when i put a gltf path in b3dm() or other function ,it has fault like:
OSError: [Errno 63] File name too long: '/Users/zc/work/test/data:application/octet-stream;base64
this is why?how i can solve this problem or how can i convert gltf to b3dm or 3dtiles?

Original GLTF has a texture assigned and is pre-tiled as you can see in the picture I am trying to generate a tileset based on the GLTF, after executing the command

python main.py tileset path_to_gltf.gtlf

the tileset.json as well as the .b3dm files corresponding to the tiles are generated successfully. Upon loading the 3D tiles in a 3D viewer the texture is missing from most of the tiles. I also tried loading the tiles in a Cesium-based viewer and the textures are also missing. What would be the solution here? I saw that there are some recent commits addressing texture issues, maybe this problem is related? Let me know if this information is enough, thanks for looking into it.

Execute the command: python .\main.py glb demo.gltf demo.glb prompts the following error，how to fix?

Traceback (most recent call last): File "\gltf-to-3d-tiles-main\main.py", line 104, in app() File " \lib\site-packages\typer\main.py", line 214, in call return get_command(self)(*args, **kwargs) File " \lib\site-packages\click\core.py", line 1128, in call return self.main(*args, **kwargs) File " \lib\site-packages\click\core.py", line 1053, in main rv = self.invoke(ctx) File " \lib\site-packages\click\core.py", line 1659, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File " \lib\site-packages\click\core.py", line 1395, in invoke return ctx.invoke(self.callback, **ctx.params) File " \lib\site-packages\click\core.py", line 754, in invoke return __callback(*args, **kwargs) File " \lib\site-packages\typer\main.py", line 500, in wrapper return callback(**use_params) # type: ignore File " \gltf-to-3d-tiles-main\main.py", line 85, in glb copy_textures(fin, fout, gltf.images) File " \gltf-to-3d-tiles-main\main.py", line 50, in copy_textures for image in images: TypeError: 'NoneType' object is not iterable

`PS \gltf-to-3d-tiles-main> python .\main.py tileset .\0input\shenzhenxiaoxue.gltf Traceback (most recent call last):

File ".\main.py", line 80, in app()

File ".\main.py", line 33, in tileset gltf_to_tileset(fin, fout, measure, up_direction)

File "D:\Users\hpl\Downloads\Compressed\gltf-to-3d-tiles-main_2\gltf-to-3d-tiles-main\converter\gltf_to_tileset.py", line 79, in gltf_to_tileset tiles = list(map(lambda id: Tile(content_id=id, instance_box=gltf_slicer.get_bounding_box(

File "D:\Users\hpl\Downloads\Compressed\gltf-to-3d-tiles-main_2\gltf-to-3d-tiles-main\converter\gltf_to_tileset.py", line 80, in id), instances_matrices=gltf_slicer.get_matrices(id), matrix=Matrix4(), gltf=gltf_slicer.slice_mesh(id).as_bytes(), extras=gltf_slicer.get_extras(id)), range(gltf_slicer.meshes_count)))

File "D:\Users\hpl\Downloads\Compressed\gltf-to-3d-tiles-main_2\gltf-to-3d-tiles-main\gltf\slicer.py", line 125, in slice_mesh return self.slice_primitives(self.meshes[mesh_id].primitives)

File "D:\Users\hpl\Downloads\Compressed\gltf-to-3d-tiles-main_2\gltf-to-3d-tiles-main\gltf\slicer.py", line 89, in slice_primitives return Glb([self.__get_buffer(buffer_view_indices)], meshes=self.__get_meshes(primitives, accessor_indices, material_indices), accessors=self.__get_accessors(accessor_indices, buffer_view_indices),

File "D:\Users\hpl\Downloads\Compressed\gltf-to-3d-tiles-main_2\gltf-to-3d-tiles-main\gltf\slicer.py", line 152, in __get_buffer view = self.buffer_views[index]

TypeError: list indices must be integers or slices, not NoneType`

Hi! I have a GLB-file with cube model that I want view in the cesium (cube.glb). Trying to generate tiles produces the result:

