Yunus Balcioglu

function int [ ] getPointNeighbours ( int geo; int ptindex; int depth; int accumulate )
{
    int pts [ ] = array ( ptindex );
    int lastpts [ ] = pts;
    
    for ( int i = 0; i < depth; ++i )
    {
        int newpts [ ] = { };
        foreach ( int pt; lastpts )
        {
            int connected [ ] = neighbours ( geo, pt );
            foreach ( int c; connected )
            {
                if ( find ( pts, c ) < 0 )
                {
                    append ( pts, c );
                    append ( newpts, c );
                }
            }
        }
        lastpts = newpts;
    }
    
    if ( accumulate )
        return pts;
    else
        return lastpts;
}

int pts [ ] = getPointNeighbours ( 0, 42, chi("depth"), chi("accumulate") );
foreach ( int pt; pts )
    setpointgroup ( 0, "pts", pt, 1 );