BatchTable id value out of bounds error with b3dm files from pg2b3dm

[cazitouni]

Hello @manisandro,

I am taking the liberty to open this ticket since we recently updated our QWC client, and we can now use the 3D map.

However, I have configured a theme like this:

        {
          "url": "/qgis/defaut",
          "title": "D\u00e9faut",
          "disabled": false,
          "default": true,
          "tiled": false,
          "mapTips": false,
          "thumbnail": "default.jpg",
          "attribution": "",
          "attributionUrl": "",
          "format": "image/png",
          "mapCrs": "EPSG:3948",
          "map3d": {
          "dtm": {"url": "https://wisiglw.cus.fr/donnees/fondsmap/ORTHOPHOTOS/Raster_Lidar_2021/mnt_raster_cog_2021.tif", "crs": "EPSG:3948"},
          "tiles3d": [
            {
              "name": "gid_canardiere",
              "title": "CANARDIERE",
              "url": "https://wisiglw.cus.fr/donnees/qgis/3dtiles/CANARDIERE/tileset.json"
            }
          ],
              "basemaps": [
                   {"name": "fond_de_carte_gris_ems", "visibility": true, "overview": true}
              ]
          },
          "searchProviders": [
            "sigli"
          ],
          "skipEmptyFeatureAttributes": false,
          "backgroundLayers": [
            {
              "name": "fond_de_carte_gris_ems",
              "printLayer": "wms:https://viewer.wisiglw.cus.fr/qgis/refer_fond_gris#refer_fond_gris",
              "visibility": true
            },
            {
              "name": "fond_de_carte_couleur_ems",
              "printLayer": "wms:https://viewer.wisiglw.cus.fr/qgis/refer_fond_gris#refer_fond_couleur",
              "visibility": false
            }
          ]
        },

3D maps shows well with the DTM and the background but no tarce of the 3d tiles.
If I look in the network requests, a request is made to the tileset.json with a good 200 response but afterward it didn't query the .b3dm tile.

This is the related tileset :

{
  "asset": {
    "version": "1.0"
  },
  "properties": {

  },
  "geometricError": 1,
  "root": {
    "boundingVolume": {
      "region": [0.135288019900986, 0.847330156125956, 0.135308708795508, 0.847343718918651, 187.956764588847, 198.803762534159]
    },
    "geometricError": 1,
    "refine": "REPLACE",
    "content": {
      "boundingVolume": {
        "region": [0.135288019900986, 0.847330156125956, 0.135308708795508, 0.847343718918651, 187.956764588847, 198.803762534159]
      },
      "uri": "tiles/0.b3dm"
    }
  }
}

If i use the tileset.json in a scene in Qgis it works well.

Did I miss anything during the configuration ?

Thanks in advance for you answer,
Kind regards, Clément.

[pka]

According to the root region, the coordinates of the 3D tiles are geographic (WGS84). QWC does currently only support projected cartesic coordinate reference systems. EPSG:3948 looks good, but the boundingVolume's have to be specified as box (https://github.com/CesiumGS/3d-tiles/tree/main/specification#box) in EPSG:3948.

[cazitouni]

Hello @pka,

Thanks for your answer.

Do you have a process/tools suggestion to make an .obj into the needed 3dtiles + tileset with the correct projection ( EPSG:3948 in my case), or converting the existing region tileset.

FME seems to only have option to make a region one in EPSG:4979, Cesium ION make it with the box but in what seems to be EPSG:4978 and py3dtiles doesnt support b3dm conversion from .xyz.

Thanks in advance, regards, Clément.

[pka]

The latest version of pg2b3dm does support cartesic coordinates systems.

Usage example with Docker:

docker run -t --rm --user $(id -u):$(id -g) -v $PWD/dataout:/app/output --network=host -e PGPASSWORD=$DB_PASSWORD geodan/pg2b3dm:2.20.2 \
  -h 127.0.0.1 -U citydb -d citydb -t geometry_data -c geometry --keep_projection true --attributecolumns feature_id

[cazitouni]

Thanks for your response. I tried using pg2b3dm, but the software only outputs a glb , which doesn't load anyway.

I'll stop looking into it for now, as I don't have much time to spend on this issue.

Thanks again for your help.
Best regards,
Clément

[pka]

pg2b3dm has an option --create_gltf false to fall back to b3dm files.

[cazitouni]

Thanks for the tips.

I now have 3dtiles, I see them loading on the network tab, but nothing appears on the map despite suposedly good coordinates in EPSG:3948.

