Adding a mesh to a loaded scene

[matthiasschwartz]

Hello, i'm trying to add a mesh, which i create in the python script, to a scene which i load from an .xml file.
I tried adding the mesh via the SceneParameters, aswell as scene.shapes(), but it did not work. mi.xml_to_props() also did not work, as it just returned a List, which i could not turn into a scene.
Is this possible in some other way?

[njroussel]

Hi

Currently, it is not possible to add a Mesh to a Scene once it has been loaded.

One nice workaround is, if you have your scene description in a Python dict, you can dynamically add your loaded mesh to the scene description and then load the scene. You can find an example here (last cell of the "Procedural mesh" section).

If you're dealing with a XML scene description, you can save your mesh to a PLY using Mesh.write_to_ply and then either add it to your XML file or you can read the contents of the XML file and edit the string to add your mesh and then use mitsuba.load_string.

[matthiasschwartz]

Okay, thanks for the answer! I will do it like that then