补充：直角定位法

src/graphic/Controls/MoveLine.js

@@ -1,5 +1,7 @@
 import Constant from "../Constant";
 import { dataService } from "../Service/DataService";
+import { lineService } from "../Service/LineService";
+import { pointService } from "../Service/PointService";
 import { mathUtil } from "../Util/MathUtil";
 import VectorCategory from "../enum/VectorCategory";
 
@@ -25,11 +27,52 @@ export default class MoveLine {
         x: endPoint.x + dx,
         y: endPoint.y + dy,
       };
-      line = mathUtil.createLine1(point1, point2);
-      point1 = mathUtil.getJoinLinePoint(startPoint, line);
-      startPoint.x = point1.x;
-      startPoint.y = point1.y;
-      point2 = mathUtil.getJoinLinePoint(endPoint, line);
+      let lineGeometry = mathUtil.createLine1(point1, point2);
+      point1 = mathUtil.getJoinLinePoint(startPoint, lineGeometry);
+      //startPoint本来是基准点
+      if (startPoint.getCategory() == VectorCategory.Point.BasePoint) {
+        //达到一定距离才能移动
+        if (mathUtil.getDistance(startPoint, point1) < Constant.minAdsorbPix) {
+          return false;
+        }
+        let newStartPoint = pointService.create(point1);
+        lineService.createByPointId(
+          startPoint.vectorId,
+          newStartPoint.vectorId,
+          VectorCategory.Line.ExtendedPositionLine
+        );
+        dataService.deletePointParent(startPoint.vectorId, lineId);
+        line.startId = newStartPoint.vectorId;
+        newStartPoint.setPointParent(line.vectorId, "start");
+      } else {
+        startPoint.x = point1.x;
+        startPoint.y = point1.y;
+        let parents = Object.keys(startPoint.parent);
+        let extendedLine = dataService.getLine(parents[0]);
+        if (
+          extendedLine.getCategory() != VectorCategory.Line.ExtendedPositionLine
+        ) {
+          extendedLine = dataService.getLine(parents[1]);
+        }
+        if (
+          extendedLine.getCategory() == VectorCategory.Line.ExtendedPositionLine
+        ) {
+          //point1是基准点
+          point1 = dataService.getPoint(extendedLine.startId);
+          point2 = dataService.getPoint(extendedLine.endId);
+          if (mathUtil.getDistance(point1, point2) < Constant.minAdsorbPix) {
+            dataService.deleteLine(extendedLine.vectorId);
+            dataService.deletePoint(extendedLine.endId);
+
+            line.startId = point1.vectorId;
+            point1.setPointParent(line.vectorId, "start");
+
+            lineGeometry = mathUtil.createLine3(lineGeometry, point1);
+          }
+        }
+      }
+
+      point2 = mathUtil.getJoinLinePoint(endPoint, lineGeometry);
       endPoint.x = point2.x;
       endPoint.y = point2.y;
     } else {
@@ -38,6 +81,7 @@ export default class MoveLine {
       endPoint.x += dx;
       endPoint.y += dy;
     }
+    return true;
   }
 
   moveCurveLine(curveLineId, dx, dy) {

src/graphic/Layer.js

@@ -1,49 +1,49 @@
-import Load from './Load';
-import { stateService } from './Service/StateService';
-import { elementService } from './Service/ElementService';
-import { dataService } from './Service/DataService';
-import { textService } from './Service/TextService';
-import { historyService } from './Service/HistoryService';
-import UIControl from './Controls/UIControl';
+import Load from "./Load";
+import { stateService } from "./Service/StateService";
+import { elementService } from "./Service/ElementService";
+import { dataService } from "./Service/DataService";
+import { textService } from "./Service/TextService";
+import { historyService } from "./Service/HistoryService";
+import UIControl from "./Controls/UIControl";
 // import { moveRectangle } from "./Controls/MoveRectangle";
-import { moveText } from './Controls/MoveText';
-import { moveSVG } from './Controls/MoveSVG';
-import { moveMagnifier } from './Controls/MoveMagnifier';
-import { addRoad } from './Controls/AddRoad';
-import { addCrossRoad } from './Controls/AddCrossRoad';
-import { addLine } from './Controls/AddLine';
-import { addPoint } from './Controls/AddPoint';
-import { addCircle } from './Controls/AddCircle';
-import { addElliptic } from './Controls/AddElliptic';
-import { addText } from './Controls/AddText';
-import { addMagnifier } from './Controls/AddMagnifier';
-import { addSVG } from './Controls/AddSVG';
-import { moveRoad } from './Controls/MoveRoad';
-import { moveLine } from './Controls/MoveLine';
-import { movePoint } from './Controls/MovePoint';
-import { moveCircle } from './Controls/MoveCircle';
-import { moveElliptic } from './Controls/MoveElliptic';
-import { coordinate } from './Coordinate';
-import Render from './Renderer/Render';
-import { draw } from './Renderer/Draw';
-import { listenLayer } from './ListenLayer';
-import LayerEvents from './enum/LayerEvents.js';
-import UIEvents from './enum/UIEvents.js';
-import SelectState from './enum/SelectState.js';
-import VectorType from './enum/VectorType';
-import { mathUtil } from './Util/MathUtil';
-import History from './History/History';
-import mitt from 'mitt';
-import { roadService } from './Service/RoadService';
-import { edgeService } from './Service/EdgeService';
-import { roadPointService } from './Service/RoadPointService';
-import { curveRoadService } from './Service/CurveRoadService';
-import VectorCategory from './enum/VectorCategory';
-import Settings from './Settings';
-import Constant from './Constant';
-import { uiService } from './Service/UIService';
-import { imageService } from './Service/ImageService';
-import VectorEvents from './enum/VectorEvents';
+import { moveText } from "./Controls/MoveText";
+import { moveSVG } from "./Controls/MoveSVG";
+import { moveMagnifier } from "./Controls/MoveMagnifier";
+import { addRoad } from "./Controls/AddRoad";
+import { addCrossRoad } from "./Controls/AddCrossRoad";
+import { addLine } from "./Controls/AddLine";
+import { addPoint } from "./Controls/AddPoint";
+import { addCircle } from "./Controls/AddCircle";
+import { addElliptic } from "./Controls/AddElliptic";
+import { addText } from "./Controls/AddText";
+import { addMagnifier } from "./Controls/AddMagnifier";
+import { addSVG } from "./Controls/AddSVG";
+import { moveRoad } from "./Controls/MoveRoad";
+import { moveLine } from "./Controls/MoveLine";
+import { movePoint } from "./Controls/MovePoint";
+import { moveCircle } from "./Controls/MoveCircle";
+import { moveElliptic } from "./Controls/MoveElliptic";
+import { coordinate } from "./Coordinate";
+import Render from "./Renderer/Render";
+import { draw } from "./Renderer/Draw";
+import { listenLayer } from "./ListenLayer";
+import LayerEvents from "./enum/LayerEvents.js";
+import UIEvents from "./enum/UIEvents.js";
+import SelectState from "./enum/SelectState.js";
+import VectorType from "./enum/VectorType";
+import { mathUtil } from "./Util/MathUtil";
+import History from "./History/History";
+import mitt from "mitt";
+import { roadService } from "./Service/RoadService";
+import { edgeService } from "./Service/EdgeService";
+import { roadPointService } from "./Service/RoadPointService";
+import { curveRoadService } from "./Service/CurveRoadService";
+import VectorCategory from "./enum/VectorCategory";
+import Settings from "./Settings";
+import Constant from "./Constant";
+import { uiService } from "./Service/UIService";
+import { imageService } from "./Service/ImageService";
+import VectorEvents from "./enum/VectorEvents";
 
