[MeL] Extract common HexRule subclass

MeshLib/Elements/HexRule.cpp

+/**
+ * \file
+ * \copyright
+ * Copyright (c) 2012-2023, OpenGeoSys Community (http://www.opengeosys.org)
+ *            Distributed under a Modified BSD License.
+ *              See accompanying file LICENSE.txt or
+ *              http://www.opengeosys.org/project/license
+ */
+
+#include "HexRule.h"
+
+#include "MathLib/GeometricBasics.h"
+#include "MeshLib/Node.h"
+#include "Quad.h"
+
+namespace MeshLib
+{
+double HexRule::computeVolume(Node const* const* _nodes)
+{
+    return MathLib::calcTetrahedronVolume(
+               *_nodes[4], *_nodes[7], *_nodes[5], *_nodes[0]) +
+           MathLib::calcTetrahedronVolume(
+               *_nodes[5], *_nodes[3], *_nodes[1], *_nodes[0]) +
+           MathLib::calcTetrahedronVolume(
+               *_nodes[5], *_nodes[7], *_nodes[3], *_nodes[0]) +
+           MathLib::calcTetrahedronVolume(
+               *_nodes[5], *_nodes[7], *_nodes[6], *_nodes[2]) +
+           MathLib::calcTetrahedronVolume(
+               *_nodes[1], *_nodes[3], *_nodes[5], *_nodes[2]) +
+           MathLib::calcTetrahedronVolume(
+               *_nodes[3], *_nodes[7], *_nodes[5], *_nodes[2]);
+}
+
+bool HexRule::isPntInElement(Node const* const* nodes,
+                             MathLib::Point3d const& pnt,
+                             double eps)
+{
+    return (MathLib::isPointInTetrahedron(
+                pnt, *nodes[4], *nodes[7], *nodes[5], *nodes[0], eps) ||
+            MathLib::isPointInTetrahedron(
+                pnt, *nodes[5], *nodes[3], *nodes[1], *nodes[0], eps) ||
+            MathLib::isPointInTetrahedron(
+                pnt, *nodes[5], *nodes[7], *nodes[3], *nodes[0], eps) ||
+            MathLib::isPointInTetrahedron(
+                pnt, *nodes[5], *nodes[7], *nodes[6], *nodes[2], eps) ||
+            MathLib::isPointInTetrahedron(
+                pnt, *nodes[1], *nodes[3], *nodes[5], *nodes[2], eps) ||
+            MathLib::isPointInTetrahedron(
+                pnt, *nodes[3], *nodes[7], *nodes[5], *nodes[2], eps));
+}
+
+ElementErrorCode HexRule::validate(const Element* e)
+{
+    ElementErrorCode error_code;
+    error_code[ElementErrorFlag::ZeroVolume] = hasZeroVolume(*e);
+
+    for (unsigned i = 0; i < 6; ++i)
+    {
+        if (error_code.all())
+        {
+            break;
+        }
+
+        const MeshLib::Element* quad(e->getFace(i));
+        error_code |= quad->validate();
+        delete quad;
+    }
+    error_code[ElementErrorFlag::NodeOrder] = !e->testElementNodeOrder();
+    return error_code;
+}
+
+}  // end namespace MeshLib

