Get the Geometry (Curves especially) which cut by Section View

[zefreestijl]

Hi everyone, I've referenced this post to select elements cut

by the section view and then changed their graphic styles,

https://forums.autodesk.com/t5/revit-api-forum/select-elements-witch-cut-by-the-view/td-p/6793155

but this method only get the whole elements,

is it possible to get the resulting outline

(as the example in below image: the girders)

so that I can use the CurveLoop to create customized Filled Pattern later?

or how get I make the ViewSection's plane to intersect the elements I choose to get the curves?

Thanks in advance.

[jeremy_tammik · Accepted solution]

Here are some articles on setting up section views:

https://thebuildingcoder.typepad.com/blog/about-the-author.html#5.38

If you retrieve the geometry specific to a section view, it should include the subelements generated by the section view cut plane. If you identify all the geometry fragments that lie in the cut plane itself, that ought to return the curves you seek.

[zefreestijl]

Hi Jeremy, thanks for your reply,

I've tried to use all the dependent elements of Section View but none of them could cut the Framing Elements...

though I couldn't get anything related to Geometry Cut topic in the link,

at least I found that SectionView's cropbox boundary helps me create a temporary  wall to cut the Structural Framing...

Now I finally got the Section Cut CurveLoop I want..

(I'm still wondering how Revit works to create the cutting edges for the Elevation tags, Dimensions, Filled Patterns...etc.)

Thanks for your help anyway :]