Not sure if there is a simple answer to this, I've got a topographical survey (see below) with various spot levels and I would like to make a surface where the path/kerb lines are correctly interpolated between spot levels whilst still being correct in plan. I can obviously extract the edges and make into a complex chain/shape but unsure if this can draped to correct levels at each point. Is there a simple solution to this? I'm not after a triangulated mesh, just something clean which I can then generate a 2D elevation using export visible edges.
It's not exactly clear what it is that you're trying to achieve here. I assume the points in this design file that have the spot value next to them are what you want to use to create some sort of 3D terrain or surface. If they are on a separate level you could probably turn off everything else and export these point using something like XYZ Text tools.
XYZ Text Toolbox > Export Coordinates
Once you have properly created the X, Y and Z coordinates for these points in a spreadsheet they can then be imported into a 3D design file as true XYZ points.
You might also like to look at the various Civil Design software packages that Bentley produces that might be able to assist.
https://www.bentley.com/en/products/product-line/civil-design-software
The ability to create a Terrain Model in MicroStation CONNECT Edition is available but relies on the use of LandXML data.
Terrain Model Toolbox > Import LandXML Terrain Model
RegardsAndrew BellTechnical SupportBentley Systems
Hi Barry,
Barry Lothian said:I'm not after a triangulated mesh
Why? The triangulated mesh is a standard way how to create and render DTM.
Barry Lothian said:Is there a simple solution to this?
As Andrew wrote, there are more ways how to do it, but they typically require external software.
For small terrains, I usually use "create mesh from points" tool. When points (spots) are not available, I use XYZ export, mentioned also by Andrew, to export data into XYZ and import them into (usually new) model to be used as input for the mesh triangulation.
With regards,
Jan
Bentley Accredited Developer: iTwin Platform - AssociateLabyrinth Technology | dev.notes() | cad.point
You are using Microstation? If so there is a Stencil tool under vizualization which can project 2D elements on 3D mesh which you can create from3D points as per Andrew Bell workflow. But you will face problems as the elevation text is not snapped to spot points so the mesh will not be correct in those places. There is a tolerance setting for such cases if using Openroads/OpenSite Terrain import but it doesn't work as expected(reported to Bentley) - https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/191384/terrain-create-by-text-interpolation
Barry Lothian said:something clean which I can then generate a 2D elevation using export visible edges.
Not sure if export visible edges create elevations.