private void CopyVertiesToChildren()
{
var mid = (1 << Terrain.Subdivisions);
var half = (1 << Terrain.Subdivisions) + 1;
var verts = (2 << Terrain.Subdivisions) + 1;
ChildBL.ValidateVertices();
ChildBR.ValidateVertices();
ChildTL.ValidateVertices();
ChildTR.ValidateVertices();
CopyVertiesToChildren(ChildBL, verts, 0, half, 0, half, 0, 0);
CopyVertiesToChildren(ChildBR, verts, mid, verts, 0, half, mid, 0);
CopyVertiesToChildren(ChildTL, verts, 0, half, mid, verts, 0, mid);
CopyVertiesToChildren(ChildTR, verts, mid, verts, mid, verts, mid, mid);
}
