import type { TCameraAnimationOptions, TCameraTarget } from '@mappedin/mappedin-js';
import type { FollowCameraOptions } from '../types';
import type { ContainerDimensions, FollowMode, NavigationCoordinate, ScreenCoordinate } from './types';
/**
 * Calculates the Euclidean distance between two screen coordinates.
 * @param point1 First screen coordinate
 * @param point2 Second screen coordinate
 * @returns Distance in pixels
 */
export declare function calculatePixelDistance(point1: ScreenCoordinate, point2: ScreenCoordinate): number;
/**
 * Calculates the center point of a container.
 * @param dimensions Container width and height
 * @returns Screen coordinate at center
 */
export declare function getContainerCenter(dimensions: ContainerDimensions): ScreenCoordinate;
/**
 * Calculates pixel distance from a point to the center of a container.
 * @param point Screen coordinate to measure from
 * @param containerDimensions Container width and height
 * @returns Distance in pixels, or undefined if container has no size
 */
export declare function calculateDistanceFromCenter(point: ScreenCoordinate, containerDimensions: ContainerDimensions): number | undefined;
/**
 * Calculates the pan-exit threshold in pixels for a given container size.
 * @param containerDimensions Container width and height in CSS pixels
 * @returns Threshold in pixels (clamped)
 */
export declare function computePanExitThresholdPixels(containerDimensions: ContainerDimensions): number;
/**
 * Determines if a pan distance exceeds the threshold for exiting follow mode.
 * @param pixelDistance Distance in pixels from blue dot to screen center
 * @param thresholdPixels Pixel threshold (usually from {@link computePanExitThresholdPixels})
 * @returns True if distance exceeds threshold
 */
export declare function shouldExitFollowMode(pixelDistance: number | undefined, thresholdPixels: number): boolean;
/**
 * Creates the default camera target for follow mode.
 * @param mode The follow mode
 * @param options Optional camera options
 * @returns Camera target with defaults applied
 */
export declare function createDefaultCameraTarget(mode: FollowMode, options?: FollowCameraOptions): TCameraTarget;
/**
 * Creates camera animation options with defaults.
 * @param options Optional camera options
 * @returns Animation options with defaults applied
 */
export declare function createDefaultCameraOptions(options?: FollowCameraOptions): TCameraAnimationOptions;
/**
 * Simplifies navigation path coordinates for efficient bearing calculations.
 * @param coordinates Array of navigation coordinates
 * @param currentFloorId ID of the current floor to filter by
 * @param tolerance Simplification tolerance (default 0.00001)
 * @returns Simplified path as array of [longitude, latitude] pairs
 */
export declare function simplifyPathCoordinates(coordinates: NavigationCoordinate[], currentFloorId: string, tolerance?: number): number[][];
/**
 * Computes the bearing along a navigation path at a given position.
 * @param simplifiedPath Simplified path as [longitude, latitude] pairs
 * @param position Current position as [longitude, latitude]
 * @returns Bearing in degrees, or undefined if cannot be computed
 */
export declare function computePathBearing(simplifiedPath: number[][], position: [number, number]): number | undefined;
/**
 * Computes the bearing for follow mode based on the current mode and position data.
 * @param mode Current follow mode
 * @param heading Device heading (for position-and-heading mode)
 * @param customBearing Custom bearing from options (for position-only mode)
 * @param simplifiedPath Simplified navigation path (for position-and-path-direction mode)
 * @param position Current position as [longitude, latitude]
 * @returns Bearing in degrees, or undefined to keep current bearing
 */
export declare function computeFollowBearing(mode: FollowMode, heading: number | null | undefined, customBearing: number | undefined, simplifiedPath: number[][] | undefined, position: [number, number]): number | undefined;