A clear separation between Point and Vector makes perfectly sense.
Ideally, Point should be deprecated then. Otherwise it is a complexity
growth.
Hilaire
Le 26/10/2017 à 11:39, Tudor Girba a écrit :
To make the conversation more interesting, in Bloc we also have BlPoint with
subclasses for 2D, 3D and 4D. The reason for this is that we model explicitly
the intention of usage even if they share the instance variable names. We did
not use Point because we needed 3D and 4D as well and Point has too many
meanings that are conflated into one.
This pattern was used everywhere we could. For example, we have BlBounds
instead of Rectangle (actually, this is also because of performance reasons of
working directly with 4 numbers rather than 2 points).
Of course, these come with an apparent extra maintenance cost. So, if we see a
possibility of unifying we should definitely take it, and this is where
external reviewers can help to point out possibilities. We should just not
unify just for the sake of it.
--
Dr. Geo
http://drgeo.eu
