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Co-Authored-By: 狸花猫/Claude-Qwen3.6-Plus 🐾
78 lines
2.5 KiB
JavaScript
78 lines
2.5 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var tslib_1 = require("tslib");
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var util_1 = require("@antv/util");
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var base_1 = require("./base");
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/**
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* 分段度量
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*/
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var Quantize = /** @class */ (function (_super) {
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tslib_1.__extends(Quantize, _super);
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function Quantize() {
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var _this = _super !== null && _super.apply(this, arguments) || this;
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_this.type = 'quantize';
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return _this;
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}
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Quantize.prototype.invert = function (value) {
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var ticks = this.ticks;
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var length = ticks.length;
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var percent = this.getInvertPercent(value);
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var minIndex = Math.floor(percent * (length - 1));
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// 最后一个
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if (minIndex >= length - 1) {
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return util_1.last(ticks);
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}
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// 超出左边界， 则取第一个
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if (minIndex < 0) {
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return util_1.head(ticks);
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}
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var minTick = ticks[minIndex];
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var nextTick = ticks[minIndex + 1];
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// 比当前值小的 tick 在度量上的占比
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var minIndexPercent = minIndex / (length - 1);
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var maxIndexPercent = (minIndex + 1) / (length - 1);
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return minTick + (percent - minIndexPercent) / (maxIndexPercent - minIndexPercent) * (nextTick - minTick);
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};
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Quantize.prototype.initCfg = function () {
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this.tickMethod = 'r-pretty';
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this.tickCount = 5;
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this.nice = true;
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};
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Quantize.prototype.calculateTicks = function () {
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var ticks = _super.prototype.calculateTicks.call(this);
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if (!this.nice) { // 如果 nice = false ,补充 min, max
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if (util_1.last(ticks) !== this.max) {
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ticks.push(this.max);
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}
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if (util_1.head(ticks) !== this.min) {
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ticks.unshift(this.min);
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}
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}
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return ticks;
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};
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// 计算当前值在刻度中的占比
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Quantize.prototype.getScalePercent = function (value) {
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var ticks = this.ticks;
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// 超出左边界
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if (value < util_1.head(ticks)) {
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return 0;
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}
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// 超出右边界
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if (value > util_1.last(ticks)) {
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return 1;
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}
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var minIndex = 0;
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util_1.each(ticks, function (tick, index) {
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if (value >= tick) {
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minIndex = index;
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}
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else {
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return false;
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}
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});
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return minIndex / (ticks.length - 1);
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};
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return Quantize;
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}(base_1.default));
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exports.default = Quantize;
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//# sourceMappingURL=quantize.js.map
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