// Generated by dts-bundle v0.7.3

export declare enum Theme {
    Dark = "dark",
    Light = "light"
}

interface ISplineOptions {
    theme: Theme;
    gridSize: number;
    anchorSize: number;
}
export declare class ImgstrySpline extends SplineProcessor implements IDisposable {
    static getCanvas: (selector: string | HTMLCanvasElement) => HTMLCanvasElement;
    constructor(_canvas: HTMLCanvasElement, _options?: ISplineOptions);
    add: (point: IPoint) => void;
    remove: (point: IPoint | null) => void;
    dispose(): void;
}
export {};

export interface IPoint {
    x: number;
    y: number;
}
export declare class Point implements IPoint {
    x: number;
    y: number;
    constructor({ x, y }?: IPoint);
    distanceTo: (point: IPoint) => number;
}

export interface IPointResult {
    index: number;
    point: IPoint | null;
}
export declare class SplinePointSet implements Iterable<Point> {
    static get notFound(): IPointResult;
    get first(): Point;
    get length(): number;
    constructor(points?: IPoint[]);
    [Symbol.iterator](): {
        next: () => IteratorResult<Point, any>;
    };
    push(...points: IPoint[]): number;
    update(index: number, { x, y }: IPoint): IPointResult;
    find: (point: IPoint) => IPointResult;
    forEach: (predicateFn: (value: Point, index: number) => void) => void;
    remove(index: number): Point | undefined;
    indexOfClosest(coordinate: IPoint, maxRange: number, transform: (p: IPoint) => IPoint): number;
    closest: (coordinate: IPoint, maxRange: number, transform: (p: IPoint) => IPoint) => IPointResult;
}

export declare abstract class SplineProcessor {
    protected _points: SplinePointSet;
    constructor(width?: number);
    add(point: IPoint): void;
    remove(point: IPoint): void;
    lookup: () => number[];
    interpolate: (predicate: (point: IPoint) => void) => void;
    interpolateOne: (x: number) => number;
    protected _clampRatio: (ratio: number) => number;
    protected _clampPoint: (point: IPoint) => {
        x: number;
        y: number;
    };
}

export interface IDisposable {
    dispose(): void;
}

export declare class CubicInterpolationSet {
    a: number[];
    b: number[];
    c: number[];
    d: number[];
    constructor(_points: Point[]);
    at(idx: number): {
        a: number;
        b: number;
        c: number;
        d: number;
    };
}

export declare class CubicSpline {
    constructor(_points: IPoint[]);
    interpolate(x: number): number;
}