Here is a simplified example.
I create a single procedural mesh component then add a mesh section for each tile. First you create the verts from the tile x/y and the z from the trace. Then you create the triangles and uv’s from the vert array indexes.
This is an example of 4 verts but i have found that 9 is enough to conform to terrain nicely.
It would be more complicated to create all the tiles from one mesh section but it would result in less draw calls so is perhaps worth it. To simplify it i would add 4 new verts to the array each loop as there is no real need to have each tile welded to the adjacent ones.
