect(0,0,D=2e3,D)
for(i=D;i--;)x.clearRect(A+1/(Z=2.5+C(p=i*C(t/2)/40)*S(q=i/628))*(X=S(p)*S(q))*A,B+C(q)/Z*A,s=69/Z/Z,s)

Jul 10 2017 4:43 AM UTC

}// 140/140

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Show more comments…
u/lionleaf

That's really neat!
u/Polyducks

This is amazing! What's the concept behind it? How are you getting the sphere?
u/cantelope

@Polyducks, it's a golfed version of the equation of a sphere [x=sin(p1)*sin(p2);z=cos(p2);z=cos(p1)*sin(p2);] combined with a tiny 3D projector, X=cx+1/z*x*cx; Y=cy+y/z*cx, where cx/cy is center screen, and x/y/z are the 3D coordinates. Hope that makes sense! :)
u/cantelope

*equation of a sphere: [x=sin(p1)*sin(p2);y=cos(p2);z=cos(p1)*sin(p2);]
u/alien

thanks for that, is projector a mathematical construct? does it have other names?
u/cantelope

@alien it's my own invention, the product of years of research into geometry. I wrote a tutorial with a (very ungolfed) version here https://cantelope.org/3D
u/alien

*__*
u/alien

All the lienar algebra and vectorial calculus in my bachelor finnally comes to life in my head... this is soooo cool @cantelope...
u/donbright

bravo... bravo
u/ximavus

Amazing!

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donbright

remix of d/2839 by u/alien

function u(t) {

w=c.width=115
for(j=w;j--;)
for(i=w;i--;)q=2*i*j*S(t)+C(t)*(i**2+j**2),x.fillStyle=R(s=(q*q*frame>>t)%255,s,s*3),x.fillRect(i,j,1,1)

Jul 10 2017 3:22 AM UTC

}// 132/140

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remixing @alien color + code with some of my old binary quadratic forms stuff (aka circles and squares pseudo fractals)

u/cantelope

cool donbright
u/donbright

thx cantelope

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alien

remix of d/2841 by u/alien

function u(t) {

w=c.width=180
f=frame
for(j=0;j<w;j++)
for(i=0;i<w;i++){
q=(i*i+j*j)**(3)+f&200
s=i*C(q)
s%=255
x.fillStyle=R(s,s*2,s)
x.fillRect(i,j,1,1)}

Jul 7 2017 7:36 PM UTC

}// 140/140

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Wow much patterns such wow...

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alien

remix of d/2835 by u/alien

function u(t) {

w=c.width=180
f=frame
for(j=0;j<w;j++)
for(i=0;i<w;i++){
q=i*i+j*j
s=i*C(q)+(f%2)
s%=255
x.fillStyle=R(s*2,s*2,s*3)
x.fillRect(i,j,1,1)
}

Jul 6 2017 8:09 PM UTC

}// 140/140

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u/sigveseb

This is the prettiest dweet I've seen in a long time :)
u/alien

oh thank you :D
u/donbright

great colors

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alien

remix of d/2832 by u/alien

function u(t) {

c.width=200
f=frame
for(j=0;j<51;j++)
for(i=0;i<51;i++){
s=i*i%+j*j+f*3
s%=255
x.fillStyle=R(s*2,s*3,s*4)
x.fillRect(i*2,j*2,4,4)
}

Jul 5 2017 7:00 PM UTC

}// 133/140

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OK WTF!!!!

u/sigveseb

Cool :D
u/donbright

these have a really cool feel, not sure how to describe it but its definitely different. reminds me a little bit of 8 bit art but not exactly.

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alien

function u(t) {

c.width=200
f=frame
for(j=0;j<51;j++)
for(i=0;i<51;i++){
x.shadowBlur=9
x.shadowColor='#AF'+f%9
if((i^j+f)%3){
x.fillRect(i*2,j*2,2,2)}
}

Jul 5 2017 6:34 PM UTC

}// 139/140

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u/sigveseb

Good patterns

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New_Core

remix of d/2828 by u/New_Core

function u(t) {

for(i=768;i--;)i<216?(a=0,b=5*i,d=2e3,e=5,f=t):(e=1080,a=5*i-e,b=0,d=5,f=t*2),x.fillStyle=`hsla(${i+99*S(f)},99%,50%,.5`,x.fillRect(a,b,d,e)

Jul 5 2017 8:51 AM UTC

}// 140/140

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tried same with function.. still 140 ;) F=(e,d,a,b)=>x.fillRect(a,b,d,e);for(i=768;i--;x.fillStyle=hsla(${i+99*S(f)},99%,50%,.5)i<216?F(5,2e3,0,5*i,f=t*2):F(g=1080,5,5*i-g,0,f=t)

u/New_Core

lol and now I wonder why I didnt just do this from beginning.. for(i=768;i--;x.fillStyle=hsla(${i+99*S(f)},99%,50%,.5)i<216?x.fillRect(0,5*i,2e3,5,f=t):x.fillRect(5*i-1080,0,5,1080,f=t*2)
u/New_Core

#colorshock

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alien

function u(t) {

c.width=200
f=frame
for(j=0;j<51;j++)
for(i=0;i<51;i++){
x.shadowBlur=9
x.shadowColor='#AF'+f%9
if((i&j)%(f%51))x.fillRect(i*2,j*2,2,2)
}

Jul 4 2017 9:34 PM UTC

}// 139/140

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u/cantelope

neat!
u/alien

by the way i just rage quit doing Sierpinski carpet... can any one help me :(
u/sigveseb

Nice stuff

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yonatan

remix of d/2643 by u/yonatan

function u(t) {

c.width=128;for(J=X=64;X>-J;X--)for(K=Y=32;Y>-K;Y--)D=(X*X+Y*Y)**.5,x.fillStyle=`hsl(${D-t*99^T(X/Y+t*9)},50%,${D}%`,x.fillRect(X+J,Y+K,1,1)

Jun 4 2017 11:28 PM UTC

}// 140/140

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prawnwarp

function u(t) {

c.width|=0;for(i=0;i<80;i++){x.moveTo(960,540);x.lineTo(960+20000*S(t+T(i*.71)),540+2000*C(t+S(i*0.31)));x.stroke();}

Jun 3 2017 1:55 AM UTC

}// 117/140

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u/jonestaylor

what is this ?
u/joeytwiddle

a simulation of the inside of a loom perhaps

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