ProbeAddTask

The probe tasks of field-presentation §FVO-2 (phase 7): pinned points of a tet volume or a mesh item and their values, a line of samples, and the statistics of a field over a region.

In the namespace construct::opal. Declared in src/libs/libconstruct/construct/opal/ProbeTasks.hpp.

Detailed description

A probe stores a point in the item's frame, never a value: a change of the shown field, a new solve or an axis step reads the new value at the same point (§FVS-5). The probes are the `points` of the item's `probes` presenter, so each change is one undo step and the document saves them.