// import { mathUtil } from "../Util/MathUtil.js/index.js";
// import SingleDoor from "../Geometry/SingleDoor.js";
// import DoubleDoor from "../Geometry/DoubleDoor.js";
// import SlideDoor from "../Geometry/SlideDoor.js";
// import SingleWindow from "../Geometry/SingleWindow.js";
// import FrenchWindow from "../Geometry/FrenchWindow.js";
// import BayWindow from "../Geometry/BayWindow.js";
// import Pass from "../Geometry/Pass.js";
import { coordinate } from "../Coordinate";
import { dataService } from "./DataService.js";
// import { wallService } from "./WallService.js";
import VectorType from "../enum/VectorType.js";

import Constant from "../Constant";
// import { moveSymbol } from "../Controls/MoveSymbol.js";
import { stateService } from "./StateService.js";

export class SymbolService {
  constructor() {
    this.enterImg = null;
  }

  // 新建symbol
  createSymbol(start, end, geoType, parent, symbolId) {
    let symbol = null;
    switch (geoType) {
      case VectorType.BayWindow:
        symbol = new BayWindow(start, end, symbolId);
        break;
      case VectorType.FrenchWindow:
        symbol = new FrenchWindow(start, end, symbolId);
        break;
      case VectorType.SingleDoor:
        symbol = new SingleDoor(start, end, symbolId);
        break;
      case VectorType.DoubleDoor:
        symbol = new DoubleDoor(start, end, symbolId);
        break;
      case VectorType.SlideDoor:
        symbol = new SlideDoor(start, end, symbolId);
        break;
      case VectorType.SingleWindow:
        symbol = new SingleWindow(start, end, symbolId);
        break;
      case VectorType.Pass:
        symbol = new Pass(start, end, symbolId);
        break;
    }
    if (symbol != null) {
      symbol.setSymbolParent(parent);
      symbol.setPoints2d();
      this.setPosition3d(symbol);
      dataService.addSymbol(symbol);
    }
    if (parent) {
      const wall = dataService.getWall(parent);
      wallService.addChildren(wall, symbol.vectorId);
    }
    symbol.len = mathUtil.getDistance(start, end);
    return symbol;
  }

  addSymbol(position, symbolType, wallId) {
    const symbolLen = this.getDefaultSymbolLen(symbolType);
    const wall = dataService.getWall(wallId);
    const wallLine = wallService.getLine(wall);
    position = mathUtil.getJoinLinePoint(position, wallLine);
    // const twoParallels = mathUtil.getParallelLineForDistance(vSymbolLine, symbolLen / 2)
    // const point1 = mathUtil.getIntersectionPoint(twoParallels.line1, wallLine)
    // const point2 = mathUtil.getIntersectionPoint(twoParallels.line2, wallLine)
    // 不能超出墙的范围
    // const newPositions = this.getNewForContainSymbols(point1, point2, wallId)
    // if (wallService.isContain(wall, point1) && wallService.isContain(wall, point2) && newPositions != null && !newPositions.collision) {
    //     const symbol = this.createSymbol(point1, point2, symbolType, wallId)
    //     return symbol.vectorId
    // }

    const newPositions = this.getNewPosForSymbol(
      position,
      wallId,
      null,
      symbolLen
    );
    if (newPositions.state) {
      const symbol = this.createSymbol(
        newPositions.position1,
        newPositions.position2,
        symbolType,
        wallId
      );
      return symbol.vectorId;
    }
    return null;
  }

  setPosition3d(symbol) {
    const mid = {
      x: (symbol.startPoint.x + symbol.endPoint.x) / 2,
      y: (symbol.startPoint.y + symbol.endPoint.y) / 2,
    };
    const height = dataService.getFloorHeight();
    symbol.position3d = {
      x: mid.x,
      y: height,
      z: -1 * mid.y,
    };
  }

  isSymbol(geoType) {
    switch (geoType) {
      case "BayWindow":
        return true;
      case "FrenchWindow":
        return true;
      case "SingleDoor":
        return true;
      case "DoubleDoor":
        return true;
      case "SlideDoor":
        return true;
      case "SingleWindow":
        return true;
      case "Pass":
        return true;
    }
    return false;
  }

  getDefaultSymbolLen(geoType) {
    let len = 0;
    switch (geoType) {
      case "BayWindow":
        len = 1.5;
        break;
      case "FrenchWindow":
        len = 1.5;
        break;
      case "SingleDoor":
        len = 0.8;
        break;
      case "DoubleDoor":
        len = 1.5;
        break;
      case "SlideDoor":
        len = 1.5;
        break;
      case "SingleWindow":
        len = 0.8;
        break;
      case "Pass":
        len = 0.8;
        break;
    }
    return len;
  }

