286 lines
8.7 KiB
JavaScript
286 lines
8.7 KiB
JavaScript
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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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var zrUtil = require("zrender/lib/core/util");
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var IndicatorAxis = require("./IndicatorAxis");
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var IntervalScale = require("../../scale/Interval");
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var numberUtil = require("../../util/number");
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var _axisHelper = require("../axisHelper");
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var getScaleExtent = _axisHelper.getScaleExtent;
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var niceScaleExtent = _axisHelper.niceScaleExtent;
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var CoordinateSystem = require("../../CoordinateSystem");
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var LogScale = require("../../scale/Log");
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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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// TODO clockwise
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function Radar(radarModel, ecModel, api) {
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this._model = radarModel;
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/**
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* Radar dimensions
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* @type {Array.<string>}
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*/
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this.dimensions = [];
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this._indicatorAxes = zrUtil.map(radarModel.getIndicatorModels(), function (indicatorModel, idx) {
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var dim = 'indicator_' + idx;
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var indicatorAxis = new IndicatorAxis(dim, indicatorModel.get('axisType') === 'log' ? new LogScale() : new IntervalScale());
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indicatorAxis.name = indicatorModel.get('name'); // Inject model and axis
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indicatorAxis.model = indicatorModel;
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indicatorModel.axis = indicatorAxis;
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this.dimensions.push(dim);
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return indicatorAxis;
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}, this);
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this.resize(radarModel, api);
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/**
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* @type {number}
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* @readOnly
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*/
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this.cx;
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/**
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* @type {number}
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* @readOnly
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*/
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this.cy;
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/**
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* @type {number}
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* @readOnly
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*/
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this.r;
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/**
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* @type {number}
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* @readOnly
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*/
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this.r0;
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/**
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* @type {number}
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* @readOnly
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*/
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this.startAngle;
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}
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Radar.prototype.getIndicatorAxes = function () {
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return this._indicatorAxes;
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};
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Radar.prototype.dataToPoint = function (value, indicatorIndex) {
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var indicatorAxis = this._indicatorAxes[indicatorIndex];
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return this.coordToPoint(indicatorAxis.dataToCoord(value), indicatorIndex);
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};
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Radar.prototype.coordToPoint = function (coord, indicatorIndex) {
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var indicatorAxis = this._indicatorAxes[indicatorIndex];
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var angle = indicatorAxis.angle;
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var x = this.cx + coord * Math.cos(angle);
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var y = this.cy - coord * Math.sin(angle);
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return [x, y];
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};
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Radar.prototype.pointToData = function (pt) {
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var dx = pt[0] - this.cx;
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var dy = pt[1] - this.cy;
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var radius = Math.sqrt(dx * dx + dy * dy);
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dx /= radius;
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dy /= radius;
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var radian = Math.atan2(-dy, dx); // Find the closest angle
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// FIXME index can calculated directly
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var minRadianDiff = Infinity;
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var closestAxis;
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var closestAxisIdx = -1;
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for (var i = 0; i < this._indicatorAxes.length; i++) {
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var indicatorAxis = this._indicatorAxes[i];
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var diff = Math.abs(radian - indicatorAxis.angle);
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if (diff < minRadianDiff) {
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closestAxis = indicatorAxis;
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closestAxisIdx = i;
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minRadianDiff = diff;
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}
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}
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return [closestAxisIdx, +(closestAxis && closestAxis.coordToData(radius))];
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};
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Radar.prototype.resize = function (radarModel, api) {
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var center = radarModel.get('center');
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var viewWidth = api.getWidth();
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var viewHeight = api.getHeight();
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var viewSize = Math.min(viewWidth, viewHeight) / 2;
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this.cx = numberUtil.parsePercent(center[0], viewWidth);
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this.cy = numberUtil.parsePercent(center[1], viewHeight);
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this.startAngle = radarModel.get('startAngle') * Math.PI / 180; // radius may be single value like `20`, `'80%'`, or array like `[10, '80%']`
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var radius = radarModel.get('radius');
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if (typeof radius === 'string' || typeof radius === 'number') {
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radius = [0, radius];
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}
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this.r0 = numberUtil.parsePercent(radius[0], viewSize);
