traffic-laser/src/graphic/Service/ControlPointService.js

import ControlPoint from "../Geometry/ControlPoint.js";
import { dataService } from "./DataService.js";
import { mathUtil } from "../Util/MathUtil";
import { edgeService } from "./EdgeService.js";

export default class ControlPointService {
  constructor() {}

  //暂时没有添加到vectorData里
  create(position, vectorId) {
    let controlPoint = new ControlPoint(position, vectorId);
    return controlPoint;
  }

  update(realRosition, point1, point2, edge1, edge2, dir1, dir2) {
    let controlPoint = dataService.getControlPoint(
      edge1.vectorId,
      edge2.vectorId
    );
    const line1 = edgeService.getLine(edge1);
    const line2 = edgeService.getLine(edge2);
    let position = mathUtil.getPositionForExtendedLine(point1, point2);
    //更新edge的坐标
    let position1 = mathUtil.getJoinLinePoint(position, line1);
    let position2 = mathUtil.getJoinLinePoint(position, line2);
    //可能position1或者position2不在对应的edge上，这时候需要调换顺序
    if (
      !mathUtil.isContainForSegment(position1, edge1.start, edge1.end) ||
      !mathUtil.isContainForSegment(position2, edge2.start, edge2.end)
    ) {
      position = mathUtil.getPositionForExtendedLine(point2, point1);
      position1 = mathUtil.getJoinLinePoint(position, line1);
      position2 = mathUtil.getJoinLinePoint(position, line2);
    }

    // const realRosition = mathUtil.getPositionForExtendedLine(point2, point1);
    // const realRosition = {
    //   x: (point1.x + point2.x) / 2,
    //   y: (point1.y + point2.y) / 2,
    // };
    if (controlPoint == null) {
      //新建控制点
      controlPoint = this.create(realRosition);
      //设置控制点的信息
      controlPoint.setEdgeInfo(edge1.vectorId, dir1, edge2.vectorId, dir2);
      //添加到数据集里
      dataService.addControlPoint(controlPoint);
    }
    //更新控制点坐标
    else {
      controlPoint.setPosition(realRosition);
    }
    edge1.setPosition(position1, dir1);
    edge2.setPosition(position2, dir2);
  }
}

const controlPointService = new ControlPointService();
export { controlPointService };