import { TIntersectionsCameraWatcher, TIntersectionsCameraWatcherConfig, TIntersectionsCameraWatcherParams, TIntersectionsDirectionWatcher, TIntersectionsDirectionWatcherConfig, TIntersectionsDirectionWatcherParams } from '../Models';
import { TReadonlyVector2, TReadonlyVector3 } from '../../ThreeLib';
export declare function isIntersectionsDirectionWatcherConfig(config: TIntersectionsCameraWatcherConfig | TIntersectionsDirectionWatcherConfig): config is TIntersectionsDirectionWatcherConfig;
export declare function isIntersectionsCameraWatcherConfig(config: TIntersectionsCameraWatcherConfig | TIntersectionsDirectionWatcherConfig): config is TIntersectionsCameraWatcherConfig;
export declare function isIntersectionsDirectionWatcherParams(params: TIntersectionsCameraWatcherParams | TIntersectionsDirectionWatcherParams): params is TIntersectionsDirectionWatcherParams;
export declare function isIntersectionsCameraWatcherParams(params: TIntersectionsCameraWatcherParams | TIntersectionsDirectionWatcherParams): params is TIntersectionsCameraWatcherParams;
export declare function isIntersectionsDirectionWatcher(watcher: TIntersectionsCameraWatcher | TIntersectionsDirectionWatcher): watcher is TIntersectionsDirectionWatcher;
export declare function isIntersectionsCameraWatcher(watcher: TIntersectionsCameraWatcher | TIntersectionsDirectionWatcher): watcher is TIntersectionsCameraWatcher;
export declare function getChangedOriginAndDirection(tmpOrigin: Float32Array, tmpDirection: Float32Array, prevOrigin: Float32Array, prevDirection: Float32Array, origin: TReadonlyVector3, direction: TReadonlyVector3, threshold: number): Readonly<{
    origin: TReadonlyVector3;
    direction: TReadonlyVector3;
}> | undefined;
export declare function getChangedPosition(tmp: Float32Array, prev: Float32Array, position: TReadonlyVector2, threshold: number): Readonly<{
    position: TReadonlyVector2;
}> | undefined;