remove some rudundant functions

Author: dzzz2001

source/module_hamilt_lcao/module_gint/new_grid_tech/meshgrid_info.h

@@ -37,14 +37,9 @@ class MeshGridInfo
                 meshgrid_volume_ = std::abs(meshgrid_latvec0_.Det());
             };
 
-        // getter functions
-        const Vec3d &get_vec1() const { return meshgrid_vec1_; };
-        const Vec3d &get_vec2() const { return meshgrid_vec2_; };
-        const Vec3d &get_vec3() const { return meshgrid_vec3_; };
-        const Matrix3 &get_latvec0() const { return meshgrid_latvec0_; };
-        const Matrix3 &get_GT() const { return meshgrid_GT_; };
         const double get_volume() const { return meshgrid_volume_; };
         const Vec3d get_cartesian_coord(Vec3i index_3d) const { return index_3d * meshgrid_latvec0_; };
+
     private:
         // basis vectors of meshgrid
         Vec3d meshgrid_vec1_;

source/module_hamilt_lcao/module_gint/new_grid_tech/unitcell_info.cpp

@@ -22,6 +22,8 @@ UnitCellInfo::UnitCellInfo(
             unitcell_vec2_ / static_cast<double>(nby),
             unitcell_vec3_ / static_cast<double>(nbz),
             nmx/nbx, nmy/nby, nmz/nbz);
+        
+        meshgrid_info_ = biggrid_info_->get_meshgrid_info();
     }
 
 }

source/module_hamilt_lcao/module_gint/new_grid_tech/unitcell_info.h

@@ -33,7 +33,7 @@ class UnitCellInfo
         int get_nmz() const { return nmz_; };
         int get_nmxyz() const { return nmxyz_; };
         std::shared_ptr<const BigGridInfo> get_biggrid_info() const { return biggrid_info_; };
-        std::shared_ptr<const MeshGridInfo> get_meshgrid_info() const { return biggrid_info_->get_meshgrid_info(); };
+        std::shared_ptr<const MeshGridInfo> get_meshgrid_info() const { return meshgrid_info_; };
 
         //====================================================================
         // functions related to the big grid
@@ -118,7 +118,7 @@ class UnitCellInfo
         // get the cartesian coordinate of a meshgrid in the unit cell from the 3D index
         Vec3d get_meshgrid_coord(Vec3i index_3d) const
         {
-            return index_3d * biggrid_info_->get_meshgrid_info()->get_latvec0();
+            return meshgrid_info_->get_cartesian_coord(index_3d);
         };
 
         // get the cartesian coordinate of a meshgrid in the unit cell from the 1D index
@@ -152,6 +152,8 @@ class UnitCellInfo
         // basic attributes of the big grid
         std::shared_ptr<const BigGridInfo> biggrid_info_;
 
+        std::shared_ptr<const MeshGridInfo> meshgrid_info_;
+
         //====================================================================
         // member variables related to meshgrid
         //====================================================================