Struct HalfEdgeGeometry

pub struct HalfEdgeGeometry {
    pub path: SurfacePath,
}

The geometry of a half-edge

Fields

path: SurfacePath

The path of the half-edge

Implementation Note

Currently, all curve-related geometry is defined locally, in terms of the surface that the curve is on (or purely in 2D, if there is no surface associated with this geometry). However, curves exist globally, independently of surfaces. Half-edges in multiple surfaces can refer to the same curve, and in fact, that is the whole reason for their existence as a topological object.

This contradiction, globally defined curves but locally defined curve geometry, is the reason that this curve geometry is defined right here, associated with a locally existing half-edge. (And, I might add, redundantly so, as multiple half-edges within the same surface context can refer to the same curve.)

Instead, it should be possible to define curve geometry either locally or globally. Then that respective definition can be associated with the curve (and possibly, in addition, a surface). How exactly that is going to work is up in the air.

The point of all this exposition is to clarify that this field doesn’t really belong here. It exists here for practical reasons that are, hopefully, temporary.

Trait Implementations

impl Clone for HalfEdgeGeometry

fn clone(&self) -> HalfEdgeGeometry

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for HalfEdgeGeometry