sankeyVisual.js
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var VisualMapping = require("../../visual/VisualMapping");
var zrUtil = require("zrender/lib/core/util");
/*
* 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.
*/
/**
* @file Visual encoding for sankey view
* @author Deqing Li(annong035@gmail.com)
*/
function _default(ecModel, payload) {
ecModel.eachSeriesByType('sankey', function (seriesModel) {
var graph = seriesModel.getGraph();
var nodes = graph.nodes;
if (nodes.length) {
var minValue = Infinity;
var maxValue = -Infinity;
zrUtil.each(nodes, function (node) {
var nodeValue = node.getLayout().value;
if (nodeValue < minValue) {
minValue = nodeValue;
}
if (nodeValue > maxValue) {
maxValue = nodeValue;
}
});
zrUtil.each(nodes, function (node) {
var mapping = new VisualMapping({
type: 'color',
mappingMethod: 'linear',
dataExtent: [minValue, maxValue],
visual: seriesModel.get('color')
});
var mapValueToColor = mapping.mapValueToVisual(node.getLayout().value);
node.setVisual('color', mapValueToColor); // If set itemStyle.normal.color
var itemModel = node.getModel();
var customColor = itemModel.get('itemStyle.color');
if (customColor != null) {
node.setVisual('color', customColor);
}
});
}
});
}
module.exports = _default;