修复:平行线倒角避免出现Z=-1的圆弧

src/Add-on/Fillet.ts

@@ -156,13 +156,11 @@ export class CommandFillet implements Command
                 if (enRes1.Entity instanceof RoomWallBase)
                 {
                     let wall = new RoomWallArc(res.arc.Center, res.arc.Radius, res.arc.StartAngle, res.arc.EndAngle, res.arc.IsClockWise, enRes1.Entity.Thickness);
-                    wall.OCS = res.arc.OCSNoClone;
                     app.Database.ModelSpace.Append(wall);
                 }
                 else if (enRes2.Entity instanceof RoomWallBase)
                 {
                     let wall = new RoomWallArc(res.arc.Center, res.arc.Radius, res.arc.StartAngle, res.arc.EndAngle, res.arc.IsClockWise, enRes2.Entity.Thickness);
-                    wall.OCS = res.arc.OCSNoClone;
                     app.Database.ModelSpace.Append(wall);
                 }
                 else

src/Add-on/FilletUtils.ts

@@ -565,8 +565,6 @@ export class FilletUtils
         if (isParallelTo(vec, l1Derv))
             return;
 
-        let planeNormal = vec.cross(l1Derv).normalize();
-
         let par1 = l2.GetClosestAtPoint(l1.StartPoint, true).param;
         let par2 = l2.GetClosestAtPoint(l1.EndPoint, true).param;
         if (!isIntersect2(0, 1, par1, par2))
@@ -609,8 +607,12 @@ export class FilletUtils
         //平面矩阵
         let xVec = new Vector3();
         let yVec = new Vector3();
-        Orbit.ComputUpDirection(planeNormal, yVec, xVec);
-        let mtx = new Matrix4().makeBasis(xVec, yVec, planeNormal.negate());
+        let zVec = vec.cross(l1Derv).normalize();
+        let l1Normal = l1.Normal;
+        if (isParallelTo(zVec, l1Normal)) zVec = l1Normal;
+
+        Orbit.ComputUpDirection(zVec, yVec, xVec);
+        let mtx = new Matrix4().makeBasis(xVec, yVec, zVec);
         let mtxInv = new Matrix4().getInverse(mtx);
         //变换
         sv.applyMatrix4(mtxInv);