what is means about the Parameters in NewtonBodyAddBuoyancyF

[disney]

what is means about the Parameters in NewtonBodyAddBuoyancyForce,such as primitive->m_density,0.8 , 0.8, gravity[0]
NewtonBodyAddBuoyancyForce (body, primitive->m_density, 0.8f, 0.8f, &gravity[0], PhysicsBouyancyPlane, (void*) trigger);

I ever made the "m_density=0.004, gravity=(0,-9.8*mass,0) ,the results looks Correct, why ?

[JernejL]

Check those functions wiki pages to find out what the parameters mean, the forum turned them into links for you

[disney]

what , the means about "primitive->m_density"
In wiki ,the "primitive->m_density" is fluid density,
the fluid density must be 1.0 ,why is primitive->m_density here?
beg to answer