buildingSMART / buildingSMART/IFC4.x-development

IfcCardinalPointReference example

Open
#1,165 5 comments 0 reactions 0 assignees View on GitHub
Dominant language
Python
Stars
234
Forks
123
Avg merge
15h 4m
Merged PRs (30d)
5

Description

Cardinal point usage example seems a bit confusing
https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCardinalPointReference.htm

Looks like the images
Figure 8.10.2.1.A use wrong hand coordinate systems ( x -> left )

and Figure 8.10.2.1.B is shown in very non ifc way. (usually profile at bottom and z up, then the left is left)

Of course the hole 'left' in element depends where you are looking from.

https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/annex_e/building-elements/beam-parametric-cross-section.html#Figure-E.B-Beam-profile-and-cardinal-point-usage

also here the profile left is right. So I assume this is by desing?

Contributor guide

Open the contributing guide

Research direction

Start with the IfcCardinalPointReference page and Figures 8.10.2.1.A and 8.10.2.1.B, then compare them with the linked Beam profile and cardinal point usage figure. Check the coordinate-system and viewing-direction conventions used by the IFC examples. Done means the intended convention is established and the confusing figure or explanatory text is corrected or clarified.

Written by the indexing model from the issue text.

Assessment

Domain
documentation
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.