[pfsteve]

An audit of the Modeling tools found places where the tools did something different from what their help, status text or bar controls promised. This fixes them.

Selection and the Eraser

• Alt/Option: no longer acts as Ctrl in Select, Lasso and the Eraser. Only Ctrl (Cmd on macOS) adds to the selection or softens edges.
• Esc during a drag: Esc during a selection box, lasso outline or eraser stroke, then releasing, no longer selects, adds a point or erases. When Select was chosen during another tool's operation, the first Esc ends the drag and the second returns to that tool.
• Guides: the Eraser erases guides in the open context, in the same undo step as the rest of the stroke.

Move, Rotate, Scale and placement

• Guides and text: Move, Rotate and Scale now take guides and leader/model text, with copies when Copy is on.
  • Screen text stays put.
  • Edges drawn on a face stay in place in a mixed selection.
  • A selection of only those edges is refused with a message instead of failing the whole move.
  • The moving outline shows guides and text.
• Autofold: Move's toggle is removed. It had no effect, because the model always folds faces as needed.
• Orbit: Shift-drag pans, as its status text said. The help also lists Ctrl for free orbit.
• Place Component: inside a rotated group, the preview now matches where the component lands.

Drawing

• Active tag: Circle, Polygon, the arc tools, Pie and Freehand now put their edges on the active tag. Faces formed by any drawing tool do too, and changing a curve's segments or radius keeps its tags.
• Rectangle: a typed width and height, and a re-edit, keep the side the pointer is on.
• Arc tools: they show the "type 12s" hint before the first click, and their fields are labelled Segments. The last field of 3 Point Arc is labelled Length, because it sets a distance.
• Polygon: Circumscribed resets when the tool is chosen. Toggling it while the bar shows the polygon just drawn redoes that polygon, and a Sides change keeps its mode.
• Offset: a typed re-edit that fails keeps the original offset, and the hint describes which side a typed value goes.

Other tools

• Solid Tools: an Intersect, Subtract or Trim that would leave nothing is refused with a message, and the model is unchanged. Messages no longer show internal ids, and refusals from the context menu reach the status bar.
• Resize Model: now also scales imported mesh parts and placed lights.
• Position Texture: shows Done, Reset, Flip and Rotate in the tool options bar.
• Tape Measure and Protractor: go back to their default modes each time they're chosen.

Behavior change for the AI model API

A subtract where one cutter would swallow one of several pieces is now refused. It used to delete that piece silently.

Testing

Typecheck, lint, the SPDX and license checks, and the full suite pass (4,558 tests). Each fix has new tests, and the tests that were checked fail without their fix. User help in docs/help/modeling/ is updated, and every section stays within the AI Help chunk size. Not yet checked by hand in the running app.

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