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