Re: Trickly Water

Robin Green <[email protected]>
Newsgroups gmane.games.devel.algorithms
Message-ID <[email protected]>
I think the initial question was about droplets on a camera surface. Water
droplets coalescing into larger droplets is more of a Poission points
problem than a noise one. As two droplets come into contact they will
generate a new droplet at the mean point between the two centers with a
radius proportional to their two volumes. Making them run down the picture
plane under gravitational accelleration means animating it's center and
altering it's mass as it picks up surrounding droplets. Trails could
probably be faked using a small heightfield that you decrement each frame.

The droplets themselves have a very specific shape depending on the surface
tension and hydrophilic properties of the surface they land on, specified by
the contact angle and the contact radius. These subtle curves around the
contact edge of the droplet are important cues to interpreting what is being
dropped onto what.

   http://physicaplus.org.il/zope/home/en/1185176174/water_elect_en

Trying to find a formula for the shape, ISTR it's a pretty regular analytic
polynomial.

- Robin Green.



On Wed, Jul 29, 2009 at 11:41 AM, Megan Fox <[email protected]> wrote:

> When it comes to morphing effects, your best bet is to start with noise.
>
>

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