Enum SelectionPolicy 

pub enum SelectionPolicy {
    BestAvailable,
    RequireGrids,
    RequireExactAreaMatch,
    AllowApproximateHelmertFallback,
    Operation(CoordinateOperationId),
}

Variants

BestAvailable

Select the best supported registry or exact synthetic operation.

This default policy does not synthesize approximate Helmert fallbacks. Use SelectionOptions::allow_approximate_helmert_fallback when a last-resort approximate datum shift is acceptable.

RequireGrids

Require a grid-backed datum operation whenever a datum shift is needed.

RequireExactAreaMatch

Require selected registry operations to match the configured area of interest.

AllowApproximateHelmertFallback

Permit a synthetic approximate Helmert operation when no better supported operation is available.

Operation(CoordinateOperationId)

Select one explicit registry operation by id.

Trait Implementations

impl Clone for SelectionPolicy

fn clone(&self) -> SelectionPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectionPolicy

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

Formats the value using the given formatter.