!1162 修复:拆单轮廓问题

src/GraphicsSystem/CalcEdgeSealing.ts

@@ -127,7 +127,8 @@ export function CalcEdgeSealing(cus: Curve[])
     for (let i = 0; i < cus.length; i++)
     {
         let frontLine = cus[i];
-        let laterLine = cus[FixIndex(i + 1, cus)];
+        let laterIndex = FixIndex(i + 1, cus);
+        let laterLine = cus[laterIndex];
         if (equalv3(frontLine.EndPoint, laterLine.StartPoint))
             continue;
         let refLine = oldLine ?? frontLine;
@@ -145,8 +146,23 @@ export function CalcEdgeSealing(cus: Curve[])
             alert("获取封边错误,请提供图纸给相关人员");
             return;
         }
+        let par = frontLine.GetParamAtPoint(iPt);
+        if (par < 0)
+        {
+            cus.splice(i, 1);
+            i -= 2;
+        }
+        else
             frontLine.EndPoint = iPt;
         oldLine = equalv3(iPt, laterLine.EndPoint) ? laterLine.Clone() : null;
+
+        par = laterLine.GetParamAtPoint(iPt);
+        if (par > 1)
+        {
+            cus.splice(laterIndex, 1);
+            i -= 2;
+        }
+        else
             laterLine.StartPoint = iPt;
     }
 }