BCF 2.1: Update xml schema for viewpoints

[jasollien]

No description provided.

[pbuts]

I think having a visibility for the set and for individual components is confusing (especially when the component visibility has a default value). It also adds data overhead.

We already need rules around the xml schema to inform implementers how to interpret and create the different sets, so we can easily make a statement that:

• the set defines the visibility
• components included in the set are the exceptions to the set's visibility
• components that are selected or colored are always visible

I also want to propose to specify the visibility as attribute of the sets (Components, Spaces, SpaceBoundaries, Openings), not as attributes of the unnamed sequence or complex type.

[jasollien]

1. The set defines visibility: (I guess that's what you are referring to in your last line as well) I agree.
2. Components included in the set are exceptions: I partly agree. However it is also possible to have components with the same visibility as the default in the set, if you want to export selection/coloring etc.
3. Components that are selected or colored are always visible: As we decided in Bratislava, If I remember correctly, It is allowed to export hidden, selected/colored objects, but it is considered bad practice.

We may talk more about this in todays hackathon :)