Struct GeometryValues 

pub struct GeometryValues { /* private fields */ }

Parsed (decoded) geometry data

Implementations

impl GeometryValues

pub fn vector_types(&self) -> &[GeometryType]

Geometry types for each feature, in insertion order.

pub fn geometry_offsets(&self) -> Option<&[u32]>

Cumulative offsets into part_offsets for multi-geometry types. None when no multi-geometry features are present.

pub fn part_offsets(&self) -> Option<&[u32]>

Cumulative offsets into ring_offsets (or directly into vertices for LineString layers without rings). None for pure Point layers.

pub fn ring_offsets(&self) -> Option<&[u32]>

Cumulative offsets into the vertex buffer (counting whole vertices). None when no ring-level indirection is needed.

pub fn index_buffer(&self) -> Option<&[u32]>

Triangle index buffer produced by Earcut tessellation. None unless the GeometryValues was created with Self::new_tessellated.

pub fn triangles(&self) -> Option<&[u32]>

Per-feature triangle counts produced by Earcut tessellation. None unless the GeometryValues was created with Self::new_tessellated.

pub fn vertices(&self) -> Option<&[i32]>

Flat vertex buffer: [x0, y0, x1, y1, …] in tile coordinates.

pub fn to_geojson(&self, index: usize) -> MltResult<Geometry<i32>>

Build a GeoJSON geometry for a single feature at index i. Polygon and MultiPolygon rings are closed per GeoJSON spec (MLT omits the closing vertex).

impl GeometryValues

pub fn write_to(self, enc: &mut Encoder, codecs: &mut Codecs) -> MltResult<()>

Write the geometry column to enc.

impl GeometryValues

pub fn new_tessellated() -> Self

Returns a GeometryValues with an empty triangles buffer pre-initialized.

When triangles is Some, polygon push methods automatically compute and store Earcut tessellation data as geometries are added. Use Self::default when tessellation is not required.

pub fn with_geom(self, geom: &Geometry<i32>) -> Self

Add a geometry to this decoded geometry collection. This is the reverse of to_geojson - it converts a &Geometry<i32> into the internal MLT representation with offset arrays.

pub fn push_geom(&mut self, geom: &Geometry<i32>)

Add a geometry to this decoded geometry collection (mutable version).

Trait Implementations

impl Analyze for GeometryValues

fn collect_statistic(&self, stat: StatType) -> usize

fn for_each_stream(&self, _cb: &mut dyn FnMut(StreamMeta))

Call cb with the StreamMeta of every stream contained in self. Default implementation is a no-op (types that hold no streams).

impl Clone for GeometryValues

fn clone(&self) -> GeometryValues

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GeometryValues

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

Formats the value using the given formatter.

impl Default for GeometryValues

fn default() -> GeometryValues

Returns the “default value” for a type.

impl PartialEq for GeometryValues

fn eq(&self, other: &GeometryValues) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for GeometryValues

impl StructuralPartialEq for GeometryValues