Changes from version 1.1 to 1.2

Compatibility

Version 1.2 is completely compatible with version 1.1.

Changed functions

POLYHEDRON[minkowskisum] now uses the Cayley trick and is much faster than before.
PCOMPLEX[homology] and FAN[homology] now also compute homology with coefficients in a prime field.

New functions

POLYHEDRON[barycenter] computes the barycentre of a non-empty polytope.

Changes from version 1.0 to 1.1

The following list does not describe internal changes invisible to the user. Those can be found in the Changelog file of the source distribution.

Compatibility

This version is almost completely compatible with version 1.0. The only exception is that objects of type FAN or PCOMPLEX saved to a Maple ".m" file with version 1.0 cannot be used any more (see below).

Changed types

ray, line: These types are now implemented as functions which do argument checking and then return unevaluated. Moreover, the argument is normalized.
FAN, PCOMPLEX: These types now store less information than before (which implies that they are created faster). As the consequence, they are displayed differently. This has no influence on the usage of these types. Only exception: an object of type FAN or PCOMPLEX saved to a Maple ".m" file with a previous version cannot be used with this version of Convex.

Changed functions

CONE[faces] and POLYHEDRON[faces] now return an Array, not an array. The possibility of this change was announced in version 1.0.
linearhull now accepts arguments of type ray as well.