Getting a tileset like this one

{
  "asset": {
    "generator": "pg2b3dm 2.20.2.0",
    "version": "1.1",
    "crs": "EPSG:3948"
  },
  "geometricError": 2000,
  "root": {
    "transform": [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 2050607.884542, 7271831.904276, 0, 1],
    "geometricError": 2000,
    "refine": "ADD",
    "boundingVolume": {
      "box": [0, 0, 145.629916, 43.2278569999617, 0, 0, 0, 43.273823000025, 0, 0, 0, 5.42360050000001]
    },
    "content": {
      "uri": "content/{level}_{x}_{y}.b3dm"
    },
    "implicitTiling": {
      "availableLevels": 6,
      "subdivisionScheme": "QUADTREE",
      "subtreeLevels": 3,
      "subtrees": {
        "uri": "subtrees/{level}_{x}_{y}.subtree"
      }
    }
  }

I got an error like this in the console

BatchTable: id value "-202.39199829101562" out of bounds for "260" features number.

Regards, Clément.

[pka]

That BatchTable error looks bad. Could you try without attribute columns?

docker run -t --rm --user $(id -u):$(id -g) -v $PWD/dataout:/app/output --network=host -e PGPASSWORD=$DB_PASSWORD geodan/pg2b3dm:2.20.2 \
  -h 127.0.0.1 -U citydb -d citydb -t geometry_data -c geometry --keep_projection true

Which QWC version are you using? The latest releases do support GLB tiles.

[cazitouni]

Without I still got the same error but like this

BatchTable: id value "-202.39199829101562" out of bounds for "0" features number.

Isn't it strange that it try to query a negative float ID ?

Version is QWC2 Build 2025.08.12

B3dm files look like this with id, Without id it's pretty much the same with an empty batchTablejson.

{
    "magic": "b3dm",
    "version": 1,
    "byteLength": 49720,
    "featureTableJsonByteLength": 20,
    "featureTableBinaryByteLength": 0,
    "batchTableJsonByteLength": 2592,
    "batchTableBinaryByteLength": 0,
    "featureTableJson": {
        "BATCH_LENGTH": 510
    },
    "batchTableJson": {
        "id": [
            2353,
            2355,
            2356,
            2358,
            2359,
            2360,
            2361,
            2362,
            2363,
            2364,
            2365,
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            2416,
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        ]
    },
    "glb": {
        "JSON": {
            "asset": {
                "generator": "pg2b3dm 2.20.2.0",
                "version": "2.0"
            },
            "accessors": [
                {
                    "name": "POSITION",
                    "bufferView": 0,
                    "componentType": 5126,
                    "count": 1530,
                    "max": [
                        204.8000030517578,
                        -151.0240020751953,
                        150.60000610351562
                    ],
                    "min": [
                        152.6409149169922,
                        -204.8000030517578,
                        133.3000030517578
                    ],
                    "type": "VEC3"
                },
                {
                    "name": "NORMAL",
                    "bufferView": 0,
                    "byteOffset": 12,
                    "componentType": 5126,
                    "count": 1530,
                    "max": [
                        1,
                        0.9999550580978394,
                        1
                    ],
                    "min": [
                        -0.9999630451202393,
                        -1,
                        -1
                    ],
                    "type": "VEC3"
                },
                {
                    "name": "_BATCHID",
                    "bufferView": 0,
                    "byteOffset": 24,
                    "componentType": 5126,
                    "count": 1530,
                    "max": [
                        509
                    ],
                    "min": [
                        0
                    ],
                    "type": "SCALAR"
                },
                {
                    "bufferView": 1,
                    "componentType": 5123,
                    "count": 1530,
                    "type": "SCALAR"
                }
            ],
            "bufferViews": [
                {
                    "buffer": 0,
                    "byteLength": 42840,
                    "byteStride": 28,
                    "target": 34962
                },
                {
                    "buffer": 0,
                    "byteLength": 3060,
                    "byteOffset": 42840,
                    "target": 34963
                }
            ],
            "buffers": [
                {
                    "byteLength": 45900
                }
            ],
            "materials": [
                {
                    "doubleSided": true,
                    "pbrMetallicRoughness": {
                        "metallicFactor": 0,
                        "roughnessFactor": 0.501960813999176
                    }
                }
            ],
            "meshes": [
                {
                    "name": "mesh",
                    "primitives": [
                        {
                            "attributes": {
                                "POSITION": 0,
                                "NORMAL": 1,
                                "_BATCHID": 2
                            },
                            "indices": 3,
                            "material": 0
                        }
                    ]
                }
            ],
            "nodes": [
                {
                    "matrix": [
                        1,
                        0,
                        0,
                        0,
                        0,
                        0,
                        -1,
                        0,
                        0,
                        1,
                        0,
                        0,
                        0,
                        0,
                        0,
                        1
                    ],
                    "mesh": 0
                }
            ],
            "scene": 0,
            "scenes": [
                {
                    "nodes": [
                        0
                    ]
                }
            ]
        },
        "BIN": 45900
    }
}

[pka]

I can reproduce this error (BatchTable: id value "-202.39199829101562" out of bounds for "0" features number.) with b3dm tiles. GLB tiles should work with your version though.

[cazitouni]

Hello @pka,

I re-tested with a .glb file using the attribute column, and it now works!
However, the .b3dm file is still buggy. Maybe we should reopen the issue to keep track of this bug? I'll leave that decision to you.

Thanks again for your support.

Best regards,
Clément