I/O#

Conversion between PhysicsNeMo Mesh objects and PyVista meshes. Because PyVista supports a wide range of file formats (VTK, STL, PLY, OBJ, and many others), this module serves as the primary I/O gateway for PhysicsNeMo-Mesh.

from_pyvista()

Convert a pyvista.PolyData or pyvista.UnstructuredGrid to a Mesh. Point data and cell data arrays are carried over.

to_pyvista()

Convert a Mesh to a pyvista.PolyData (for surface meshes) or pyvista.UnstructuredGrid (for volume meshes).

import pyvista as pv
from physicsnemo.mesh.io import from_pyvista, to_pyvista

# Load any format PyVista supports
pv_mesh = pv.read("geometry.stl")
mesh = from_pyvista(pv_mesh)

# Work with the mesh in PhysicsNeMo...
mesh = mesh.subdivide(levels=1, filter="loop")

# Export back to PyVista for saving or visualization
pv_out = to_pyvista(mesh)
pv_out.save("refined.vtk")

API Reference#

I/O utilities for PhysicsNeMo Mesh.

This module provides functions to convert between PhysicsNeMo Mesh and other mesh formats, particularly PyVista.

Submodules that depend on optional packages are loaded lazily via the module-level __getattr__ (PEP 562) so that import physicsnemo.mesh.io succeeds without those packages installed; the import only fails when the attribute is actually accessed.

On this page