b2.Fixture question

Scouser

I am playing around with Box2d and was wondering if there was any way of changing the density of a fixture once it has been created.

*edit*
Ok I have found the solution to this problem here. I should have used search Doh!!!

Scouser

Ok the solution was not what I wanted I want to move an edge shape dynamically when a collision occurs, can anybody tell me if this is possible and if so how??

ar2rsawseen

What purpose do you have for density? As far as I know, it will be possible to change Mass in next version. Maybe it will do?

Why recreating fixture is not working for you?

Scouser

@ar2rsawseen: I was again trying to be too smart. Now working the way I want. Unfortunately I just tested what I have written on my phone (ZTE Blade running @ 604MHz) and with only 26 bodies it crawls along @ 5fps, I get constant 60fps on iPod touch & iPad so I think I'm going to have to buy me one of these to develop on .

techdojo

It's amazing what a difference the floating point unit in Arm7 devices make.
What about implementing a "cut down" version of the physics library (maybe using fixed point) as a plugin - it'd be interesting to see how much faster you could make it