void alignProjectors(Tile tile) { int jrow = tile.getRowIndex(); int jcol = tile.getColumnIndex(); Projector bhp = tile.getBestHorizontalProjector(); if (bhp!=null) { bhp = new Projector(bhp); for (int irow=0; irow<_nrow; ++irow) { if (irow!=jrow) bhp.merge(_tiles[irow][jcol].getBestHorizontalProjector());