pub trait Transform<T> {
type Output;
// Required methods
fn transform(&mut self, proj: &Proj) -> Result<(), ProjError>;
fn transformed(&self, proj: &Proj) -> Result<Self::Output, ProjError>;
// Provided methods
fn transform_crs_to_crs(
&mut self,
source_crs: &str,
target_crs: &str
) -> Result<(), TransformError> { ... }
fn transformed_crs_to_crs(
&self,
source_crs: &str,
target_crs: &str
) -> Result<Self::Output, TransformError> { ... }
}Expand description
Transform a geometry using PROJ.
Required Associated Types§
Required Methods§
sourcefn transform(&mut self, proj: &Proj) -> Result<(), ProjError>
fn transform(&mut self, proj: &Proj) -> Result<(), ProjError>
Transform a Geometry by mutating it in place.
Examples
Transform a geometry using a PROJ string definition:
use geo_types;
use proj::{Proj, Transform};
let mut point = geo_types::point!(x: -36.508f32, y: -54.2815f32);
let proj = Proj::new("+proj=axisswap +order=2,1,3,4").expect("invalid proj string");
point.transform(&proj);
assert_relative_eq!(
point,
geo_types::point!(x: -54.2815f32, y: -36.508f32)
);sourcefn transformed(&self, proj: &Proj) -> Result<Self::Output, ProjError>
fn transformed(&self, proj: &Proj) -> Result<Self::Output, ProjError>
Immutable flavor of Transform::transform, which allocates a new geometry.
Examples
Transform a geometry using a PROJ string definition:
use geo_types;
use proj::{Proj, Transform};
let point = geo_types::point!(x: -36.508f32, y: -54.2815f32);
let proj = Proj::new("+proj=axisswap +order=2,1,3,4").expect("invalid proj string");
assert_relative_eq!(
point.transformed(&proj).unwrap(),
geo_types::point!(x: -54.2815f32, y: -36.508f32)
);
// original `point` is untouched
assert_relative_eq!(
point,
geo_types::point!(x: -36.508f32, y: -54.2815f32)
);Provided Methods§
sourcefn transform_crs_to_crs(
&mut self,
source_crs: &str,
target_crs: &str
) -> Result<(), TransformError>
fn transform_crs_to_crs( &mut self, source_crs: &str, target_crs: &str ) -> Result<(), TransformError>
Transform a geometry from one CRS to another CRS by modifying it in place.
Examples
use proj::Transform;
use geo_types::{point, Point};
let mut point: Point<f32> = point!(x: -36.508f32, y: -54.2815f32);
point.transform_crs_to_crs("EPSG:4326", "EPSG:3857").unwrap();
assert_relative_eq!(point, point!(x: -4064052.0f32, y: -7223650.5f32));sourcefn transformed_crs_to_crs(
&self,
source_crs: &str,
target_crs: &str
) -> Result<Self::Output, TransformError>
fn transformed_crs_to_crs( &self, source_crs: &str, target_crs: &str ) -> Result<Self::Output, TransformError>
Immutable flavor of Transform::transform_crs_to_crs, which allocates a new geometry.
Examples
use proj::Transform;
use geo_types::{point, Point};
let mut point: Point<f32> = point!(x: -36.508f32, y: -54.2815f32);
assert_relative_eq!(
point.transformed_crs_to_crs("EPSG:4326", "EPSG:3857").unwrap(),
point!(x: -4064052.0f32, y: -7223650.5f32)
);