triple_r <nomail@nomail> wrote:
> In all fairness, there are better methods.  Think of dividing all the particles
> up into an octree.  A whole group of particles at a distance can be lumped into
> one mass.

  But you have to calculate the center of mass of the whole group, and
since each element of the group can change independently of the others,
that would mean you have to re-calculate this center of mass each time
anything changes.

  Also another problem is that groups don't stay the same. If a particle
not belonging to the group enters the "inside" of the group, it cannot
be calculated anymore against that group as if it was just one single
mass located at the center of mass of the group.

-- 
                                                          - Warp

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