Hi Stéphane,

> Hi
> 
> in odeco it seems that the weight of a ball is linked to its size.
> Is there a way to create light large bubble such as bubble soap flying 
> in the wind.
> 
> Stef
> You can find really intriguing projects using ODECO at 
> http://p7app.geneve.ch:8090/squeak/

You could see "density" slot at ODECo category in a viewer of
ODECo Field. Probably it is what you need. If you want
more complicated situation, see
ODEForceFieldMorph >> setODEStatus: and override it.

I have to make more fine interface...

Takashi