  //从墙上去掉symbol的所属
  deleteSymbolForWall(wall, symbolId) {
    if (wall) {
      let index = wall.children.indexOf(symbolId);
      if (index > -1) {
        wall.children.splice(index, 1);
      }
      let symbol = dataService.getSymbol(symbolId);
      symbol.parent = null;
    }
  }

  deleteSymbol(symbolId) {
    const symbol = dataService.getSymbol(symbolId);
    if (symbol.parent) {
      let wall = dataService.getWall(symbol.parent);
      this.deleteSymbolForWall(wall, symbolId);
    }
    dataService.deleteSymbol(symbolId);
  }

  // 更新symbol的归属
  changeSymbolForBelong(symbolId, wallId) {
    const symbol = dataService.getSymbol(symbolId);
    const parentId = symbol.parent;
    const parent = dataService.getWall(parentId);

    this.deleteSymbolForWall(parent, symbolId);
    symbol.setSymbolParent(wallId);
    let wall = dataService.getWall(wallId);
    wallService.addChildren(wall, symbolId);
  }

  // 拆分墙的时候，symbol也要相应的改变
  // wall拆分成wallId1和wallId2，一般情况wallId和wallId1是相同的
  reBelongForSplitWall(wallId, wallId1, wallId2) {
    const wall = dataService.getWall(wallId);
    for (let i = 0; i < wall.children.length; ++i) {
      const symbolId = wall.children[i];
      if (wallId != wallId1 && this.isContainSymbolForWall(symbolId, wallId1)) {
        this.changeSymbolForBelong(symbolId, wallId1);
      } else if (
        wallId != wallId2 &&
        this.isContainSymbolForWall(symbolId, wallId2)
      ) {
        this.changeSymbolForBelong(symbolId, wallId2);
      }
    }
  }

  // wallId对应的墙是否包含symbol
  isContainSymbolForWall(symbolId, wallId) {
    const wall = dataService.getWall(wallId);
    const symbol = dataService.getSymbol(symbolId);
    const point = {
      x: (symbol.startPoint.x + symbol.endPoint.x) / 2,
      y: (symbol.startPoint.y + symbol.endPoint.y) / 2,
    };

    if (wallService.isContain(wall, point)) {
      return true;
    }
  }

  // 更新symbol的归属
  // 墙可能删除了，也可能合并了等等
  changeSymbolForBelong(symbolId, wallId) {
    const symbol = dataService.getSymbol(symbolId);
    const parentId = symbol.parent;
    let parent = dataService.getWall(parentId);
    this.deleteSymbolForWall(parent, symbolId);
    symbol.setSymbolParent(wallId);
    let wall = dataService.getWall(wallId);
    wallService.addChildren(wall, symbolId);
  }

  // 墙角pointId移动的时候，周围的symbol都跟着变化
  updateSymbolsPositionsForWallCorner(pointId) {
    const point = dataService.getPoint(pointId);
    const parent = point.parent;
    for (const key in parent) {
      this.updateSymbolsPositionsForWall(key);
    }
  }

  // wallId对应的wall改变的时候，上面的symbol也跟着改变
  updateSymbolsPositionsForWall(wallId) {
    const wall = dataService.getWall(wallId);
    const symbolIds = wall.children;
    for (let i = 0; i < symbolIds.length; ++i) {
      const symbol = dataService.getSymbol(symbolIds[i]);
      this.updateSEForChangeWall(symbol);
    }
  }

  // 更新Symbold的startPoint，endPoint和points2d，随着wall来
  updateSEForChangeWall(symbol) {
    const symbolId = symbol.vectorId;
    //const symbol = dataService.getSymbol(symbolId);
    const wall = dataService.getWall(symbol.parent);

    const startPoint = dataService.getPoint(wall.start);
    const endPoint = dataService.getPoint(wall.end);

    const line = mathUtil.createLine1(startPoint, endPoint);
    const newStart = mathUtil.getJoinLinePoint(symbol.startPoint, line);
    const newEnd = mathUtil.getJoinLinePoint(symbol.endPoint, line);

