#include <style.h>

Data Fields
double	min_zoom

double	max_zoom

double	tolerance

double	cluster_max_zoom

mln_buffer_view	cluster_properties

uint32_t	tile_size

uint32_t	buffer

uint32_t	cluster_radius

uint32_t	cluster_min_points

bool	line_metrics

bool	cluster

bool	synchronous_tiling

Detailed Description

Options for GeoJSON sources.

MapLibre Native fixes these options when the source is created, so mln_map_set_geojson_source_url() keeps the options the source was added with, and mln_map_set_geojson_source_data() requires data prepared with matching options.

Field Documentation

◆ buffer

uint32_t mln_geojson_source_options::buffer

Tile buffer in pixels. Defaults to 128.

◆ cluster

bool mln_geojson_source_options::cluster

Clusters point features. Defaults to false.

Clustering applies to feature collections whose every feature carries point geometry. MapLibre Native clusters feature collections only, so mln_geojson_source_data_create() rejects a bare geometry or a single feature, along with a feature collection that mixes in other geometry. An empty feature collection stays accepted and carries nothing to cluster.

◆ cluster_max_zoom

double mln_geojson_source_options::cluster_max_zoom

Highest zoom that clusters points. Defaults to 17.

◆ cluster_min_points

uint32_t mln_geojson_source_options::cluster_min_points

Points required to form a cluster. Defaults to 2.

◆ cluster_properties

mln_buffer_view mln_geojson_source_options::cluster_properties

Cluster aggregation expressions keyed by property name, as a JSON object whose members follow the MapLibre Style Spec clusterProperties form. The UTF-8 bytes are borrowed for the call.

◆ cluster_radius

uint32_t mln_geojson_source_options::cluster_radius

Cluster radius in pixels. Defaults to 50.

◆ line_metrics

bool mln_geojson_source_options::line_metrics

Adds line distance metrics to line features. Defaults to false.

◆ max_zoom

double mln_geojson_source_options::max_zoom

Maximum tiling zoom. Defaults to 18.

◆ min_zoom

double mln_geojson_source_options::min_zoom

Minimum tiling zoom. Defaults to 0.

◆ synchronous_tiling

bool mln_geojson_source_options::synchronous_tiling

Slices requested tiles inline during the update pass. Defaults to false.

MapLibre Native normally slices tiles out of the prepared data index on a worker and shows them in a later frame. When this is set, slicing runs inline, so data installed through mln_map_set_geojson_source_data() reaches the next rendered frame at the cost of that work running on the update thread. mln_map_set_geojson_source_synchronous_tiling() overrides this at runtime.

◆ tile_size

uint32_t mln_geojson_source_options::tile_size

Tile extent in pixels. Defaults to 512.

◆ tolerance

double mln_geojson_source_options::tolerance

Douglas-Peucker simplification tolerance. Defaults to 0.375.

The documentation for this struct was generated from the following file:

/home/runner/work/maplibre-native-ffi/maplibre-native-ffi/include/maplibre_native_c/style.h

Data Fields