修正板件因为多段线闭合的问题导致的拉伸夹点(中点)错误

src/DatabaseServices/Board.ts

@@ -1,7 +1,7 @@
 import * as THREE from 'three';
-import { ExtrudeGeometry, Matrix4, Mesh, MeshNormalMaterial, Object3D, Vector3 } from 'three';
+import { ExtrudeGeometry, Matrix4, Mesh, MeshNormalMaterial, Object3D, Vector2, Vector3 } from 'three';
 import { Box3Ext } from '../Geometry/Box';
-import { rotatePoint, equaln } from '../Geometry/GeUtils';
+import { equaln, rotatePoint } from '../Geometry/GeUtils';
 import { RenderType } from '../GraphicsSystem/Enum';
 import { BoardProcessOption } from '../UI/Store/BoardInterface';
 import { Factory } from './CADFactory';
@@ -9,9 +9,9 @@ import { CADFile } from './CADFile';
 import { Circle } from './Circle';
 import { Contour } from './Contour';
 import { Entity } from './Entity';
-import { Line } from './Line';
 import { ObjectId } from './ObjectId';
 import { DbPhysicalMaterial } from './PhysicalMaterial';
+import { Polyline } from './Polyline';
 import { Shape } from './Shape';
 
 export enum BoardType
@@ -76,19 +76,14 @@ export class Board extends Entity
         this.m_Width = width;
         this.m_Thickness = thickness;
 
-        let p1 = new Vector3();
-        let p2 = new Vector3(width, 0);
-        let p3 = new Vector3(width, length);
-        let p4 = new Vector3(0, length);
-
-        let l1 = new Line(p1, p2);
-        let l2 = new Line(p2, p3);
-        let l3 = new Line(p3, p4);
-        let l4 = new Line(p4, p1);
-
-        this.m_Shape = new Shape(
-            Contour.CreateContour([l1, l2, l3, l4])
-        )
+        let pl = new Polyline([
+            { pt: new Vector2(), bul: 0 },
+            { pt: new Vector2(width, 0), bul: 0 },
+            { pt: new Vector2(width, length), bul: 0 },
+            { pt: new Vector2(0, length), bul: 0 },
+        ]);
+        pl.CloseMark = true;
+        this.m_Shape = new Shape(Contour.CreateContour([pl]));
     }
     static CreateBoard(length: number, width: number, thickness: number, boardType: BoardType = BoardType.Layer)
     {

src/DatabaseServices/Contour.ts

@@ -17,8 +17,11 @@ export class Contour
         let closeCurve = Contour.Combine(cus) as Polyline | Circle;
         if (closeCurve && closeCurve.IsClose)
         {
-            if (closeCurve instanceof Polyline)
+            if (closeCurve instanceof Polyline && closeCurve.CloseMark === false)
+            {
                 closeCurve.CloseMark = true;
+                closeCurve.RemoveVertexAt(closeCurve.NumberOfVertices - 1);
+            }
 
             let c = new Contour();
             c.m_Curve = closeCurve;