traffic-laser/src/graphic/Geometry/Line.js

import VectorType from "../enum/VectorType.js";
import VectorCategory from "../enum/VectorCategory.js";
import SelectState from "../enum/SelectState.js";
import Geometry from "./Geometry";
import Constant from "../Constant.js";
import Style from "@/graphic/CanvasStyle/index.js";
import Settings from "../Settings";

export default class Line extends Geometry {
  constructor(startId, endId, vectorId) {
    super();
    this.startId = startId;
    this.endId = endId;
    this.category = Settings.selectLineCategory;
    this.locationMode = null;
    this.color = Style.SingleArrowLine.strokeStyle; //箭头类型会用到
    this.value = null; //测量线会用到
    this.geoType = VectorType.Line;
    this.setId(vectorId);
  }

  //NormalLine,GuideLine，MeasureLine，BaseLine
  setCategory(value) {
    if (!value) {
      this.category = Settings.selectLineCategory;
    } else {
    }
    this.category = value;
  }

  getDir(pointId) {
    if (this.startId == pointId) {
      return "start";
    } else if (this.endId == pointId) {
      return "end";
    } else {
      return null;
    }
  }
}