warp.fem.cells

warp.fem.cells = <warp._src.fem.operator.Operator object>

Convert a side domain to a cell domain, or a traced field to its cell-level field.

When applied to a Domain defined on sides, returns the corresponding cell domain. When applied to a traced Field, returns the underlying cell-level field for correct evaluation at cell-space samples (e.g., from lookup() on a cell domain).