SetGeometry

DESCRIPTION

-Sets the custom vertex list to mesh. This is used to create a custom mesh.

VB.NET	SetGeometry(vVerticesArray As TV_SVERTEX() , iNumVertices As Integer , pIndicesArray() As Integer , iNumFaces As Integer , iNumGroups As Integer , iFaceGroupArray() As Integer , bOptimizeMesh As Boolean)
C++	void SetGeometry(cTV_SVERTEX vVerticesArray , etc)

NAME	OPTIONAL	DESCRIPTION
vVerticesArray	No	The 1-dimensional array of TV_SVERTEX
iNumVertices	No	Number of vertices.
pIndicesArray	No	The indices array is a pointer for every 3 positions in the array to the vertex that makes up a triangle. Size should always be iNumFaces * 3. See example for more.
iNumFaces	No	Number of triangles that make up the mesh.
iNumGroups	Yes	iNumGroups description
iFaceGroupArray	Yes	iFaceGroupArray description
bOptimizeMesh	Yes	bOptimizeMesh description

Null	Does not return a value.

Example	Example of creating a rectangle with 4 vertices.

Indices need to be created by connecting vertices clockwise. Otherwise they will be facing in the opposite direction.
If you have the same number of vertices and indices (ie every indice(n) = n) you will have created an unwelded mesh with too many unused vertices.
http://www.truevision3d.com/forums/tv3d_sdk_65/bye_bye_addvertex_hello_setgeometry-t9227.0.html