import type { HomogeneousProjection, HomogeneousProjectionPointN, ProjectionFibreN } from './types.js';
export interface OrthographicProjectionOptions {
    fromDim: number;
}
/**
 * Orthographic projection ℝⁿ → ℝ³: keeps the first three coordinates and
 * drops the rest. The simplest projection mode — useful for debugging,
 * CAD-like views, and as a reference against which other modes are tested.
 */
export declare class OrthographicProjection implements HomogeneousProjection {
    readonly fromDim: number;
    constructor({ fromDim }: OrthographicProjectionOptions);
    projectPoint(p: ArrayLike<number>): [number, number, number];
    projectPositions(src: Float64Array, count: number, dst: Float32Array): void;
    /** Exact row-major homogeneous matrix `[x0,x1,x2,1]`. */
    homogeneousMatrix(): Float64Array;
    projectHomogeneousPoint(point: ArrayLike<number>): HomogeneousProjectionPointN;
    projectHomogeneousPositions(src: Float64Array, count: number, dst: Float64Array, validity?: Uint8Array): void;
    /** Exact `(n - 3)`-flat obtained by restoring the dropped coordinates. */
    inverseFibre(point: ArrayLike<number>): ProjectionFibreN;
}
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