Hello I'm trying the implicit_tiling and wonder what is the best way to define a tiles

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Yes, I could see there being higher level tiling schemes like <code class="notranslate

Define a tileset with implicit_tiling that matches the geodetic tiling about 3d-tiles HOT 5 CLOSED

pjanetzek commented on May 26, 2024 2

Define a tileset with implicit_tiling that matches the geodetic tiling

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Comments (5)

lilleyse commented on May 26, 2024

@pjanetzek it would look something like this - two root tiles, each with implicit tiling.

{
  "asset": {
    "version": "1.1"
  },
  "geometricError": 631380.3810809468,
  "root": {
    "boundingVolume": {
      "region": [
        -3.141592653589793,
        -1.5707963267948966,
        3.141592653589793,
        1.5707963267948966,
        -113.30585479736328,
        306.65130615234375
      ]
    },
    "children": [
      {
        "boundingVolume": {
          "region": [
            -3.141592653589793,
            -1.5707963267948966,
            0,
            1.5707963267948966,
            -91.98120880126953,
            306.65130615234375
          ]
        },
        "content": {
          "uri": "0/{level}/{x}/{y}.glb"
        },
        "geometricError": 157845.0952702367,
        "implicitTiling": {
          "availableLevels": 16,
          "subdivisionScheme": "QUADTREE",
          "subtreeLevels": 7,
          "subtrees": {
            "uri": "0/{level}/{x}/{y}.subtree"
          }
        }
      },
      {
        "boundingVolume": {
          "region": [
            0,
            -1.5707963267948966,
            3.141592653589793,
            1.5707963267948966,
            -113.30585479736328,
            84.61588287353516
          ]
        },
        "content": {
          "uri": "1/{level}/{x}/{y}.glb"
        },
        "geometricError": 157845.0952702367,
        "implicitTiling": {
          "availableLevels": 5,
          "subdivisionScheme": "QUADTREE",
          "subtreeLevels": 7,
          "subtrees": {
            "uri": "1/{level}/{x}/{y}.subtree"
          }
        }
      }
    ],
    "geometricError": 315690.1905404734,
    "refine": "REPLACE"
  }
}

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pjanetzek commented on May 26, 2024

Thanks a lot! This works indeed :)

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lilleyse commented on May 26, 2024

Great!

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pjanetzek commented on May 26, 2024

Thinking about this more I think it would be very handy to support the TMS tiling with two roots directly so that one could use existing tile servers without having to translate the URL somewhere.
E.g. one use case would be to use available quantized-mesh terrain data with an own cesium GltfConverter.

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lilleyse commented on May 26, 2024

Yes, I could see there being higher level tiling schemes like TMS global-geodetic that implicitly translate to the example above.

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