PlateEdits ports the WinForms plate view's edits of the selection, with
its undo labels and coalescing: Delete (parts and cut-offs, cut-offs
regenerated once when the plate has any), Nudge by the offset increment
or one repeat step, Push to contact, Rotate about the selection's
centre keeping its lower-left corner (a quarter turn, or by wheel
notches at 10 degrees or a tenth of that), repeated nudges and wheel
turns undoing as one step.
The Select tool drags the selection as one Move step. Cut-offs
regenerate when a drag actually moved parts (WinForms also does it on a
plain click, adding an extra undo step); the regeneration runs before
the step completes, so a failure rolls the drag back, and a view that
loses the pointer mid-drag ends the move as a release would, keeping
the selection.
A plate tool host now has to supply its undo wiring, the nest's cut-off
settings and an edits lock (WinForms EditsLocked): while locked no edit
runs and no press selects or starts a move.
PlateToolManager keeps one active tool with the WinForms action rules
(Escape cancels, then returns to Select, then resumes the ended tool) and
status text. SelectTool selects by click, Ctrl+click and window
(contains/intersect), takes common-line groups together and picks
cut-offs by their strokes. PlateHitTester hit-tests the shared display
geometry; PlateSelection reads and sets by part index.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
aj
