Working with vertices

There are a number of functions for accessing the vertices and their properties:

• The getNumVertices() function returns the number of vertices.

• The getVertex( i ) function returns the position of the vertex with index i.

• The setVertex( i, p ) function sets the position of vertex i to p. Note that this function can change the vertex but it cannot add a new vertex. So if i is greater or equal to mesh.getNumVertices(), you need to add a vertex (or vertices) using the mesh.addVertex( p ) function as described in the Using ofMesh section.

• The removeVertex( i ) function deletes the vertex with index i. Be very careful when using this function; after deleting a vertex, you should probably also delete the corresponding normal, color, and texture coordinate, and change the indices of the triangles to keep its coherence.

• The clearVertices() function deletes all the vertices. See corresponding cautions for removeVertex().

• The clear() function clears the mesh, including its vertices,...