Yes, I was thinking you could triangulate the sphere at discreet shells. I have done 2D symmetric polygons where you needed to uniquely index into a 1D array o

Yes, I was thinking you could triangulate the sphere at discreet shells. I have done 2D symmetric polygons where you needed to uniquely index into a 1D array of vertex values. Ie, based on the magnitude you can estimate which shell. By knowing the shell, you know the number of vertices for the shell, by knowing both you can map it to a specific vertex, as you can define a priori the absolute traversal order. I have no idea if the 2D case extends to higher dimensions.