Mesh from DWG survey with lines as Z Values

[johanSR]

Hi all.

I am trying to create an automatic mesh from a DWG file.

The DWG have contour lines with Z Values to each node/point on the lines. Is there anyway to create a mesh from these files?

Operating system used: Windows 11

[Barry Kelly]

You need the X, Y & Z co-ordinates, which I believe you can get from the DWG file (not that I have tried, but I recall reading about it in another post).

You can then use the option to 'Place mesh from surveys data' to create a mesh from the text file containing the co-ordinates.

But the mesh will not automatically generate contour lines.

Barry.

[johanSR]

Hi Barry.
That's exactly what I'm looking for... How to create the .txt or .xyz files from the autocad file...

[johanSR]

There is a way to create points from lines in Autocad, but it's the same manual input you would need from Archicad...

You have to select each line seperately and do a point exercise. I couldn't find a way to select all the lines and create points on all at the same time.

[vistasp]

If you can make it into a dxf file first, this online converter should work (haven't tried it).

https://imagetostl.com/convert/file/dxf/to/xyz

Alternatively, there's also this app:

https://www.guthcad.com/dxf2xyz.htm

[Barry Kelly]

I thought there was some way to read the XYZ info from the DWG.

I could be wrong, it is not something I have ever had to do.

Barry.

[Lingwisyer]

Here is a thread regarding an Autolisp that converts lines to points, and here is one about xyz files.

[Barry Kelly]

If the DWG contains 3D information, it can be opened as an object ...

https://community.graphisoft.com/t5/Collaboration-with-other/dwg-to-3D-mesh/m-p/181484/highlight/tru...

I think this is the post I was thinking of where you can then open the script for that object and then extract the XYZ information.

As I said, I have never done this.

https://community.graphisoft.com/t5/Modeling/From-DWG-to-MESH-a-trick/m-p/167437?p=183356

Barry.