4 Q3Mesh_GetVertexIndex

You can use the Q3Mesh_GetVertexIndex function to get the index of a mesh vertex.

TQ3Status Q3Mesh_GetVertexIndex (
TQ3GeometryObject mesh, 
TQ3MeshVertex vertex, 
unsigned long *index);
mesh A mesh.
vertex A mesh vertex.
index On exit, the index of the specified mesh vertex.

DESCRIPTION


The Q3Mesh_GetVertexIndex function returns, in the index parameter, the index of the mesh vertex specified by the mesh and vertex parameters. A vertex index is a unique integer (between 0 and the total number of vertices in the mesh minus 1) associated with a vertex.

Vertex indices are volatile and can be changed by functions that alter the topology of a mesh (such as functions that add or delete faces or vertices), and by writing, picking, rendering, or duplicating a mesh, or by calling Q3Mesh_DelayUpdates. As a result, you should rely on an index returned by Q3Mesh_GetVertexIndex only until you perform one of these operations.<8batcolor>s

DESCRIPTION

3D Graphics Programming with QuickDraw 3D - 21 OCT 1995

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