Rendering issue - sometimes with building:part, outline and type=building

[HikeAndMap]

The screenshot shows the object in OSM

The screenshot below is the outline

The screenshot below is building:part (which is the same as the outline just a different relationship)

Below is the building:part for roof wall

And below the skillion roof

below is then type=building to group them all together

No errors from JOSM - yet see what I get rendered in OSM2World

[HikeAndMap]

Please by all means, if I do something wrong - kindly explain to me.. thank you

[HikeAndMap]

If I remove the type=building
with the outline and 3 building parts..

Delete the type=building relationship
delete the building:part which is a copy of the outline
and rename the other 2 building:part into building=

then it renders okay:

But that's lying.. that's mapping for the renderer but not the reality.
The reality is there's not 3 buildings on top of each other.
it's 1 building with 3 building parts..

[HikeAndMap]

Ah building:level on the outline creates the bug..

so building:level can't be defined on the outline or else building:part will have problems with rendering.

I won't close this - as it may be a bug.
but maybe it's not, if it's intentional feel free for the devs to close it with the comment:"building:levels is per design intentional to interfere with the rendering"

as I thought from OSM Wiki if height and min_height are defined then hat overrides building:level

but for 2D backwards compatibility one still adds it..

seems the renderer however doesn't like it so I just remove it.. but again, maybe the devs find it worth to work on this to ensure backwards compatibility - so I leave it up to the devs to close/not close this one

[tordanik]

In general, adding building:levels to the outline is correct even if the building's parts are mapped individually. So this might be a genuine bug.

As with the other issue, an .osm file would be helpful to reproduce the issue more easily.

[HikeAndMap]

Dear Tordanik, thank you for the reply.

With the following zip file (building:levels=1 in the outline) this is what I see:

false.zip

[HikeAndMap]

The following has building:levels=1 removed and this is what I get

good.zip