packet (angle structure list)

Description

In Regina 6.0.1 and earlier, the packet element was used to store every packet in the entire packet tree that makes up a Regina data file. This page describes how the packet element was structured when storing an angle structure list. Since Regina 7.0, each packet type has its own XML element; in particular, angle structure lists are now stored using the angles element.

An angle structure list packet stores a list of angle structures on a particular 3-manifold triangulation. Generally this list will contain the vertex structures whose convex span is the set of all angle structures on the triangulation.

The parent element of this angle structure list must be the triangulation on which the angle structures lie. The individual angle structures in this list are contained in the child struct elements.

The parameters of the angle structure enumeration that created this list are stored in the child angleparams element. Regina versions 4.6 and earlier did not write this angleparams element (since there were no parameters to select). If the angleparams element is missing then all parameters are assumed to take on their default values as described in the angleparams documentation.

The roles played by the child tag and packet elements are described in the general packet element documentation.