 const minDragDis = 10;
 const minZoom = 20;
@@ -78,25 +78,25 @@ export default class Layer {
   }
 
   bindEvents() {
-    this.canvas.addEventListener('contextmenu', function (e) {
+    this.canvas.addEventListener("contextmenu", function (e) {
       e.preventDefault();
     });
-    this.canvas.addEventListener('mousedown', this.onMouseDown.bind(this));
-    this.canvas.addEventListener('mousemove', this.onMouseMove.bind(this));
-    this.canvas.addEventListener('mouseup', this.onMouseUp.bind(this));
+    this.canvas.addEventListener("mousedown", this.onMouseDown.bind(this));
+    this.canvas.addEventListener("mousemove", this.onMouseMove.bind(this));
+    this.canvas.addEventListener("mouseup", this.onMouseUp.bind(this));
 
-    this.canvas.addEventListener('touchstart', this.onMouseDown.bind(this));
-    this.canvas.addEventListener('touchmove', this.onMouseMove.bind(this));
-    this.canvas.addEventListener('touchend', this.onMouseUp.bind(this));
+    this.canvas.addEventListener("touchstart", this.onMouseDown.bind(this));
+    this.canvas.addEventListener("touchmove", this.onMouseMove.bind(this));
+    this.canvas.addEventListener("touchend", this.onMouseUp.bind(this));
 
-    this.canvas.addEventListener('mousewheel', this.onWheel.bind(this));
-    this.canvas.addEventListener('DOMMouseScroll', this.onWheel.bind(this));
-    this.canvas.addEventListener('resize', this.reSize.bind(this));
-    document.addEventListener('keydown', this.onKeydown.bind(this));
+    this.canvas.addEventListener("mousewheel", this.onWheel.bind(this));
+    this.canvas.addEventListener("DOMMouseScroll", this.onWheel.bind(this));
+    this.canvas.addEventListener("resize", this.reSize.bind(this));
+    document.addEventListener("keydown", this.onKeydown.bind(this));
   }
 
