Struct ColumnarLayer 

pub struct ColumnarLayer {
    pub name: String,
    pub feature_ids: Vec<u64>,
    pub start_times: Vec<i64>,
    pub end_times: Vec<i64>,
    pub geometry: GeometryColumn,
    pub vertex_times: Option<Vec<Vec<i64>>>,
    pub vertex_values: Option<Vec<Vec<f32>>>,
    pub vertex_value_matrix: Option<Vec<Vec<f32>>>,
    pub triangles: Option<Vec<Vec<u32>>>,
    pub properties: Vec<(String, PropertyColumn)>,
}

One decoded/encodable tile layer.

Fields

name: String

Layer name (e.g. "default", "default_originals").

feature_ids: Vec<u64>

Per-feature id.

start_times: Vec<i64>

Per-feature start time (Unix ms, absolute).

end_times: Vec<i64>

Per-feature end time (Unix ms, absolute).

geometry: GeometryColumn

Geometry, one entry per feature.

vertex_times: Option<Vec<Vec<i64>>>

Optional per-vertex timestamps (Unix ms). When present, length equals the feature count and each inner vec matches that feature’s vertex count.

vertex_values: Option<Vec<Vec<f32>>>

Optional per-vertex scalar values (producer-defined; e.g. sea-surface temperature for the ocean-drifter dataset). When present, length equals the feature count and each inner vec matches that feature’s vertex count. NaN marks a vertex with no value; renderers map it to a fallback color.

vertex_value_matrix: Option<Vec<Vec<f32>>>

Optional per-vertex × per-time-bucket value matrix, flattened vertex-major per feature: matrix[v * num_buckets + b]. When present, length equals the feature count and each inner vec is feature_vertex_count * num_buckets long. Lets a static-geometry overview carry a per-vertex time series (e.g. flow-corridor counts per bin) so the renderer animates resident data instead of re-fetching geometry per bucket. Encoded as the tile’s vertex_value_matrix column; num_buckets is recorded in schema metadata under stt:vertex_value_buckets.

triangles: Option<Vec<Vec<u32>>>

Optional pre-baked triangle indices for polygon features (MLT-style).

When present, triangles.len() == feature_count and each inner vec is the flat triangle-index list (groups of 3 vertex indices) produced by earcut at build time. Indices are LOCAL to the feature: they reference positions within that feature’s own ring coordinates, so the renderer only needs to add the feature’s startIndex to each one.

Only meaningful for GeometryColumn::Polygon. Encoders that set this on a non-polygon layer will have it dropped at encode time.

properties: Vec<(String, PropertyColumn)>

Property columns, keyed by name. Each column has one value per feature.

Implementations

impl ColumnarLayer

pub fn feature_count(&self) -> usize

Feature count for this layer.

Trait Implementations

impl Clone for ColumnarLayer

fn clone(&self) -> ColumnarLayer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ColumnarLayer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.