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58 lines
1.8 KiB
58 lines
1.8 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Point = void 0;
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const band_1 = require("./band");
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const ordinal_1 = require("./ordinal");
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/**
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* Point 比例尺
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*
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* 一种特殊的 band scale，它的 bandWidth 恒为 0。
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*
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* 由于部分选项较为抽象，见下图描述：
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*
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* PO = Padding = PaddingInner
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* domain = ["A", "B", "C"]
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*
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* |<------------------------------------------- range ------------------------------------------->|
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* | | | | |
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* |<--step*PO-->|<--------------step------------->|<--------------step------------->|<--step*PO-->|
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* | | | | |
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* | A B C |
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* |-----------------------------------------------------------------------------------------------|
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*
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* 性能方便较 d3 快出 8 - 9 倍
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*/
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class Point extends band_1.Band {
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// 覆盖默认配置
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getDefaultOptions() {
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return {
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domain: [],
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range: [0, 1],
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align: 0.5,
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round: false,
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padding: 0,
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unknown: ordinal_1.defaultUnknown,
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paddingInner: 1,
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paddingOuter: 0,
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};
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}
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// 能接受的参数只是 PointOptions，不能有 paddingInner 这些属性
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constructor(options) {
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super(options);
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}
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// Point 的 paddingInner 只能是1，不能被覆盖
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getPaddingInner() {
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return 1;
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}
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clone() {
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return new Point(this.options);
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}
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update(options) {
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super.update(options);
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}
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getPaddingOuter() {
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return this.options.padding;
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}
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}
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exports.Point = Point;
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//# sourceMappingURL=point.js.map
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