   reSize = function () {
-    console.log('resize');
+    console.log("resize");
     coordinate.updateForCanvas();
     this.renderer.autoRedraw();
   };
@@ -131,16 +131,16 @@ export default class Layer {
     listenLayer.start(position);
     let selectItem = stateService.getSelectItem();
     let focusItem = stateService.getFocusItem();
-    this.setEventName('mouseDown');
+    this.setEventName("mouseDown");
     const eventName = stateService.getEventName();
     switch (eventName) {
       case LayerEvents.AddRoad:
         stateService.setEventName(LayerEvents.AddingRoad);
-        addRoad.setNewRoadPoint('start', position);
+        addRoad.setNewRoadPoint("start", position);
         break;
       case LayerEvents.AddCurveRoad:
         stateService.setEventName(LayerEvents.AddingCurveRoad);
-        addRoad.setNewRoadPoint('start', position);
+        addRoad.setNewRoadPoint("start", position);
         break;
       case LayerEvents.AddLine:
         stateService.setEventName(LayerEvents.AddingLine);
@@ -154,11 +154,15 @@ export default class Layer {
         stateService.setEventName(LayerEvents.MovePoint);
         const newPoint = addPoint.buildPoint(position);
         if (newPoint) {
-          stateService.setSelectItem(newPoint.vectorId, VectorType.Point, SelectState.Select);
+          stateService.setSelectItem(
+            newPoint.vectorId,
+            VectorType.Point,
+            SelectState.Select
+          );
           this.history.save();
           this.renderer.autoRedraw();
         } else {
-          this.uiControl.prompt({ msg: '请先添加基准点', time: 1000 });
+          this.uiControl.prompt({ msg: "请先添加基准点", time: 1000 });
         }
         break;
       case LayerEvents.AddCircle:
@@ -172,7 +176,11 @@ export default class Layer {
       case LayerEvents.AddText:
         stateService.setEventName(LayerEvents.MoveText);
         addText.buildText(position);
-        stateService.setSelectItem(addText.newText.vectorId, VectorType.Text, SelectState.Select);
+        stateService.setSelectItem(
+          addText.newText.vectorId,
+          VectorType.Text,
+          SelectState.Select
+        );
         addText.clear();
         break;
       case LayerEvents.AddSVG:
@@ -186,7 +194,11 @@ export default class Layer {
       case LayerEvents.AddMagnifier:
         stateService.setEventName(LayerEvents.MoveMagnifier);
         addMagnifier.buildMagnifier(position);
-        stateService.setSelectItem(addMagnifier.newMagnifier.vectorId, VectorType.Magnifier, SelectState.Select);
+        stateService.setSelectItem(
+          addMagnifier.newMagnifier.vectorId,
+          VectorType.Magnifier,
+          SelectState.Select
+        );
         addMagnifier.clear();
         break;
       case VectorEvents.AddLane:
@@ -194,18 +206,34 @@ export default class Layer {
           let road = dataService.getRoad(selectItem.vectorId);
           if (road) {
             let roadLanCount = road.getLanesCount(selectItem.dir);
-            if (selectItem.dir == 'left') {
-              roadService.updateForAddSubtractLanesCount(road.vectorId, roadLanCount + 1, selectItem.dir);
+            if (selectItem.dir == "left") {
+              roadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                roadLanCount + 1,
+                selectItem.dir
+              );
             } else {
-              roadService.updateForAddSubtractLanesCount(road.vectorId, roadLanCount + 1, selectItem.dir);
+              roadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                roadLanCount + 1,
+                selectItem.dir
+              );
             }
           } else {
             road = dataService.getCurveRoad(selectItem.vectorId);
             let curveRoadLanCount = road.getLanesCount(selectItem.dir);
-            if (selectItem.dir == 'left') {
-              curveRoadService.updateForAddSubtractLanesCount(road.vectorId, curveRoadLanCount + 1, selectItem.dir);
+            if (selectItem.dir == "left") {
+              curveRoadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                curveRoadLanCount + 1,
+                selectItem.dir
+              );
             } else {
-              curveRoadService.updateForAddSubtractLanesCount(road.vectorId, curveRoadLanCount + 1, selectItem.dir);
+              curveRoadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                curveRoadLanCount + 1,
+                selectItem.dir
+              );
             }
           }
           stateService.clearEventName();
@@ -218,18 +246,34 @@ export default class Layer {
           let road = dataService.getRoad(selectItem.vectorId);
           if (road) {
             let roadLanCount = road.getLanesCount(selectItem.dir);
-            if (selectItem.dir == 'left') {
-              roadService.updateForAddSubtractLanesCount(road.vectorId, roadLanCount - 1, selectItem.dir);
+            if (selectItem.dir == "left") {
+              roadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                roadLanCount - 1,
+                selectItem.dir
+              );
             } else {
-              roadService.updateForAddSubtractLanesCount(road.vectorId, roadLanCount - 1, selectItem.dir);
+              roadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                roadLanCount - 1,
+                selectItem.dir
+              );
             }
           } else {
             road = dataService.getCurveRoad(selectItem.vectorId);
             let curveRoadLanCount = road.getLanesCount(selectItem.dir);
-            if (selectItem.dir == 'left') {
-              curveRoadService.updateForAddSubtractLanesCount(road.vectorId, curveRoadLanCount - 1, selectItem.dir);
+            if (selectItem.dir == "left") {
+              curveRoadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                curveRoadLanCount - 1,
+                selectItem.dir
+              );
             } else {
-              curveRoadService.updateForAddSubtractLanesCount(road.vectorId, curveRoadLanCount - 1, selectItem.dir);
+              curveRoadService.updateForAddSubtractLanesCount(
+                road.vectorId,
+                curveRoadLanCount - 1,
+                selectItem.dir
+              );
             }
           }
           stateService.clearEventName();
@@ -240,12 +284,18 @@ export default class Layer {
       case VectorEvents.AddCrossPoint:
         if (focusItem && focusItem.vectorId) {
           const curveRoad = dataService.getCurveRoad(focusItem.vectorId);
-          let index = mathUtil.getIndexForCurvesPoints(position, curveRoad.points);
+          let index = mathUtil.getIndexForCurvesPoints(
+            position,
+            curveRoad.points
+          );
           if (index != -1) {
             curveRoadService.addCPoint(curveRoad, position, index);
           } else {
             const dis1 = mathUtil.getDistance(curveRoad.points[0], position);
-            const dis2 = mathUtil.getDistance(curveRoad.points[curveRoad.points.length - 1], position);
+            const dis2 = mathUtil.getDistance(
+              curveRoad.points[curveRoad.points.length - 1],
+              position
+            );
             if (dis1 > dis2) {
               index = curveRoad.points.length - 2;
               // curveRoadService.addCPoint(
@@ -260,7 +310,10 @@ export default class Layer {
             curveRoadService.addCPoint(curveRoad, position, index);
           }
           //curveRoadService.setLanes(curveRoad.vectorId);
-          curveRoadService.updateForMovePoint(curveRoad.points[index + 1].vectorId, position);
+          curveRoadService.updateForMovePoint(
+            curveRoad.points[index + 1].vectorId,
+            position
+          );
           stateService.clearEventName();
           this.history.save();
           this.renderer.autoRedraw();
@@ -341,14 +394,24 @@ export default class Layer {
       y: position.y,
     };
     const eventName = stateService.getEventName();
-    if (!this.dragging && Math.abs(X - this.startX) < minDragDis && Math.abs(Y - this.startY) < minDragDis) {
+    if (
+      !this.dragging &&
+      Math.abs(X - this.startX) < minDragDis &&
+      Math.abs(Y - this.startY) < minDragDis
+    ) {
       return;
     }
     this.dragging = true;
-    if (Math.abs(X - this.startX) > minDragDis || Math.abs(Y - this.startY) > minDragDis) {
+    if (
+      Math.abs(X - this.startX) > minDragDis ||
+      Math.abs(Y - this.startY) > minDragDis
+    ) {
       // 是否拖拽了
       if (eventName != null) {
-        if (eventName == LayerEvents.MoveMagnifier && stateService.getSelectItem().state != 0) {
+        if (
+          eventName == LayerEvents.MoveMagnifier &&
+          stateService.getSelectItem().state != 0
+        ) {
         } else {
           stateService.clearFocusItem();
           this.uiControl.focusVector = null;
@@ -369,15 +432,17 @@ export default class Layer {
         needAutoRedraw = listenLayer.start(position);
         let seleteItem = stateService.getSelectItem();
         if (seleteItem != null) {
-          console.log('选中：' + seleteItem.vectorId);
+          console.log("选中：" + seleteItem.vectorId);
         } else {
         }
         break;
       case LayerEvents.PanBackGround:
         stateService.clearItems();
         let center = {};
-        center.x = coordinate.center.x - (dx * coordinate.defaultZoom) / coordinate.zoom;
-        center.y = coordinate.center.y + (dy * coordinate.defaultZoom) / coordinate.zoom;
+        center.x =
+          coordinate.center.x - (dx * coordinate.defaultZoom) / coordinate.zoom;
+        center.y =
+          coordinate.center.y + (dy * coordinate.defaultZoom) / coordinate.zoom;
         let tempCenter = {};
         mathUtil.clonePoint(tempCenter, coordinate.center);
         mathUtil.clonePoint(coordinate.center, center);
@@ -486,12 +551,12 @@ export default class Layer {
         elementService.setNewRoad(addRoad.startInfo.position, position);
         elementService.showNewRoad();
 
