/*
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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 Axis scale
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import {__DEV__} from '../../config';
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import * as zrUtil from 'zrender/src/core/util';
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import Polar from './Polar';
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import {parsePercent} from '../../util/number';
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import {
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createScaleByModel,
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niceScaleExtent
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} from '../../coord/axisHelper';
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import CoordinateSystem from '../../CoordinateSystem';
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import {getStackedDimension} from '../../data/helper/dataStackHelper';
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import './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(polar, polarModel, api) {
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var center = polarModel.get('center');
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var width = api.getWidth();
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var height = api.getHeight();
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polar.cx = parsePercent(center[0], width);
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polar.cy = parsePercent(center[1], height);
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var radiusAxis = polar.getRadiusAxis();
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var size = Math.min(width, height) / 2;
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var radius = parsePercent(polarModel.get('radius'), size);
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radiusAxis.inverse
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? radiusAxis.setExtent(radius, 0)
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: radiusAxis.setExtent(0, radius);
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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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zrUtil.each(data.mapDimension('radius', true), function (dim) {
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radiusAxis.scale.unionExtentFromData(
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data, getStackedDimension(data, dim)
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);
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});
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zrUtil.each(data.mapDimension('angle', true), function (dim) {
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angleAxis.scale.unionExtentFromData(
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data, getStackedDimension(data, dim)
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);
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});
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}
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});
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niceScaleExtent(angleAxis.scale, angleAxis.model);
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niceScaleExtent(radiusAxis.scale, 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 = createScaleByModel(axisModel);
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axis.onBand = axisModel.get('boundaryGap') && axis.type === 'category';
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axis.inverse = axisModel.get('inverse');
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if (axisModel.mainType === 'angleAxis') {
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axis.inverse ^= axisModel.get('clockwise');
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var startAngle = axisModel.get('startAngle');
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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.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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resizePolar(polar, polarModel, api);
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polarList.push(polar);
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polarModel.coordinateSystem = polar;
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polar.model = polarModel;
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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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var polarModel = ecModel.queryComponents({
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mainType: 'polar',
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index: seriesModel.get('polarIndex'),
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id: seriesModel.get('polarId')
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})[0];
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if (__DEV__) {
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if (!polarModel) {
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throw new Error(
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'Polar "' + zrUtil.retrieve(
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seriesModel.get('polarIndex'),
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seriesModel.get('polarId'),
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0
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) + '" not found'
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);
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}
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}
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seriesModel.coordinateSystem = polarModel.coordinateSystem;
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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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CoordinateSystem.register('polar', polarCreator);
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