/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ /** * AUTO-GENERATED FILE. DO NOT MODIFY. */ /* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import { __extends } from "tslib"; import * as zrUtil from 'zrender/lib/core/util.js'; import Scale from './Scale.js'; import * as numberUtil from '../util/number.js'; import * as scaleHelper from './helper.js'; // Use some method of IntervalScale import IntervalScale from './Interval.js'; var scaleProto = Scale.prototype; // FIXME:TS refactor: not good to call it directly with `this`? var intervalScaleProto = IntervalScale.prototype; var roundingErrorFix = numberUtil.round; var mathFloor = Math.floor; var mathCeil = Math.ceil; var mathPow = Math.pow; var mathLog = Math.log; var LogScale = /** @class */ function (_super) { __extends(LogScale, _super); function LogScale() { var _this = _super !== null && _super.apply(this, arguments) || this; _this.type = 'log'; _this.base = 10; _this._originalScale = new IntervalScale(); // FIXME:TS actually used by `IntervalScale` _this._interval = 0; return _this; } /** * @param Whether expand the ticks to niced extent. */ LogScale.prototype.getTicks = function (expandToNicedExtent) { var originalScale = this._originalScale; var extent = this._extent; var originalExtent = originalScale.getExtent(); var ticks = intervalScaleProto.getTicks.call(this, expandToNicedExtent); return zrUtil.map(ticks, function (tick) { var val = tick.value; var powVal = numberUtil.round(mathPow(this.base, val)); // Fix #4158 powVal = val === extent[0] && this._fixMin ? fixRoundingError(powVal, originalExtent[0]) : powVal; powVal = val === extent[1] && this._fixMax ? fixRoundingError(powVal, originalExtent[1]) : powVal; return { value: powVal }; }, this); }; LogScale.prototype.setExtent = function (start, end) { var base = mathLog(this.base); // log(-Infinity) is NaN, so safe guard here start = mathLog(Math.max(0, start)) / base; end = mathLog(Math.max(0, end)) / base; intervalScaleProto.setExtent.call(this, start, end); }; /** * @return {number} end */ LogScale.prototype.getExtent = function () { var base = this.base; var extent = scaleProto.getExtent.call(this); extent[0] = mathPow(base, extent[0]); extent[1] = mathPow(base, extent[1]); // Fix #4158 var originalScale = this._originalScale; var originalExtent = originalScale.getExtent(); this._fixMin && (extent[0] = fixRoundingError(extent[0], originalExtent[0])); this._fixMax && (extent[1] = fixRoundingError(extent[1], originalExtent[1])); return extent; }; LogScale.prototype.unionExtent = function (extent) { this._originalScale.unionExtent(extent); var base = this.base; extent[0] = mathLog(extent[0]) / mathLog(base); extent[1] = mathLog(extent[1]) / mathLog(base); scaleProto.unionExtent.call(this, extent); }; LogScale.prototype.unionExtentFromData = function (data, dim) { // TODO // filter value that <= 0 this.unionExtent(data.getApproximateExtent(dim)); }; /** * Update interval and extent of intervals for nice ticks * @param approxTickNum default 10 Given approx tick number */ LogScale.prototype.calcNiceTicks = function (approxTickNum) { approxTickNum = approxTickNum || 10; var extent = this._extent; var span = extent[1] - extent[0]; if (span === Infinity || span <= 0) { return; } var interval = numberUtil.quantity(span); var err = approxTickNum / span * interval; // Filter ticks to get closer to the desired count. if (err <= 0.5) { interval *= 10; } // Interval should be integer while (!isNaN(interval) && Math.abs(interval) < 1 && Math.abs(interval) > 0) { interval *= 10; } var niceExtent = [numberUtil.round(mathCeil(extent[0] / interval) * interval), numberUtil.round(mathFloor(extent[1] / interval) * interval)]; this._interval = interval; this._niceExtent = niceExtent; }; LogScale.prototype.calcNiceExtent = function (opt) { intervalScaleProto.calcNiceExtent.call(this, opt); this._fixMin = opt.fixMin; this._fixMax = opt.fixMax; }; LogScale.prototype.parse = function (val) { return val; }; LogScale.prototype.contain = function (val) { val = mathLog(val) / mathLog(this.base); return scaleHelper.contain(val, this._extent); }; LogScale.prototype.normalize = function (val) { val = mathLog(val) / mathLog(this.base); return scaleHelper.normalize(val, this._extent); }; LogScale.prototype.scale = function (val) { val = scaleHelper.scale(val, this._extent); return mathPow(this.base, val); }; LogScale.type = 'log'; return LogScale; }(Scale); var proto = LogScale.prototype; proto.getMinorTicks = intervalScaleProto.getMinorTicks; proto.getLabel = intervalScaleProto.getLabel; function fixRoundingError(val, originalVal) { return roundingErrorFix(val, numberUtil.getPrecision(originalVal)); } Scale.registerClass(LogScale); export default LogScale;