def spheres_intersect(ar, aR, br, bR):
"""Return whether or not two spheres intersect each other.
Parameters
----------
ar, br: array-like, shape (n,) in n dimensions
Coordinates of the centres of the spheres `a` and `b`.
aR, bR: float
Radiuses of the spheres `a` and `b`.
Returns
-------
intersecting: boolean
True if the spheres intersect.
"""
return vector.vector_mag_sq(ar - br) < (aR + bR) ** 2
def get_xyzs_actual(self, R_min):
return [xyz[vector.vector_mag_sq(xyz) > R_min ** 2]
for xyz in self.xyzs]
def valid_func(r):
return (self.valid_func(r) and
vector.vector_mag_sq(r) > R_min ** 2)
def _is_obstructed(self, seps):
return vector.vector_mag_sq(seps) < self.R ** 2.0
