Struct HttpElevationSource 

pub struct HttpElevationSource { /* private fields */ }

An ElevationSource that fetches Terrain-RGB tiles over HTTP.

Implementations

impl HttpElevationSource

pub fn new( url_template: impl Into<String>, client: Box<dyn HttpClient>, encoding: TerrainRgbEncoding, ) -> Self

Create a new HTTP elevation source.

Arguments

• url_template - URL with {z}, {x}, {y} placeholders.
• client - The HTTP transport provided by the host application.
• encoding - How to decode RGB pixels into elevation values.

pub fn with_decoder( url_template: impl Into<String>, client: Box<dyn HttpClient>, encoding: TerrainRgbEncoding, decoder: Box<dyn TileDecoder>, ) -> Self

Create with a TileDecoder for decoding PNG/JPEG response bodies into RGBA8 pixel data before Terrain-RGB decode.

pub fn with_max_concurrent_requests(self, max_concurrent: usize) -> Self

Override the maximum number of concurrent terrain HTTP requests.

Trait Implementations

impl Debug for HttpElevationSource

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

Formats the value using the given formatter.

impl ElevationSource for HttpElevationSource

fn request(&self, id: TileId)

Start fetching elevation data for a tile. Returns immediately.

fn poll(&self) -> Vec<(TileId, Result<ElevationGrid, TerrainError>)>

Poll for completed elevation fetches.

fn diagnostics(&self) -> Option<ElevationSourceDiagnostics>

Optional source diagnostics for debugging terrain fetch/decode behavior.

fn cancel(&self, id: TileId) -> bool

Cancel a queued request for a terrain tile if it has not yet been sent.