Neat! I actually kind of like the individual particles instead of a cloud-
makes it look like some kind of magic ;)

"Tim Nikias" <tim### [at] gmxde> wrote in message
news:3C8B988F.9FF48E11@gmx.de...
> Here's my newest test-animation.
>
> The metal tube is a CSG-Spline made
> of spheres and cylinders. The Spline was
> calculated using a Bezier-Spline-Algorithm
> I implemented myself.
>
> The Particles are emitted from the designated
> Spline and are forced outwards due to centrifugal
> forces.
>
> Actually, I implemented an algorithm to calculate
> a centrifugal-force on a given Bezier-Curve. This
> was not that easy, since I had to adjust the algorithm
> to not try to calculate a position after or before the
> defined spline (when thinking in values of 0 to 1,
> -.1 and 1.1 aren't allowed, simple as that).
> Also, when the calculations made in detail seem to
> result in no centrifuge on a bezier-spline, the
> algorithm expects that the intervals had been taken
> too small and increases them.
>
> Another new addition running in the background
> of the system is to leave particles out of calculation
> process. I hadn't implemented it beforehand, simply
> because it escaped my mind that I could have a
> new random-stream for every particle.
>
> So, these are 250 frames, with about 10sec parsing
> and 25 secs tracing per frame, with up to 400
> particles, 250 spheres and 250 cylinders, along with
> a media-sphere for the glow-effect, a lightsource
> and the camera. Due to tracing interruptions (never
> trace and modify the code when using random-streams)
> I can't tell the overall time of parsing and tracing.
> (Oh: 1.4 GHZ, 512 MB Ram, Win98)
>
> Comments? (Aside that I should have used more particles
> to make it look more like a cloud than individuals)
>
> --
> Tim Nikias
> Homepage: http://www.digitaltwilight.de/no_lights/index.html
>
>

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