Revert "[meshlib] remove filepath from Mesh"

This reverts commit d24f7029.

ogstools/meshlib/ip_mesh.py

 from pathlib import Path
-from tempfile import mkdtemp
 from typing import TypeVar
 
 import numpy as np
@@ -197,10 +196,10 @@ def to_ip_point_cloud(mesh: Mesh) -> pv.UnstructuredGrid:
     for key in bad_keys:
         if key in _mesh.field_data:
             _mesh.field_data.remove(key)
-    tempdir = mkdtemp(prefix="to_ip_point_cloud")
-    input_file = Path(tempdir) / "ipDataToPointCloud_input.vtu"
+    parentpath = Path() if mesh.filepath is None else mesh.filepath.parent
+    input_file = parentpath / "ipDataToPointCloud_input.vtu"
     _mesh.save(input_file)
-    output_file = Path(tempdir) / "ip_mesh.vtu"
+    output_file = parentpath / "ip_mesh.vtu"
     ogs.cli.ipDataToPointCloud(i=str(input_file), o=str(output_file))
     return pv.XMLUnstructuredGridReader(output_file).read()
 

ogstools/meshlib/mesh.py

@@ -27,6 +27,8 @@ class Mesh(pv.UnstructuredGrid):
     Contains additional data and functions mainly for postprocessing.
     """
 
+    filepath: Path | None = None
+
     # pylint: disable=C0116
     @copy_method_signature(data_processing.difference)
     def difference(self, *args: Any, **kwargs: Any) -> Any:
@@ -94,6 +96,7 @@ class Mesh(pv.UnstructuredGrid):
         else:
             mesh = cls(pv.read(filepath))
 
+        mesh.filepath = Path(filepath).with_suffix(".vtu")
         return mesh
 
     @classmethod

ogstools/meshlib/mesh_series.py

@@ -245,6 +245,10 @@ class MeshSeries:
             mesh = Mesh(self.mesh_func(pv_mesh))
             if lazy_eval:
                 self._mesh_cache[timevalue] = mesh
+        if self._data_type == "pvd":
+            mesh.filepath = Path(self.timestep_files[data_timestep])
+        else:
+            mesh.filepath = Path(self.filepath)
         return mesh
 
     def rawdata_file(self) -> Path | None: