Re: ITP: opencascade -- Open CASCADE Technology is a suite for 3D surface and solid modeling
Hello Anton & Debian Science Team:
On Mon, 2017-11-27 at 19:36 +0100, Anton Gladky wrote:
> Hi,
>
> thanks for intending to package opencascade! I would though recommend
> not
> to have both versions (original and the fork) in Debian at the same
> time.
>
> If you have good reasons to bring back original version, please
> contact Debian
> Science Team, which is maintaining oce (and actually FreeCAD) at the
> moment.
> We will try to find a solution for that.
>
> Best regards
>
> Anton
>
There is certainly good reason to bring back OpenCASCADE (OCCT). As I
mentioned, development of OCE has stalled considerably. Take a look at
both the contribution graph and current release of OCE [1]. The
current OCE version, 0.18.2, released Aug 2017, is based upon OCCT
6.9.1 which was released 2015-09-28. You can also take a look at the
OCCT changelog for versions 7.0.0, 7.1.0, and 7.2.0 (which actually is
released, this is not totally up-to-date) [2]. There are 196 upstream
tickets closed between OCE and OCCT (whether bugs fixed or features
added.) There are at least 15 FreeCAD bugs resolved by OCCT > 7.
Since OpenCASCADE acts as FreeCAD's geometry/topology kernel, good
behavior and performance is tightly coupled to keeping it up-to-date,
and I believe not reintroducing OCCT would be considered a blocking
issue for the next and upcoming FreeCAD release, 0.17.
[1]. https://github.com/tpaviot/oce/graphs/contributors
[2]. https://tracker.dev.opencascade.org/changelog_page.php
>
> 2017-11-27 7:24 GMT+01:00 <kkremitzki@gmail.com>:
> > Package: wnpp
> > Severity: wishlist
> >
> > * Package name : opencascade
> > Version : 7.2.0
> > Upstream Author : Open CASCADE S.A.S.
> > * URL : https://www.opencascade.com/
> > * License : LGPL with exception
> > Programming Lang: C++
> > Description : Open CASCADE Technology is a suite for 3D
> > surface
> > and solid modeling
> >
> > Open CASCADE Technology is a suite for 3D surface and solid
> > modeling,
> > visualization, data exchange and rapid application development. It
> > is
> > an
> > excellent platform for development of numerical simulation software
> > including
> > CAD/CAM/CAE, AEC and GIS, as well as PDM applications.
> >
> > The `opencascade` package was previously included in Debian and
> > last
> > seen in 2011
> > according to http://snapshot.debian.org/package/opencascade/6.5.0.d
> > fsg-
> > 2/. It was
> > removed due to its "OCCT License" which was deemed incompatible.
> > However, this license
> > was changed in 2013 for versions 6.7.0+ to LGPL with an additional
> > exception, available
> > at https://www.opencascade.com/content/licensing.
> >
> > A community fork, OCE, was introduced, but development has stalled
> > on
> > the fork while
> > development on OCCT has accelerated, and so the FreeCAD project
> > which I
> > am a part of
> > has decided to move back to OCCT. Additionally, newer versions of
> > the
> > `netgen` package
> > depend on OCCT, and FreeCAD in turn depends on Netgen, so getting
> > OCCT
> > back in to Debian
> > would benefit the FreeCAD project significantly.
> >
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