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File: vendors/echarts/src/coord/polar/polarCreator.js

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File: vendors/echarts/src/coord/polar/polarCreator.js
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Description: Auxiliary data
Class: Gentelella BladeOne
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Date: 3 years ago
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// TODO Axis scale define(function (require) { var Polar = require('./Polar'); var numberUtil = require('../../util/number'); var axisHelper = require('../../coord/axisHelper'); var niceScaleExtent = axisHelper.niceScaleExtent; // ?? PolarModel ???? require('./PolarModel'); /** * Resize method bound to the polar * @param {module:echarts/coord/polar/PolarModel} polarModel * @param {module:echarts/ExtensionAPI} api */ function resizePolar(polarModel, api) { var center = polarModel.get('center'); var radius = polarModel.get('radius'); var width = api.getWidth(); var height = api.getHeight(); var parsePercent = numberUtil.parsePercent; this.cx = parsePercent(center[0], width); this.cy = parsePercent(center[1], height); var radiusAxis = this.getRadiusAxis(); var size = Math.min(width, height) / 2; // var idx = radiusAxis.inverse ? 1 : 0; radiusAxis.setExtent(0, parsePercent(radius, size)); } /** * Update polar */ function updatePolarScale(ecModel, api) { var polar = this; var angleAxis = polar.getAngleAxis(); var radiusAxis = polar.getRadiusAxis(); // Reset scale angleAxis.scale.setExtent(Infinity, -Infinity); radiusAxis.scale.setExtent(Infinity, -Infinity); ecModel.eachSeries(function (seriesModel) { if (seriesModel.coordinateSystem === polar) { var data = seriesModel.getData(); radiusAxis.scale.unionExtent( data.getDataExtent('radius', radiusAxis.type !== 'category') ); angleAxis.scale.unionExtent( data.getDataExtent('angle', angleAxis.type !== 'category') ); } }); niceScaleExtent(angleAxis, angleAxis.model); niceScaleExtent(radiusAxis, radiusAxis.model); // Fix extent of category angle axis if (angleAxis.type === 'category' && !angleAxis.onBand) { var extent = angleAxis.getExtent(); var diff = 360 / angleAxis.scale.count(); angleAxis.inverse ? (extent[1] += diff) : (extent[1] -= diff); angleAxis.setExtent(extent[0], extent[1]); } } /** * Set common axis properties * @param {module:echarts/coord/polar/AngleAxis|module:echarts/coord/polar/RadiusAxis} * @param {module:echarts/coord/polar/AxisModel} * @inner */ function setAxis(axis, axisModel) { axis.type = axisModel.get('type'); axis.scale = axisHelper.createScaleByModel(axisModel); axis.onBand = axisModel.get('boundaryGap') && axis.type === 'category'; // FIXME Radius axis not support inverse axis if (axisModel.mainType === 'angleAxis') { var startAngle = axisModel.get('startAngle'); axis.inverse = axisModel.get('inverse') ^ axisModel.get('clockwise'); axis.setExtent(startAngle, startAngle + (axis.inverse ? -360 : 360)); } // Inject axis instance axisModel.axis = axis; axis.model = axisModel; } var polarCreator = { dimensions: Polar.prototype.dimensions, create: function (ecModel, api) { var polarList = []; ecModel.eachComponent('polar', function (polarModel, idx) { var polar = new Polar(idx); // Inject resize and update method polar.resize = resizePolar; polar.update = updatePolarScale; var radiusAxis = polar.getRadiusAxis(); var angleAxis = polar.getAngleAxis(); var radiusAxisModel = polarModel.findAxisModel('radiusAxis'); var angleAxisModel = polarModel.findAxisModel('angleAxis'); setAxis(radiusAxis, radiusAxisModel); setAxis(angleAxis, angleAxisModel); polar.resize(polarModel, api); polarList.push(polar); polarModel.coordinateSystem = polar; }); // Inject coordinateSystem to series ecModel.eachSeries(function (seriesModel) { if (seriesModel.get('coordinateSystem') === 'polar') { seriesModel.coordinateSystem = polarList[seriesModel.get('polarIndex')]; } }); return polarList; } }; require('../../CoordinateSystem').register('polar', polarCreator); });