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! libMeshb 7.79 example: transform a quadrilateral mesh into a triangular one
! using fast block transfer
program test_libmeshb_block_f90
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
use iso_fortran_env
use libmeshb7
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
implicit none
integer(int64) :: InpMsh, OutMsh, OutSol
character(80) :: InpFile
character(80) :: OutFile
character(80) :: SolFile
integer :: i
integer :: NmbVer,NmbQad,NmbTri,ver,dim,res
real(real64) , pointer :: VerTab(:,:)
integer , pointer :: VerRef( :)
integer , pointer :: QadTab(:,:),QadRef( :)
integer , pointer :: TriTab(:,:),TriRef( :)
integer(int32) :: NmbField,ho,s,d
integer(int32), pointer :: fields(:)
character(32) , pointer :: fieldsName(:)=>null()
real(real64) , pointer :: solTab(:,:)
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
print '(/"test_libmeshb_block_f90")'
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
InpFile='../sample_meshes/quad.mesh'
OutFile='./tri.meshb'
SolFile='./tri.solb'
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
! Open the quadrilateral mesh file for reading
print '(/"Input Mesh Open : ",a )',trim(InpFile)
! Open the mesh file and check the version and dimension
InpMsh=GmfOpenMeshF90(name=trim(InpFile),GmfKey=GmfRead,ver=ver,dim=dim)
print '( "Input Mesh Idx : ",i0)',InpMsh
print '( "Input Mesh ver : ",i0)',ver
print '( "Input Mesh dim : ",i0)',dim
! Allocate VerRef
NmbVer = GmfstatkwdF90(unit=InpMsh, GmfKey=GmfVertices)
print '( "Input Mesh NmbVer : ",i0)', NmbVer
allocate(VerTab(1:3,1:NmbVer))
allocate(VerRef( 1:NmbVer))
! Read the vertices using a vector of 3 consecutive doubles to store the coordinates
res=GmfGetBlockF90( &
& unit=InpMsh ,&
& GmfKey=GmfVertices ,&
& ad0=1 ,&
& ad1=NmbVer ,&
& Tab=VerTab(:,1:NmbVer) ,&
& Ref=VerRef( 1:NmbVer) )
do i=1,10
print '(3x,"ver",i6," xyz:",3(f12.5,1x)," ref: ",i0)',i,VerTab(1:3,i),VerRef(i)
enddo
! Allocate QadTab
NmbQad=GmfstatkwdF90(unit=InpMsh, GmfKey=GmfQuadrilaterals)
print '( "Input Mesh NmbQad : ",i0)', NmbQad
allocate(QadTab(1:4,1:NmbQad))
allocate(QadRef( 1:NmbQad))
! Read the quads using one single vector of 4 consecutive integers
res=GmfGetBlockF90( &
& unit=InpMsh ,&
& GmfKey=GmfQuadrilaterals,&
& ad0=1 ,&
& ad1=NmbQad ,&
& Tab=QadTab(:,1:) ,&
& Ref=QadRef( 1:) )
do i=1,10
print '(3x,"qad",i6," nd:",4(i6,1x)," ref: ",i0)',i,QadTab(1:4,i),QadRef(i)
enddo
!!> Lecture par tableau 1D sans recopie (interface à écrire en indiquand le stride)
!block
! use iso_c_binding, only: c_loc,c_f_pointer
! integer , pointer :: nodes(:)
!
! call c_f_pointer(cptr=c_loc(QadTab), fptr=nodes, shape=[4*NmbQad]) !> binding QadTab(:,:) and nodes(:)
!
! res=GmfGetElements( &
! & InpMsh ,&
! & GmfQuadrilaterals ,&
! & 1 ,&
! & NmbQad ,&
! & 0, m ,&
! & nodes( 1), nodes(4*NmbQad-3),&
! & QadRef( 1), QadRef(NmbQad) )
!end block
! Close the quadrilateral mesh
res=GmfCloseMeshF90(unit=InpMsh)
print '("Input Mesh Close : ",a)',trim(InpFile)
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
! Allocate TriTab and TriRef
NmbTri=2*NmbQad
allocate(TriTab(1:3,1:NmbTri))
allocate(TriRef( 1:NmbTri))
! Convert the quad mesh into a triangular one
do i=1,NmbTri
if(mod(i,2) .EQ. 1) then
TriTab(1,i) = QadTab(1,(i+1)/2)
TriTab(2,i) = QadTab(2,(i+1)/2)
TriTab(3,i) = QadTab(3,(i+1)/2)
TriRef( i) = QadRef( (i+1)/2)
else
TriTab(1,i) = QadTab(1,(i+1)/2)
TriTab(2,i) = QadTab(3,(i+1)/2)
TriTab(3,i) = QadTab(4,(i+1)/2)
TriRef( i) = QadRef( (i+1)/2)
endif
end do
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
! Write a triangular mesh
print '(/"Output Mesh Open : ",a )',trim(OutFile)
OutMsh=GmfOpenMeshF90(name=trim(OutFile),GmfKey=GmfWrite,ver=ver,dim=dim)
print '( "Output Mesh Idx : ",i0)',InpMsh
print '( "Output Mesh ver : ",i0)',ver
print '( "Output Mesh dim : ",i0)',dim
if(OutMsh==0) STOP ' OutMsh = 0'
! Set the number of vertices
res=GmfSetKwdF90(unit=OutMsh, GmfKey=GmfVertices, Nmb=NmbVer)
print '( "Output Mesh NmbVer : ",i0)', NmbVer
! Write them down using separate pointers for each scalar entry
res=GmfSetBlockF90( &
& unit=OutMsh ,&
& GmfKey=GmfVertices ,&
& ad0=1 ,&
& ad1=NmbVer ,&
& Tab=VerTab(:,1:NmbVer),&
& Ref=VerRef( 1:NmbVer) )
! Write the triangles using 4 independant set of arguments
! for each scalar entry: node1, node2, node3 and reference
res=GmfSetKwdF90(unit=OutMsh, GmfKey=GmfTriangles, Nmb=NmbTri)
print '( "Output Mesh NmbTri : ",i0)', NmbTri
res=GmfSetBlockF90( &
& unit=OutMsh ,&
& GmfKey=GmfTriangles ,&
& ad0=1 ,&
& ad1=NmbTri ,&
& Tab=TriTab(:,1:NmbTri),&
& Ref=TriRef( 1:NmbVer) )
!!> Ecriture par tableau 1D sans recopie (interface fortran à écrire)
!block
! use iso_c_binding, only: c_loc,c_f_pointer
! integer , pointer :: nodes(:)
!