-        addRoad.setNewRoadPoint('end', position);
+        addRoad.setNewRoadPoint("end", position);
         addRoad.canAdd = addRoad.canAddRoadForEnd(position);
         if (!addRoad.canAdd) {
-          elementService.setNewRoadState('error');
+          elementService.setNewRoadState("error");
         } else {
-          elementService.setNewRoadState('normal');
+          elementService.setNewRoadState("normal");
         }
         elementService.showPoint();
         this.showElementLine(position, eventName);
@@ -608,9 +673,16 @@ export default class Layer {
         let road = dataService.getRoad(draggingItem.vectorId);
         let start = dataService.getRoadPoint(road.startId);
         let end = dataService.getRoadPoint(road.endId);
-        if (Object.keys(start.getParent()).length == 1 && Object.keys(end.getParent()).length == 1) {
+        if (
+          Object.keys(start.getParent()).length == 1 &&
+          Object.keys(end.getParent()).length == 1
+        ) {
           //拖拽的路只有一条
-          moveRoad.moveRoad(draggingItem.vectorId, (dx * coordinate.defaultZoom) / coordinate.zoom, (dy * coordinate.defaultZoom) / coordinate.zoom);
+          moveRoad.moveRoad(
+            draggingItem.vectorId,
+            (dx * coordinate.defaultZoom) / coordinate.zoom,
+            (dy * coordinate.defaultZoom) / coordinate.zoom
+          );
         }
         break;
       case LayerEvents.MoveRoadPoint:
@@ -621,7 +693,10 @@ export default class Layer {
         });
         if (
           listenLayer.modifyPoint &&
-          (listenLayer.modifyPoint.linkedRoadPointId || listenLayer.modifyPoint.linkedRoadId || listenLayer.modifyPoint.linkedRoadPointIdX || listenLayer.modifyPoint.linkedRoadPointIdY)
+          (listenLayer.modifyPoint.linkedRoadPointId ||
+            listenLayer.modifyPoint.linkedRoadId ||
+            listenLayer.modifyPoint.linkedRoadPointIdX ||
+            listenLayer.modifyPoint.linkedRoadPointIdY)
         ) {
           position = {
             x: listenLayer.modifyPoint.x,
@@ -631,7 +706,11 @@ export default class Layer {
           listenLayer.modifyPoint = null;
         }
 
-        let flag = moveRoad.moveingRoadPoint(draggingItem.vectorId, position, listenLayer.modifyPoint);
+        let flag = moveRoad.moveingRoadPoint(
+          draggingItem.vectorId,
+          position,
+          listenLayer.modifyPoint
+        );
         if (!flag) {
           elementService.hideAll();
         } else {
@@ -668,19 +747,23 @@ export default class Layer {
         elementService.setNewRoad(addRoad.startInfo.position, position);
         elementService.showNewRoad();
 
