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ajandClaude Opus 5.5
1bd0b258af
A library drawing can say how individual contours must be cut. A `ContourCutPin` holds the entry point in the drawing's source frame plus the lead-in, lead-out and optional tab used there; `Drawing.CutPins` lists them. Nothing plans with pins yet (Slice 5). - Pins accept only the exact built-in lead and tab types, copied through the same owned copiers the planner uses, so a pin cannot carry a type the emitter would not certify. Properties return copies: the pin is immutable. - A tab requires no lead-out, because the planner refuses a lead-out after an open contour. - The source frame is the frame of the source entities. It does not move when BuildDrawing re-origins the program at its first rapid, so pins survive converter edits that change Source.Offset. `CutPinResolver` maps pins to (contour ordinal, entity ordinal, local point) for a placement rotation, using the same `PreparedContours` ordinals Plan Cutting will use. It never guesses: a pin must lie within the contour closure tolerance of exactly one contour that no other pin claims, otherwise it is reported unresolved with a typed reason. A drawing program rotated in place (a canonical copy) is not the source frame and resolves nothing; canonical copies and split pieces carry no pins. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>