Re: [Closed REQ 5042]: regarding the index of vertex and face

["Stuart Levy" <slevy>]

>... To display the 3D object, I transfer by 3D data into OFF files.
> I have a question regarding the index of vertex and face in Geomview.
> According to the manual, I can get index( serial number ) of vertex and face
> by using "pick" function.
> Question is how does Geomview assign indices to the vertices and faces.

Hi -- I'm sorry we didn't respond earlier, but NeXT mail is rather awkward
for us to read.

Anyway, the answer is very simple.  Vertex indices from a "pick" message
on an OFF primitive are exactly the same as the vertex indices you use
in describing the faces in the OFF object: they're integers from 0 to
<number of vertices in the OFF object> - 1.  Likewise, faces are numbered
in the order they appear in the OFF file, in the range from 0 to
<number of faces in the OFF object> - 1.

   Stuart Levy