Linked Topography from civil 3D

Revit
1

Hi Everyone

do anyone know any node by which i can select linked civil 3d toposurface in my revit and convert to polysurface.

i am using revit 2019.

thanks in advance.

2

1- Select model element “to select the linked toposurface”.

2- Follow below pic.
image

3

Thanks for reply, but my toposurface is linked, i tried select model element already.

image
image.png1091×501 27.9 KB

4

Try using element. Geometry before topography. Mesh

5

Sorry, but a linked Civil 3d topo is a special element and its geometry can’t be extracted from the API as far as I know. Therefore not by Dynamo either.

2 Likes
6

Hi,

First I am a total Dynamo beginner.

I use the Revit INSERT, LINK TOPOGRAPHY command to link to a Civil 3D topography via ADC / BIM360. Then I use the script I leaned at my Dynamo class, it works fine with Revit topo:

screenshot1
screenshot1.png1452×719 194 KB

I receive the error message: Warning: Internal error, please report: Dereferencing a non-pointer.
Is it still not possible?

Peter

7

Topography Links can be extracted using Dynamo
The ‘trick’ is Topography Surfaces can be Selected using TAB cycling.

Using Select Model Element -
Rather selecting the TopographyLink (First Option), You can TAB Cycle in Revit to select the Model Element TopographySurface (Second Option)

image

1 Like
8

Yes, but you can’t extract the geometry for use in Dynamo to the extent of my knowledge. Am I wrong?

9

Yes, you are wrong.

`IList<ElementId> topo_ids = topograpyLink.InternalElement.GetDependentElements(new ElementClassFilter(typeof(TopographySurface)));`

Gives you all surfaces inside the linked surface