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dev:technology:supported_formats:models:3dtiles [2020/01/21 14:42]
lander 		dev:technology:supported_formats:models:3dtiles [2021/08/16 09:46] (current)
reine
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 ===== Cesium 3DTiles ====== ===== Cesium 3DTiles ======
 +
 +==== Importing Cesium 3DTiles =====
 +For importing the Cesium 3DTiles format one additional file, next to the .json file which describes the structure of the tiles, a .3DTiles file needs to be created.
 +Next to the XXX.json file create an XXX.3dtiles file which has the same naming as the JSON file.
 +
 +Import or drag and drop this file into Orbit will visualize the Cesium 3DTiles. In the desktop Content manager, the Cesium 3DTiles can only be visualized in the MapGL component. 
 +
 +At import into Orbit, an XXX.ini and XXX.[[dev:technology:supported_formats:other:ord|ord]] file will be created next to the XXX.3dtiles file. The XXX.ini file consists of scaling and translation values. The scale is by default set to 1 and translation is set to 0 in all three directions (x,y, and z). Note that these files are obligated to be present next to the XXX.3dtiles file to be able to use the files in Orbit 3DM Publisher or 3D Mapping Cloud.
  
 ==== Geometric error ===== ==== Geometric error =====
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 The default value of the scale factor is 1.0. The default value of the scale factor is 1.0.
 +
 +For example, some scale factors and the effect on the data streaming (megabytes) for a certain view (GenMap,20200117)
 +
 +^ Scale Factor ^ Render Datasize (MB) ^ Download Datasize (MB) ^ Quality ^
 +| 0.10 | 8.0 | 22.3 | poor |
 +| 0.25 | 24.7 | 54.9 | good |
 +| 0.30 | 37.4 | 71.9 | good |
 +| 0.40 | 45.8 | 109.0 | very good |
 +| 0.50 | 51.2 | 141.1 | very good |
 +| 1.00 | 60.3 | 218.0 | excellent |
 +
 +The chosen scale factor was 0.40 for this dataset.
 +
 +One approach might be to open the 3D tiles dataset with the desktop viewer and zoom to a specific position. Then drag-and-drop the tileset while changing the scale factor using notepad. Write down the render and load data sizes for each setting.
 +
 
Last modified:: 2020/01/21 14:42