// 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);
});
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