Because drawings supplied by most manufactures and surveyors depict curves using hundreds of short line segments, we need a way to convert these back into simple curved line segments for much easier & cleaner manipulation / translation
To this end, we need a curve-fitting algorithm that can detect and convert line segments back into original circles & ellipses wherever applicable, or otherwise to polylines with user defined-segmentation/resolution (essential for managing mesh contour complexity), or to smooth splines
Small gaps between line segments (e.g. from export translation rounding errors) that would prevent successful space clicking of lines (for area fills etc) should be detected and filled by extending curved or straight-line segments, depending on the best fit
For example, manufacturers imported detailed window profiles currently often cannot be space-clicked successfully due to tiny misalignments between imported line segments. Space clicking is needed if you want to replace lines with fills. And segmentation removal is necessary to find the origins of imported circles - etc
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