Project seeds into drawing lines against plane.
seeds
plane
Segments whose 2D projection collapses to a point (an edge parallel to the view direction) are dropped: they carry no information on the page and would only add zero-length strokes for the line merger and the PDF writer to trip over.
Project
seedsinto drawing lines againstplane.Segments whose 2D projection collapses to a point (an edge parallel to the view direction) are dropped: they carry no information on the page and would only add zero-length strokes for the line merger and the PDF writer to trip over.