SolveCompare

The comparison of a tet volume: `typeData.feaSolve.compare` (field-presentation §FVE-11).

In the namespace construct::model::presentation. Declared in src/libs/libconstruct/construct/model/presentation/SolveHistory.hpp.

Detailed description

`with` is the field-set hash of the kept solve, `mode` is `side` (the two copies side by side) or `difference` (the color presenter shows the `difference` kernel). `colorBefore` is the color presenter before the difference, so "Show difference" off gives it back as it was.