Nullable object must have a value

[YXYCZXY]

After following the example, I encountered this problem. I checked the data and found no issues with it. Do you know what this problem might be?

Center (wgs84): 117.29740155849998, 31.739770081825757
Starting Cesium mode...
Translation ECEF: -2489924.25,4824677,3335926
Lod column:
Geometric errors: 2000,0
Refinement: REPLACE
Geometric error used for implicit tiling: 2000
Add outlines: False
Use 3D Tiles 1.1 implicit tiling: True
Maximum features per tile: 1000
Start generating tiles...
Creating tile: 1_0_0.glb Unhandled exception. System.InvalidOperationException: Nullable object must have a value.
at System.Nullable1.get_Value() at Triangulate.PointExtensions.ToVector3(Point p) at Triangulate.PolygonExtensions.GetNormal(Polygon polygon) at Triangulate.Triangulator.Triangulate(Polygon inputpolygon) at Triangulate.Triangulator.GetTriangles(List1 geometries)
at Triangulate.Triangulator.Triangulate(MultiPolygon multipolygon)
at Triangulate.Triangulator.Triangulate(Geometry geom)
at Wkb2Gltf.GeometryProcessor.GetTriangles(Geometry geometry, Int32 batchId, ShaderColors shadercolors, Point center) in /src/wkb2gltf.core/GeometryProcessor.cs:line 33
at pg2b3dm.TileWriter.GetTriangles(List1 geomrecords, Point center) in /src/wkb2gltf.core/TileWriter.cs:line 41 at pg2b3dm.QuadtreeTiler.GenerateTiles(BoundingBox bbox, Tile tile, List1 tiles, Int32 lod, Boolean addOutlines, String defaultColor, String defaultMetallicRoughness, Boolean doubleSided, Boolean createGltf) in /src/b3dm.tileset/QuadtreeTiler.cs:line 104
at pg2b3dm.QuadtreeTiler.GenerateTiles(BoundingBox bbox, Tile tile, List1 tiles, Int32 lod, Boolean addOutlines, String defaultColor, String defaultMetallicRoughness, Boolean doubleSided, Boolean createGltf) in /src/b3dm.tileset/QuadtreeTiler.cs:line 86 at pg2b3dm.Program.<>c__DisplayClass3_0.<Main>b__0(Options o) in /src/pg2b3dm/Program.cs:line 183 at CommandLine.ParserResultExtensions.WithParsed[T](ParserResult1 result, Action`1 action)
at pg2b3dm.Program.Main(String[] args) in /src/pg2b3dm/Program.cs:line 28

[YXYCZXY]

Does this mean that these values cannot be empty?

[bertt]

Maybe the vertices don't have a z value?

[YXYCZXY]

Maybe the vertices don't have a z value?

Do Z values need to be processed through tesselate_building?

[bertt]

yes that tool will add z values

[YXYCZXY]

yes that tool will add z values

Thank you very much, I'll give it a try.

[bertt]

Btw I'm planning to add polygon support in pg2b3dm, well something for a next release

[YXYCZXY]

"The 'boundingVolume' in the generated tileset.json contains a region instead of a box. I was expecting a box because using this.box.clone() results in a not found error. How should I modify this? Thank you.

The data used is: bldg_footprints.shp.

The command used is:

tesselate_building -U postgres -h localhost -d datagis -t bldg -f mapbox -i geom -o geom_triangle --idcolumn id --stylecolumn style --shaderscolumn shaders

pg2b3dm -h localhost -U postgres -c geom_triangle --shaderscolumn shaders -t bldg -d datagis -g 100,0"

tileset.json：
{
"geometricError": 100.0,
"root": {
"transform": [
0.9682309627532959,
0.2500576674938202,
0.0,
0.0,
-0.15790829062461853,
0.6114256978034973,
0.7753861546516418,
0.0,
0.193891242146492,
-0.7507528066635132,
0.6314874887466431,
0.0,
1238318.875,
-4794808.5,
4006101.5,
1.0
],
"geometricError": 100.0,
"refine": "ADD",
"boundingVolume": {
"region": [
-1.319322081929964,
0.6822386041030266,
-1.3167909422503494,
0.684701563088823,
0.0,
76.58
]
},
"content": {
"uri": "content/{level}{x}{y}.glb"
},
"implicitTiling": {
"availableLevels": 5,
"subdivisionScheme": "QUADTREE",
"subtreeLevels": 3,
"subtrees": {
"uri": "subtrees/{level}{x}{y}.subtree"
}
}
},
"asset": {
"generator": "pg2b3dm 2.0.1.0",
"version": "1.1"
}
}

[bertt]

region is always generated, where do you get this error ("using this.box.clone() results in a not found error")?

[YXYCZXY]

region is always generated, where do you get this error ("using this.box.clone() results in a not found error")?

[bertt]

ah you are using MapBox, this is not supported at the moment. You have to use Cesium or an old version of pg2b3dm (<1.0). Or wait until MapBox v3 with 3D Tiles is working

[YXYCZXY]

啊，你使用的是MapBox，目前不支持。您必须使用 Cesium 或旧版本的 pg2b3dm (<1.0)。或者等到带有 3D Tiles 的 MapBox v3 开始工作

I understand, thank you very much