/**
 * Vertex/corner of a `polygon` region.
 */
export interface Vertex {
    /**
     * Coordinates of the vertex.
     */
    x: number;
    /**
     * Coordinates of the vertex.
     */
    y: number;
}
/**
 * Filter for image regions. If `any`, all regions will be returned. Otherwise
 * only regions of the given shape will be returned.
 */
export declare type ShapeFilter = 'any' | 'rectangle' | 'circle' | 'polygon';
/**
 * Filter for image regions. If `any`, all regions will be returned. Otherwise
 * if `crop`, only regions with one of the cropping-related roles described
 * at https://cv.iptc.org/newscodes/imageregionrole/ will be returned.
 */
export declare type RoleFilter = 'any' | 'crop';
export declare class ImageRegion {
    /**
     * @return `true` if the region matches the given shape and role filters.
     */
    matches(shapeFilter: ShapeFilter, roleFilter: RoleFilter): boolean;
    /**
     * Identifier for the region. Unique within the image.
     */
    id: string;
    /**
     * Names for the region, possibly in multiple languages.
     */
    names: string[];
    /**
     * Region shape, can be `rectangle`, `circle` or `polygon`.
     */
    shape: string;
    /**
     * Region types, see https://cv.iptc.org/newscodes/imageregiontype/
     */
    types?: string[];
    /**
     * Region roles, see https://cv.iptc.org/newscodes/imageregionrole/
     */
    roles?: string[];
    /**
     * Unit used for `x`, `y`, `width`, `height`, `radius` and `vertices`. Can be
     * `relative` or `pixel`, see
     * https://iptc.org/std/photometadata/specification/IPTC-PhotoMetadata#boundary-measuring-unit
     */
    unit: string;
    /**
     * Original/full image width. Reference width to be used as a base for `x`,
     * `width`, `radius` and `vertices/x` when `unit` is `pixel`. See
     * https://docs.frameright.io/web-component/attribute-ref
     */
    imageWidth?: number;
    /**
     * Original/full image width. Reference width to be used as a base for `y`,
     * `height` and `vertices/y` when `unit` is `pixel`. See
     * https://docs.frameright.io/web-component/attribute-ref
     */
    imageHeight?: number;
    /**
     * Coordinates of a `rectangle` or `circle` region.
     */
    x?: number;
    /**
     * Coordinates of a `rectangle` or `circle` region.
     */
    y?: number;
    /**
     * Width of a `rectangle` region.
     */
    width?: number;
    /**
     * Height of a `rectangle` region.
     */
    height?: number;
    /**
     * Radius of a `circle` region.
     */
    radius?: number;
    /**
     * Vertices/corners of a `polygon` region.
     */
    vertices?: Vertex[];
    /**
     * Identifier for the region definition.
     */
    idcRegionDefinitionId?: string;
    /**
     * Name for the region definition.
     */
    idcRegionDefinitionName?: string;
    /**
     * See https://cv.iptc.org/newscodes/imageregionrole/
     */
    private static readonly _CROP_XML_ROLES;
    private _matchesShapeFilter;
    private _matchesRoleFilter;
}