Convert Quasi-Arcs

Detects polyline segments that approximate circular arcs and replaces them with true arc primitives.

When to Use

• After importing from formats that represent arcs as line segments
• To reduce vertex count while preserving curve fidelity
• Before exporting to formats with native arc support (DXF)

Options

Option	Description	Default
Tolerance	Maximum deviation from a perfect arc	1%
Minimum segments	Minimum consecutive line segments to consider	4
Selected layers only	Apply to selected layers instead of all	Off

How It Works

1. Scans polylines for consecutive segments that lie on a circular arc
2. Replaces qualifying segment runs with arc primitives
3. Non-qualifying segments are preserved as-is

Technical Notes

• Works on polyline segments within a polygon, not just standalone arcs
• Combine with Convert Quasi-Circles for comprehensive curve recovery
• Arc detection is more computationally expensive than circle detection