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