meshing.CrossingEdges
meshing.CrossingEdges()Lattice edges whose endpoint field values straddle the isovalue.
Attributes
| Name | Type | Description |
|---|---|---|
| axis | np.ndarray | Edge direction per edge, 0/1/2 for x/y/z, shaped (edge_count,). |
| index | np.ndarray | Lattice coordinates of each edge’s start vertex, shaped (edge_count, 3). |
| start_inside | np.ndarray | Whether the start vertex was inside (value < level) at detection time, shaped (edge_count,). Root refinement bisects against this frozen orientation, which keeps it robust when a lattice vertex lies exactly on the surface and its re-evaluated sign is float noise. |