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28 lines
931 B
28 lines
931 B
4 months ago
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import { ConstantOptions, Domain, Range } from '../types';
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import { Base } from './base';
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export declare class Constant extends Base<ConstantOptions> {
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/**
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* 返回需要覆盖的默认选项
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* @returns 需要覆盖的默认选项
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*/
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protected getDefaultOptions(): ConstantOptions;
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/**
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* 输入和输出满足：y = b，其中 b 是一个常量，是 options.range 的第一个元素
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* @param _ 输入值
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* @returns 输出值（常量）
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*/
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map(_: Domain<ConstantOptions>): any;
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/**
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* 如果 x 是该比例尺的常量（x === b），返回输入值的范围（即定义域），否者返回 []
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* @param x 输出值 (常量）
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* @returns 定义域
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*/
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invert(x: Range<ConstantOptions>): any[];
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getTicks(): number[];
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/**
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* 克隆 Constant Scale
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* @returns 拥有相同选项且独立的 Constant Scale
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*/
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clone(): Constant;
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}
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