-        addRoad.setNewRoadPoint('end', position);
+        addRoad.setNewRoadPoint("end", position);
         addRoad.canAdd = addRoad.canAddRoadForEnd(position);
         if (!addRoad.canAdd) {
-          elementService.setNewRoadState('error');
+          elementService.setNewRoadState("error");
         } else {
-          elementService.setNewRoadState('normal');
+          elementService.setNewRoadState("normal");
         }
         elementService.showPoint();
         this.showElementLine(position, eventName);
         break;
       case LayerEvents.MoveCurveRoad:
         needAutoRedraw = true;
-        moveRoad.moveCurveRoad(draggingItem.vectorId, (dx * coordinate.defaultZoom) / coordinate.zoom, (dy * coordinate.defaultZoom) / coordinate.zoom);
+        moveRoad.moveCurveRoad(
+          draggingItem.vectorId,
+          (dx * coordinate.defaultZoom) / coordinate.zoom,
+          (dy * coordinate.defaultZoom) / coordinate.zoom
+        );
         break;
       case LayerEvents.MoveCurveRoadPoint:
         if (!draggingItem || !draggingItem.vectorId) {
@@ -723,13 +806,25 @@ export default class Layer {
         break;
       case LayerEvents.MoveCurveEdge:
         if (listenLayer.modifyPoint) {
-          moveRoad.moveCurveEdge(draggingItem.vectorId, listenLayer.modifyPoint.selectIndex, position);
+          moveRoad.moveCurveEdge(
+            draggingItem.vectorId,
+            listenLayer.modifyPoint.selectIndex,
+            position
+          );
         }
         needAutoRedraw = true;
         break;
       case LayerEvents.MoveLine:
         if (draggingItem != null) {
-          moveLine.moveLine(draggingItem.vectorId, (dx * coordinate.defaultZoom) / coordinate.zoom, (dy * coordinate.defaultZoom) / coordinate.zoom);
+          let flag = moveLine.moveLine(
+            draggingItem.vectorId,
+            (dx * coordinate.defaultZoom) / coordinate.zoom,
+            (dy * coordinate.defaultZoom) / coordinate.zoom
+          );
+          if (!flag) {
+            this.lastX = this.lastX - dx / coordinate.ratio;
+            this.lastY = this.lastY - dy / coordinate.ratio;
+          }
           needAutoRedraw = true;
         }
         break;
@@ -771,16 +866,33 @@ export default class Layer {
         break;
       case LayerEvents.MoveCurveLine:
         if (draggingItem != null) {
-          moveLine.moveCurveLine(draggingItem.vectorId, (dx * coordinate.defaultZoom) / coordinate.zoom, (dy * coordinate.defaultZoom) / coordinate.zoom);
+          moveLine.moveCurveLine(
+            draggingItem.vectorId,
+            (dx * coordinate.defaultZoom) / coordinate.zoom,
+            (dy * coordinate.defaultZoom) / coordinate.zoom
+          );
           needAutoRedraw = true;
         }
         break;
       case LayerEvents.MoveCircle:
         if (draggingItem != null) {
           if (draggingItem.state == -1) {
-            moveCircle.moveFull(draggingItem.vectorId, (dx * coordinate.defaultZoom) / coordinate.zoom, (dy * coordinate.defaultZoom) / coordinate.zoom);
-          } else if (draggingItem.state == 0 || draggingItem.state == 1 || draggingItem.state == 2 || draggingItem.state == 3) {
-            moveCircle.movePoint(position, draggingItem.vectorId, draggingItem.state);
+            moveCircle.moveFull(
+              draggingItem.vectorId,
+              (dx * coordinate.defaultZoom) / coordinate.zoom,
+              (dy * coordinate.defaultZoom) / coordinate.zoom
+            );
+          } else if (
+            draggingItem.state == 0 ||
+            draggingItem.state == 1 ||
+            draggingItem.state == 2 ||
+            draggingItem.state == 3
+          ) {
+            moveCircle.movePoint(
+              position,
+              draggingItem.vectorId,
+              draggingItem.state
+            );
           } else {
             debugger;
           }
@@ -790,9 +902,22 @@ export default class Layer {
       case LayerEvents.MoveElliptic:
         if (draggingItem != null) {
           if (draggingItem.state == -1) {
-            moveElliptic.moveFull(draggingItem.vectorId, (dx * coordinate.defaultZoom) / coordinate.zoom, (dy * coordinate.defaultZoom) / coordinate.zoom);
-          } else if (draggingItem.state == 0 || draggingItem.state == 1 || draggingItem.state == 2 || draggingItem.state == 3) {
-            moveElliptic.movePoint(position, draggingItem.vectorId, draggingItem.state);
+            moveElliptic.moveFull(
+              draggingItem.vectorId,
+              (dx * coordinate.defaultZoom) / coordinate.zoom,
+              (dy * coordinate.defaultZoom) / coordinate.zoom
+            );
+          } else if (
+            draggingItem.state == 0 ||
+            draggingItem.state == 1 ||
+            draggingItem.state == 2 ||
+            draggingItem.state == 3
+          ) {
+            moveElliptic.movePoint(
+              position,
+              draggingItem.vectorId,
+              draggingItem.state
+            );
           } else {
             debugger;
           }
@@ -811,14 +936,22 @@ export default class Layer {
           if (draggingItem.state == -1) {
             moveSVG.moveFullSVG(position, draggingItem.vectorId);
           } else {
-            moveSVG.movePoint(position, draggingItem.vectorId, draggingItem.state);
+            moveSVG.movePoint(
+              position,
+              draggingItem.vectorId,
+              draggingItem.state
+            );
           }
         }
         break;
       case LayerEvents.MoveMagnifier:
         needAutoRedraw = true;
         if (draggingItem != null) {
-          moveMagnifier.moveFullMagnifier(position, draggingItem.vectorId, draggingItem.state);
+          moveMagnifier.moveFullMagnifier(
+            position,
+            draggingItem.vectorId,
+            draggingItem.state
+          );
         }
         break;
     }
@@ -894,19 +1027,40 @@ export default class Layer {
             exceptPointId: draggingItem.vectorId,
             exceptRoadIds: point.parent,
           });
-          if (listenLayer.modifyPoint && listenLayer.modifyPoint.hasOwnProperty('linkedRoadPointId')) {
-            moveRoad.moveTo(draggingItem.vectorId, listenLayer.modifyPoint.linkedRoadPointId);
-          } else if (listenLayer.modifyPoint && (listenLayer.modifyPoint.linkedRoadPointIdX || listenLayer.modifyPoint.linkedRoadPointIdY)) {
+          if (
+            listenLayer.modifyPoint &&
+            listenLayer.modifyPoint.hasOwnProperty("linkedRoadPointId")
+          ) {
+            moveRoad.moveTo(
+              draggingItem.vectorId,
+              listenLayer.modifyPoint.linkedRoadPointId
+            );
+          } else if (
+            listenLayer.modifyPoint &&
+            (listenLayer.modifyPoint.linkedRoadPointIdX ||
+              listenLayer.modifyPoint.linkedRoadPointIdY)
+          ) {
             mathUtil.clonePoint(point, listenLayer.modifyPoint);
-          } else if (listenLayer.modifyPoint && listenLayer.modifyPoint.hasOwnProperty('linkedRoadId')) {
+          } else if (
+            listenLayer.modifyPoint &&
+            listenLayer.modifyPoint.hasOwnProperty("linkedRoadId")
+          ) {
             point = roadPointService.create({
               x: listenLayer.modifyPoint.x,
               y: listenLayer.modifyPoint.y,
             });
-            roadService.splitRoad(listenLayer.modifyPoint.linkedRoadId, point.vectorId, 'start');
+            roadService.splitRoad(
+              listenLayer.modifyPoint.linkedRoadId,
+              point.vectorId,
+              "start"
+            );
             moveRoad.moveTo(draggingItem.vectorId, point.vectorId);
           } else if (moveRoad.splitRoadId != null) {
-            roadService.splitRoad(moveRoad.splitRoadId, draggingItem.vectorId, 'start');
+            roadService.splitRoad(
+              moveRoad.splitRoadId,
+              draggingItem.vectorId,
+              "start"
+            );
           }
           //draggingItem.vectorId所在的墙面与其他墙角相交
           moveRoad.updateForAbsorbRoadPoints();
@@ -1049,7 +1203,11 @@ export default class Layer {
         this.history.save();
         break;
       case LayerEvents.AddPoint:
-        if (Settings.selectBasePointId != null && (Settings.selectLocationMode == Constant.angleLocationMode || Settings.selectLocationMode == Constant.allLocationMode)) {
+        if (
+          Settings.selectBasePointId != null &&
+          (Settings.selectLocationMode == Constant.angleLocationMode ||
+            Settings.selectLocationMode == Constant.allLocationMode)
+        ) {
           this.uiControl.showConfirm();
           needAutoRedraw = true;
           elementService.hideAll();
@@ -1062,7 +1220,7 @@ export default class Layer {
         break;
     }
 
