Get vertices coordinates for the given mesh

There are at least three ways to get vertices coordinates:

1. Iterate over valid vertices and read coordinates:

from meshlib import mrmeshpy as mm
mesh = mm.loadMesh("some_mesh.stl")
# no need to pack here because we iterate over valid vertices only
for v in mesh.topology.getValidVerts():
    coord = mesh.points.vec[v.get()]
    print ( coord.x, coord.y, coord.z )

2. Take all vertices coordinates (even invalid ones, e.g. removed from mesh but still present in list while may be not packed) as list of mrmeshpy.Vector3f

from meshlib import mrmeshpy as mm
mesh = mm.loadMesh("some_mesh.stl")
# stl files are always packed, but if you did some operations you might need to pack mesh to eliminate invalid vertices from `points`
# mesh.pack()
points = mesh.points.vec # this data type can be used as standard python list

3. Extract vertices as numpy array

from meshlib import mrmeshpy as mm
from meshlib import mrmeshnumpy as mn
import numpy as np
mesh = mm.loadMesh("some_mesh.stl")
# stl files are always packed, but if you did some operations you might need to pack mesh to eliminate invalid vertices from `points`
# mesh.pack()
vertsNP = mn.getNumpyVerts( mesh ) # same as `mn.toNumpyArray( mesh.points )` or `mn.toNumpyArray( mesh.points.vec )`