I created terrain tiles with ctb and they work great with cesium.
Now the thing is i need to use those tile in another framework for three.js.
The thing i dont understand is how the tile system works.
It does not seem to be the same as wtms tiles like
For this example which correspond to the “region” i built with ctb i dont get that tile.
It seems there is a zoom delta (because i see x=16 in zoom 4). but there is also a delta in y which i cant seem to understand.
Can someone help in understanding how to choose the correct the terrain tile (from ctb) when i have wtms x/y/zoom ?