City sample in houdini can't process and export

mp_i · November 3, 2023, 5:03am

On the sidefx website

_331532 · December 8, 2023, 4:51pm

Any one has this issue? no buildings

The building’s PBC file is more than 40MB which seems to be successfully exported.

Rule Processor Report

Started :2023.12.08-17.33.21

Small_City_FULL_buildings_Rooftops : CITY_buildings

    Metadata (building_rooftop_biom)
            Key=type
            Filter=building_rooftop_biom ()
            Filter Type=Match Value Exactly

            Matches Filter

                    Matches Filter

                            Spawn Blueprint ()
                                    NamePattern=ROOFTOP_BIOM_N$INDEX
                                    MetadataKey=unreal_instance
                                    FolderPath=None

                                    Finalize

Finished :2023.12.08-17.33.21

_331532 · December 11, 2023, 3:55am

I had this too. Did you find a solution to it?

_331532 · December 12, 2023, 8:23am

some of the ground have no collision. Houdini 20.0.547 and UE5.3

Psijic_Void · January 12, 2024, 10:38am

There’s a next topic with same problems

So, to after fixing print () in python scripts, I found this error in the City processor:

Error Invalid source [/obj/Small_City/processor1/LOTS/BGEO_DATA_WRANGLING/file3](node:/obj/Small_City/processor1/LOTS/BGEO_DATA_WRANGLING/file3).
(Error: Unable to read file "Small_City/houdini/otls/BGEO_Data/BDF_Data.bgeo".

But the Linux path is: Small_City/houdini/otls/BGEO_data/
Looks like folder case is invalid. It’s not critical for Windows but is for Unix.

After creating a symlink I could render default Small_City.hip and Small_City_Freeway.hip

But can’t render my city because of the error in the city processor:

Error 
Invalid source /obj/geo1/processor1/LOTS/foreach_end43.
(Error: Failure to cook template geometry.).

Inside:

Error Invalid source [/obj/geo1/processor1/FREEWAY/switch_curb/groupcombine4](node:/obj/geo1/processor1/FREEWAY/switch_curb/groupcombine4).
(Error: 'seam*' is not a valid group.).

I tried to delete my freeway curve but looks like it’s necessary to implement.

sss1337xyz · February 9, 2024, 7:25pm

You were able to solve this problem, I ran into exactly the same one

g

upd: I was able to fix it by turning on the without pdg mode, only buildings appear with it
At the moment, I have a problem that not all buildings have roofs, I tried to make the fixes listed above on the thread, but without success

upd2: still, I really wanted to fix the pdg because it takes up less resources.

As a result, I found that Building.hda does not work on houdini 19.5.435.

it does not convert the building volume to the desired points and does not change the result in any way.

as an option, I have temporarily cut off the switch in the buildings node.

I will continue to dig further, I hope I will succeed

upd #3:
I decided to fix the roofs.

I have achieved some success by adding ARBITRARY_ROOF_PCLOUD.

I modified it a bit because I didn’t have building_id for these points, now they are.
(I wrote a simple vex script that takes the neighboring building id from a certain building during the cycle)
For this you will need to modify the City_Tile_Parser_arbitrary_rooftops asset.

However, so far I have problems with the fact that the roofs are a whole big block and it affects the building.
I will investigate further