echarts graphHelper 源码
echarts graphHelper 代码
文件路径：/src/chart/graph/graphHelper.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 GraphSeriesModel from './GraphSeries';
import View from '../../coord/View';
import { GraphNode } from '../../data/Graph';
export function getNodeGlobalScale(seriesModel: GraphSeriesModel) {
const coordSys = seriesModel.coordinateSystem as View;
if (coordSys.type !== 'view') {
return 1;
}
const nodeScaleRatio = seriesModel.option.nodeScaleRatio;
const groupZoom = coordSys.scaleX;
// Scale node when zoom changes
const roamZoom = coordSys.getZoom();
const nodeScale = (roamZoom - 1) * nodeScaleRatio + 1;
return nodeScale / groupZoom;
}
export function getSymbolSize(node: GraphNode) {
let symbolSize = node.getVisual('symbolSize');
if (symbolSize instanceof Array) {
symbolSize = (symbolSize[0] + symbolSize[1]) / 2;
}
return +symbolSize;
}
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