    const dif = { x: 0, y: 0 };
    const min = 0.001; //不要超出一点
    let containFlag = true;
    if (!wallService.isContain(wall, newStart)) {
      // symbol的start与wall的start挨的近
      if (
        mathUtil.getDistance(newStart, startPoint) <
        mathUtil.getDistance(newStart, endPoint)
      ) {
        dif.x = startPoint.x - newStart.x;
        dif.y = startPoint.y - newStart.y;
      } else {
        dif.x = endPoint.x - newStart.x;
        dif.y = endPoint.y - newStart.y;
      }
      newStart.x += dif.x;
      newStart.y += dif.y;

      if (
        wallService.isContain(wall, {
          x: newEnd.x + dif.x,
          y: newEnd.y + dif.y,
        })
      ) {
        newEnd.x += dif.x;
        newEnd.y += dif.y;
      }

      containFlag = false;
    } else if (!wallService.isContain(wall, newEnd)) {
      if (
        mathUtil.getDistance(newEnd, startPoint) <
        mathUtil.getDistance(newEnd, endPoint)
      ) {
        dif.x = startPoint.x - newEnd.x;
        dif.y = startPoint.y - newEnd.y;
      } else {
        dif.x = endPoint.x - newEnd.x;
        dif.y = endPoint.y - newEnd.y;
      }

      newEnd.x += dif.x;
      newEnd.y += dif.y;

      if (
        wallService.isContain(wall, {
          x: newStart.x + dif.x,
          y: newStart.y + dif.y,
        })
      ) {
        newStart.x += dif.x;
        newStart.y += dif.y;
      }

      containFlag = false;
    }

    // 是否与wall上别的symbol部分重合
    if (!containFlag) {
      this.updateSEForCollideSymbols(symbolId, newStart, newEnd);
    } else {
      this.setPosition(symbol, newStart, "start");
      this.setPosition(symbol, newEnd, "end");
      symbol.setPoints2d();
    }
  }

  //需要考虑碰撞
  updateSEForCollideSymbols(symbolId, newStart, newEnd) {
    const symbol = dataService.getSymbol(symbolId);
    // 是否与wall上别的symbol部分重合
    const newPositions = this.getNewForContainSymbols(
      newStart,
      newEnd,
      symbol.parent,
      symbolId
    );
    // if (newPositions != null) {
    //     this.setPosition(symbol, newPositions.position1, 'start')
    //     this.setPosition(symbol, newPositions.position2, 'end')
    //     symbol.setPoints2d()
    // }

    // if (mathUtil.getDistance(symbol.startPoint, symbol.endPoint) < Constant.minSymbolLen) {
    //     this.deleteSymbol(symbolId)
    // }
    if (newPositions != null) {
      if (
        mathUtil.getDistance(newPositions.position1, newPositions.position2) <
        Constant.minSymbolLen
      ) {
        this.deleteSymbol(symbolId);
      } else {
        this.setPosition(symbol, newPositions.position1, "start");
        this.setPosition(symbol, newPositions.position2, "end");
        symbol.setPoints2d();
      }
    }
  }

  //position1, position2表示exceptSymbolId新的坐标
  getNewForContainSymbols(position1, position2, wallId, exceptSymbolId) {
    const min = 0.01;
    const wall = dataService.getWall(wallId);
    let points = [];
    for (let i = 0; i < wall.children.length; ++i) {
      const symbolId = wall.children[i];
      if (symbolId == exceptSymbolId) {
        continue;
      }
      const symbol = dataService.getSymbol(symbolId);
      points.push({
        x: symbol.startPoint.x,
        y: symbol.startPoint.y,
        index: 1,
        vectorId: symbolId,
      });
      points.push({
        x: symbol.endPoint.x,
        y: symbol.endPoint.y,
        index: 2,
        vectorId: symbolId,
      });
    }

    points.push({
      x: position1.x,
      y: position1.y,
      index: 1,
      vectorId: exceptSymbolId,
    });
    points.push({
      x: position2.x,
      y: position2.y,
      index: 2,
      vectorId: exceptSymbolId,
    });

    const startPoint = dataService.getPoint(wall.start);
    points = points.sort(sortNumber.bind(this));
    function sortNumber(a, b) {
      return (
        mathUtil.getDistance(startPoint, a) -
        mathUtil.getDistance(startPoint, b)
      );
    }

