Nova Attractor?

djes · Post by **djes** » Sat May 09, 2009 11:17 pm

Maybe you found some sort of singularity, maybe already knowed, but the only thing I can say is : *It's really amazing!*

I didn't know how to use the zoom, but now... How beautiful!
I'll post this effect on french forum to see reacts

Post by **idle** » Sun May 10, 2009 1:23 am

The effect is really the result of dividing the new location by the constant ef and 1 over the sqr of the distance to the decay speed.

If you divide px and py by mx. You will see the shape of the function and if you look hard enough you'll see the man in the moon at the 45 degrees
you'll need to bump the gain though in the accum array up to ~1.6

Code: Select all

  

    dx = ox - stars()\x 
    dy = oy - stars()\y
    dz = Sqr(dx*dx+dy*dy)
    mx = stars()\speed * dz
    px = Int(scx + (Sin(dx) + Cos(dy)) * mx)
    py = Int(scy + (Cos(dx) - Sin(dy)) * mx)
    stars()\x + (px/mx) 
    stars()\y + (py/mx)  
    stars()\speed + 1/Sqr(dx*dx+dy*dy)

djes · Post by **djes** » Sun May 10, 2009 1:59 am

It was a good idea, after n iterations I doubt it's predictable! There's not even a little symmetry

Post by **idle** » Sun May 10, 2009 6:46 am

No it's not symmetric but using mx seems to show the unattenuated function regardless of where you click on the screen to reseed.
I guess the proof would be to remove the list and seed it with an a single x and y val and iterate that. I had a go but had to zoom in for ages.
I've managed to spend the whole day playing with it and it's still weird. It can produce all sorts of effects.

Post by **idle** » Mon May 11, 2009 2:27 pm

updated code 1st post

Post by **idle** » Tue May 12, 2009 4:00 am

updated added FFT to visualize to sound

compiled version only sorry - as it's littered with comments!
Set Record to WaveOut mix and adjust level to suit
Will add code to do it automatically later.

www.idlearts.com/nova.exe

djes · Post by **djes** » Wed May 13, 2009 6:05 pm

Here what I do to have nice results!
1. R to see much
2. Click on the lower right corner, wait a second
3. P to pause
4. Up and down to find how is made the universe

djes · Post by **djes** » Wed May 13, 2009 7:40 pm

We just have a wonderful moment listening to Bach on Muscime (http://www.musicme.com/#/Jean-Sebastien ... 70420.html#), with your program as spectrum analyser, one of the best I've seen!
Thank you again

Post by **idle** » Thu May 14, 2009 8:04 am

I tweeked it a bit more for visualization and added a delay so it's not using all the cpu, though it's still using way to much, the colors won't over saturate as much now, though it's only a quick fix.
I'll probably have some time to give it a good reaming (clean) later next week, I suspect the most cycles are spent getting the surface as opposed to setting the pixels. Can't see any other thing that would account for it.

Post by **idle** » Fri May 15, 2009 7:47 am

updated Visuals adding PI and Echo.

djes · Post by **djes** » Fri May 15, 2009 11:07 am

I think that it you can see more of the curves by extending the original random values... I tried a simple linear value

Code: Select all

    ForEach stars()
      stars()\x = u
      stars()\y = u
      stars()\color = stars()\color = RGB(Random(190)+64,62,0)
      stars()\speed = 1/Sqr(stars()\x*stars()\x + stars()\y*stars()\y)
      u+1
    Next

it's nice

Post by **idle** » Mon May 18, 2009 9:38 am

The values should really be the screen diagonal I guess.
Haven't had a chance to do anymore with it, been shifting house.
Anyway I'm happy enough with what it's doing but will probably look at it more later in the week.

Post by **idle** » Mon May 25, 2009 11:20 am

Updated exe few more modes and bit a better attenuation with FFT.
If you have waveout mix and XP it should select it automatically.

http://www.idlearts.com/nova.exe