I want to modify PostGIS geometry type TRIANGLE by adding additional information about its neighbours within TIN.
WKT representation might look as follows: TRIANGLEN ((0 0 0,1 1 1,1 0 2,0 0 0) ID n1 n2 n3), where ID is identifier of the current triangle and n1, n2, n3 are IDs of adjacent triangles.
Is it possible to achieve this?