Comments (8)
Agree on all your points!
from bcf-xml.
I think we should clarify on issues if we are talking about the BCF 2.0 format as such or about the BCF 2.0 API. While the comments here seems to be about the BCF 2.0 file format there are also references to the BCF "hub" that might imply that this remarks are about BCF in the shape of an API. We cannot remove bits from the file format that preserves history because the API can preserve the history in another way. The BCF file format and the BCF API are two different things.
from bcf-xml.
Everything I wrote above was about recommended use of BCF 1.0 and 2.0 formats.
from bcf-xml.
I would suggest that for the third point we could agree that if the viewpoint only lists hidden components, then all the rest would be visible except the hidden components (the Visible flag is false). For example, it is often good not to show spaces. This way the smaller set of components (visible or invisible) could be exported to BCF.
from bcf-xml.
I agree, but then we need to recommend to use that with care: when listing only hidden components you cannot know anymore if the Zoom-To shows all involved items if the model has been changed. When listing visible components the software can check if they are still available.
The definition will then become:
- By default NOT listed components are hidden
UNLESS: there are NO components listed as visible,
THEN all components except the ones listed as hidden are visible - By default NOT listed components are NOT selected
And the advised/best working practice to limit size of viewpoints:
- either list a few involved components as “selected=true" but show whole model (no components listed as visible) and perhaps use clipping planes
- or list a few involved components as “visible=true"
- or list no components as visible meaning whole model is visible except components listed as hidden
The software creating viewpoints should work in a way that viewpoints remain small, to limit BCF file size and improve performance when working with a hub.
from bcf-xml.
Agreed in telecon 2014-07-17 that I will update the documentation.
from bcf-xml.
Here's the first version of the agreements: https://github.com/pasi-paasiala/BCF/tree/master/Documentation. It is still in the fork and not merged.
from bcf-xml.
These are done here:cf242b0#diff-fc5059085a6bb53d00544fb7da80db2f
from bcf-xml.
Related Issues (20)
- Extract IfcGuid to shared-types.xsd HOT 1
- Remove VisibleComponentsUseCases.md HOT 2
- ReferenceSchema is mentioned as "optional" in documentation, but is mandatory in XSD HOT 1
- BCF v3 Project optionality is different between docs and schema
- File attribute optionality HOT 1
- Deleted
- Field of view documentation HOT 1
- BCF-XML validator HOT 4
- DueTime interpretation ill defined HOT 5
- Remove outdated section about one-to-many relations between viewpoints and comments HOT 1
- Missing Topic Label HOT 3
- Update README to include contact details for the cde group HOT 1
- Tools that support bcf 3.0 HOT 1
- CameraViewPoint units HOT 2
- What is the "ExtensionSchema" in BCF 2.0/2.1? HOT 2
- Topic GUID mismatch HOT 4
- Is multiple topics in BCF markup supported? HOT 2
- proposal: adding "GeoPoint" HOT 2
- (Question) - Why are viewpoints stored in the topic folders? HOT 2
- How to save the GUID of an IfcElementType in a bcf file HOT 1
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