Comments (3)
Hey @cjhdsg,
If you pair the voxel data with a tileset metadata schema, you can specify a noData
value to compare the empty voxels to. This example is taken from the extension README.
"schema": {
"classes": {
"voxel": {
"properties": {
"temperature": {
"type": "SCALAR",
"componentType": "FLOAT32",
"noData": 999.9
},
"salinity": {
"type": "SCALAR",
"componentType": "UINT8",
"normalized": true,
"noData": 255
}
}
}
}
}
Then it would be a matter of comparing the values to this noData
value. Hope this helps!
from 3d-tiles.
Yes, I've added "noData" field, and wrote corresponding value in binary chunk. But it seemed not working. Here is my test dataset.
from 3d-tiles.
Some aspects of that test data set are nor entirely clear, and I'd have to look at some aspects of the voxel extension specification and other test data here.
But the given tileset contains
"implicitTiling" : {
"subdivisionScheme" : "OCTREE",
"subtreeLevels" : 1,
"availableLevels" : 1,
"subtrees" : {
"uri" : "subtrees/{level}.{x}.{y}.{z}.subtree"
}
}
Defining availableLevels: 1
does not seem to make sense for the given data set. Can you provide an example data that works and is valid, and that shows the problem that you are encountering? (Once we have this data, we can have a closer look at how to sensibly hide/omit certain cells - but we should start with a data set that works...)
(We will then still have to carefully check whether any unexpected behavior that you are observing is related to CesiumGS/cesium#12001 , which you brought up in https://community.cesium.com/t/3d-tiles-1-1-voxel/32239 ...)
from 3d-tiles.
Related Issues (20)
- Clarify the use of non-8-bit-channels in property textures HOT 1
- How to format data HOT 1
- glTF metadata uses integers where it should use "glTF IDs" HOT 1
- Inconsistency in tile schema and its description
- Cesium 1.1 tiling data failed to load
- Clarify details about `featureCount` and `nullFeatureId` HOT 4
- Can Earth Explorer 3D Map with Augmented reality be added as Viewer?
- Can Map Data Explorer iOS and Android be added as Viewer - it supports 3DTILES
- Selection Issue with GLB Model Organized by Tileset.json HOT 2
- Basic, minimal examples; sources for README figures HOT 10
- EXT_mesh_features Clarification: How many feature ids does an indexed geometry have when ids are implicitly derived? HOT 7
- EXT_mesh_features Rendering: How to visualize "interpolated" features? HOT 8
- 3D-Tiles 1.1 Implicit tile about .subtree binary file HOT 6
- Implementation notes refer to `bufferView` where `bitstream` should be used
- 3D-Tiles 1.1 implicit tile : Octree HOT 2
- 3D-Tiles 1.1 voxel HOT 1
- Clarification for content availability of implicit tileset roots HOT 4
- 3D-Tiles 1.1 voxel's customShader HOT 1
- 3D-Tiles 1.1 binary .voxel file HOT 3
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