Ideas on how to append attributes to object?

john wick's picture
john wick
Mon, 04/18/2022 - 09:38
Forums: 
Data Exchange and Application Framework

how to append like OCAF or other OCC data scheme or something to maybe a AIS shape or TF Shape?
I would like to append attributes to object so that individual shapes would have attributes like object type, fill, color, material etc.

Mikhail MPV's picture
Mikhail MPV
Mon, 04/18/2022 - 10:41

  Dear John,

Normally the reverse dependency is implemented. In OCAF all the visualization attributes are stored to support save/open or undo/redo for displayed shapes too. Please, take a look at TPrsStd_AISPresentation class and the whole TPrsStd package created for this.

Regards,

Mikhail.

 

john wick's picture
john wick
Mon, 04/18/2022 - 14:45

thanks for pointing the way, appreciate it. One more question to bother you about. Do you have a example on this that I could look at?

Mikhail MPV's picture
Mikhail MPV
Mon, 04/18/2022 - 15:35

You can consider some samples provided with OCCT sources:

  • samples/ocafsamples/TPrsStd_Sample.cxx  - just a piece of example code
  • samples/OCCTOverview - a simple application based on OCAF features