Output differences vs. published screenshots + LOD question

[Behaeen]

Hello,

I am running OSM2World 0.5.0-SNAPSHOT on macOS with Java 17. When I generate a 3D model for a German region, the output looks visually different from the screenshots published on the OSM2World website.

Could you please explain why this difference occurs?
Are there specific settings, parameters, or rendering options I need to adjust or has some different post-processing been applied on the results shown in the published screenshots?

Example:
My result:

Published example:
https://osm2world.org/examples/0.2.0/Passau_from_Inn_2012-09-13_highres-pov.png

Also, when I set the level of detail to 4, the generated buildings are still modeled with flat roofs.
Could you please explain how LOD1–LOD4 are defined in OSM2World?

Thank you very much for clarifying!

[tordanik]

The scene in your image appears to lack textures. This can happen either because it has been created without any style information (the OSM2World downloads from the website do include a style with textures, and it it usually enabled automatically, but depending on how you execute OSM2World, it might not have been used), or because they get lost at some later stage in the pipeline. How did you start OSM2World? And is the image taken from OSM2World's built-in preview, or from displaying the output in some other software?

The effect of LOD settings depend on the type of object, but for buildings, higher LOD (4 is the highest) will include additional details such as windows and indoor spaces. Roof shapes should be visible for you, but it is possible that there is simply no roof shape information for your area of interest available in your input data. Assuming that this is OpenStreetMap data, I can check if you provide your input file or a link to the area on osm.org.

[Behaeen]

Hello, thank you for the clarification!

I started OSM2World using the following command:

java -jar .../target/osm2world-desktop-0.5.0-SNAPSHOT.jar

The screenshot I shared was taken directly from OSM2World’s built-in preview (not from an external viewer).

Regarding the roof shapes: thanks for pointing out that it may depend on the available OSM data. I tested with another OSM dataset and the roof shapes appeared correctly.

[tordanik]

I started OSM2World using the following command:

java -jar .../target/osm2world-desktop-0.5.0-SNAPSHOT.jar

Ah, it seems you've built OSM2World from source. You will also need a map style, which is available from a separate repository: https://github.com/tordanik/OSM2World-default-style/tree/master

Either place it in the same directory as the .jar and execute the command from that location (so that the automatic detection works), or provide it on the command line as the parameter of the --config option.