Official documentation for creating rendering themes in mapsforge_flutter?

[troNpo]

Hi everyone,
I'm working on a custom rendering theme to use with the mapsforge_flutter library. I've noticed that the rules used to define the theme seem to follow the same XML structure as native Mapsforge libraries. However, when visualizing the result in Flutter, the style appears more similar to VTM-based themes.

My question is:

• Is there any official documentation or specific guide on how to define rendering theme rules for mapsforge_flutter?
• Are there any relevant differences compared to traditional Mapsforge or VTM themes that I should be aware of?

Any guidance, examples, or links would be greatly appreciated.
Thanks in advance!

[mikes222]

I followed the rules from the native Mapsforge library so the visualization should be quite similar.

In order to tackle your issue I ask you to provide an example:

• rendering theme you used
• mapfile you used
• what do you expect (screenshot?)
• what is your actual result with mapsforge_flutter?

Since the rules should be the same there is no specific documentation currently in this project. I will however provide a link to the original documentation in future upgrades of this lib.

[troNpo]

Hello sorry for the delay, I had to recover my old Android to be more specific in the examples
I am a user of OruxMaps this app uses the 3 libraries of mapsforge of OruxMaps.
OruxMaps Gp Android
Use native mapsforge and native vtm

Tiramisu theme with native mapsforge.

Tiramisu theme with native vtm.

OruxMaps ios
Use mapsforge flutter (v3)

Tiramisu theme with mapsforge flutter.
As you can see the visualization is closer to how themes are rendered in Vtm, for example when using attributes such as
dy="15"
For distance on the axis, of a point or a line, in mapsforge flutter you have to triple the value almost to get results similar to those of native mapsforge.
I hope I have explained myself more clearly.
The same goes for attributes such as
priority="100"
Thank you very much for your work, I will follow the novels closely.

Do you expect to implement libraries for hill shading?
And to be able to use the theme settings, I mean to be able to select the layers that aren't fixed in a theme's settings.

Best regards

[mikes222]

Send me:

• a link to the mapfile
• a link to the rendertheme-file
• the coordinates of theses screenshots

With these informations I can check what is going on and why there are differences to the native mapsforge library.

ad 2: Hillshading is already implemented, themes currently not.

[troNpo]

The map in use is Spain-Portugal from opeandromaps
https://www.openandromaps.org/en/downloads/europe
The theme can be found here Tiramisu
https://github.com/IgorMagellan/Tiramisu

You can check the result of the images in any country with the hiking trails, cycling trails.
They are to show themselves only on one side of the road, not on both.
In case you don't want to download a country other than your own.
The coordinates of the catches are:
geo:37.6374038,-6.0195851,240.20

Thanks for future testing.
I'll wait for the app to update the libraries to enjoy the shading.
In the meantime, I'll design a simple theme with no adjustments so as not to collapse with the multi-layer overlay
Thank you again.

[mikes222]

I changes some code in the libary. It now supports dy values.

[troNpo]

Thank you very much for the work and information, I look forward to the update of the libraries in OruxMaps iOS to check the result. I would like to compare my work on other apps or platforms but I don't know which ones use mapsforge_flutter. Greetings