echarts prepareCustom 源码
echarts prepareCustom 代码
文件路径：/src/coord/polar/prepareCustom.ts
/*
* 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';
import Polar from './Polar';
import RadiusAxis from './RadiusAxis';
// import AngleAxis from './AngleAxis';
function dataToCoordSize(this: Polar, dataSize: number[], dataItem: number[]) {
// dataItem is necessary in log axis.
dataItem = dataItem || [0, 0];
return zrUtil.map(['Radius', 'Angle'], function (dim, dimIdx) {
const getterName = 'get' + dim + 'Axis' as 'getAngleAxis'| 'getRadiusAxis';
// TODO: TYPE Check Angle Axis
const axis = this[getterName]() as RadiusAxis;
const val = dataItem[dimIdx];
const halfSize = dataSize[dimIdx] / 2;
let result = axis.type === 'category'
? axis.getBandWidth()
: Math.abs(axis.dataToCoord(val - halfSize) - axis.dataToCoord(val + halfSize));
if (dim === 'Angle') {
result = result * Math.PI / 180;
}
return result;
}, this);
}
export default function polarPrepareCustom(coordSys: Polar) {
const radiusAxis = coordSys.getRadiusAxis();
const angleAxis = coordSys.getAngleAxis();
const 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: function (data: number[]) {
const radius = radiusAxis.dataToRadius(data[0]);
const angle = angleAxis.dataToAngle(data[1]);
const coord = coordSys.coordToPoint([radius, angle]);
coord.push(radius, angle * Math.PI / 180);
return coord;
},
size: zrUtil.bind(dataToCoordSize, coordSys)
}
};
}
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
6、 golang
-
8、 openharmony