poc-igeom-karla/src/app/components/line-segment-component/drawers/line-segment-drawer.js

import { Drawer } from "../../../core/drawers/drawer";
import { ELEMENTS_CLASS } from "../../../core/enums/elements-class-enum";
import { label as Label } from "../../../component-registry/label";
import { DrawerAggregator } from "../../../core/drawers/drawer-aggregator";
import { selector as Selector } from "../../../core/application/selector";
import { LineSegmentModel } from "../models/line-segment-model";
export class LineSegmentDrawer extends Drawer {
  static FIRST_POINT() {
    return "FIRST_POINT";
  }
  static SECOND_POINT() {
    return "SECOND_POINT";
  }
  constructor() {
    super();
    this.pointA;
    this.pointB;
    this.label;
    this.states = [
      LineSegmentDrawer.FIRST_POINT,
      LineSegmentDrawer.SECOND_POINT
    ];
    this.lineSegment;
  }
  setPointA(point) {
    this.pointA = point;
  }
  setPointB(point) {
    this.pointB = point;
  }
  draw() {
    const points = Selector.getSelectedPoints();
    const aggregators = Selector.getSelectedPointsAggregators();
    if (points == undefined || points.length < 1) return;
    this.setPointA(points[0]);
    this.setPointB(points[1]);
    this.label = Label.draw();
    this.lineSegment = new LineSegmentModel(
      this.pointA,
      this.pointB,
      this.label
    );
    const konvaObject = LineSegmentDrawer.getKonvaLine(
      this.pointA,
      this.pointB
    );
    super.setKonvaObject(konvaObject);
    const aggregator = new DrawerAggregator(
      this,
      this.lineSegment,
      this.konvaObject,
      ELEMENTS_CLASS.LINE_SEGMENT
    );
    super.addAggregator(aggregator);
    aggregators[1].addAggregator(aggregator);
    aggregators[0].addAggregator(aggregator);
    Drawer.drawObject(this.konvaObject);
    this.konvaObject.zIndex(0);
    super.batchDraw();
  }

  update(aggregator) {
    const pointA = aggregator.genericObject.pointA;
    const pointB = aggregator.genericObject.pointB;
    aggregator.konvaObject.points([
      pointA.posX,
      pointA.posY,
      pointB.posX,
      pointB.posY
    ]);
    super.batchDraw();
  }

  static getKonvaLine(pointA, pointB, useLabel) {
    const points = [pointA.posX, pointA.posY, pointB.posX, pointB.posY];
    const line = new Konva.Line({
      points: points,
      stroke: "grey",
      strokeWidth: 2,
      lineJoin: "round",
      draggable: false,
      strokeScaleEnabled: false,
      class: ELEMENTS_CLASS.LINE_SEGMENT,
      connections: [],
      index: 0
    });
    return line;
  }

  static drawKonvaLine(pointA, pointB) {
    const line = LineSegmentDrawer.getKonvaLine(pointA, pointB);
  }
}