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VTK second order cells for pyvista backend #48

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Merged
jorgensd merged 2 commits into from
May 12, 2026
Merged

VTK second order cells for pyvista backend #48

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1b21a88
Bump version: 1.1.2 → 1.2.0
jorgensd May 5, 2026
1329a1d
Add second order VTK cells to pyvista backend at the request of @Mari…
jorgensd May 12, 2026
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4 changes: 2 additions & 2 deletions pyproject.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ requires = ["setuptools>=61.0.0", "wheel"]

[project]
name = "io4dolfinx"
version = "1.1.2"
version = "1.2.0"
description = "Checkpointing functionality for DOLFINx meshes/functions with ADIOS2"
authors = [
{ name = "Jørgen S. Dokken", email = "dokken@simula.no" },
Expand Down Expand Up @@ -99,7 +99,7 @@ tag = true
sign_tags = false
tag_name = "v{new_version}"
tag_message = "Bump version: {current_version} → {new_version}"
current_version = "1.1.2"
current_version = "1.2.0"


[[tool.bumpversion.files]]
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13 changes: 13 additions & 0 deletions src/io4dolfinx/backends/pyvista/backend.py
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Expand Up @@ -44,6 +44,14 @@
74: "pyramid",
}

_quadratric_vtk = {
21: "interval",
22: "triangle",
23: "quadrilateral",
24: "tetrahedron",
25: "hexahedron",
}


read_mode = ReadMode.serial

Expand Down Expand Up @@ -161,9 +169,14 @@ def read_mesh_data(
if (cell_type := cell_types[0]) in _first_order_vtk.keys():
cell_type = _first_order_vtk[cell_type]
order = 1
elif cell_type in _quadratric_vtk.keys():
cell_type = _quadratric_vtk[cell_type]
order = 2
elif cell_type in _arbitrary_lagrange_vtk.keys():
cell_type = _arbitrary_lagrange_vtk[cell_type]
order = _cell_degree(cell_type, cells.shape[1])
else:
raise NotImplementedError(f"Cell type {cell_type} not supported in Pyvista backend.")
perm = dolfinx.cpp.io.perm_vtk(dolfinx.mesh.to_type(cell_type), cells.shape[1])
cells = cells[:, perm]
lvar = int(basix.LagrangeVariant.equispaced)
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