Fix non bambu wipe tower issues (skirt overlapping with tower, extreme travel moves outside plate boundary) (#11748)

* Fix prime/purge tower extreme travel for non BBL printers
* Fix wipe tower skirt not generating correctly for non bambu printers

src/libslic3r/GCode/WipeTower2.cpp

@@ -1215,6 +1215,10 @@ WipeTower::ToolChangeResult WipeTower2::construct_tcr(WipeTowerWriter2& writer,
     result.extrusions   = std::move(writer.extrusions());
     result.wipe_path    = std::move(writer.wipe_path());
     result.is_finish_first = is_finish;
+    // ORCA: Always initialize the tool_change_start_pos with a valid position
+    // to avoid undefined variable travel on X in Gcode.cpp function std::string WipeTowerIntegration::post_process_wipe_tower_moves
+    result.tool_change_start_pos = result.start_pos;  // always valid fallback
+
     return result;
 }
 

src/libslic3r/GCode/WipeTower2.hpp

@@ -58,10 +58,18 @@ public:
 	std::vector<std::pair<float, float>> get_z_and_depth_pairs() const;
     float get_brim_width() const { return m_wipe_tower_brim_width_real; }
 	float get_wipe_tower_height() const { return m_wipe_tower_height; }
-
-
-
-
+    // ORCA: Match WipeTower API used by Print skirt/brim planning.
+    // Returned bounding box is in WIPE-TOWER-LOCAL coordinates (before placement on the bed).
+    // Include brim and y-shift to match what WT gcode actually prints.
+    BoundingBoxf get_bbx() const{
+        const float brim = m_wipe_tower_brim_width_real;
+        const Vec2d min(-brim, -brim + double(m_y_shift));
+        const Vec2d max(double(m_wipe_tower_width) + brim, double(m_wipe_tower_depth) + brim + double(m_y_shift));
+        return BoundingBoxf(min, max);
+    }
+    // WT2 doesn't currently compute a rib-origin compensation like WipeTower (m_rib_offset),
+    // so expose a zero offset for consistency purposes (to maintain API parity).
+    Vec2f get_rib_offset() const { return Vec2f::Zero(); }
 
 	// Switch to a next layer.
 	void set_layer(

src/libslic3r/Print.cpp

@@ -3333,6 +3333,8 @@ void Print::_make_wipe_tower()
         m_wipe_tower_data.z_and_depth_pairs = wipe_tower.get_z_and_depth_pairs();
         m_wipe_tower_data.brim_width        = wipe_tower.get_brim_width();
         m_wipe_tower_data.height            = wipe_tower.get_wipe_tower_height();
+        m_wipe_tower_data.bbx               = wipe_tower.get_bbx();
+        m_wipe_tower_data.rib_offset        = wipe_tower.get_rib_offset();
 
         // Unload the current filament over the purge tower.
         coordf_t layer_height = m_objects.front()->config().layer_height.value;