import { Group, Mesh, Vector3 } from "three";
/**
 * Names for default handles
 */
export declare enum DEFAULT_HANDLE_GROUP_NAME {
    /**
     * name for default translation handle along the +ve x-axis
     */
    XPT = "xpt_handle",
    /**
     * name for default translation handle along the +ve y-axis
     */
    YPT = "ypt_handle",
    /**
     * name for default translation handle along the +ve z-axis
     */
    ZPT = "zpt_handle",
    /**
     * name for default translation handle along the -ve x-axis
     */
    XNT = "xnt_handle",
    /**
     * name for default translation handle along the -ve y-axis
     */
    YNT = "ynt_handle",
    /**
     * name for default translation handle along the -ve z-axis
     */
    ZNT = "znt_handle",
    /**
     * name for default rotation handle along the x-axis
     */
    XR = "xr_handle",
    /**
     * name for default rotation handle along the y-axis
     */
    YR = "yr_handle",
    /**
     * name for default rotation handle along the z-axis
     */
    ZR = "zr_handle",
    /**
     * name for default rotation handle in the eye-plane
     */
    ER = "er_handle",
    /**
     * name for default translation handle in the eye-plane
     */
    PICK = "pick_handle",
    /**
     * name for default translation handle in the xy plane
     */
    PICK_PLANE_XY = "pick_plane_xy_handle",
    /**
     * name for default translation handle in the yz plane
     */
    PICK_PLANE_YZ = "pick_plane_yz_handle",
    /**
     * name for default translation handle in the zx plane
     */
    PICK_PLANE_ZX = "pick_plane_zx_handle"
}
/**
 * Base class for all handles
 * @noInheritDoc
 */
export declare abstract class HandleGroup extends Group {
    /**
     * returns an array of all the interactive objects that form a handle;
     * note that a handle can have non-interactive objects as well.
     */
    abstract getInteractiveObjects(): Mesh[];
    /**
     * sets the color for the handle; this may involve setting colors for multiple
     * constituent meshes that form the handle (interactive or non-interactive)
     * @param color - hex code for the color
     */
    abstract setColor(color: string): void;
}
/**
 * This class can be extended to create custom translation handles.
 * It requires setting the properties `parallel` and `up`.
 */
export declare abstract class TranslationGroup extends HandleGroup {
    /**
     * This is a unit vector that runs parallel to the direction of the translation handle.
     * For example, in case of [[Controls.translationXP]], it is
     * `THREE.Vector3(1,0,0)` (along the x-axis).
     */
    abstract parallel: Vector3;
    /**
     * This is a unit vector that runs perpendicular to the direction of the translation handles.
     * For example, in case of [[Controls.translationXP]], it is
     * `THREE.Vector3(0,1,0)` (along the y-axis).
     */
    up: Vector3;
}
/**
 * This class can be extended to create custom rotation handles.
 * It requires setting the property `up`.
 */
export declare abstract class RotationGroup extends HandleGroup {
    /**
     * This is a unit vector that runs along the axis of the rotation handles.
     * For example, in case of [[Controls.rotationX]], it is
     * `THREE.Vector3(1,0,0)` (along the x-axis).
     */
    up: Vector3;
}
/**
 * This class can be extended to create custom pick handle (translates in eye-plane).
 */
export declare abstract class PickGroup extends HandleGroup {
}
/**
 * This class can be extended to create custom pick plane handles.
 * It requires setting the property `up`.
 */
export declare abstract class PickPlaneGroup extends HandleGroup {
    /**
     * This is a unit vector that is perpendicular to the plane handles.
     * For example, in case of [[Controls.pickPlaneXY]], it is
     * `THREE.Vector3(0,0,1)` (along the z-axis).
     */
    up: Vector3;
}
export type IHandle = RotationGroup | TranslationGroup | PickGroup | PickPlaneGroup;