func (m *Mass) SetSphere(density, radius Real) { C.dMassSetSphere((*C.dMass)(m), C.dReal(density), C.dReal(radius)) }
// SetSphere sets the mass for a sphere of given properties. func (m *Mass) SetSphere(density, radius float64) { c := &C.dMass{} C.dMassSetSphere(c, C.dReal(density), C.dReal(radius)) m.fromC(c) }