ConeIndex -- optional argument: index of the cone center for star triangulations

Used by fineStarTriangulation and regularFineStarTriangulation to specify which column of the input matrix should serve as the cone center. If null (the default), the functions treat the cone center as a new point at index numColumns A; otherwise the value must be an integer in $0, \ldots, n$, where $n$ is the number of columns.

Functions with optional argument named ConeIndex:

• fineStarTriangulation(...,ConeIndex=>...) -- see fineStarTriangulation -- refine a triangulation to a fine star triangulation by coning over a center
• regularFineStarTriangulation(...,ConeIndex=>...) -- see regularFineStarTriangulation -- a regular fine star triangulation of a polytope's boundary