Link连线类型
连线用于连接两个节点，可表示为链路，管线等业务对象。
TWaver HTML5中的连线类为twaver.Link，由之扩展出来的ShapeLink,这种连线是由一系列控制点决定连线走向的。
如果起始和结束点为同一节点，也就是节点A连向节点A,这种情况我们称之为自环。
普通的连线(Link)提供了几种走向类型,主要为三类：
🤔直线：直接连接起始结束节点
常用的样式有：’arc’、’triangle’、’parallel’。
😊延伸直线:先从端点的水平或者垂直方向延伸，然后再直线连接
常用的样式有: ‘flexional’, ‘flexional.horizontal’, ‘flexional.vertical’。
😉正交直线:这种连线最为丰富，可以通过一个控制点控制正交连线
常用的样式有:’orthogonal’, ‘orthogonal.vertical’, ‘orthogonal.H.V’,’orthogonal.V.H’,’extend.top’,’extend.left’,’extend.bottom’,’extend.right’。
类型不一样其实就是link.type这个属性值不一样
//方式一
link.setStyle('link.type','orthogonal');
//方式二
link.s('link.type','orthogonal');
表格展示：
1.直线
2.延伸直线
3.正交直线
属性太多，不一一尝试，需要哪一种，到之后直接看使用即可。
例子
工具js：
const twaver = require('twaver');
// 设置每个图元name的颜色
twaver.Styles.setStyle('label.color', '#ec6c00');
// 设置每个图元name2的颜色
twaver.Styles.setStyle('label2.color', '#57ab9a');
twaver.Styles.setStyle('select.color', '#ef8200');
//TWaver内部预定义六中告警级别
twaver.AlarmSeverity.CRITICAL = twaver.AlarmSeverity.add(500, 'Critical', 'C', "#FF0000");
twaver.AlarmSeverity.MAJOR = twaver.AlarmSeverity.add(400, 'Major', 'M', "#FFA000");
twaver.AlarmSeverity.MINOR = twaver.AlarmSeverity.add(300, 'Minor', 'm', "#FFFF00");
twaver.AlarmSeverity.WARNING = twaver.AlarmSeverity.add(200, 'Warning', 'W', "#00FFFF");
twaver.AlarmSeverity.INDETERMINATE = twaver.AlarmSeverity.add(100, 'Indeterminate', 'N', "#C800FF");
twaver.AlarmSeverity.CLEARED = twaver.AlarmSeverity.add(0, 'Cleared', 'R', "#00FF00");
const {
CRITICAL, MAJOR, WARNING, MINOR, INDETERMINATE, CLEARED } = twaver.AlarmSeverity
export const ALARM1 = CLEARED
export const ALARM2 = INDETERMINATE
export const ALARM3 = MINOR
export const ALARM4 = MAJOR
export const ALARM5 = CRITICAL
/**
* 创建一个dataBox容器
* 容器中可以add图元
*/
export const returnElementBoxFun = () => new twaver.ElementBox()
/**
* 创建一个画布 network对象
* @param {ElementBox} box 创建一个画布 network对象
*/
export const returnNetworkFun = (box) => new twaver.vector.Network(box)
/**
* 创建一个Group
* 用于包裹图元
*/
export const returnGroupFun = (box, obj = {
}) => {
let group = new twaver.Group(obj)
box.add(group)
return group
}
/**
* 创建一个容器dataBox和一个画布
* 并将容器实例化画布
* @returns [box,network] box network
*/
export const returnElementBoxAndNetworkFun = () => {
let box = returnElementBoxFun();
let network = returnNetworkFun(box);
return [box, network]
}
/**
* 用于创建一个节点
* @param {ElementBox} box dataBox
* @param {String} name 当前节点的name
* @param {Number} x 当前节点的x坐标
* @param {Number} y 当前节点的y坐标
* @returns {Node} Node
*/
export const returnNodeFun = (box, Obj = {
}) => {
let node = new twaver.Node(Obj);
// node.setName(name);
// node.setLocation(x, y);
box.add(node);
return node
}
/**
*
* @param {Node} node1 节点1
* @param {Node} node2 节点2
*/
export const returnLineFun = (node1, node2) => new twaver.Link(node1, node2)
/**
* 注册图片 用于设置图元的img setImage
* @param {String} url 图片 url
* @param {NetWork} svg NetWork对象
*/
export function returnRegisterImage(url, svg) {
var image = new Image();
