void BasicFluidParticle::GetVelocity(cVector3d& velocity) { velocity.copyfrom(_velocity); }
void GEOParticle::GetVelocity(cVector3d& velocity){ velocity.copyfrom(_velocity); }
void BasicFluidParticle::GetPosition(cVector3d& position) { position.copyfrom(_position); }
void GEOParticle::GetPosition(cVector3d& position){ position.copyfrom(_position); }