    for (let i = 0; i < points.length - 1; ++i) {
      if (points[i].vectorId == exceptSymbolId) {
        if (i == 0 || i == points.length - 2) {
          if (
            mathUtil.getDistance(points[i], points[i + 1]) <
            Constant.minSymbolLen
          ) {
            return null;
          } else if (points[i + 1].vectorId == exceptSymbolId) {
            return {
              position1: position1,
              position2: { x: points[i + 1].x, y: points[i + 1].y },
            };
          } else if (points[i + 1].vectorId != exceptSymbolId) {
            return {
              position1: position1,
              position2: { x: points[i + 1].x, y: points[i + 1].y },
              collision: true,
            };
          }
        }
        //不在其他symbol内部
        else if (
          points[i + 1].vectorId == exceptSymbolId &&
          points[i - 1].vectorId != points[i + 2].vectorId
        ) {
          if (
            mathUtil.getDistance(
              { x: points[i - 1].x, y: points[i - 1].y },
              { x: points[i + 2].x, y: points[i + 2].y }
            ) < Constant.minSymbolLen
          ) {
            return null;
          } else {
            return {
              position1: { x: points[i - 1].x, y: points[i - 1].y },
              position2: { x: points[i + 2].x, y: points[i + 2].y },
              //collision: true,
            };
          }
        }
      }
    }
    return null;
  }

  getNewPosForSymbol(point, wallId, exceptSymbolId, currentSymbolLen) {
    const wall = dataService.getWall(wallId);
    const startPoint = dataService.getPoint(wall.start);
    const endPoint = dataService.getPoint(wall.end);
    const wallLine = wallService.getLine(wall);
    const vSymbolLine = mathUtil.getVerticalLine(wallLine, point);
    let symbolLen = currentSymbolLen;
    if (exceptSymbolId) {
      const currentSymbol = dataService.getSymbol(exceptSymbolId);
      symbolLen = currentSymbol.len;
    }

    const twoParallels = mathUtil.getParallelLineForDistance(
      vSymbolLine,
      symbolLen / 2
    );
    let point1 = mathUtil.getIntersectionPoint(twoParallels.line1, wallLine);
    let point2 = mathUtil.getIntersectionPoint(twoParallels.line2, wallLine);

    //如果在墙外部，就平移到墙内部
    if (mathUtil.getDistance(startPoint, endPoint) < symbolLen) {
      mathUtil.clonePoint(point1, startPoint);
      mathUtil.clonePoint(point2, endPoint);
    } else {
      let dx, dy;
      let _point1 = {};
      let _point2 = {};
      if (!wallService.isContain(wall, point1)) {
        dx = startPoint.x - point1.x;
        dy = startPoint.y - point1.y;
        _point2.x = point2.x + dx;
        _point2.y = point2.y + dy;
        if (!wallService.isContain(wall, _point2)) {
          dx = endPoint.x - point1.x;
          dy = endPoint.y - point1.y;

          point2.x += dx;
          point2.y += dy;
          mathUtil.clonePoint(point1, endPoint);
        } else {
          point2.x += dx;
          point2.y += dy;
          mathUtil.clonePoint(point1, startPoint);
        }
      } else if (!wallService.isContain(wall, point2)) {
        dx = startPoint.x - point2.x;
        dy = startPoint.y - point2.y;
        _point1.x = point1.x + dx;
        _point1.y = point1.y + dy;
        if (!wallService.isContain(wall, _point1)) {
          dx = endPoint.x - point2.x;
          dy = endPoint.y - point2.y;

          point1.x += dx;
          point1.y += dy;
          mathUtil.clonePoint(point2, endPoint);
        } else {
          point1.x += dx;
          point1.y += dy;
          mathUtil.clonePoint(point2, startPoint);
        }
      }
    }

    let points = [];
    for (let i = 0; i < wall.children.length; ++i) {
      const symbolId = wall.children[i];
      if (symbolId == exceptSymbolId) {
        continue;
      }
      const symbol = dataService.getSymbol(symbolId);
      points.push({
        x: symbol.startPoint.x,
        y: symbol.startPoint.y,
        index: 1, //表示start
        vectorId: symbolId,
      });
      points.push({
        x: symbol.endPoint.x,
        y: symbol.endPoint.y,
        index: 2, //表示end
        vectorId: symbolId,
      });
    }

    points.push({
      x: startPoint.x,
      y: startPoint.y,
      index: 1,
      vectorId: wallId,
      type: VectorType.Wall,
    });
    points.push({
      x: endPoint.x,
      y: endPoint.y,
      index: 2,
      vectorId: wallId,
      type: VectorType.Wall,
    });

