The tyMeshToSplines modifier converts mesh edges into editable splines.
Linear/Smooth: the type of interpolation to apply to spline knots.
Steps: the number of interpolation steps to apply to splines.
Visible Edges: when enabled, visible mesh edges will be converted into splines.
Invisible Edges: when enabled, invisible mesh edges will be converted into splines.
Use edge selection: when enabled, only selected edges will be converted into splines.
Open edges only: when enabled, only open edges will be converted into splines.
Weld knots: when enabled, resulting spline knots will be welded together based on their proximity.
Threshold: the minimum distance between two knots in order for them to be canditates for welding.
Optimize splines: when enabled, resulting splines will be optimized based on the specified angle/distance thresholds.
Angle thresh: two spline segments whose angle are less than this value will have their shared knot removed.
Dist thresh: a knot whose distance to the next knot is below this threshold will be removed.