! print '(/"binding TriTab(:,:) and nodes(:)")'
!
! call c_f_pointer(cptr=c_loc(TriTab), fptr=nodes, shape=[3*NmbTri]) !> binding TriTab(:,:) and nodes(:)
!
! print '(/"Triangle: ",i6)',1
! print '( "TriTab:",3(i6,1x) )',TriTab(1,1),TriTab(2,1),TriTab(3,1)
! print '( "nodes: ",3(i6,1x)/)',nodes(1),nodes(2),nodes(3)
! print '(/"Triangle: ",i6)',NmbTri
! print '( "TriTab:",3(i6,1x) )',TriTab(1,NmbTri),TriTab(2,NmbTri),TriTab(3,NmbTri)
! print '( "nodes: ",3(i6,1x)/)',nodes(3*NmbTri-2),nodes(3*NmbTri-1),nodes(3*NmbTri)
!
! res=GmfSetElements( &
! & InpMsh ,&
! & GmfTriangles ,&
! & 1 ,&
! & NmbTri ,&
! ! 0, m ,&
! & 0, c_null_ptr ,&
! & nodes( 1), nodes(3*NmbTri-2),&
! & TriRef( 1), TriRef(NmbTri) )
!
!end block
! Don't forget to close the file
res=GmfCloseMeshF90(unit=OutMsh)
print '("Output Mesh Close : ",a)',trim(OutFile)
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
! Create a solution file
print '(/"Output Solu Open : ",a )',trim(SolFile)
OutSol=GmfOpenMeshF90(name=trim(SolFile),GmfKey=GmfWrite,ver=ver,dim=dim)
print '( "Output Solu Idx : ",i0)',OutSol
print '( "Output Solu ver : ",i0)',ver
print '( "Output Solu dim : ",i0)',dim
if( OutSol==0 ) STOP ' OutSol = 0'
! Set the solution kinds
NmbField=3
allocate( fields (1:NmbField))
allocate( fieldsName(1:NmbField))
fields(1:NmbField) = [GmfSca,GmfVec,GmfSca]
fieldsName(1:NmbField)=['sca_1','vec_1','sca_2']
!nomDesChamps : block
! integer :: iField,nChar
! character(:), pointer :: fieldName=>null()
! res=GmfSetKwdF90(unit=OutSol, GmfKey=GmfReferenceStrings, Nmb=NmbField)
! do iField=1,NmbField
! nChar=len_trim(fieldsName(iField)) ! print '("nChar: ",i0)',nChar
! allocate(character(len=nChar+3) :: fieldName)
! write(fieldName,'(a,1x,i0,a)')trim(fieldsName(iField)),iField,C_NULL_CHAR
! print '("fieldName: ",a)',fieldName
!
! !ress=GmfSetLin(unit=OutSol, GmfKey=GmfReferenceStrings, GmfSolAtVertices, 1, fieldName)
!
! deallocate(fieldName)
! enddo
!end block nomDesChamps
allocate(solTab(1:5,NmbVer)) ! 1+ dim+ 1
print '( "Output Solu NmbVer : ",i0)',NmbVer
print '( "Output Solu nFields : ",i0)',NmbField
print '( "Output Solu fields : ", *(i0,1x))',fields(1:NmbField)
! Set the number of solutions (one per vertex)
res=GmfSetKwdF90(unit=OutSol, GmfKey=GmfSolAtVertices, Nmb=NmbVer, d=NmbField, t=fields(1:NmbField), s=0, ho=ho)
! Compute the dummy solution fields
do i=1,NmbVer
solTab( 1,i)=VerTab(1,i)
solTab(2:4,i)=[VerTab(1,i),VerTab(2,i),0d0]
solTab( 5,i)=VerTab(2,i)
enddo
res=GmfSetBlockF90( &
& unit=OutMsh ,&
& GmfKey=GmfSolAtVertices ,&
& ad0=1 ,&
& ad1=NmbVer ,&
& Tab=solTab(:,1:NmbVer) )
! Don't forget to close the file
res=GmfCloseMeshF90(unit=OutSol)
print '("Output Solu Close : ",a)',trim(SolFile)
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
!> Cleanning Memory
deallocate(VerTab,VerRef)
deallocate(QadTab,QadRef)
deallocate(TriTab,TriRef)
deallocate(solTab)
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
print '(/"Constrol"/"vizir4 -in ",a," -sol ",a,/)',trim(OutFile),trim(SolFile)
!<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
end program test_libmeshb_block_f90
|
