zl2fxy commented on issue #6811:
URL: https://github.com/apache/echarts/issues/6811#issuecomment-2580119241
function handlerEdges(uniqueArray) {
var groupBy = {};
let groupByList = Array.from(new Set(uniqueArray.map(x =>
x.qweGroupBy)));
groupByList.forEach(item => {
let key = item;
if (!groupBy[key]) {
groupBy[key] = [];
};
//找自身和对向数据
let filters = uniqueArray.filter(x => (x.qweGroupBy == key ||
x.qweGroupByFaXiang == key) && x.WC == false);
groupBy[key] = groupBy[key].concat(filters);
//找完了标记，下次不能被使用
filters.forEach(filterItem => {
uniqueArray.find(x => x.qweUuid == filterItem.qweUuid).WC = true;
});
});
let shuju = [];
//开始算曲率
for (const [key, value] of Object.entries(groupBy)) {
let length = value.length;
//判断是否有对向数据
let hasDuiXiang = Array.from(new Set(value.map(x =>
x.qweGroupBy))).length > 1;
if (hasDuiXiang) {
var zhengXiangs = value.filter(x => x.qweGroupBy == key);
var fanXiangs = value.filter(x => x.qweGroupByFaXiang == key);
//加成系数，如果两边数量相等, 就对称，不相等就从最中间线开始
var jiachengXiShu = zhengXiangs.length == fanXiangs.length ? 1 :
0;
zhengXiangs.forEach((item, index) => {
item.curveness = (index + jiachengXiShu) * 0.1;
item.lineStyle = {
width: 1,
color: 'source',
curveness: item.curveness
};
shuju.push(item);
});
fanXiangs.forEach((item, index) => {
item.curveness = (index + 1) * 0.1;
item.lineStyle = {
width: 1,
color: 'source',
curveness: item.curveness
};
shuju.push(item);
});
}
else {
// 求商
let quotient = Math.floor(length / 2);
let remainder = length % 2;
if (remainder == 0) {
value.forEach((item, index) => {
if (index < quotient) {
item.curveness = (index + 1) * 0.1;
}
else {
item.curveness = -(((index - quotient) + 1) * 0.1);
}
item.lineStyle = {
width: 1,
color: 'source',
curveness: item.curveness
};
if (item.to == item.form) {
item.lineStyle.curveness = 0.8
}
shuju.push(item);
})
}
else {
value.forEach((item, index) => {
if (index < quotient) {
item.curveness = (index + 1) * 0.1;
}
else if (index == quotient) {
item.curveness = 0;
}
else {
item.curveness = -(((index - quotient) + 1) * 0.1);
}
item.lineStyle = {
width: 1,
color: 'source',
curveness: item.curveness
};
if (item.to == item.form) {
item.lineStyle.curveness = 0.8
}
shuju.push(item);
})
}
}
}
return shuju;
}
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