“box” : {
“type” : “array”,
“description” : “An array of 12 numbers that define an oriented bounding box in WGS84 coordinates.
The first three elements define the x, y, and z values for the center of the box.
The next three elements (with indices 3, 4, and 5) define the x axis direction and length.
The next three elements (indices 6, 7, and 8) define the y axis direction and length.
The last three elements (indices 9, 10, and 11) define the z axis direction and length.”,
“items” : {
“type” : “number”
},
“minItems” : 12,
“maxItems” : 12
},
``
I’m wondering what WGS84 coordinates does exactly mean :
Geographic/WGS84 : X & Y are Lon/Lat in radians and Z is a value in meters,
ECEF/WGS84 : X, Y and Z are ECEF coordinates in meters.
Hi,
after looking on how 3D TileSets are loaded and interpreted in Cesium, I think that Box coordinates have to be ECEF (Cartesian) coordinates.
As I tile my input dataset using cartographic rectangles, corresponding oriented boxes in ECEF system are not easy to compute (and are probably not really boxes).
I will try to tile in geographic coordinates and the use the region tag in tileset.json.
