修复:精度问题导致的层板钉方向相反

src/Add-on/DrawBoard/ActivityLayerBoardTool.ts

@@ -194,7 +194,7 @@ class ActivityLayerBoardTool
         {
             let faces = BoardGetFace.GetAllSidesFaces(br, true);
             let vecIndexMap: Map<Vector3, number[]> = new Map();
-            let xVec = new Vector3().setFromMatrixColumn(br.OCS, 0);
+            let xVec = new Vector3().setFromMatrixColumn(br.OCSNoClone, 0);
             if (option?.name)
                 br.Name = option.name;
 
@@ -228,7 +228,7 @@ class ActivityLayerBoardTool
                         nail.ColorIndex = 4;
                         let fNor = face.Normal;
                         let ang = -angleTo(fNor, otherBoard.Normal.negate());
-                        if (equaln(Math.abs(ang), Math.PI))
+                        if (equaln(Math.abs(ang), Math.PI, 1e-3))
                             ang = 0;
 
                         let xDist = nailOption.front;