image.src = url;
var views = arguments;
image.onload = function () {
// getImageName 获取到的图片name用做 node节点的显示img
twaver.Util.registerImage(getImageName(url), image, image.width, image.height, svg === true);
image.onload = null;
for (var i = 1; i < views.length; i++) {
var view = views[i];
if (view.invalidateElementUIs) {
view.invalidateElementUIs();
}
if (view.invalidateDisplay) {
view.invalidateDisplay();
}
}
};
// getImageName 获取到的图片name用做 node节点的显示img
const getImageName = (url) => {
var index = url.lastIndexOf('/');
var name = url;
if (index >= 0) {
name = url.substring(index + 1);
}
index = name.lastIndexOf('.');
if (index >= 0) {
name = name.substring(0, index);
}
return name;
}
}
/*
* @param {*} 告警的Id
* @param {*} 告警网元的Id
* @param {*} 告警级别
* @param {*} alarmBox 网元容器.getAlarmBox()
*/
export const returnAlarmFun = (alarmID, elementID, alarmSeverity, alarmBox) => {
var alarm = new twaver.Alarm(alarmID, elementID, alarmSeverity);
alarmBox.add(alarm);
}
/**
*
* @param {*} box 容器dataBox
* @param {*} layer layer对象
* @param {*} shape 图层的形状
* @param {*} x node点的坐标
* @param {*} y node点的坐标
* @param {*} width 图层的宽高
* @param {*} height 图层的宽高
* @param {*} fillColor 图层填充颜色
*/
/**
*
* shape
* circle 圆形
* diamond 菱形
* rectangle 长方形
*/
export const createNode = (box, layer, shape, x, y, width, height, fillColor, ) => {
var node = new twaver.Node();
node.setLayerId(layer.getId());
node.setName('layer-' + layer.getId());
node.setStyle('body.type', 'vector');
node.setStyle('vector.fill.alpha', 0.7);
node.setStyle('vector.shape', shape);
node.setSize(width, height);
node.setLocation(x, y);
node.setStyle('vector.fill.color', fillColor);
box.add(node); return node;
}
/**
*
* @param {*} table
* @param {*} name
* @param {*} propetyName
* @param {*} propertyType
* @param {*} valueType
*/
export const returnCreateColumn = (table, name, propetyName, propertyType, valueType) => {
var column = new twaver.Column(name);
column.setName(name);
column.setPropertyName(propetyName);
column.setPropertyType(propertyType);
if (valueType) {
column.setValueType(valueType);
}
table.getColumnBox().add(column);
return column;
}
export const returnRandomColor = () => {
var r = randomInt(255);
var g = randomInt(255);
var b = randomInt(255);
return '#' + formatNumber((r << 16) | (g << 8) | b);
}
function randomInt(n) {
return Math.floor(Math.random() * n);
}
function formatNumber(value) {
var result = value.toString(16);
while (result.length < 6) {
result = '0' + result; } return result;
}
react页面：
/*
* @Descripttion:
* @version:
* @Author: ZhangJunQing
* @Date: 2022-04-18 14:44:05
* @LastEditors: ZhangJunQing
* @LastEditTime: 2022-04-20 14:54:01
*/
import React, {
useEffect, useState } from 'react'
import {
returnElementBoxAndNetworkFun,
returnNodeFun,
returnLineFun,
} from './utils'
const twaver = require('twaver');
// const demo = require('demo');
const Demo = () => {
const [network, setnetwork] = useState({
