Dropppping unmaintained code

[mosra]

Assuming nobody uses the following parts anymore, I propose deprecating and then dropping them:

• Shapes namespace. Poorly designed, sparsely implemented and of no real use. This would make Finish collision detection algorithms #5 and also the DebugTools::ShapeRenderer class obsolete. Affects the Bullet and Audio example, which would need to be reworked without these (shouldn't be hard, we could also make use of instancing there) -- deprecated in 8efc6b3
  • adapt the Bullet example -- mosra/magnum-examples@11f917f
  • adapt the Audio example -- mosra/magnum-examples@8a8b06e
  • deprecate BulletIntegration::convertShape() -- mosra/magnum-integration@968fa40
  • Drop everything -- aca02f5, mosra/magnum-integration@e2be55b
  • Remove @collisionoperator or whatever is it named from Doxyfile and Coding Style docs
• Platform::GlutApplication class. Is there any platform that has GLUT but doesn't have SDL2? The class is not receiving any updates anymore and I'm not sure if it even works. -- deprecated in d70f75a
  • Drop it (Removed glutapplication class and references #195)
• ColladaImporter plugin. Depends on outdated Qt4, supports only some features because COLLADA files are impossible to parse and I don't plan to extend it anymore. I propose replacing it with general-purpose importer based on Assimp (Data import/export plugin improvements #146) -- deprecated in mosra/magnum-plugins@35ee1a2
  • Drop it -- mosra/magnum-plugins@ced67fc
• The compatibility branch, along with support for GCC 4.4, 4.5, 4.6 and MSVC 2013.

[wivlaro]

I still use collada importer. But can probably move to opengex at some point. I think assimp is quite good iirc, only concern would be it being a bit lowest-common-feature set.

[Squareys]

Affects bullet example, which would need to be reworked

And audio example, too ;) But replacing by mesh primitives should be fine there too.

And I believe the "WIP" Octree implementation uses it, but that's my responsibility to deal with.

[mosra]

New item added: completely dropping the compatibility branch, along with support for GCC 4.4, 4.5, 4.6 and MSVC 2013. The branch wasn't updated since October last year so I don't expect anyone to still depend on it. For me it's real maintenance nightmare.

The last reason why I wanted to keep it was Windows Phone SDK that still depends on MSVC 2013, but since that platform is also almost dead, the pain-to-portability ratio is too high.

Please raise objections if you have a different opinion.

[manuel-kroeter]

We might need some line - sphere/box collision detection for selecting objects but we could also implement it ourselves. As I have seen so far, the shapes are currently implemented for floats only anyway.

[mosra]

@ManuelK89 The actual "brain" of the Shapes namespace is in Math::Geometry, where all most of the intersection/distance algorithms are implemented -- e.g. line/sphere intersection is just a call to Math::Geometry::Distance::linePointSquared()

[mosra]

The compatibility branch is now removed along with all documentation references to it. If you happen to still find any reference to it, please tell me.

[mosra]

GlutApplication is deprecated since d70f75a.

[mosra]

Shapes namespace and DebugTools::ShapeRenderer is deprecated since 8efc6b3.

[mosra]

ColladaImporter is deprecated in mosra/magnum-plugins@35ee1a2, BulletIntegration::convertShape() in mosra/magnum-integration@968fa40. That wraps up the deprecation round for 2018.0c, removal is postponed to at least 6 months later.

[mosra]

Everything is removed now:

• Shapes in aca02f5 and mosra/magnum-integration@e2be55b
• GlutApplication in 035f644
• ColladaImporter in mosra/magnum-plugins@ced67fc

Together with #81 it totalled in around 18k lines removed. Not bad 🔥 🔥 🔥