prepareCustom.js
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import * as zrUtil from 'zrender/src/core/util';
function dataToCoordSize(dataSize, dataItem) {
// dataItem is necessary in log axis.
return zrUtil.map(['Radius', 'Angle'], function (dim, dimIdx) {
var axis = this['get' + dim + 'Axis']();
var val = dataItem[dimIdx];
var halfSize = dataSize[dimIdx] / 2;
var method = 'dataTo' + dim;
var result = axis.type === 'category'
? axis.getBandWidth()
: Math.abs(axis[method](val - halfSize) - axis[method](val + halfSize));
if (dim === 'Angle') {
result = result * Math.PI / 180;
}
return result;
}, this);
}
export default function (coordSys) {
var radiusAxis = coordSys.getRadiusAxis();
var angleAxis = coordSys.getAngleAxis();
var radius = radiusAxis.getExtent();
radius[0] > radius[1] && radius.reverse();
return {
coordSys: {
type: 'polar',
cx: coordSys.cx,
cy: coordSys.cy,
r: radius[1],
r0: radius[0]
},
api: {
coord: zrUtil.bind(function (data) {
var radius = radiusAxis.dataToRadius(data[0]);
var angle = angleAxis.dataToAngle(data[1]);
var coord = coordSys.coordToPoint([radius, angle]);
coord.push(radius, angle * Math.PI / 180);
return coord;
}),
size: zrUtil.bind(dataToCoordSize, coordSys)
}
};
}