-    this.setEventName('mouseUp');
+    this.setEventName("mouseUp");
     stateService.clearDraggingItem();
     if (needAutoRedraw) {
       this.renderer.autoRedraw();
@@ -1072,9 +1230,11 @@ export default class Layer {
   onWheel(e) {
     e.preventDefault();
     const type = e.type;
-    if (type == 'DOMMouseScroll' || type == 'mousewheel') {
+    if (type == "DOMMouseScroll" || type == "mousewheel") {
       // 当在canvas用滚轮滚动时
-      const delta = e.wheelDelta ? (e.wheelDelta / 120) * 20 : (-(e.detail || 0) / 3) * 20;
+      const delta = e.wheelDelta
+        ? (e.wheelDelta / 120) * 20
+        : (-(e.detail || 0) / 3) * 20;
       const zoom = coordinate.zoom + delta;
       let X = e.offsetX || e.layerX;
       let Y = e.offsetY || e.layerY;
@@ -1111,10 +1271,10 @@ export default class Layer {
   //测试用
   onKeydown(e) {
     let focusItem = stateService.getFocusItem();
-    let dir = 'left';
+    let dir = "left";
     if (focusItem) {
-      console.log('键盘(foucus有效)：' + e.code);
-      if (e.code == 'Delete') {
+      console.log("键盘(foucus有效)：" + e.code);
+      if (e.code == "Delete") {
         //删除
         const road = dataService.getRoad(focusItem.vectorId);
         roadService.subtraRoadFromIntersect(road.startId, focusItem.vectorId);
@@ -1125,105 +1285,142 @@ export default class Layer {
         this.history.save();
       }
       //加宽
-      else if (e.code == 'KeyA') {
+      else if (e.code == "KeyA") {
         let road = dataService.getRoad(focusItem.vectorId);
         if (road) {
           roadService.updateForWidth(road.vectorId, road.leftWidth + 50, dir);
         } else {
           road = dataService.getCurveRoad(focusItem.vectorId);
-          curveRoadService.updateForWidth(road.vectorId, road.leftWidth + 50, dir);
+          curveRoadService.updateForWidth(
+            road.vectorId,
+            road.leftWidth + 50,
+            dir
+          );
         }
 
