Module arrow 

Arrowheads for segment/curve/path/line, modelled on R grid’s arrow().

Arrow only describes where and how a head should be drawn; the geometry is computed in pixel space from an already-projected polyline by [heads], and drawn by [draw_heads]. Geoms call these two functions — see geom::segment/geom::curve/geom::path/geom::line (B1-3).

Structs

Arrow

Describes an arrowhead to draw at the end(s) of a line-like geom, following R grid’s arrow(). position and length_per_linewidth are ggplot-rs extensions, not part of grid’s API.

Enums

ArrowEnds

Which end(s) of a path get an arrowhead.

ArrowType

Arrowhead shape.

Functions

arrow

Build an Arrow with the default settings (open, 30° half-angle, 18px wings, a head at the end): arrow(), or arrow().closed().angle(20.0) for a filled, narrower head.