calc_tile_size()

static void calc_tile_size ( uint32_t  dimX, uint32_t  dimY, int *  tileX, int *  tileY  )

static

Definition at line 468 of file raster2pgsql.c.

{
        uint32_t min_tile_size = 30;
        uint32_t max_tile_size = 300;
 
        for (uint8_t current_dimension = 0; current_dimension <= 1; current_dimension++)
        {
                uint32_t img_size = (current_dimension == 0) ? dimX : dimY;
                uint32_t best_gap = max_tile_size;
                uint32_t best_size = img_size;
 
                if (img_size > max_tile_size)
                {
                        for (uint32_t tile_size = max_tile_size; tile_size >= min_tile_size; tile_size--)
                        {
                                uint32_t gap = img_size % tile_size;
                                if (gap < best_gap)
                                {
                                        best_gap = gap;
                                        best_size = tile_size;
                                }
                        }
                }
 
                if (current_dimension == 0)
                        *tileX = best_size;
                else
                        *tileY = best_size;
        }
}

Referenced by convert_raster().

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