import { VecN } from '../math/vecn.js';
import type { HomogeneousProjection, Projection, ProjectionDomainHalfSpaceN, ProjectionFibreN } from './types.js';
/** Runtime capability check for custom projection implementations. */
export declare function isHomogeneousProjection(projection: Projection): projection is HomogeneousProjection;
/** Evaluates one point of an affine projection fibre. */
export declare function evaluateProjectionFibre(fibre: ProjectionFibreN, parameters: ArrayLike<number>): VecN;
/** Signed open-half-space margin; positive means strictly inside. */
export declare function projectionDomainMargin(halfSpace: ProjectionDomainHalfSpaceN, point: VecN): number;
/**
 * Tests only the fibre's declared projection domain. Callers constructing an
 * arbitrary point must separately establish that it lies on the affine flat.
 */
export declare function isPointInProjectionFibreDomain(fibre: ProjectionFibreN, point: VecN, tolerance?: number): boolean;
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