         this.renderer.autoRedraw();
         this.history.save();
       }
       //变窄
-      else if (e.code == 'KeyB') {
+      else if (e.code == "KeyB") {
         let road = dataService.getRoad(focusItem.vectorId);
         if (road) {
           roadService.updateForWidth(road.vectorId, road.leftWidth - 25, dir);
         } else {
           road = dataService.getCurveRoad(focusItem.vectorId);
-          curveRoadService.updateForWidth(road.vectorId, road.leftWidth - 25, dir);
+          curveRoadService.updateForWidth(
+            road.vectorId,
+            road.leftWidth - 25,
+            dir
+          );
         }
         this.renderer.autoRedraw();
         this.history.save();
       }
       //添加左车道
-      else if (e.code == 'KeyQ') {
+      else if (e.code == "KeyQ") {
         let road = dataService.getRoad(focusItem.vectorId);
         if (road) {
-          roadService.updateForAddSubtractLanesCount(focusItem.vectorId, road.leftDrivewayCount + 1, 'left');
+          roadService.updateForAddSubtractLanesCount(
+            focusItem.vectorId,
+            road.leftDrivewayCount + 1,
+            "left"
+          );
         } else {
           road = dataService.getCurveRoad(focusItem.vectorId);
           curveRoadService.updateForAddSubtractLanesCount(
             road,
             road.leftDrivewayCount + 1, //rightDrivewayCount
-            'left'
+            "left"
           );
         }
         this.renderer.autoRedraw();
         this.history.save();
       }
       //减少左车道
-      else if (e.code == 'KeyW') {
+      else if (e.code == "KeyW") {
         let road = dataService.getRoad(focusItem.vectorId);
         if (road) {
-          roadService.updateForAddSubtractLanesCount(focusItem.vectorId, road.leftDrivewayCount - 1, 'left');
+          roadService.updateForAddSubtractLanesCount(
+            focusItem.vectorId,
+            road.leftDrivewayCount - 1,
+            "left"
+          );
         } else {
           road = dataService.getCurveRoad(focusItem.vectorId);
           curveRoadService.updateForAddSubtractLanesCount(
             road,
             road.leftDrivewayCount - 1, //rightDrivewayCount
-            'left'
+            "left"
           );
         }
         this.renderer.autoRedraw();
         this.history.save();
       }
       //添加右车道
-      else if (e.code == 'KeyE') {
+      else if (e.code == "KeyE") {
         let road = dataService.getRoad(focusItem.vectorId);
         if (road) {
-          roadService.updateForAddSubtractLanesCount(focusItem.vectorId, road.rightDrivewayCount + 1, 'right');
+          roadService.updateForAddSubtractLanesCount(
+            focusItem.vectorId,
+            road.rightDrivewayCount + 1,
+            "right"
+          );
         } else {
           road = dataService.getCurveRoad(focusItem.vectorId);
           curveRoadService.updateForAddSubtractLanesCount(
             road,
             road.rightDrivewayCount + 1, //rightDrivewayCount
-            'right'
+            "right"
           );
         }
         this.renderer.autoRedraw();
         this.history.save();
       }
       //减少右车道
-      else if (e.code == 'KeyR') {
+      else if (e.code == "KeyR") {
         let road = dataService.getRoad(focusItem.vectorId);
         if (road) {
-          roadService.updateForAddSubtractLanesCount(focusItem.vectorId, road.rightDrivewayCount - 1, 'right');
+          roadService.updateForAddSubtractLanesCount(
+            focusItem.vectorId,
+            road.rightDrivewayCount - 1,
+            "right"
+          );
         } else {
           road = dataService.getCurveRoad(focusItem.vectorId);
           curveRoadService.updateForAddSubtractLanesCount(
             road,
             road.rightDrivewayCount - 1, //rightDrivewayCount
-            'right'
+            "right"
           );
         }
         this.renderer.autoRedraw();
         this.history.save();
       }
       //弯路添加控制点
-      else if (e.code == 'KeyT') {
+      else if (e.code == "KeyT") {
         const curveRoad = dataService.getCurveRoad(focusItem.vectorId);
-        let index = mathUtil.getIndexForCurvesPoints(this.mousePosition, curveRoad.points);
+        let index = mathUtil.getIndexForCurvesPoints(
+          this.mousePosition,
+          curveRoad.points
+        );
         if (index != -1) {
           curveRoadService.addCPoint(curveRoad, this.mousePosition, index);
         } else {
-          const dis1 = mathUtil.getDistance(curveRoad.points[0], this.mousePosition);
-          const dis2 = mathUtil.getDistance(curveRoad.points[curveRoad.points.length - 1], this.mousePosition);
+          const dis1 = mathUtil.getDistance(
+            curveRoad.points[0],
+            this.mousePosition
+          );
+          const dis2 = mathUtil.getDistance(
+            curveRoad.points[curveRoad.points.length - 1],
+            this.mousePosition
+          );
           if (dis1 > dis2) {
-            curveRoadService.addCPoint(curveRoad, this.mousePosition, curveRoad.points.length - 2);
+            curveRoadService.addCPoint(
+              curveRoad,
+              this.mousePosition,
+              curveRoad.points.length - 2
+            );
           } else {
             curveRoadService.addCPoint(curveRoad, this.mousePosition, 1);
           }
@@ -1232,7 +1429,7 @@ export default class Layer {
         this.history.save();
       }
       //弯路删除控制点
-      else if (e.code == 'KeyY') {
+      else if (e.code == "KeyY") {
         const curvePoint = dataService.getCurveRoadPoint(focusItem.vectorId);
         const curveRoad = dataService.getCurveRoad(curvePoint.parent);
         curveRoadService.subCPoint(curveRoad, curvePoint.getIndex());
@@ -1240,14 +1437,14 @@ export default class Layer {
         this.history.save();
       }
     } else {
-      console.log('键盘(foucus无效)：' + e.code);
+      console.log("键盘(foucus无效)：" + e.code);
     }
   }
 
   setEventName(eventType) {
     let eventName = stateService.getEventName();
 