    points = points.sort(sortNumber.bind(this));
    function sortNumber(a, b) {
      return (
        mathUtil.getDistance(startPoint, a) -
        mathUtil.getDistance(startPoint, b)
      );
    }

    let flag = true;
    for (let i = 0; i < points.length - 1; ++i) {
      if (mathUtil.isContainForSegment(point, points[i], points[i + 1])) {
        if (mathUtil.getDistance(points[i], points[i + 1]) > symbolLen) {
          //完全在一个symbol内部或者symbol内有其他的symbol
          if (
            points[i].vectorId == points[i + 1].vectorId &&
            points[i].type != VectorType.Wall
          ) {
            return {
              position1: point1,
              position2: point2,
              collision: true,
              state: false,
            };
          }
          //完全在wall内部
          else if (
            points[i].vectorId == points[i + 1].vectorId &&
            points[i].type == VectorType.Wall
          ) {
            return {
              position1: point1,
              position2: point2,
              collision: true,
              state: true,
            };
          }
          //一端在墙/门/窗外部
          else if (
            !mathUtil.isContainForSegment(point1, points[i], points[i + 1]) ||
            !mathUtil.isContainForSegment(point2, points[i], points[i + 1])
          ) {
            return {
              position1: point1,
              position2: point2,
              collision: true,
              state: false,
            };
          }
        } else if (
          mathUtil.getDistance(points[i], points[i + 1]) < Constant.minSymbolLen
        ) {
          return {
            position1: point1,
            position2: point2,
            collision: true,
            state: false,
          };
        }
        //大于最小距离，小于本来的长度。
        else if (points[i].vectorId != points[i + 1].vectorId) {
          return {
            position1: { x: points[i].x, y: points[i].y },
            position2: { x: points[i + 1].x, y: points[i + 1].y },
            collision: true,
            state: true,
          };
        }
        //完全在一个symbol内部
        else if (
          points[i].vectorId == points[i + 1].vectorId &&
          points[i].type != VectorType.Wall
        ) {
          return {
            position1: point1,
            position2: point2,
            collision: true,
            state: false,
          };
        } else if (
          points[i].vectorId == points[i + 1].vectorId &&
          points[i].type == VectorType.Wall
        ) {
          return {
            position1: { x: points[i].x, y: points[i].y },
            position2: { x: points[i + 1].x, y: points[i + 1].y },
            collision: true,
            state: true,
          };
        }
        flag = false;
      } else if (mathUtil.getDistance(point, points[i]) < Constant.minAdsorb) {
        return {
          position1: point1,
          position2: point2,
          collision: true,
          state: false,
        };
      }
    }
    if (flag) {
      return {
        position1: point1,
        position2: point2,
        collision: false,
        state: true,
      };
    } else {
      //console.error(566)
      return {
        position1: point1,
        position2: point2,
        collision: false,
        state: true,
      };
    }
    // return {
    //     position1: point1,
    //     position2: point2,
    //     collision: false,
    //     state: true,
    // }
  }

  setPosition(symbol, position, dir) {
    if (dir == "start") {
      mathUtil.clonePoint(symbol.startPoint, position);
    } else if (dir == "end") {
      mathUtil.clonePoint(symbol.endPoint, position);
    }
  }

  // 只考虑symbol的端点可能不在墙面上了，这时候要更新
  // 用在移动墙面的时候，邻居墙的symbols可能要变
  updateSymbolsPositionsForNeighWall(wallId) {
    const wall = dataService.getWall(wallId);
    const symbolIds = wall.children;
    for (let i = 0; i < symbolIds.length; ++i) {
      this.updateSEForWallSize(symbolIds[i]);
    }
  }

  // 更新symbol的start或者end，一般是symbol的端点在墙外了
  updateSEForWallSize(symbolId) {
    const symbol = dataService.getSymbol(symbolId);
    const wall = dataService.getWall(symbol.parent);
    const startPoint = dataService.getPoint(wall.start);
    const endPoint = dataService.getPoint(wall.end);
    const newStart = {
      x: symbol.startPoint.x,
      y: symbol.startPoint.y,
    };

    const newEnd = {
      x: symbol.endPoint.x,
      y: symbol.endPoint.y,
    };

    const dif = { x: 0, y: 0 };

