优化:捕捉时返回捕捉到的实体

src/Add-on/DrawLine.ts

@@ -160,14 +160,20 @@ export class DrawLine implements Command
                 //第一个是切点 第二个也是选切点
                 if (ptRes.SnapMode === ObjectSnapMode.Tan && firstTangeCircle && pts.length === 1)
                 {
-                    let pick = new SelectPick(app.Viewer, app.Viewer.WorldToScreen(ptRes.Point.clone()), app.Editor.GetPointServices.snapServices.SnapSize);
+                    if (!ptRes.SnapEntity)
-                    pick.Select(app.Viewer.VisibleObjects, { filterTypes: [Circle, Arc] });
-                    let secondTangeCircle: Circle = (pick.SelectEntityList as Circle[]).find(c => c.PtInCurve(ptRes.Point));
-
-                    if (secondTangeCircle)
                     {
+                        AppToaster.show({
+                            message: "程序错误!无法获取捕捉圆,请重试!",
+                            timeout: 3000,
+                            intent: Intent.WARNING,
+                        });
+                        continue;
+                    }
+                    else
+                    {
+                        let secondTangeCircle = ptRes.SnapEntity as Circle;
                         //计算最优切线
-                        let lines = CircleInternalTangentLines(firstTangeCircle as Circle, secondTangeCircle as Circle).concat(CircleOuterTangentLines(firstTangeCircle as Circle, secondTangeCircle as Circle));
+                        let lines = CircleInternalTangentLines(firstTangeCircle as Circle, secondTangeCircle).concat(CircleOuterTangentLines(firstTangeCircle as Circle, secondTangeCircle as Circle));
                         if (!lines?.length)
                         {
                             AppToaster.show({
@@ -191,9 +197,7 @@ export class DrawLine implements Command
                                 nearestObjectIndex = i;
                             }
                         }
-
                         line = lines[nearestObjectIndex];
-                    }
 
                         app.LayoutTool.AppendDatabaseSpace(line);
 
@@ -203,6 +207,7 @@ export class DrawLine implements Command
                         JigUtils.Destroy();
                         continue;
                     }
+                }
 
                 //正常画线
                 app.LayoutTool.AppendDatabaseSpace(line);

src/DatabaseServices/Entity/Ellipse.ts

@@ -447,6 +447,7 @@ export class Ellipse extends Curve
                     {
                         return getTanPtsOnEllipse(this, lastPoint);
                     }
+                    return [];
                 }
             default:
                 return [];

src/Editor/GetPointServices.ts

@@ -55,7 +55,10 @@ export class GetPointServices implements EditorService
                 return;
             }
 
-            this.ReturnPoint(this.curPoint, this.curPointIsSnap ? this.snapServices.SnapType : undefined);
+            this.ReturnPoint(this.curPoint,
+                this.curPointIsSnap ? this.snapServices.SnapType : undefined,
+                this.curPointIsSnap ? this.snapServices.SnapEntity : undefined,
+            );
             return true;
         }
         else if (e.button === MouseKey.Right)
@@ -480,7 +483,7 @@ export class GetPointServices implements EditorService
     }
 
     //调用promis的回调.
-    protected ReturnPoint(p: Vector3, snapMode?: ObjectSnapMode)
+    protected ReturnPoint(p: Vector3, snapMode?: ObjectSnapMode, snapEntity?: Entity)
     {
         let retValue = new PromptPointResult();
 
@@ -500,6 +503,7 @@ export class GetPointServices implements EditorService
         retValue.intersection = this.intersection;
 
         retValue.SnapMode = snapMode;
+        retValue.SnapEntity = snapEntity;
 
         this.lastPoint = p;
 
@@ -545,6 +549,7 @@ export class GetPointServices implements EditorService
         app.Viewer.PreViewer.Cursor.IsThreeMode = this._oldIsThreeState;
         app.Viewer.PreViewer.Cursor.Mode = CursorMode.None;
         this.snapServices.SnapModeEnable = this.snapModeCurrent;
+        this.snapServices.SnapEntity = undefined;
 
         this._prompt = undefined;
         this.intersection = undefined;

src/Editor/PromptResult.ts

@@ -41,7 +41,7 @@ export class PromptResult
 export class PromptPointResult extends PromptResult
 {
     SnapMode: ObjectSnapMode;
-    // SnapEntity: Entity; TODO:
+    SnapEntity: Entity;
     intersection: Intersection;
     private _point: Vector3;
     /**

src/Editor/SnapServices.ts

@@ -62,7 +62,8 @@ interface SupportSnapEntity
 interface SupportSnapPoint
 {
     Point?: Vector3;
-    Entitys?: SupportSnapEntity[];
+    Entity?: Entity;//捕捉到的实体
+    Entitys?: SupportSnapEntity[];//辅助捕捉实体
 }
 
 //正交捕捉轴
@@ -82,6 +83,8 @@ export class SnapServices
     SnapModeEnable: ObjectSnapMode = ObjectSnapMode.All;
     EnablePolarSnap: boolean = true;//允许极轴捕捉
     CustomAxis: Vector3[] = [];//自定义捕捉轴
+
+    SnapEntity: Entity;//当前捕捉点来自的实体(仅当切线捕捉时有效)
     private _SnapType: ObjectSnapMode = ObjectSnapMode.None;//当前点的捕捉类型
     private _DynPrompt: PromptBlock;
     private _HasBasePoint: boolean = false;
@@ -235,6 +238,7 @@ export class SnapServices
     {
         this._SupportExtLinePts.length = 0;
         this._SnapType = ObjectSnapMode.None;
+        this.SnapEntity = undefined;
 
         if (this.Disabled)
             return;
@@ -334,6 +338,7 @@ export class SnapServices
                         if (SnapPoint(pv, vcsP, this.SnapSize))
                         {
                             this.SnapType = ObjectSnapMode.Tan;
+                            this.SnapEntity = e;
                             return p;
                         }
                     }
@@ -389,6 +394,7 @@ export class SnapServices
                 );
 
                 this.SnapType = mode;
+                this.SnapEntity = snapData.Entity;
                 return snapData.Point;
             }
         }
@@ -399,9 +405,9 @@ export class SnapServices
         {
             let cus = sel.SelectEntityList.filter(e => e instanceof Curve || e instanceof RoomWallBase) as Curve[];
             let cuIns = new CurveIntersection(cus);
-            for (let [, pMap] of cuIns.intersect)
+            for (let [e1, pMap] of cuIns.intersect)
             {
-                for (let [, pts] of pMap)
+                for (let [e2, pts] of pMap)
                 {
                     for (let p of pts)
                     {
@@ -497,6 +503,7 @@ export class SnapServices
                 {
                     minZ = z;
                     snapData.Point = p;
+                    snapData.Entity = en;
                     snapData.Entitys = this.GetSupportEntity(mode, en, baseP, p, pIndex);
                 }
                 else if (dist < 2 * this.SnapSize ** 2 && dist < minDistance)
@@ -504,6 +511,7 @@ export class SnapServices
                     minZ = z;
                     minDistance = dist;
                     snapData.Point = p;
+                    snapData.Entity = en;
                     snapData.Entitys = this.GetSupportEntity(mode, en, baseP, p, pIndex);
                 }
             }