PostGIS  3.0.0dev-r@@SVN_REVISION@@

◆ mvt_agg_init_context()

void mvt_agg_init_context ( mvt_agg_context ctx)

Initialize aggregation context.

Definition at line 959 of file mvt.c.

References mvt_agg_context::bool_values_hash, mvt_agg_context::column_cache, mvt_agg_context::double_values_hash, mvt_agg_context::extent, mvt_agg_context::features_capacity, FEATURES_CAPACITY_INITIAL, mvt_agg_context::float_values_hash, mvt_agg_context::geom_index, mvt_agg_context::id_index, mvt_agg_context::keys_hash, mvt_agg_context::keys_hash_i, mvt_agg_context::layer, mvt_agg_context::name, mvt_agg_context::sint_values_hash, mvt_agg_context::string_values_hash, mvt_agg_context::tile, UINT32_MAX, mvt_agg_context::uint_values_hash, and mvt_agg_context::values_hash_i.

Referenced by pgis_asmvt_transfn().

960 {
961  VectorTile__Tile__Layer *layer;
962 
963  POSTGIS_DEBUG(2, "mvt_agg_init_context called");
964 
965  if (ctx->extent == 0)
966  elog(ERROR, "mvt_agg_init_context: extent cannot be 0");
967 
968  ctx->tile = NULL;
970  ctx->keys_hash = NULL;
971  ctx->string_values_hash = NULL;
972  ctx->float_values_hash = NULL;
973  ctx->double_values_hash = NULL;
974  ctx->uint_values_hash = NULL;
975  ctx->sint_values_hash = NULL;
976  ctx->bool_values_hash = NULL;
977  ctx->values_hash_i = 0;
978  ctx->keys_hash_i = 0;
979  ctx->id_index = UINT32_MAX;
980  ctx->geom_index = UINT32_MAX;
981 
982  memset(&ctx->column_cache, 0, sizeof(ctx->column_cache));
983 
984  layer = palloc(sizeof(*layer));
985  vector_tile__tile__layer__init(layer);
986  layer->version = 2;
987  layer->name = ctx->name;
988  layer->has_extent = 1;
989  layer->extent = ctx->extent;
990  layer->features = palloc (ctx->features_capacity *
991  sizeof(*layer->features));
992 
993  ctx->layer = layer;
994 }
struct mvt_kv_double_value * double_values_hash
Definition: mvt.h:74
struct mvt_kv_string_value * string_values_hash
Definition: mvt.h:72
char * name
Definition: mvt.h:60
mvt_column_cache column_cache
Definition: mvt.h:81
VectorTile__Tile * tile
Definition: mvt.h:69
struct mvt_kv_float_value * float_values_hash
Definition: mvt.h:73
VectorTile__Tile__Layer * layer
Definition: mvt.h:68
uint32_t keys_hash_i
Definition: mvt.h:79
size_t features_capacity
Definition: mvt.h:70
#define UINT32_MAX
Definition: lwin_wkt_lex.c:343
struct mvt_kv_uint_value * uint_values_hash
Definition: mvt.h:75
uint32_t geom_index
Definition: mvt.h:65
struct mvt_kv_bool_value * bool_values_hash
Definition: mvt.h:77
uint32_t values_hash_i
Definition: mvt.h:78
#define FEATURES_CAPACITY_INITIAL
Definition: mvt.c:42
uint32_t extent
Definition: mvt.h:61
struct mvt_kv_key * keys_hash
Definition: mvt.h:71
struct mvt_kv_sint_value * sint_values_hash
Definition: mvt.h:76
uint32_t id_index
Definition: mvt.h:63
Here is the caller graph for this function: