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From "Gilles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GEOMETRY-23) Remove Euclidean Point Classes
Date Sun, 21 Oct 2018 22:13:00 GMT

    [ https://issues.apache.org/jira/browse/GEOMETRY-23?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16658414#comment-16658414
] 

Gilles commented on GEOMETRY-23:
--------------------------------

{quote}It seems unnecessarily verbose and I don't think the method is ambiguous
{quote}
The point is rather that a symmetric API (i.e. {{ofCartesian}} and {{ofSpherical)}} does some
effort (IMHO worth the additional typing effort) of hiding the implementation, which makes
it closer to mathematical "purity" (a vector is a vector, independently of the system in which
its coordinates are expressed), from the caller's perspective.

> Remove Euclidean Point Classes
> ------------------------------
>
>                 Key: GEOMETRY-23
>                 URL: https://issues.apache.org/jira/browse/GEOMETRY-23
>             Project: Apache Commons Geometry
>          Issue Type: Improvement
>            Reporter: Matt Juntunen
>            Priority: Major
>              Labels: pull-request-available
>
> Based on discussion of the current Point/Vector API in GEOMETRY-14 and research into
other geometric libraries, I think we should remove the Euclidean Point?D classes and make
Vector?D also implement Point. This will end up being similar to the previous commons-math
design but avoids the issue raised in MATH-1284 since the Point and Vector interfaces are
not related. They just happen to be implemented by the same class, which we're calling Vector?D
since a vector can be used to indicate a point (by adding it to the origin).
> In the course of trying this out this design, I ended up removing 7 classes and simplifying
several methods. I think that's a good indicator that this is a good design choice.
>  
> Pull request: https://github.com/apache/commons-geometry/pull/15



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