Currently I'm trying to develop an LOD (Level of detail) system for a terrain mesh based on geometry nodes. I use a Separate Geometry node to split a grid into circular LOD regions and subdivide the inner regions further. This arises the problem of creating holes in the border zones of the mesh where the LODs change.
Here is my node setup:
Can any of you think of a solution to fix this problem?
Here is my final solution thanks to André Zmuda: