import { PositionLog } from '../data/types/PositionLog';
import { Curve3D } from '../geometries/curve/curve-3d';
import { Vec2, Vec3 } from '../types/common';
/**
 * Interface for defining a trajectory. This can be used to work with wellbore trajectories,
 * where the measured top, termination point and length are known. The measured length should
 * be used when calculating positions of data given in MD, so that the position on the curve is
 * given by:
 *
 * @example
 * const pos = (md - trajectory.measuredTop) / trajectory.measuredLength
 *
 * @remarks
 * Avoid using the calculated length of the curve for this purpose, as this may potentially be less precise/consistant.
 * The `getPointAtDepth` function in this interface is calculated as in the above example when created using the `getTrajectory` function.
 *
 * @see {@link getTrajectory}
 * @see {@link Curve3D}
 */
export interface Trajectory {
    id: string | number;
    measuredLength: number;
    measuredTop: number;
    measuredBottom: number;
    curve: Curve3D;
    getPointAtDepth: (md: number, clamped?: boolean) => Vec3 | null;
    getPositionAtDepth: (md: number, clamped?: boolean) => number | null;
}
export type ProjectedTrajectory = {
    positions: Vec2[];
    length: number;
    top: number;
    bottom: number;
} | null;
/**
 * Creates an instance conforming to the `Trajectory` interface, given an id and a position log normalized to MSL depths.
 *
 * @see {@link Trajectory}
 */
export declare function getTrajectory(id: string, poslogMsl: PositionLog | null): Trajectory | null;
/**
 * Simplifies a linear 2d curve by comparing direction changes to a threshold value.
 * @param array input array
 * @param accessor accessor to array coordinate element
 * @param threshold threshold value (default 1e-7)
 * @returns T[] array of same type as input array
 */
export declare function simplifyCurve2D<T>(array: Array<T>, accessor?: (e: T) => Vec2, threshold?: number): T[];
/**
 * Generate a equaly spaced trajectory along XZ plane from a linear 3d curve
 * where the distance between coordinates corresponds to stepSize.
 * @param path 3d curve
 * @param stepSize distance between corrdinates in output trajectory
 * @param extension optional extension of original path (extrapolation)
 * @param minSize a minimum size of the output. If less, points will be extrapolated in both ends
 * @param defaultExtensionAngle if there is not enough deviation in the input path to determine an extrapolation angle, this angle will be used (default: 0 radians)
 * @returns 2d curve along the XZ plane
 */
export declare function getProjectedTrajectory(path: Vec3[], stepSize: number, extension?: number, minSize?: number, defaultExtensionAngle?: number): ProjectedTrajectory;