import type { Curve } from 'flo-boolean';
/** @internal */
interface Debug {
    /** Generated by debug object for later inspection */
    elems: Elems;
    timing: Timing;
    /**
     * These functions are meant to be used in the console, e.g. in the
     * console try typing d.fs.twoProng.traceConvergence(0);
     */
    fs: {};
    directives: Directives;
}
/**
 * Elements generated during `findMats` for later inspection (only available
 * if debug has been enabled via `enableDebugForMat(true)`).
 *
 * The arrays are reset at the start of each `findMats` call and accumulate
 * over all MATs found in that call, one entry per boundary bezier curve in the
 * order the curves are encountered.
 */
interface Elems {
    /** The loose (axis-aligned) bounding box of each boundary bezier curve */
    readonly looseBoundingBoxes: number[][][];
    /** The tight (rotated) bounding box of each boundary bezier curve */
    readonly tightBoundingBoxes: number[][][];
    /** The bounding hull of each boundary bezier curve */
    readonly boundingHulls: number[][][];
    /** The curves whose end point forms a quite sharp corner with the next curve */
    readonly sharpCorners: Curve[];
    /** The curves whose end point forms a quite dull corner with the next curve */
    readonly dullCorners: Curve[];
}
/** @internal */
interface Timing {
    holeClosers: number;
    oneAnd2Prongs: number;
    threeProngs: number;
    sats: number;
    simplifyMat: number;
}
/** @internal */
interface Directives {
    stopAfterHoleClosers: boolean;
    stopAfterHoleClosersNum: number;
    stopAfterTwoProngs: boolean;
    stopAfterTwoProngsNum: number;
    stopAfterThreeProngs: boolean;
    stopAfterThreeProngsNum: number;
}
/** Returns a fresh (empty) set of debug `Elems`. */
declare function createEmptyElems(): Elems;
declare function enableDebugForMat(debugOn: boolean): void;
export type { Debug, Elems, Timing, Directives };
export { enableDebugForMat, createEmptyElems };