/**
 * 比例尺工具
 * 用于替代 d3-scale 的功能
 */
export interface ScaleLinear {
    (x: number): number;
    domain(): number[];
    domain(domain: number[]): ScaleLinear;
    range(): number[];
    range(range: number[]): ScaleLinear;
    invert(y: number): number;
    ticks(count?: number): number[];
    nice(count?: number): ScaleLinear;
    clamp(): boolean;
    clamp(clamp: boolean): ScaleLinear;
}
export declare function scaleLinear(): ScaleLinear;
export interface ScalePow extends ScaleLinear {
    exponent(): number;
    exponent(k: number): ScalePow;
}
export declare function scalePow(): ScalePow;
export interface ScaleLog extends ScaleLinear {
    base(): number;
    base(b: number): ScaleLog;
}
export declare function scaleLog(): ScaleLog;
export interface ScaleOrdinal<T = any> {
    (x: any): T;
    domain(): any[];
    domain(domain: any[]): ScaleOrdinal<T>;
    range(): T[];
    range(range: T[]): ScaleOrdinal<T>;
    unknown(value: T): ScaleOrdinal<T>;
}
export declare function scaleOrdinal<T = any>(range?: T[]): ScaleOrdinal<T>;
export interface ScaleQuantize {
    (x: number): any;
    domain(): number[];
    domain(domain: number[]): ScaleQuantize;
    range(): any[];
    range(range: any[]): ScaleQuantize;
    invertExtent(y: any): [number, number];
}
export declare function scaleQuantize(): ScaleQuantize;
export interface ScaleQuantile {
    (x: number): any;
    domain(): number[];
    domain(domain: number[]): ScaleQuantile;
    range(): any[];
    range(range: any[]): ScaleQuantile;
    invertExtent(y: any): [number, number];
    quantiles(): number[];
}
export declare function scaleQuantile(): ScaleQuantile;
export interface ScaleThreshold {
    (x: number): any;
    domain(): number[];
    domain(domain: number[]): ScaleThreshold;
    range(): any[];
    range(range: any[]): ScaleThreshold;
    invertExtent(y: any): [number | undefined, number | undefined];
}
export declare function scaleThreshold(): ScaleThreshold;
export interface ScaleSequential {
    (x: number): any;
    domain(): number[];
    domain(domain: number[]): ScaleSequential;
    interpolator(): (t: number) => any;
    interpolator(interpolator: (t: number) => any): ScaleSequential;
    clamp(): boolean;
    clamp(clamp: boolean): ScaleSequential;
}
export declare function scaleSequential(): ScaleSequential;
export interface ScaleDiverging {
    (x: number): any;
    domain(): number[];
    domain(domain: number[]): ScaleDiverging;
    interpolator(): (t: number) => any;
    interpolator(interpolator: (t: number) => any): ScaleDiverging;
    clamp(): boolean;
    clamp(clamp: boolean): ScaleDiverging;
}
export declare function scaleDiverging(): ScaleDiverging;
export interface ScaleTime extends ScaleLinear {
}
export declare function scaleTime(): ScaleTime;