hexagon_state_next()

static void hexagon_state_next ( HexagonGridState *  state )

static

Definition at line 145 of file lwgeom_generate_grid.c.

{
        if (!state || state->done) return;
        /* Move up one row */
        state->j++;
        /* Off the end, increment column counter, reset row counter back to (appropriate) minimum */
        if (state->j > ((state->i % 2) ? state->row_max_odd : state->row_max_even))
        {
                state->i++;
                state->j = ((state->i % 2) ? state->row_min_odd : state->row_min_even);
        }
        /* Column counter over max means we have used up all combinations */
        if (state->i > state->column_max)
        {
                state->done = true;
        }
}

References HexagonGridState::column_max, HexagonGridState::done, HexagonGridState::i, HexagonGridState::j, HexagonGridState::row_max_even, HexagonGridState::row_max_odd, HexagonGridState::row_min_even, and HexagonGridState::row_min_odd.

Referenced by ST_ShapeGrid().

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