Hi Toby,
Recently, I've been working on exporter algorithms to get my QGIS layers
into Blender3D. The first release is in the plugin repo, marked as
experimental. Maybe you can use it?
https://plugins.qgis.org/plugins/io_3d_plugin/
Currently I'm working on a polygons to .obj exporter:
https://gitlab.com/terglobo/qgis_io_3d_plugin
Kind regards,
Raymond
On 3/4/25 06:10, Tobias Schula via QGIS-User wrote:
On Tuesday, 4 March 2025, 05:41:04 CET Harnish Patel via QGIS-User wrote:
I hope this message finds you well. I am currently working on an airflow
simulation project using Ansys Fluent, where I aim to simulate airflow
dynamics through an urban city area. To proceed with the simulation, I
require a 3D watertight geometry of the city to input into the simulation
software.
You can create a mesh from DEM data and buildings in QGIS, but the exported
mesh will hardly be watertight. I suggest you export it to a 3D modeling
software like blender.
You can use the plugin "Qgis2threejs", it will export into glTF which you can
import in blender:
https://plugins.qgis.org/plugins/Qgis2threejs/#plugin-details
Also read the documentation:
https://minorua.github.io/Qgis2threejs/docs/
Then consult the blender documentation and community for making your mesh
watertight. Unfortunately, my knowledge of Blender is constricted to modeling
for 3D games and that was 15 years ago.
Best regards
Toby
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