import { type IDomEventListener } from "@shapediver/viewer.shared.services";
import { type IInteractionManager } from "./IInteractionManager";
export declare enum INTERACTION_STATE {
    /** The event enum for mousedown and touchstart. */
    DOWN = "down",
    /** The event enum for mousemove and touchmove. */
    MOVE = "move",
    /** The event enum for mouseup, mouseout, touchcancel and touchup. */
    END = "end",
    /** The event enum for mouseout and touchcancel. */
    OUT = "out",
    /** The event enum for mouseup and touchup. */
    UP = "up"
}
export interface IInteractionEngine extends IDomEventListener {
    /**
     * All currently registered interaction managers with their token as a key.
     */
    readonly managers: {
        [key: string]: IInteractionManager;
    };
    /**
     * The current state of the interaction engine.
     */
    closed: boolean;
    /**
     * The opacity threshold that used to for intersection. (Default: 0)
     * If the object is equal or below the threshold, it is not intersected anymore.
     *
     * Example: If the value is set to 0.25, all objects that have an opacity of 0.25 or lower and not intersectable.
     */
    intersectionOpacity: number;
    /**
     * Add a new interaction manager to the selection of interaction managers.
     * This manager will be fed with all onDown, onMove and onEnd events by the InteractionEngine.
     * The token that is return can be used to remove this interaction manager.
     *
     * @param manager
     * @returns
     */
    addInteractionManager(manager: IInteractionManager): string;
    /**
     * Remove an interaction manager with the token returned when adding it.
     *
     * @param token
     * @returns
     */
    removeInteractionManager(token: string): boolean;
    /**
     * Closes the interaction engine and removes all managers that where registered.
     */
    close(): void;
}
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