gonzales.lib.octree

• gonzales.lib.octree.calc_accs_octree(w, r_x, r_y, r_z, r, m, G, eps, theta)

  Parallel calculation of accelerations using the Barnes-Hut algorithm. Constructs the

  octree and calculates the accelerations.

  param w

  double, root node width

  param r_x

  double, x-coordinate of root node center

  param r_y

  double, y-coordinate of root node center

  param r_z

  double, z-coordinate of root node center

  param r

  N x 3 numpy array, position vectors of the particles

  param m

  N x 1 numpy array, mass vector of the particles

  param G

  gravitational constant

  param eps

  gravitational softening

  param theta

  threshold parameter

  return

  N x 3 numpy array, acceleration vectors of particles