You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.7 KiB
56 lines
1.7 KiB
"use strict";
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.Constant = void 0;
|
|
const util_1 = require("@antv/util");
|
|
const d3_ticks_1 = require("../tick-methods/d3-ticks");
|
|
const base_1 = require("./base");
|
|
class Constant extends base_1.Base {
|
|
/**
|
|
* 返回需要覆盖的默认选项
|
|
* @returns 需要覆盖的默认选项
|
|
*/
|
|
getDefaultOptions() {
|
|
return {
|
|
range: [0],
|
|
domain: [0, 1],
|
|
unknown: undefined,
|
|
tickCount: 5,
|
|
tickMethod: d3_ticks_1.d3Ticks,
|
|
};
|
|
}
|
|
/**
|
|
* 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
|
|
* @param _ 输入值
|
|
* @returns 输出值（常量）
|
|
*/
|
|
// eslint-disable-next-line @typescript-eslint/no-unused-vars
|
|
map(_) {
|
|
const [v] = this.options.range;
|
|
return v !== undefined ? v : this.options.unknown;
|
|
}
|
|
/**
|
|
* 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 []
|
|
* @param x 输出值 (常量）
|
|
* @returns 定义域
|
|
*/
|
|
invert(x) {
|
|
const [v] = this.options.range;
|
|
return x === v && v !== undefined ? this.options.domain : [];
|
|
}
|
|
getTicks() {
|
|
const { tickMethod, domain, tickCount } = this.options;
|
|
const [a, b] = domain;
|
|
if (!(0, util_1.isNumber)(a) || !(0, util_1.isNumber)(b))
|
|
return [];
|
|
return tickMethod(a, b, tickCount);
|
|
}
|
|
/**
|
|
* 克隆 Constant Scale
|
|
* @returns 拥有相同选项且独立的 Constant Scale
|
|
*/
|
|
clone() {
|
|
return new Constant(this.options);
|
|
}
|
|
}
|
|
exports.Constant = Constant;
|
|
//# sourceMappingURL=constant.js.map
|