拉伸实体轮廓应用时优化CloseMark

src/DatabaseServices/Extrude.ts

@@ -1,5 +1,5 @@
 import { Box3, ExtrudeGeometry, ExtrudeGeometryOptions, Geometry, LineSegments, Matrix3, Matrix4, Mesh, MeshStandardMaterial, Object3D, Vector3 } from "three";
-import { arrayClone, arrayRemoveIf, arraySortByNumber } from "../Common/ArrayExt";
+import { arrayClone, arrayLast, arrayRemoveIf, arraySortByNumber } from "../Common/ArrayExt";
 import { ColorMaterial } from "../Common/ColorPalette";
 import { equalCurve } from "../Common/CurveUtils";
 import { DisposeThreeObj } from "../Common/Dispose";
@@ -8,7 +8,7 @@ import { ObjectSnapMode } from "../Editor/ObjectSnapMode";
 import { boardUVGenerator } from "../Geometry/BoardUVGenerator";
 import { BSPGroupParse } from "../Geometry/BSPGroupParse";
 import { EdgesGeometry2 } from "../Geometry/EdgeGeometry";
-import { cZeroVec, equaln, equalv3, isIntersect, isParallelTo, MoveMatrix } from "../Geometry/GeUtils";
+import { cZeroVec, equaln, equalv2, equalv3, isIntersect, isParallelTo, MoveMatrix } from "../Geometry/GeUtils";
 import { CSG } from "../Geometry/ThreeCSG";
 import { GraphicsConfig } from "../GraphicsSystem/Config";
 import { RenderType } from "../GraphicsSystem/RenderType";
@@ -240,10 +240,18 @@ export class ExtureSolid extends Entity
      */
     SetContourCurve(curve: ExtureContourCurve)
     {
+        if (!curve.IsClose) return;
+
+        if (curve instanceof Polyline)
+        {
+            curve.CloseMark = true;
+            let pts = curve.LineData;
+            if (equalv2(pts[0].pt, arrayLast(pts).pt))
+                pts.pop();
+        }
+
         this.WriteAllObjectRecord();
         this.contourCurve = curve;
-        if (this.contourCurve instanceof Polyline)
-            this.contourCurve.CloseMark = true;
         this.CheckContourCurve();
         this.Update();
     }