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Co-Authored-By: 狸花猫/Claude-Qwen3.6-Plus 🐾
37 lines
1.3 KiB
JavaScript
37 lines
1.3 KiB
JavaScript
import { __extends } from "tslib";
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import { isNumber } from '@antv/util';
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import Base from '../base';
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/**
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* identity scale原则上是定义域和值域一致，scale/invert方法也是一致的
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* 参考R的实现：https://github.com/r-lib/scales/blob/master/R/pal-identity.r
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* 参考d3的实现（做了下转型）：https://github.com/d3/d3-scale/blob/master/src/identity.js
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*/
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var Identity = /** @class */ (function (_super) {
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__extends(Identity, _super);
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function Identity() {
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var _this = _super !== null && _super.apply(this, arguments) || this;
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_this.type = 'identity';
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_this.isIdentity = true;
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return _this;
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}
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Identity.prototype.calculateTicks = function () {
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return this.values;
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};
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Identity.prototype.scale = function (value) {
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// 如果传入的值不等于 identity 的值，则直接返回，用于一维图时的 dodge
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if (this.values[0] !== value && isNumber(value)) {
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return value;
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}
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return this.range[0];
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};
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Identity.prototype.invert = function (value) {
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var range = this.range;
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if (value < range[0] || value > range[1]) {
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return NaN;
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}
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return this.values[0];
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};
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return Identity;
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}(Base));
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export default Identity;
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//# sourceMappingURL=index.js.map
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