Feature boundary test lxy (#128)

* Add Boundary validator

* Boundary test ui

* refect & optimize boundary validation

src/libslic3r/GCodeWriter.hpp

@@ -11,6 +11,10 @@
 
 namespace Slic3r {
 
+// Forward declarations
+class BoundaryValidator;
+class Print;
+
 class GCodeWriter {
 public:
     GCodeConfig config;
@@ -119,6 +123,12 @@ public:
     void set_is_first_layer(bool bval) { m_is_first_layer = bval; }
     GCodeFlavor get_gcode_flavor() const { return config.gcode_flavor; }
 
+    // Snapmaker: Set boundary validator for arc path validation
+    void set_boundary_validator(const BoundaryValidator* validator, Print* print_ptr = nullptr) {
+        m_boundary_validator = validator;
+        m_print_ptr = print_ptr;
+    }
+
     // Returns whether this flavor supports separate print and travel acceleration.
     static bool supports_separate_travel_acceleration(GCodeFlavor flavor);
   private:
@@ -170,6 +180,10 @@ public:
     double          m_current_speed;
     bool            m_is_first_layer = true;
 
+    // Snapmaker: Boundary validator for arc path validation
+    const BoundaryValidator* m_boundary_validator = nullptr;
+    Print* m_print_ptr = nullptr;
+
     enum class Acceleration {
         Travel,
         Print