Detailed Description

Description:: This class describes a single edge of a mesh object that is adjacent to a vertex. This is an edge that is coming out of the vertex. This is used in adjacency lists.

Data Members:: DWORD f[2];

The indices into the meshes face table of the two faces that share this edge.

DWORD v[2];

The indices into the meshes vertex table of the two vertices of this edge.

#include <meshadj.h>

Inheritance diagram for MEdge:

Public Member Functions
DllExport int	EdgeIndex (Face *faces, int side)
DllExport BOOL	Selected (Face *faces, BitArray &esel)
DllExport BOOL	Visible (Face *faces)
DllExport BOOL	Hidden (Face *faces)
DllExport Point3	Center (Point3 *verts)
DllExport BOOL	AFaceSelected (BitArray &fsel)
DllExport Point3	ButterFlySubdivide (Mesh mesh, AdjFaceList af, float tens)
DllExport UVVert	ButterFlyMapSubdivide (Mesh mesh, AdjFaceList af, float tens, int mp, bool &seam, UVVert &side2)
DWORD	OtherVert (DWORD vv)
DWORD	OtherFace (DWORD ff)
Public Attributes
DWORD	f [2]
DWORD	v [2]

Member Function Documentation

Remarks:: Returns the index of the edge in the face on side side. So: given a Mesh mesh and an MEdge *me, int eid = me->EdgeIndex (mesh.faces, 0); then mesh.faces[me->f[0]].v[eid] and mesh.faces[me->f[0]].v[(eid+1)3] are the endpoints of the edge.

In particular, mesh.edgeSel[me->f[0]*3+eid] tells whether this edge is selected.

Parameters:: Face *faces

The list of faces from the mesh.

int side

Either 0 or 1, indicating whether we should find this result for the face on side 0 or on side 1.

Remarks:: Returns TRUE if this edge is selected on either side; or FALSE if it is not selected on either.

Parameters:: Face *faces

The list of faces from the mesh.

BitArray &esel

The edge selection BitArray from the mesh.

DllExport BOOL Visible ( Face * faces )

Remarks:: Returns TRUE if this edge is visible on either side; or FALSE if it is not visible on either.

DllExport BOOL Hidden ( Face * faces )

Remarks:: Returns TRUE if all the faces using this edge are hidden; otherwise FALSE.

DllExport Point3 Center ( Point3 * verts )

DllExport BOOL AFaceSelected ( BitArray & fsel )

Remarks:: Returns TRUE if one (or both) of the faces sharing the edge is selected; otherwise FALSE.

DllExport Point3 ButterFlySubdivide	(	Mesh *	mesh,
		AdjFaceList *	af,
		float	tens
	)

Parameters:: Mesh *mesh

A pointer to the associated mesh.

AdjFaceList *af

A pointer to the associated AdjFaceList.

float tens

The tension parameter, as seen in the Tessellate modifier.

DllExport UVVert ButterFlyMapSubdivide	(	Mesh *	mesh,
		AdjFaceList *	af,
		float	tens,
		int	mp,
		bool &	seam,
		UVVert &	side2
	)

Remarks:: This method creates a map vertex for the middle of this edge using the Butterfly tessellation scheme. Designed to create map vertices to go with the vertex created by ButterFlySubdivide().

Parameters:: Mesh *mesh

A pointer to the associated mesh.

AdjFaceList *af

A pointer to the associated AdjFaceList.

float tens

The tension parameter, as seen in the Tessellate modifier.

int mp

The map channel we want to get a result for.

bool & seam

If this is set to true by the algorithm, then there's a mapping seam on this edge, and different map vertices should be used on each side.

UVVert & side2

If there's a seam, this contains the mapping result for the second side. The return value matches the mapping scheme on face f[0]; side2 matches the scheme on face f[1].