I am often confused with these two things,and I would be appreciated that if anyone could make me have a deep understanding of them.

Moin,

have you read the documentation? It has an article about the question:
https://www.sidefx.com/docs/houdini/model/points.html [www.sidefx.com]

In short: Points are threedimensional positions. Vertices are references to “the corners of a polygon”. A quad (four-sided polygon) has four vertices, a neighboring quad has four different vertices, however, maybe the two quads share two points (the quads share one edge), then you only have six different points (in space), but eight vertices.

Other software doesn't distinguish between the two usecases by terminology but simply speaks of “point order within the polygon”. Houdini merely puts its own “name” to the point (index) inside a polygon as opposed to a position in space.


Marc

http://www.tokeru.com/cgwiki/index.php?title=Points_and_Verts_and_Prims [www.tokeru.com]