how to get contour lines from toposolid

[NZhouSNYLF]

toposolid had a very big issue (at least for us) -> no contour lines displayed when "Modify Sub Elements", try to find solution or workaround, is API doable?

[jeremy_tammik]

I would assume that the contour lines can be accessed via view-specific geometry. Enter a view displaying them and use RevitLookup or some other database exploration tool to retrieve the toposolid view-specific element geometry. See if you can find the lines in there somewhere. If so, you should be able to copy their curve geometry and generate model curves from that.

[NZhouSNYLF]

thanks Jeremy, i tried RevitLookup to search contour lines for both (new) Toposolid and (old) Topography but in vain, maybe i missed something simple?

[jeremy_tammik]

IncludeNonVisibleObjects?

• https://thebuildingcoder.typepad.com/blog/2010/05/curtain-wall-geometry.html

[NZhouSNYLF]

so i can only access those contour lines via geometry instead of native Revit stuff? i'll give it a try, thanks Jeremy

edit: RevitLookup can find contour lines via GeometryElement

[NZhouSNYLF]

hi Jeremy, i did a quick test, seems curtain wall works OK but toposolid doesn't, strangely RevitLookup looks OK but coding only list ONE solid

[jeremy_tammik · Accepted solution]

RevitLookup IS coding, exactly the same as yours, unless you missed something. Compare more carefully, spot the difference, and you will see how to achieve the same.

[NZhouSNYLF]

thanks Jeremy, i did test for both Toposolid and TopographySurface

. RevitLookup can display contour lines info so it's doable as you mentioned early

. same coding approach works for TopographySurface but not for Toposolid

edit: need to add options.View = doc.ActiveView;

[jeremy_tammik]

Great! Congratulations on solving it and thank you for the confirmation. Can you add a little bit more detail on your exact solution, maybe adding a small code snippet demonstrating the crucial points? Thank you!

[NZhouSNYLF]

thanks Jeremy, works OK now after adding "options.View = doc.ActiveView;"