Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 4 - Geometric Objects / Geometric Objects Reference

Geometric Objects Routines / Traversing Mesh Components, Vertices, Faces, and Edges

Q3Mesh_NextFaceEdge

You can use the Q3Mesh_NextFaceEdge function to get the next edge of a mesh face, in a counterclockwise order.

TQ3MeshEdge Q3Mesh_NextFaceEdge (TQ3MeshIterator *iterator);

iterator

A pointer to a mesh iterator structure.

DESCRIPTION

The Q3Mesh_NextFaceEdge function returns, as its function result, the next edge counterclockwise in the iteration specified by the iterator parameter, which must have been filled in by a previous call to Q3Mesh_FirstFaceEdge or Q3Mesh_NextFaceEdge. If there are no more edges, this function returns NULL. This function iterates over all the contours in the face.