tile-grid 0.6.2

Library for map tile grid calculations.
Documentation 
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mod basic;
#[cfg(feature = "projtransform")]
mod proj;

pub use basic::*;
use core::fmt::Debug;
use ogcapi_types::common::Crs;

#[cfg(feature = "projtransform")]
pub type Transformer = crate::transform::proj::ProjTransformer;
#[cfg(not(feature = "projtransform"))]
pub type Transformer = BasicTransformer;

/// Basic set of coordinate transformation operations
pub trait Transform: Sized + Debug {
    fn from_crs(from: &Crs, to: &Crs, always_xy: bool /* =true */) -> Result<Self>;
    fn transform(&self, x: f64, y: f64) -> Result<(f64, f64)>;
    fn transform_bounds(
        &self,
        left: f64,
        bottom: f64,
        right: f64,
        top: f64,
        // densify_pts=21,
    ) -> Result<(f64, f64, f64, f64)>;
}

#[derive(thiserror::Error, Debug)]
pub enum Error {
    #[error("Unsupported transformation from `{0:?}` to `{1:?}`")]
    TransformationUnsupported(Crs, Crs),
    #[error("{0}")]
    TransformationError(String),
}

pub type Result<T> = std::result::Result<T, Error>;