PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ vectortile_tile_combine()

static VectorTile__Tile* vectortile_tile_combine ( VectorTile__Tile *  tile1,
VectorTile__Tile *  tile2 
)
static

Definition at line 1434 of file mvt.c.

1435 {
1436  uint32_t i, j;
1437  VectorTile__Tile *tile;
1438 
1439  /* Hopelessly messing up memory ownership here */
1440  if (tile1->n_layers == 0 && tile2->n_layers == 0)
1441  return tile1;
1442  else if (tile1->n_layers == 0)
1443  return tile2;
1444  else if (tile2->n_layers == 0)
1445  return tile1;
1446 
1447  tile = palloc(sizeof(VectorTile__Tile));
1448  vector_tile__tile__init(tile);
1449  tile->layers = palloc(sizeof(void*));
1450  tile->n_layers = 0;
1451 
1452  /* Merge all matching layers in the files (basically always only one) */
1453  for (i = 0; i < tile1->n_layers; i++)
1454  {
1455  for (j = 0; j < tile2->n_layers; j++)
1456  {
1457  VectorTile__Tile__Layer *l1 = tile1->layers[i];
1458  VectorTile__Tile__Layer *l2 = tile2->layers[j];
1459  if (strcmp(l1->name, l2->name)==0)
1460  {
1461  VectorTile__Tile__Layer *layer = vectortile_layer_combine(l1, l2);
1462  if (!layer)
1463  continue;
1464  tile->layers[tile->n_layers++] = layer;
1465  /* Add a spare slot at the end of the array */
1466  tile->layers = repalloc(tile->layers, (tile->n_layers+1) * sizeof(void*));
1467  }
1468  }
1469  }
1470  return tile;
1471 }
static VectorTile__Tile__Layer * vectortile_layer_combine(VectorTile__Tile__Layer *layer, VectorTile__Tile__Layer *layer2)
Combine 2 layers.
Definition: mvt.c:1375

References vectortile_layer_combine().

Referenced by mvt_ctx_combine().

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