-    if (eventType == 'mouseDown') {
+    if (eventType == "mouseDown") {
       if (eventName == null) {
         const selectItem = stateService.getSelectItem();
         if (selectItem == null) {
@@ -1286,7 +1483,7 @@ export default class Layer {
           stateService.setEventName(LayerEvents.MoveSVG);
         }
       }
-    } else if (eventType == 'mouseUp') {
+    } else if (eventType == "mouseUp") {
       if (eventName == LayerEvents.AddingRoad) {
         if (Settings.isMobile) {
           stateService.clearEventName();
@@ -1314,7 +1511,8 @@ export default class Layer {
       } else if (
         eventName == LayerEvents.AddPoint &&
         Settings.selectBasePointId != null &&
-        (Settings.selectLocationMode == Constant.angleLocationMode || Settings.selectLocationMode == Constant.allLocationMode)
+        (Settings.selectLocationMode == Constant.angleLocationMode ||
+          Settings.selectLocationMode == Constant.allLocationMode)
       ) {
       } else {
         stateService.clearEventName();
@@ -1331,7 +1529,10 @@ export default class Layer {
 
   stopAddVector() {
     let eventName = stateService.getEventName();
-    if (eventName != LayerEvents.AddingRoad && eventName != LayerEvents.AddingLine) {
+    if (
+      eventName != LayerEvents.AddingRoad &&
+      eventName != LayerEvents.AddingLine
+    ) {
       stateService.clearEventName();
     } else if (eventName == LayerEvents.AddingRoad) {
       stateService.setEventName(LayerEvents.AddRoad);
@@ -1466,23 +1667,57 @@ export default class Layer {
     let otherPoint1 = null;
     let otherPoint2 = null;
     if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedRoadPointIdX) {
-      otherPoint1 = dataService.getRoadPoint(listenLayer.modifyPoint.linkedRoadPointIdX);
-    } else if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedCurveRoadPointIdX) {
-      otherPoint1 = dataService.getCurveRoadPoint(listenLayer.modifyPoint.linkedCurvePointIdX);
-    } else if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedPointIdX) {
-      otherPoint1 = dataService.getPoint(listenLayer.modifyPoint.linkedPointIdX);
-    } else if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedCurvePointIdX) {
-      otherPoint1 = dataService.getCurvePoint(listenLayer.modifyPoint.linkedCurvePointIdX);
+      otherPoint1 = dataService.getRoadPoint(
+        listenLayer.modifyPoint.linkedRoadPointIdX
+      );
+    } else if (
+      listenLayer.modifyPoint &&
+      listenLayer.modifyPoint.linkedCurveRoadPointIdX
+    ) {
+      otherPoint1 = dataService.getCurveRoadPoint(
+        listenLayer.modifyPoint.linkedCurvePointIdX
+      );
+    } else if (
+      listenLayer.modifyPoint &&
+      listenLayer.modifyPoint.linkedPointIdX
+    ) {
+      otherPoint1 = dataService.getPoint(
+        listenLayer.modifyPoint.linkedPointIdX
+      );
+    } else if (
+      listenLayer.modifyPoint &&
+      listenLayer.modifyPoint.linkedCurvePointIdX
+    ) {
+      otherPoint1 = dataService.getCurvePoint(
+        listenLayer.modifyPoint.linkedCurvePointIdX
+      );
     }
 
     if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedRoadPointIdY) {
-      otherPoint2 = dataService.getRoadPoint(listenLayer.modifyPoint.linkedRoadPointIdY);
-    } else if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedCurvePointIdY) {
-      otherPoint2 = dataService.getCurveRoadPoint(listenLayer.modifyPoint.linkedCurvePointIdY);
-    } else if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedPointIdY) {
-      otherPoint2 = dataService.getPoint(listenLayer.modifyPoint.linkedPointIdY);
-    } else if (listenLayer.modifyPoint && listenLayer.modifyPoint.linkedCurvePointIdY) {
-      otherPoint2 = dataService.getCurvePoint(listenLayer.modifyPoint.linkedCurvePointIdY);
+      otherPoint2 = dataService.getRoadPoint(
+        listenLayer.modifyPoint.linkedRoadPointIdY
+      );
+    } else if (
+      listenLayer.modifyPoint &&
+      listenLayer.modifyPoint.linkedCurvePointIdY
+    ) {
+      otherPoint2 = dataService.getCurveRoadPoint(
+        listenLayer.modifyPoint.linkedCurvePointIdY
+      );
+    } else if (
+      listenLayer.modifyPoint &&
+      listenLayer.modifyPoint.linkedPointIdY
+    ) {
+      otherPoint2 = dataService.getPoint(
+        listenLayer.modifyPoint.linkedPointIdY
+      );
+    } else if (
+      listenLayer.modifyPoint &&
+      listenLayer.modifyPoint.linkedCurvePointIdY
+    ) {
+      otherPoint2 = dataService.getCurvePoint(
+        listenLayer.modifyPoint.linkedCurvePointIdY
+      );
     }
 
     let otherPoint = {};
@@ -1492,7 +1727,7 @@ export default class Layer {
     }
     if (otherPoint2) {
       otherPoint.y = otherPoint2.y;
-      if (!otherPoint.hasOwnProperty('x')) {
+      if (!otherPoint.hasOwnProperty("x")) {
         otherPoint.x = otherPoint2.x;
       }
     }

src/graphic/Service/DataService.js

@@ -183,6 +183,15 @@ export class DataService {
     }
   }
 
+  deletePointParent(pointId, lineId) {
+    if (pointId && lineId) {
+      let point = this.getPoint(pointId);
+      if (point) {
+        delete point.parent[lineId];
+      }
+    }
+  }
+
   //圆圈
   getCircles() {
     return this.vectorData.circles;

src/graphic/enum/VectorCategory.js

@@ -8,6 +8,7 @@ const VectorCategory = {
     GuideLine: "GuideLine",
     PositionLine: "PositionLine", //定位线。基准点与待测点相连的线，或者与待测基准点相连的线
     GuidePositionLine: "GuidePositionLine", //定位辅助线
+    ExtendedPositionLine: "ExtendedPositionLine", //定位延长线
   },
   Point: {
     BasePoint: "BasePoint", //基准点