Dynamo Topo / Top of Foundation Script

[Kieran_Atherton]

Hello, at the moment I am working with a sloped Topo and I have been asked to set the top of foundations -650mm from the top of Topo. Manually setting each column base level offset would be very time-consuming,

So my question is, is there a way that Dynamo can automate this process, the image below kind of makes more sense of what I am trying to achieve.

[Alisder_Brown]

@Kieran_Atherton Not sure if you just want to do it in Dynamo, but you dont need Dynamo for this.

Go to a 3D view and have only your Topo and Foundations visible > Select all your foundations > In the ribbon, select “Pick new Host” > Select the Topo as the new host > Set the offset in the Pile properties to whatever.

Hope this helps

[Kieran_Atherton]

Thank you for your reply Alisder, I tried that but the foundations are controlled by the columns so they wont move unless i change the column base offset

[Einar_Raknes]

Here is something to get you started @Kieran_Atherton:

To convert the topo to a dynamo surface I used the code from this post:

Topography import to Dynamo

You could convert a Revit topography to a polysurface with this… TopoSurfaces.dyn (4.0 KB) [image] iA=List.GetItemAtIndex(T.Mesh.VertexPositions,T.Mesh.FaceIndices.A); iB=List.GetItemAtIndex(T.Mesh.VertexPositions,T.Mesh.FaceIndices.B); iC=List.GetItemAtIndex(T.Mesh.VertexPositions,T.Mesh.FaceIndices.C); //Surfaces TopoSurf=Surface.ByPerimeterPoints(List.Transpose({iA,iB,iC})); //Polysurface combining Surfaces TopoPlySurf=PolySurface.ByJoinedSurfaces(TopoSurf);

[Andrew_Hannell]

@Kieran_Atherton
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[jostein_olsen]

In addition to all of the above: Instead of converting the topo to polysurface in designscript, download the springs package and try the Mesh.ToPolySurface node. It’s multithreaded and performs significantly better on larger /topos/meshes.

Z Coordinate from Topo

Converting the mesh to a Polysurface is the slowest step in the graph. You could try the “Mesh.ToPolySurface” node in spring nodes (version 100.0.1 + ). It’s multi-threaded and should perform the conversion noticeably faster. You’ll first need to extract the mesh from the topo with the “Topography.Mesh” node.

[Kieran_Atherton]

Thanks guys, Much appreciated, Il play around with your suggestions now.