Struct tg_ring 

pub struct tg_ring { /* private fields */ }

A ring is series of tg_segment which creates a shape that does not self-intersect and is fully closed, where the start and end points are the exact same value.

Creating

To create a new ring use the tg_ring_new() function.

struct tg_ring *ring = tg_ring_new(points, npoints);

Upcasting

A tg_ring can always be safely upcasted to a tg_poly or tg_geom; allowing it to use any tg_poly_*() or tg_geom_*() function.

struct tg_poly *poly = (struct tg_poly*)ring; // Cast to a tg_poly
struct tg_geom *geom = (struct tg_geom*)ring; // Cast to a tg_geom

• See RingFuncs
• See PolyFuncs