[ODE] simple cable simulation

Patrick Enoch Hendrix_ at gmx.net
Wed May 16 09:08:52 MST 2007


how did you link the last ("end") boxes from the chain to the "ends" geoms?
Dont you need bodies to link joints against?


-------- Original-Nachricht --------
Datum: Wed, 16 May 2007 15:07:50 +0200
Von: "François Bruneau" <francois.bruneau49 at gmail.com>
An: ode at ode.org
Betreff: [ODE] simple cable simulation

> Hi,
> I'm working on a simple cable simulation using ODE. Currently the
> static behaviour is satisfactory, but trouble happens when I try to
> change interactively the position of one end of the cable.
> My model is simplistic: it is basically a chain of cubes connected
> with ball joints.  Each ball joint's anchor is located in the middle
> of the interspace between two cubes. To make each end unmovable I use
> geoms without bodies. This way I get a cable suspended in the air.
> When I start the simulation, the chain correctly bends and bounces
> under the effect of gravity. But when I interactively move the Geom
> located at one end of the cable, the chain doesn't bend to follow this
> change.
> The only change I observe is when I move the end cube towards the
> other end of the chain, in that case the collision is detected, and
> the chain goes under the moving cube. But that's not a ball joint
> related behaviour...
> Does any one have successful experience of cable modelling with ODE?
> Any help appreciated.
> Thanks in advance.
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