    if (!wallService.isContain(wall, newStart)) {
      // symbol的start与wall的start挨的近
      if (
        mathUtil.getDistance(newStart, startPoint) <
        mathUtil.getDistance(newStart, endPoint)
      ) {
        dif.x = startPoint.x - newStart.x;
        dif.y = startPoint.y - newStart.y;
      } else {
        dif.x = endPoint.x - newStart.x;
        dif.y = endPoint.y - newStart.y;
      }

      newStart.x += dif.x;
      newStart.y += dif.y;
    } else if (!wallService.isContain(wall, newEnd)) {
      if (
        mathUtil.getDistance(newEnd, startPoint) <
        mathUtil.getDistance(newEnd, endPoint)
      ) {
        dif.x = startPoint.x - newEnd.x;
        dif.y = startPoint.y - newEnd.y;
      } else {
        dif.x = endPoint.x - newEnd.x;
        dif.y = endPoint.y - newEnd.y;
      }

      newEnd.x += dif.x;
      newEnd.y += dif.y;
    } else {
      return null;
    }
    this.updateSEForCollideSymbols(symbolId, newStart, newEnd);
  }

  updateSymbolForLen(symbolId, len) {
    const symbol = dataService.getSymbol(symbolId);
    const start = symbol.startPoint;
    const end = symbol.endPoint;
    const line = mathUtil.createLine1(start, end);
    const midPoint = { x: (start.x + end.x) / 2, y: (start.y + end.y) / 2 };
    const vertLine = mathUtil.getVerticalLine(line, midPoint);

    const wall = dataService.getWall(symbol.parent);
    const startPoint = dataService.getPoint(wall.start);
    const endPoint = dataService.getPoint(wall.end);

    if (len == null || typeof len === "undefined") {
      len = mathUtil.getDistance(start, end);
      const distance = mathUtil.getDistance(startPoint, endPoint);
      if (len > distance) {
        len = distance;
      }
    }
    const lines = mathUtil.getParallelLineForDistance(vertLine, len / 2);

    const join1 = mathUtil.getIntersectionPoint(lines.line1, line);
    const join2 = mathUtil.getIntersectionPoint(lines.line2, line);

    const symbolInfo = {};
    if (
      mathUtil.getDistance(start, join1) < mathUtil.getDistance(start, join2)
    ) {
      symbolInfo.start = join1;
      symbolInfo.end = join2;
    } else {
      symbolInfo.start = join2;
      symbolInfo.end = join1;
    }

    let startFlag = false;
    let endFlag = false;
    let dx, dy;
    const nearestPosition = this.getNearestPosition(
      symbol.parent,
      symbolId,
      true
    );
    if (
      nearestPosition.startPosition != null &&
      mathUtil.PointInSegment(
        nearestPosition.startPosition,
        symbolInfo.start,
        symbolInfo.end
      )
    ) {
      // start堵住了，end需要增加
      //dx = symbolInfo.end.x - symbol.endPoint.x
      //dy = symbolInfo.end.y - symbol.endPoint.y
      dx = symbolInfo.start.x - nearestPosition.startPosition.x;
      dy = symbolInfo.start.y - nearestPosition.startPosition.y;
      mathUtil.clonePoint(symbolInfo.start, nearestPosition.startPosition);
      symbolInfo.end.x -= dx;
      symbolInfo.end.y -= dy;

      startFlag = true;
    }

    if (
      nearestPosition.endPosition != null &&
      mathUtil.PointInSegment(
        nearestPosition.endPosition,
        symbolInfo.start,
        symbolInfo.end
      )
    ) {
      // end堵住了，start需要增加
      dx = symbolInfo.end.x - nearestPosition.endPosition.x;
      dy = symbolInfo.end.y - nearestPosition.endPosition.y;
      mathUtil.clonePoint(symbolInfo.end, nearestPosition.endPosition);
      if (!startFlag) {
        symbolInfo.start.x -= dx;
        symbolInfo.start.y -= dy;
        //这时候可能start又超出范围了
        if (
          mathUtil.PointInSegment(
            nearestPosition.startPosition,
            symbolInfo.start,
            symbolInfo.end
          )
        ) {
          mathUtil.clonePoint(symbolInfo.start, nearestPosition.startPosition);
          startFlag = true;
        }
      }
      endFlag = true;
    }
    symbolInfo.vectorId = symbolId;
    mathUtil.clonePoint(symbol.startPoint, symbolInfo.start);
    mathUtil.clonePoint(symbol.endPoint, symbolInfo.end);
    symbol.setPoints2d();

