GetTotalElemNum

Get the total number of elements in the mesh selection.

The GetTotalElemNum method retrieves the total number of elements in a MeshSelection object. There are four different implementations:

1. GetTotalElemNum1: Returns the total number of elements for a specific dimension when isSelectionByElemNum is true.
2. GetTotalElemNum2: Returns the total number of elements for a specific dimension using both selection by element number and selection by mesh ID.
3. GetTotalElemNum3: Returns the total number of elements across all dimensions when isSelectionByElemNum is true.
4. GetTotalElemNum4: Returns the total number of elements across all dimensions using both selection by element number and selection by mesh ID.

Dimension Mapping

• dim = 0: Size of pointElemNum or elements in pointMeshID
• dim = 1: Size of curveElemNum or elements in curveMeshID
• dim = 2: Size of surfaceElemNum or elements in surfaceMeshID
• dim = 3: Size of volumeElemNum or elements in volumeMeshID

Selection Methods Used

• ✅ isSelectionByMeshID (GetTotalElemNum2, GetTotalElemNum4)
• ✅ isSelectionByElemNum (all variants)
• ❌ isSelectionByNodeNum (not implemented)
• ❌ isSelectionByBox (not implemented)

Interface Descriptions

GetTotalElemNum1

MODULE FUNCTION GetTotalElemNum1(obj, dim) RESULT(ans)
  CLASS(MeshSelection_), INTENT(IN) :: obj
  INTEGER(I4B), INTENT(IN) :: dim
  INTEGER(I4B) :: ans
END FUNCTION GetTotalElemNum1

Returns the total number of elements for a specific dimension when isSelectionByElemNum is true.

• dim: Dimension to retrieve element count from (0=point, 1=curve, 2=surface, 3=volume)
• ans: Total number of elements in the specified dimension

Note: This method only works when isSelectionByElemNum is true.

GetTotalElemNum2

MODULE FUNCTION GetTotalElemNum2(obj, dim, dom) RESULT(ans)
  CLASS(MeshSelection_), INTENT(IN) :: obj
  INTEGER(I4B), INTENT(IN) :: dim
  CLASS(AbstractDomain_), INTENT(IN) :: dom
  INTEGER(I4B) :: ans
END FUNCTION GetTotalElemNum2

Returns the total number of elements for a specific dimension using both selection by element number and selection by mesh ID.

• dim: Dimension to retrieve element count from (0=point, 1=curve, 2=surface, 3=volume)
• dom: Abstract domain containing the meshes
• ans: Total number of elements in the specified dimension

GetTotalElemNum3

MODULE FUNCTION GetTotalElemNum3(obj) RESULT(ans)
  CLASS(MeshSelection_), INTENT(IN) :: obj
  INTEGER(I4B) :: ans
END FUNCTION GetTotalElemNum3

Returns the total number of elements across all dimensions when isSelectionByElemNum is true. It sums the sizes of pointElemNum, curveElemNum, surfaceElemNum, and volumeElemNum.

• ans: Total number of elements across all dimensions

Note: This method only works when isSelectionByElemNum is true.

GetTotalElemNum4

MODULE FUNCTION GetTotalElemNum4(obj, dom) RESULT(ans)
  CLASS(MeshSelection_), INTENT(IN) :: obj
  CLASS(AbstractDomain_), INTENT(IN) :: dom
  INTEGER(I4B) :: ans
END FUNCTION GetTotalElemNum4

Returns the total number of elements across all dimensions using both selection by element number and selection by mesh ID.

• dom: Abstract domain containing the meshes
• ans: Total number of elements across all dimensions

Note: This function calls GetTotalElemNum2 for each dimension (0-3) and sums the results.