def fill_root_node(self, node: Node) -> None:
"""
Fill the root node with a random water composite object.
Parameters
----------
node : base.node.Node
The root node.
"""
molecule_center = setting.random_position()
particles = self._create_random_water_molecule(molecule_center)
for particle in particles:
node.add_child(Node(particle))
node.value = Particle(position=molecule_center)
def fill_root_node(self, node: Node) -> None:
"""
Fill the root node with a random point mass.
Parameters
----------
node : base.node.Node
The root node.
"""
node.value = Particle(
setting.random_position(), {
charge_value.charge_name: charge_value[0]
for charge_value in self._charge_values
})