修复:V型刀对未封闭的轮廓处理错误

src/GraphicsSystem/ToolPath/VKnifToolPath.ts

@@ -23,6 +23,8 @@ export function VKnifToolPath(polyline: Polyline, feedingDepth: number, knifAngl
 
     let ptsbul: { pt: Vec3, bul: number; }[] = [];
 
+    let isClose = polyline.IsClose;
+
     for (let i = 0; i < cus.length; i++)
     {
         let nextIndex = FixIndex(i + 1, cus.length);
@@ -46,6 +48,12 @@ export function VKnifToolPath(polyline: Polyline, feedingDepth: number, knifAngl
         //圆弧与直线相切,此时不要提刀
         if (isParallelTo(c1.GetFistDeriv(0), c2.GetFistDeriv(0))) continue;
 
+        if (!isClose && i === cus.length - 1)//最后一条
+        {
+            ptsbul.push({ pt: c1.EndPoint, bul: 0 });
+            break;
+        }
+
         //提刀
         for (let x of offsetx)
         {
@@ -66,14 +74,10 @@ export function VKnifToolPath(polyline: Polyline, feedingDepth: number, knifAngl
         }
     }
 
-    if (polyline.IsClose)
+    if (isClose)
     {
         //第一刀
         ptsbul.unshift(ptsbul[ptsbul.length - 1]);//, ptsbul[ptsbul.length - 2]
     }
-    else
-    {
-        ptsbul.pop();
-    }
     return ptsbul;
 }