    return {
      block: startFlag & endFlag,
      start: symbolInfo.start,
      end: symbolInfo.end,
    };
  }

  getNearestPosition(wallId, symbolId, isExceedWall, position1, position2) {
    const wall = dataService.getWall(wallId);
    const startPoint = dataService.getPoint(wall.start);
    const endPoint = dataService.getPoint(wall.end);
    const symbolIds = wall.children;
    let symbol = dataService.getSymbol(symbolId);

    if (!symbol && !symbolId) {
      symbol = {};
      symbol = {
        struct: {},
      };
      symbol.startPoint = position1;
      symbol.endPoint = position2;
    }

    let minSdis = 10000;
    let minEdis = 10000;
    let startPosition = null;
    let endPosition = null;

    // 与startPosition同属symbol端点（另一头）
    let startPosition2 = null;
    // 与endPosition同属symbol端点（另一头）
    let endPosition2 = null;

    for (let i = 0; i < symbolIds.length; ++i) {
      if (symbolIds[i] == symbolId) {
        continue;
      }

      const otherSymbol = dataService.getSymbol(symbolIds[i]);

      const dis1 = mathUtil.getDistance(
        symbol.startPoint,
        otherSymbol.startPoint
      );
      const dis2 = mathUtil.getDistance(
        symbol.startPoint,
        otherSymbol.endPoint
      );
      if (minSdis > Math.min(dis1, dis2)) {
        if (dis1 < dis2) {
          startPosition = otherSymbol.startPoint;
          startPosition2 = otherSymbol.endPoint;
        } else {
          startPosition = otherSymbol.endPoint;
          startPosition2 = otherSymbol.startPoint;
        }
        if (
          mathUtil.getDistance(symbol.startPoint, startPosition) >
          mathUtil.getDistance(symbol.endPoint, startPosition)
        ) {
          startPosition = null;
          startPosition2 = null;
        } else {
          minSdis = Math.min(dis1, dis2);
        }
      }

      const dis3 = mathUtil.getDistance(
        symbol.endPoint,
        otherSymbol.startPoint
      );
      const dis4 = mathUtil.getDistance(symbol.endPoint, otherSymbol.endPoint);
      if (minEdis > Math.min(dis3, dis4)) {
        if (dis3 < dis4) {
          endPosition = otherSymbol.startPoint;
          endPosition2 = otherSymbol.endPoint;
        } else {
          endPosition = otherSymbol.endPoint;
          endPosition2 = otherSymbol.startPoint;
        }
        if (
          mathUtil.getDistance(symbol.endPoint, endPosition) >
          mathUtil.getDistance(symbol.startPoint, endPosition)
        ) {
          endPosition = null;
          endPosition2 = null;
        } else {
          minEdis = Math.min(dis3, dis4);
        }
      }
    }

    if (isExceedWall) {
      if (startPosition == null) {
        if (
          mathUtil.getDistance(startPoint, symbol.startPoint) >
          mathUtil.getDistance(startPoint, symbol.endPoint)
        ) {
          startPosition = endPoint;
          startPosition2 = endPoint;
        } else {
          startPosition = startPoint;
          startPosition2 = startPoint;
        }
      }

      if (endPosition == null) {
        if (
          mathUtil.getDistance(startPoint, symbol.startPoint) >
          mathUtil.getDistance(startPoint, symbol.endPoint)
        ) {
          endPosition = startPoint;
          endPosition2 = startPoint;
        } else {
          endPosition = endPoint;
          endPosition2 = endPoint;
        }
      }
    }
    return {
      startPosition: startPosition,
      startPosition2: startPosition2,
      endPosition: endPosition,
      endPosition2: endPosition2,
    };
  }

  // point是目标点，selectState表示start还是end
  // 只是不允许start和end互换位置
  moveSymbolSinglePoint(targetPosition, symbolId, selectState) {
    const symbol = dataService.getSymbol(symbolId);
    const symbolLine = mathUtil.createLine1(symbol.startPoint, symbol.endPoint);

    const vSymbolLine = mathUtil.getVerticalLine(symbolLine, targetPosition);
    targetPosition = mathUtil.getIntersectionPoint(vSymbolLine, symbolLine);

    const midPoint = {
      x: (symbol.startPoint.x + symbol.endPoint.x) / 2,
      y: (symbol.startPoint.y + symbol.endPoint.y) / 2,
    };

