import type * as Template from '../serial/serial-types';
import { RectangleSprite } from '../controllers/sprites/Rectangle';
import { OvalSprite } from '../controllers/sprites/Oval';
import { PolygonSprite } from '../controllers/sprites/Polygon';
import { CornerOptions } from '../controllers/sprites/Rectangle';
import { PathCommand } from '../idml';
import { Box, PathFeature, SurfaceInput } from '../serial/builders';
export declare function cornerRadii(corners: CornerOptions | undefined, _box: Box): [number, number, number, number];
export declare function cornersAreSimple(corners: CornerOptions | undefined): boolean;
export declare function pathFeatures(paths: PathCommand[][]): PathFeature[];
export declare const MASK_FILL: SurfaceInput;
/**
 * The frame's outline as a Bluepic element in frame-local coords (identity
 * transform), painted with `surface` and tagged `${id}-${suffix}`. Shared by
 * both the white mask-clip shape and the frame's own filled background.
 */
export declare function frameShape(frame: RectangleSprite | OvalSprite | PolygonSprite, suffix: string, surface: SurfaceInput): Template.Element;
/** The frame's clip shape, in frame-local coords with identity transform. */
export declare function frameOutlineShape(frame: RectangleSprite | OvalSprite | PolygonSprite): Template.Element;
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