Polygon collections are very often generated as sets of shapes that share boundaries. Rather than digitizing new polygons and using snapping to create a duplicate bounding, a “build polygon” tool allows users to add new polygons on to the sides of existing polygons
The tool will allow a user to create a new polygon by drawing a line that starts and ends in existing polygons. The tool will extract the appropriate edges from the existing lines and join them to the drawn line to create a new polygon boundary.
Tasks:
- Create the computational geometry routines to extract the appropriate boundaries from existing polygons.
- Hook the routines up to an interactive tool, with appropriate feedback for error conditions (unclosed areas).
Funding
This roadmap item is currently unfunded.
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Other Roadmap Items
Polygon collections are very often generated as sets of shapes that share boundaries. Rather than digitizing new polygons and using snapping to create a duplicate bounding, a “build polygon” tool allows users to add new polygons on to the sides of existing polygons.
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