    // 是否超过了wall外
    const wall = dataService.getWall(symbol.parent);
    const startPoint = dataService.getPoint(wall.start);
    const endPoint = dataService.getPoint(wall.end);

    if (selectState == "start") {
      // symbol的start和end位置交换了
      if (!mathUtil.PointInSegment(midPoint, targetPosition, symbol.endPoint)) {
        return null;
      } else {
        // start-start
        if (
          mathUtil.getDistance(symbol.startPoint, startPoint) <
          mathUtil.getDistance(symbol.endPoint, startPoint)
        ) {
          // 超出了
          if (
            mathUtil.getDistance(targetPosition, midPoint) >
            mathUtil.getDistance(startPoint, midPoint)
          ) {
            mathUtil.clonePoint(targetPosition, startPoint);
          }
        }
        // start-end
        else {
          // 超出了
          if (
            mathUtil.getDistance(targetPosition, midPoint) >
            mathUtil.getDistance(endPoint, midPoint)
          ) {
            mathUtil.clonePoint(targetPosition, endPoint);
          }
        }
      }
    } else if (selectState == "end") {
      // symbol的start和end位置交换了
      if (
        !mathUtil.PointInSegment(midPoint, targetPosition, symbol.startPoint)
      ) {
        return null;
      } else {
        // start-start
        if (
          mathUtil.getDistance(symbol.endPoint, endPoint) <
          mathUtil.getDistance(symbol.startPoint, endPoint)
        ) {
          // 超出了
          if (
            mathUtil.getDistance(targetPosition, midPoint) >
            mathUtil.getDistance(endPoint, midPoint)
          ) {
            mathUtil.clonePoint(targetPosition, endPoint);
          }
        }
        // start-end
        else {
          // 超出了
          if (
            mathUtil.getDistance(targetPosition, midPoint) >
            mathUtil.getDistance(startPoint, midPoint)
          ) {
            mathUtil.clonePoint(targetPosition, startPoint);
          }
        }
      }
    }

    return {
      dir: selectState,
      position: targetPosition,
    };
  }

  setSymbolInfo(symbolInfo) {
    let symbol = dataService.getSymbol(symbolInfo.vectorId);
    symbol.openSide = symbolInfo.openSide;
    symbol.startPoint = symbolInfo.start;
    symbol.endPoint = symbolInfo.end;
    symbol.points2d = JSON.parse(JSON.stringify(symbolInfo.points2d));
    symbol.enter = symbolInfo.enter;
    symbol.parent = symbolInfo.parent;
    return symbol;
  }

  setEnterImg(img) {
    this.enterImg = img;
  }

  getEnterImg() {
    return this.enterImg;
  }

  createSymbolFromPanorama(raycaster, geoType, panoId) {
    //console.log(raycaster, geoType)
    let joinsInfo = [];
    const start = {
      x: raycaster.ray.origin.x,
      y: -1 * raycaster.ray.origin.z,
    };

    // const end = {
    //     x: raycaster.ray.origin.x + raycaster.ray.direction.x,
    //     y: -1 * (raycaster.ray.origin.z + raycaster.ray.direction.z),
    // }

    const walls = dataService.getWalls();
    for (const wallId in walls) {
      const wall = dataService.getWall(wallId);
      const startPoint = dataService.getPoint(wall.start);
      const endPoint = dataService.getPoint(wall.end);

      const join = mathUtil.raySegmentIntersection(
        start,
        raycaster.ray.direction,
        startPoint,
        endPoint
      );
      if (join != null) {
        joinsInfo.push({
          wallId: wallId,
          join: join,
        });
      }
    }

    if (joinsInfo.length > 0) {
      joinsInfo = joinsInfo.sort(sortNumber.bind(this));
      function sortNumber(a, b) {
        return (
          mathUtil.getDistance(start, a.join) -
          mathUtil.getDistance(start, b.join)
        );
      }

      const symbolId = this.addSymbol(
        joinsInfo[0].join,
        geoType,
        joinsInfo[0].wallId
      );
      if (symbolId != null) {
        moveSymbol.moveFullSymbol(
          joinsInfo[0].join,
          symbolId,
          joinsInfo[0].wallId
        );
        const symbol = dataService.getSymbol(symbolId);
        return symbolId;
      } else {
        console.error("漫游模式下添加门/窗：门/窗区域太小，加不上");
        return null;
      }
    } else {
      console.error("漫游模式下添加门/窗：没有与任何墙相交");
      return null;
    }
  }
}

const symbolService = new SymbolService();
export { symbolService };