Shared data for SLA gizmos have been removed from GLGizmoBase

This commit introduces no functional changes, only code-shuffling

src/slic3r/GUI/Gizmos/GLGizmosManager.hpp

@@ -227,6 +227,65 @@ private:
     bool grabber_contains_mouse() const;
 };
 
+
+
+class MeshRaycaster;
+class MeshClipper;
+
+// This class is only for sharing SLA related data between SLA gizmos
+// and its synchronization with backend data. It should not be misused
+// for anything else.
+class CommonGizmosData {
+public:
+    CommonGizmosData();
+    const TriangleMesh* mesh() const {
+        return (! m_mesh ? nullptr : m_mesh); //(m_cavity_mesh ? m_cavity_mesh.get() : m_mesh));
+    }
+
+    bool update_from_backend(GLCanvas3D& canvas, ModelObject* model_object);
+    bool recent_update = false;
+    static constexpr float HoleStickOutLength = 1.f;
+
+    ModelObject* m_model_object = nullptr;
+    const TriangleMesh* m_mesh;
+    std::unique_ptr<MeshRaycaster> m_mesh_raycaster;
+    std::unique_ptr<MeshClipper> m_object_clipper;
+    std::unique_ptr<MeshClipper> m_supports_clipper;
+
+    //std::unique_ptr<TriangleMesh> m_cavity_mesh;
+    //std::unique_ptr<GLVolume> m_volume_with_cavity;
+
+    int m_active_instance = -1;
+    float m_active_instance_bb_radius = 0;
+    ObjectID m_model_object_id = 0;
+    int m_print_object_idx = -1;
+    int m_print_objects_count = -1;
+    int m_old_timestamp = -1;
+
+    float m_clipping_plane_distance = 0.f;
+    std::unique_ptr<ClippingPlane> m_clipping_plane;
+    bool m_clipping_plane_was_moved = false;
+
+    void stash_clipping_plane() {
+        m_clipping_plane_distance_stash = m_clipping_plane_distance;
+    }
+
+    void unstash_clipping_plane() {
+        m_clipping_plane_distance = m_clipping_plane_distance_stash;
+    }
+
+    bool has_drilled_mesh() const { return m_has_drilled_mesh; }
+
+    void build_AABB_if_needed();
+
+private:
+    const TriangleMesh* m_old_mesh;
+    TriangleMesh m_backend_mesh_transformed;
+    float m_clipping_plane_distance_stash = 0.f;
+    bool m_has_drilled_mesh = false;
+    bool m_schedule_aabb_calculation = false;
+};
+
 } // namespace GUI
 } // namespace Slic3r