})
const init = () => {
const [box, network] = returnElementBoxAndNetworkFun()
setnetwork(_ => network)
network.invalidateElementUIs();
document.getElementById("testID").appendChild(network.getView());
// 设置最初的大小
network.adjustBounds({
x: 0, y: 0, width: 1000, height: 1000 });
var from = returnNodeFun(box, {
name: 'from', location: {
x: 100, y: 100 } });
var to = returnNodeFun(box, {
name: 'to', location: {
x: 300, y: 300 } });
// 代理Link
returnCreateGroupLink(from, to, 'g1_1', 1, "#57ab9a");
returnCreateGroupLink(from, to, 'g1_2', 1, "#57ab9a");
returnCreateGroupLink(from, to, 'g1_3', 1, "#57ab9a");
// 代理Link
returnCreateGroupLink(from, to, 'g2_1', 2, "#ec6c00");
returnCreateGroupLink(from, to, 'g2_2', 2, "#ec6c00");
returnCreateGroupLink(from, to, 'g2_3', 2, "#ec6c00");
// 水平方向：orthogonal.horizontal
// 垂直方向：orthogonal.vertical
returnCreateGroupLink(from, to, 'g3_1', 1, '#0089c1', 'orthogonal.H.V');
returnCreateGroupLink(from, to, 'g3_2', 1, '#0089c1', 'orthogonal.H.V');
returnCreateGroupLink(from, to, 'g3_3', 1, '#0089c1', 'orthogonal.H.V');
returnCreateGroupLink(from, to, 'g4_1', 2, '#238475', 'orthogonal.V.H', true);
returnCreateGroupLink(from, to, 'g4_2', 2, '#238475', 'orthogonal.V.H', true);
returnCreateGroupLink(from, to, 'g4_3', 2, '#238475', 'orthogonal.V.H', true);
// returnCreateGroupLink(from, to, 'g5_1', 3, '#238475', 'orthogonal.V.H', true);
// returnCreateGroupLink(from, to, 'g5_2', 4, '#238475', 'orthogonal.V.H', true);
// returnCreateGroupLink(from, to, 'g5_3', 5, '#238475', 'orthogonal.V.H', true);
// 点击组内任何一条Link，都可以使组展开或者闭合
function returnCreateGroupLink(from, to, name, groupID, color, type, groupIndependent, gap, offset, bundleEnable) {
var link = new twaver.Link(from, to);
link.setName(name);
if (type) {
link.setStyle('link.type', type);
}
if (color) {
link.setStyle('link.color', color);
}
if (groupID >= 0) {
link.setStyle('link.bundle.id', groupID);
}
// "link.bundle.gap": 连线之间的间隙
// link.setStyle('link.bundle.gap', 40);
if (gap > 0) {
link.setStyle('link.bundle.gap', gap);
}
if (offset > 0) {
link.setStyle('link.bundle.offset', offset);
}
// "link.bundle.independent": 分组是否独立，存在多个连线分组时，是否独立绑定
// 当为true的时候 两个组互不干扰 会造成重合的效果
link.setStyle('link.bundle.independent', groupIndependent);
// true Link组为展开状态 false 闭合状态
// 最终会在代理Link展开 点击当前组任意闭合
link.setStyle('link.bundle.expanded', false);
// 是否参与绑定
link.setStyle('link.bundle.enable', bundleEnable ? bundleEnable : true);
box.add(link);
return link;
}
}
useEffect(init, [])
return (
<>
<p style={
{
fontSize: "20px", paddingLeft: "50px", poaddingTop: "50px" }}>tips: </p>
<ul style={
{
fontSize: "20px", paddingLeft: "50px" }}>
<li>连线(Link)连线类型</li>
</ul>
{
/* 画布元素需要开启定位 不然生成的图元坐标点会偏移 */}
<div id="testID" style={
{
width: "800px", height: "800px", border: "1px solid #ccc", position: "relative" }}></div>
</>
)
}
export default Demo
学习参考：TWaver Documents
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