MeshLib/Elements/HexRule.h

+/**
+ * \file
+ * \copyright
+ * Copyright (c) 2012-2023, OpenGeoSys Community (http://www.opengeosys.org)
+ *            Distributed under a Modified BSD License.
+ *              See accompanying file LICENSE.txt or
+ *              http://www.opengeosys.org/project/license
+ *
+ */
+
+#pragma once
+
+#include "CellRule.h"
+#include "Element.h"
+#include "MeshLib/MeshEnums.h"
+
+namespace MeshLib
+{
+class HexRule : public CellRule
+{
+public:
+    /// Constant: The number of base nodes for this element
+    static const unsigned n_base_nodes = 8u;
+
+    /// Constant: The geometric type of the element
+    static const MeshElemType mesh_elem_type = MeshElemType::HEXAHEDRON;
+
+    /// Constant: The number of faces
+    static const unsigned n_faces = 6;
+
+    /// Constant: The number of edges
+    static const unsigned n_edges = 12;
+
+    /// Constant: The number of neighbors
+    static const unsigned n_neighbors = 6;
+
+    /**
+     * \copydoc MeshLib::Element::isPntInElement()
+     * \param nodes the nodes of the element.
+     */
+    static bool isPntInElement(Node const* const* nodes,
+                               MathLib::Point3d const& pnt, double eps);
+
+    /**
+     * Tests if the element is geometrically valid.
+     */
+    static ElementErrorCode validate(const Element* e);
+
+    /// Calculates the volume of a convex hexahedron by partitioning it into six
+    /// tetrahedra.
+    static double computeVolume(Node const* const* _nodes);
+
+protected:
+    template <std::size_t N>
+    static unsigned identifyFace(Node const* const* _nodes,
+                                 Node const* nodes[3],
+                                 unsigned const face_nodes[6][N])
+    {
+        for (unsigned i = 0; i < 6; i++)
+        {
+            unsigned flag(0);
+            for (unsigned j = 0; j < 4; j++)
+            {
+                for (unsigned k = 0; k < 3; k++)
+                {
+                    if (_nodes[face_nodes[i][j]] == nodes[k])
+                    {
+                        flag++;
+                    }
+                }
+            }
+            if (flag == 3)
+            {
+                return i;
+            }
+        }
+        return std::numeric_limits<unsigned>::max();
+    }
+};
+}  // namespace MeshLib

MeshLib/Elements/HexRule20.h

@@ -10,10 +10,8 @@
 
 #pragma once
 
-#include "MeshLib/MeshEnums.h"
-#include "Element.h"
 #include "EdgeReturn.h"
-#include "HexRule8.h"
+#include "HexRule.h"
 
 namespace MeshLib
 {
@@ -43,7 +41,7 @@ namespace MeshLib
  *
  * \endcode
  */
-class HexRule20 : public HexRule8
+class HexRule20 : public HexRule
 {
 public:
     /// Constant: The number of all nodes for this element
@@ -64,6 +62,12 @@ public:
     /// Returns the i-th face of the element.
     static const Element* getFace(const Element* e, unsigned i);
 
+    /// Returns the ID of a face given an array of nodes.
+    static unsigned identifyFace(Node const* const* _nodes,
+                                 Node const* nodes[3])
+    {
+        return HexRule::identifyFace(_nodes, nodes, face_nodes);
+    }
 }; /* class */
 
 }  // namespace MeshLib

MeshLib/Elements/HexRule8.cpp

@@ -58,82 +58,4 @@ const Element* HexRule8::getFace(const Element* e, unsigned i)
     ERR("Error in MeshLib::Element::getFace() - Index {:d} does not exist.", i);
     return nullptr;
 }
-
-double HexRule8::computeVolume(Node const* const* _nodes)
-{
-    return MathLib::calcTetrahedronVolume(
-               *_nodes[4], *_nodes[7], *_nodes[5], *_nodes[0]) +
-           MathLib::calcTetrahedronVolume(
-               *_nodes[5], *_nodes[3], *_nodes[1], *_nodes[0]) +
-           MathLib::calcTetrahedronVolume(
-               *_nodes[5], *_nodes[7], *_nodes[3], *_nodes[0]) +
-           MathLib::calcTetrahedronVolume(
-               *_nodes[5], *_nodes[7], *_nodes[6], *_nodes[2]) +
-           MathLib::calcTetrahedronVolume(
-               *_nodes[1], *_nodes[3], *_nodes[5], *_nodes[2]) +
-           MathLib::calcTetrahedronVolume(
-               *_nodes[3], *_nodes[7], *_nodes[5], *_nodes[2]);
-}
-
-bool HexRule8::isPntInElement(Node const* const* nodes,
-                              MathLib::Point3d const& pnt,
-                              double eps)
-{
-    return (MathLib::isPointInTetrahedron(
-                pnt, *nodes[4], *nodes[7], *nodes[5], *nodes[0], eps) ||
-            MathLib::isPointInTetrahedron(
-                pnt, *nodes[5], *nodes[3], *nodes[1], *nodes[0], eps) ||
-            MathLib::isPointInTetrahedron(
-                pnt, *nodes[5], *nodes[7], *nodes[3], *nodes[0], eps) ||
-            MathLib::isPointInTetrahedron(
-                pnt, *nodes[5], *nodes[7], *nodes[6], *nodes[2], eps) ||
-            MathLib::isPointInTetrahedron(
-                pnt, *nodes[1], *nodes[3], *nodes[5], *nodes[2], eps) ||
-            MathLib::isPointInTetrahedron(
-                pnt, *nodes[3], *nodes[7], *nodes[5], *nodes[2], eps));
-}
-
-unsigned HexRule8::identifyFace(Node const* const* _nodes, Node const* nodes[3])
-{
-    for (unsigned i = 0; i < 6; i++)
-    {
-        unsigned flag(0);
-        for (unsigned j = 0; j < 4; j++)
-        {
-            for (unsigned k = 0; k < 3; k++)
-            {
-                if (_nodes[face_nodes[i][j]] == nodes[k])
-                {
-                    flag++;
-                }
-            }
-        }
-        if (flag == 3)
-        {
-            return i;
-        }
-    }
-    return std::numeric_limits<unsigned>::max();
-}
-
-ElementErrorCode HexRule8::validate(const Element* e)
-{
-    ElementErrorCode error_code;
-    error_code[ElementErrorFlag::ZeroVolume] = hasZeroVolume(*e);
-
-    for (unsigned i = 0; i < 6; ++i)
-    {
-        if (error_code.all())
-        {
-            break;
-        }
-
-        const MeshLib::Element* quad(e->getFace(i));
-        error_code |= quad->validate();
-        delete quad;
-    }
-    error_code[ElementErrorFlag::NodeOrder] = !e->testElementNodeOrder();
-    return error_code;
-}
-
 }  // end namespace MeshLib

