class MeshVertex;
class MeshFace;
class HalfEdge;

struct MeshVertex
{
    glm::vec3 position, normal;
    HalfEdge *edge;
};

struct MeshFace
{
    HalfEdge *edge; // one of the half-edges bordering the face
};

struct HalfEdge
{
    HalfEdge *oppositeHalfEdge;
    HalfEdge *nextHalfEdge;
    Vertex *vertex;
    Face *face;
};

class MeshHE
{

};