Trait mappers::Projection

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pub trait Projection: Debug + Send + Sync + Copy {
    // Required methods
    fn project_unchecked(&self, lon: f64, lat: f64) -> (f64, f64);
    fn inverse_project_unchecked(&self, x: f64, y: f64) -> (f64, f64);

    // Provided methods
    fn project(&self, lon: f64, lat: f64) -> Result<(f64, f64), ProjectionError> { ... }
    fn inverse_project(
        &self,
        x: f64,
        y: f64
    ) -> Result<(f64, f64), ProjectionError> { ... }
    fn pipe_to<TARGET: Projection>(
        &self,
        target: &TARGET
    ) -> ConversionPipe<Self, TARGET> { ... }
}
Expand description

An interface for all projections included in the crate.

This trait is kept relatively simple and the most basic version of projection functions are implemented. Alternative functions for more complex types should be implemented by the user.

Required Methods§

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fn project_unchecked(&self, lon: f64, lat: f64) -> (f64, f64)

Same as Projection::project() but does not check the result.

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fn inverse_project_unchecked(&self, x: f64, y: f64) -> (f64, f64)

Same as Projection::inverse_project() but does not check the result.

Provided Methods§

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fn project(&self, lon: f64, lat: f64) -> Result<(f64, f64), ProjectionError>

Function to project geographical coordinates (in degrees) to cartographical coordinates (in meters) on a map with specified projection.

§Errors

Returns ProjectionError::ProjectionImpossible when result of projection is not finite.

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fn inverse_project(&self, x: f64, y: f64) -> Result<(f64, f64), ProjectionError>

Function to inversly project cartographical coordinates (in meters) to geographical coordinates (in degrees) on a map with specified projection.

§Errors

Returns ProjectionError::InverseProjectionImpossible when result of inverse projection is not finite.

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fn pipe_to<TARGET: Projection>( &self, target: &TARGET ) -> ConversionPipe<Self, TARGET>

Creates ConversionPipe from this projection to provided target projection.

Object Safety§

This trait is not object safe.

Implementors§