tri_mesh.f90

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module tri_mesh
  use tri, only : tri_t, neko_tri_npts
  use point, only : point_t
  implicit none
  private
 
  type, public :: tri_mesh_t
     type(tri_t), allocatable :: el(:)
     type(point_t), allocatable :: points(:)
     integer :: nelv
     integer :: mpts
   contains
     procedure, pass(this) :: init => tri_mesh_init
     procedure, pass(this) :: free => tri_mesh_free
     procedure, pass(this) :: add_element => tri_mesh_add_element
  end type tri_mesh_t
 
contains
 
  subroutine tri_mesh_init(this, nelv)
    class(tri_mesh_t), intent(inout) :: this
    integer, intent(in) :: nelv
 
    call this%free()
 
    this%nelv = nelv
    allocate(this%el(this%nelv))
    allocate(this%points(nelv * neko_tri_npts))
 
    this%mpts = 0
    this%nelv = 0
 
  end subroutine tri_mesh_init
 
  subroutine tri_mesh_free(this)
    class(tri_mesh_t), intent(inout) :: this
 
    if (allocated(this%el)) then
       deallocate(this%el)
    end if
 
    if (allocated(this%points)) then
       deallocate(this%points)
    end if
 
  end subroutine tri_mesh_free
 
  subroutine tri_mesh_add_element(this, p1, p2, p3)
    class(tri_mesh_t), intent(inout) :: this
    type(point_t), target, intent(inout) :: p1, p2, p3
 
    this%points(this%mpts + 1) = p1
    this%points(this%mpts + 2) = p2
    this%points(this%mpts + 3) = p3
 
    this%nelv = this%nelv + 1
    call this%el(this%nelv)%init(this%nelv, &
         this%points(this%mpts + 1), &
         this%points(this%mpts + 2), &
         this%points(this%mpts + 3))
    this%mpts = this%mpts + 3
 
  end subroutine tri_mesh_add_element
 
end module tri_mesh