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this.r = numberUtil.parsePercent(radius[1], viewSize);
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zrUtil.each(this._indicatorAxes, function (indicatorAxis, idx) {
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indicatorAxis.setExtent(this.r0, this.r);
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var angle = this.startAngle + idx * Math.PI * 2 / this._indicatorAxes.length; // Normalize to [-PI, PI]
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angle = Math.atan2(Math.sin(angle), Math.cos(angle));
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indicatorAxis.angle = angle;
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}, this);
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};
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Radar.prototype.update = function (ecModel, api) {
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var indicatorAxes = this._indicatorAxes;
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var radarModel = this._model;
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zrUtil.each(indicatorAxes, function (indicatorAxis) {
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indicatorAxis.scale.setExtent(Infinity, -Infinity);
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});
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ecModel.eachSeriesByType('radar', function (radarSeries, idx) {
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if (radarSeries.get('coordinateSystem') !== 'radar' || ecModel.getComponent('radar', radarSeries.get('radarIndex')) !== radarModel) {
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return;
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}
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var data = radarSeries.getData();
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zrUtil.each(indicatorAxes, function (indicatorAxis) {
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indicatorAxis.scale.unionExtentFromData(data, data.mapDimension(indicatorAxis.dim));
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});
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}, this);
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var splitNumber = radarModel.get('splitNumber');
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function increaseInterval(interval) {
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var exp10 = Math.pow(10, Math.floor(Math.log(interval) / Math.LN10)); // Increase interval
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var f = interval / exp10;
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if (f === 2) {
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f = 5;
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} else {
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// f is 2 or 5
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f *= 2;
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}
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return f * exp10;
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} // Force all the axis fixing the maxSplitNumber.
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zrUtil.each(indicatorAxes, function (indicatorAxis, idx) {
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var rawExtent = getScaleExtent(indicatorAxis.scale, indicatorAxis.model).extent;
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niceScaleExtent(indicatorAxis.scale, indicatorAxis.model);
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var axisModel = indicatorAxis.model;
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var scale = indicatorAxis.scale;
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var fixedMin = axisModel.getMin();
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var fixedMax = axisModel.getMax();
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var interval = scale.getInterval();
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if (fixedMin != null && fixedMax != null) {
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// User set min, max, divide to get new interval
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scale.setExtent(+fixedMin, +fixedMax);
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scale.setInterval((fixedMax - fixedMin) / splitNumber);
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} else if (fixedMin != null) {
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var max; // User set min, expand extent on the other side
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do {
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max = fixedMin + interval * splitNumber;
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scale.setExtent(+fixedMin, max); // Interval must been set after extent
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// FIXME
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scale.setInterval(interval);
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interval = increaseInterval(interval);
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} while (max < rawExtent[1] && isFinite(max) && isFinite(rawExtent[1]));
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} else if (fixedMax != null) {
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var min; // User set min, expand extent on the other side
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do {
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min = fixedMax - interval * splitNumber;
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scale.setExtent(min, +fixedMax);
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scale.setInterval(interval);
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interval = increaseInterval(interval);
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} while (min > rawExtent[0] && isFinite(min) && isFinite(rawExtent[0]));
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} else {
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var nicedSplitNumber = scale.getTicks().length - 1;
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if (nicedSplitNumber > splitNumber) {
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interval = increaseInterval(interval);
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} // TODO
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var max = Math.ceil(rawExtent[1] / interval) * interval;
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var min = numberUtil.round(max - interval * splitNumber);
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scale.setExtent(min, max);
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scale.setInterval(interval);
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}
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});
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};
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/**
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* Radar dimensions is based on the data
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* @type {Array}
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*/
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Radar.dimensions = [];
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Radar.create = function (ecModel, api) {
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var radarList = [];
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ecModel.eachComponent('radar', function (radarModel) {
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var radar = new Radar(radarModel, ecModel, api);
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radarList.push(radar);
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radarModel.coordinateSystem = radar;
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});
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ecModel.eachSeriesByType('radar', function (radarSeries) {
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if (radarSeries.get('coordinateSystem') === 'radar') {
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// Inject coordinate system
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radarSeries.coordinateSystem = radarList[radarSeries.get('radarIndex') || 0];
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}
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});
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return radarList;
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};
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CoordinateSystem.register('radar', Radar);
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var _default = Radar;
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module.exports = _default; |