Struggling to make openings in OBD Roofs (Morph Forms).
1. Construct Opening does not work on Roof objects. I would have thought that the CO tool would work on all Forms. It starts to work, accepting the Roof as input but fails without any proper notification :-(
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2. Subtract Solids (Building Design > Modify or Modeling > Modify Forms) seems to call the legacy Subtract Solids tool. The newer Modeling > Solids > Modify Features > Substract Solids tool does not recognise the Roof Forms at all. Again, the legacy tool starts to work on both Roof Forms but fails without any proper notification :-(
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3. The Trim Roof tool seems to work best. The niggle here is that the Roof Form used to cut the opening will need to be manually hidden (different level, construction class or in a separate Ref attachment?). The other bigger niggle is that there is no associativity between them. Any changes will require using the Right-click Building Element Info tool to access and delete the Subtraction features before re-do the Subtraction. The Outline of the Subtraction is not accessible for manipulation like Slabs or Walls.
Image may be NSFW.
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Image may be NSFW.
Clik here to view.
