G3D::MeshAlg::Edge Class Reference

Oriented, indexed edge. More...

Public Member Functions
	Edge ()
bool	boundary () const
	Returns true if either faceIndex is NONE. More...
bool	containsVertex (int v) const
bool	inFace (int f) const
	Returns true if f is contained in the faceIndex array in either slot. More...
int	nextEdgeIndexInFace (const Array< Edge > &edgeArray, const Array< Face > &faceArray) const
	Returns the index into the edgeArray of the next Edge along the winding direction of the Face containing this. More...
bool	operator!= (const Edge &other) const
bool	operator== (const Edge &other) const
Edge	reverse () const
	Returns the reversed edge. More...
int	twinIndex (const Array< Edge > &edgeArray, const Array< Face > &faceArray) const
	Returns the index in edgeArray of the reverse directed Edge in the adjacent Face. More...

Public Attributes
int	faceIndex [2]
	The edge is directed forward in face 0 backward in face 1. More...
int	vertexIndex [2]
	Degenerate edges may include the same vertex times. More...

Detailed Description

Oriented, indexed edge.

Constructor & Destructor Documentation

Edge()

G3D::MeshAlg::Edge::Edge

(

)

Member Function Documentation

boundary()

bool G3D::MeshAlg::Edge::boundary ( ) const

inline

Returns true if either faceIndex is NONE.

containsVertex()

bool G3D::MeshAlg::Edge::containsVertex ( int  v ) const

inline

inFace()

bool G3D::MeshAlg::Edge::inFace ( int  f ) const

inline

Returns true if f is contained in the faceIndex array in either slot.

To see if it is forward in that face, just check edge.faceIndex[0] == f.

nextEdgeIndexInFace()

int G3D::MeshAlg::Edge::nextEdgeIndexInFace	(	const Array< Edge > &	edgeArray,
		const Array< Face > &	faceArray
	)		const

Returns the index into the edgeArray of the next Edge along the winding direction of the Face containing this.

Returns -1 if the data structure is inconsistent and this edge is not found in its containing face.

operator!=()

bool G3D::MeshAlg::Edge::operator!= ( const Edge &  other ) const

inline

operator==()

bool G3D::MeshAlg::Edge::operator== ( const Edge &  other ) const

inline

reverse()

Edge G3D::MeshAlg::Edge::reverse ( ) const

inline

Returns the reversed edge.

twinIndex()

int G3D::MeshAlg::Edge::twinIndex	(	const Array< Edge > &	edgeArray,
		const Array< Face > &	faceArray
	)		const

Returns the index in edgeArray of the reverse directed Edge in the adjacent Face.

At a mesh boundary, returns -1. For a nonmanifold or degenerate mesh Face, returns one of the multiple twins.

Member Data Documentation

faceIndex

int G3D::MeshAlg::Edge::faceIndex[2]

The edge is directed forward in face 0 backward in face 1.

Face index of MeshAlg::Face::NONE indicates a boundary (a.k.a. crack, broken) edge.

Referenced by boundary(), inFace(), operator==(), and reverse().

vertexIndex

int G3D::MeshAlg::Edge::vertexIndex[2]

Degenerate edges may include the same vertex times.

Referenced by containsVertex(), operator==(), and reverse().