- First, a new plugin is created, with a
UMLDiagram3DPluginactivator, which is not really needed.
- A new editor class
UMLDiagramEditor3Dsubclasses the original
UMLDiagramEditor. Instead of a 2D viewer we have to instantiate a 3D viewer, actually, this need the most code since we have to copy and paste some code from the base classes.
- Only one editpart and figure have to be exchanged, that is the pair for the diagram, here the package. We have to provide new 3D versions for these two classes (
- The new edit part has to be created by a new factory
UMLEditPartFactory3D, which subclasses the original
- This factory has to be injected into the editor somehow. This is done using a GMF provider
UMLEditPartProvider3D. Since we only need this provider for our 3D editor, we have added a very dirty hack to identify which editor calls the provider. This is hack is really dirty (better not look at the provider ;-) ), and I hope to find a better solution.
- Finally we have to exchange the policy which creates the 2D feedback handles and replace it with a 3D version. Again, this is done by a provider called
UMLEditPolicyProvider3D, the 3D policy is called
The 3D version of the UML Tool's activity diagram editor (on the right hand side, 2D version on the left). Note the 3D handles and the transparent feedback figure!Unfortunately there are some open issues which restrict the 3D editor: no edges can be drawn (sometimes, you can draw edges but don't see any feedback, sometimes the Eclipse IDE crashes when you try to do that). You cannot open more then one 3D editor at a time, we have a problem with the texture manager. And there are some other bugs... So many bugs? Yes, but only a very few lines of code to 3d-fy an editor. So, 3D-fy your editor and help us fixing the bugs! You may ask, huh, that's great, but why should I want to 3d-fy my editor? Well, I can think of many use cases: display multiple diagrams within one 3D scene and draw inter-diagram connections, annotate your diagrams with 3D elements (e.g. metrics drawn as 3D bars on top of classes), exchange some of your 2D figures and provide real 3D editors...