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Member Since 14 Feb 2013
Offline Last Active Feb 20 2013 06:49 AM

Topics I've Started

Scaling physics simulations

14 February 2013 - 08:45 AM

Hi, i'm having trouble using an integrated version of ODE, basically i'm modelling a golfball. If I use the correct dimensions, mass, friction, etc the collision detection fails unless I raise the iteration step very high, however this is intended for the Android market so that's a no no.


I'm attempting to scale everything manually.


If I remember correctly if scaling by 2 the volume is multiplied by 8, but in this case should I multiply the mass by 8 or by 2?


That beside, in tests the angular velocity seems totally off. I initially (before scaling) apply an angluar impulse of 500 radians per second, after scaling this looks very slow, so I doubled it, and then multiplied it by 8, but still it appears wrong. Should I be ammending the friction, dampening, bounce, etc?



Thanks for any help...




(I've not prefixed this with ODE since I believe it applicable to all really?)