MeshLib/Elements/HexRule8.h

@@ -10,14 +10,11 @@
 
 #pragma once
 
-#include "MeshLib/MeshEnums.h"
-#include "Element.h"
 #include "EdgeReturn.h"
-#include "CellRule.h"
+#include "HexRule.h"
 
 namespace MeshLib
 {
-
 /**
  * A 8-nodes Hexahedron Element.
  * \code
@@ -43,30 +40,15 @@ namespace MeshLib
  *
  * \endcode
  */
-class HexRule8 : public CellRule
+class HexRule8 : public HexRule
 {
 public:
-    /// Constant: The number of base nodes for this element
-    static const unsigned n_base_nodes = 8u;
-
     /// Constant: The number of all nodes for this element
     static const unsigned n_all_nodes = 8u;
 
-    /// Constant: The geometric type of the element
-    static const MeshElemType mesh_elem_type = MeshElemType::HEXAHEDRON;
-
     /// Constant: The FEM type of the element
     static const CellType cell_type = CellType::HEX8;
 
-    /// Constant: The number of faces
-    static const unsigned n_faces = 6;
-
-    /// Constant: The number of edges
-    static const unsigned n_edges = 12;
-
-    /// Constant: The number of neighbors
-    static const unsigned n_neighbors = 6;
-
     /// Constant: Local node index table for faces
     static const unsigned face_nodes[6][4];
 
@@ -79,25 +61,12 @@ public:
     /// Returns the i-th face of the element.
     static const Element* getFace(const Element* e, unsigned i);
 
-    /**
-     * \copydoc MeshLib::Element::isPntInElement()
-     * \param nodes the nodes of the element.
-     */
-    static bool isPntInElement(Node const* const* nodes,
-                               MathLib::Point3d const& pnt, double eps);
-
-    /**
-     * Tests if the element is geometrically valid.
-     */
-    static ElementErrorCode validate(const Element* e);
-
     /// Returns the ID of a face given an array of nodes.
-    static unsigned identifyFace(Node const* const* /*_nodes*/,
-                                 Node const* nodes[3]);
-
-    /// Calculates the volume of a convex hexahedron by partitioning it into six tetrahedra.
-    static double computeVolume(Node const* const* _nodes);
-
+    static unsigned identifyFace(Node const* const* _nodes,
+                                 Node const* nodes[3])
+    {
+        return HexRule::identifyFace(_nodes, nodes, face_nodes);
+    }
 }; /* class */
 
 }  // namespace MeshLib