{
    "asset": {
        "version": "1.0",
        "tilesetVersion": "1.0.0.0"
    },
    "geometricError": 6.928203230275509,
    "root": {
        "boundingVolume": {
            "box": [
                0.0, 0.0, 0.0,
                2.0, 0, 0,
                0, 2.0, 0,
                0, 0, 2.0
            ]
        },
        "geometricError": 6.928203230275509,
        "refine": "ADD",
        "children": [
            {
                "boundingVolume": {
                    "box": [
                        0.0, 0.0, 0.0,
                        1.0, 0, 0,
                        0, 1.0, 0,
                        0, 0, 1.0
                    ]
                },
                "geometricError": 6.928203230275509,
                "transform": [
                    2.0, 0.0, 0.0, 0.0, 
                    0.0, 2.0, 0.0, 0.0,
                    0.0, 0.0, 2.0, 0.0,
                    0.0, 0.0, 0.0, 1.0
                ],
                "content": {
                    "uri": "0.b3dm"
                }
            }
        ]
    }
}

Q: Is the transform section positioned correctly?

In order to get the correct result in a cesium, I have to generate a b3dm file (b3dm mode), replace name inside uri section and move the transform section to the correct place and change it's content. It seems to me that there are too many operations.

I generated a .gltf file using another tool. When processing it with gltf-to-3d-tiles, I found that self.scene = None in Slicer.__init__().

This is easily fixed by setting self.scene = 0 to make the tool resilient, though it is probably an error in the previous tool that I used that caused no scene to be set in that resulting data.

A high-level error message could be preferable to this:

File "...\gltf-to-3d-tiles\gltf\slicer.py", line 24, in __init__
    root = self.scenes[self.scene].nodes[0]
TypeError: list indices must be integers or slices, not **NoneType**

Thank you for writing this tool. I want to convert a gltf/glb file to b3dm. But EVERY file I tried throws errors.

some errors:

 (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf0 in position 8: invalid continuation byte

 Glb(buffers, **gltf.as_dict(False)).as_bytes()).as_bytes())
TypeError: Glb.__init__() got multiple values for argument 'buffers'

I've tried to tweak some codes but no luck.

I wonder if my files are broken or my environment got something wrong.

One of the test files: https://models.babylonjs.com/aerobatic_plane.glb

What's the expected python version to run this tool? I'm using 3.10.

Hi, is there a way to apply an adjustment transform? I need to adjust the position of the 3d tiles. This works on Cesium ion, it adds a transform array but I would like to be able to do this kind of thing with this library or is there a way to patch the generated tileset.json file?

I have some glTF files which are in z-up coordinates (i.e. they came in UTM-ish coordinates). It would be useful if there was an option to tell the converter not to apply the Z_UP_TO_Y_UP_MATRIX when generating tilesets.

Handle the case where a glTF file has multiple buffers. This has the nice effect of reducing memory usage and tile size considerably, if you create a glTF with one buffer per mesh or per bufferView.

There are also some fixes for buffer alignment. Tilesets are now almost clean if you run them through CesiumGS/3d-tiles-validator. (And by "almost", I mean "not yet".)

• Apply translation/rotation/scale if present (and matrix is not).
• Calculate geometricError on the transformed box, to handle scaling correctly.
• Fix a couple of bugs in the handling of textures: textures[i].source does not necessarily point to images[i], and samplers were not being copied across to the glbm.
• Fix handling of metres vs feet.

I generated a tileset from this gltf and the resulting tileset seems to be either missing nodes or is incorrectly generated.

acc_base_model_gltf.zip acc_base_model.bin

It generated this tileset.json tileset.json.zip

This is what the tileset looks like in Cesium Cesium Sandcastle test

Complete Cesium example

Cesium generated tileset.json tileset.json.zip

If I import the same gltf into Cesium Ion it generates this

Hi,

I'm trying the CLI to convert a 16MB glTF to 3d-tiles and the process takes more than 10 BG of RAM until it is killed by my kernel.

The gltf file uses big coordinates (up to ~5 000 000), I don't know if it may be related.

python main.py tileset building.gltf outputs/

building.zip