[ODE] The pushing of a morphing model

[Bram Stolk]

On Sat, 2007-01-13 at 10:31 +0100, Zanshin wrote:
> 
> c- (hardest) There's an ethereal cube that occupies no space. It
> gradually turns "real", pushing other objects away from it's center.
> 

Tricky stuff indeed.

Maybe you can fake it by varying the "Error Reduction Parameter" (ERP).

Start by having it 0.0 (Is this legal in ode?) and slowly increase this.
I would do this logarithmically:
t=0.0 sec : ERP = 0.000000
t=1.0 sec : ERP = 0.000001
t=2.0 sec : ERP = 0.000010
t=3.0 sec : ERP = 0.000100
t=4.0 sec : ERP = 0.001000

I think this will give you the effect that you are after.

Make the cube a geom without a body, and only affect the
ERP for contacts that involve this cube.
I think this would work.

  Bram