Reading of mesh files has been made independent from geometry and
prepared to accept different formats.
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31 changed files with 2377 additions and 2675 deletions
295
src/modules/mesh/inout/gmsh2/moduleMeshInputGmsh2.f90
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295
src/modules/mesh/inout/gmsh2/moduleMeshInputGmsh2.f90
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MODULE moduleMeshInputGmsh2
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CONTAINS
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!Inits a mesh to use Gmsh2 format
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SUBROUTINE initGmsh2(self)
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USE moduleMesh
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USE moduleMeshOutputGmsh2
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IMPLICIT NONE
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TYPE(meshParticle), INTENT(inout):: self
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self%printOutput => printOutputGmsh2
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self%printColl => printCollGmsh2
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self%printEM => printEMGmsh2
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self%readMesh => readGmsh2
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END SUBROUTINE initGmsh2
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!Reads a Gmsh 2 format
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SUBROUTINE readGmsh2(self, filename)
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USE moduleMesh3DCart
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USE moduleMesh2DCyl
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USE moduleMesh2DCart
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USE moduleMesh1DRad
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USE moduleMesh1DCart
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USE moduleBoundary
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IMPLICIT NONE
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CLASS(meshParticle), INTENT(inout):: self
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CHARACTER(:), ALLOCATABLE, INTENT(in):: filename
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REAL(8):: x1, x2, x3 !3 generic coordinates
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INTEGER, ALLOCATABLE:: p(:) !Array for nodes
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INTEGER:: e = 0, n = 0, eTemp = 0, elemType = 0, bt = 0
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INTEGER:: totalNumElem
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INTEGER:: boundaryType
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!Read mesh
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OPEN(10, FILE=TRIM(filename))
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!Skip header
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READ(10, *)
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READ(10, *)
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READ(10, *)
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READ(10, *)
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!Read number of nodes
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READ(10, *) self%numNodes
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!Allocate required matrices and vectors
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ALLOCATE(self%nodes(1:self%numNodes))
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ALLOCATE(self%K(1:self%numNodes, 1:self%numNodes))
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ALLOCATE(self%IPIV(1:self%numNodes, 1:self%numNodes))
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self%K = 0.D0
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self%IPIV = 0
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!Read the nodes information
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DO e = 1, self%numNodes
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READ(10, *) n, x1, x2, x3
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SELECT CASE(self%geometry)
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CASE("3DCart")
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ALLOCATE(meshNode3Dcart::self%nodes(n)%obj)
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CALL self%nodes(n)%obj%init(n, (/x1, x2, x3 /))
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CASE("2DCyl")
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ALLOCATE(meshNode2DCyl:: self%nodes(n)%obj)
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CALL self%nodes(n)%obj%init(n, (/x1, x2, 0.D0 /))
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CASE("2DCart")
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ALLOCATE(meshNode2DCart:: self%nodes(n)%obj)
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CALL self%nodes(n)%obj%init(n, (/x1, x2, 0.D0 /))
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CASE("1DRad")
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ALLOCATE(meshNode1DRad:: self%nodes(n)%obj)
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CALL self%nodes(n)%obj%init(n, (/x1, 0.D0, 0.D0 /))
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CASE("1DCart")
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ALLOCATE(meshNode1DCart:: self%nodes(n)%obj)
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CALL self%nodes(n)%obj%init(n, (/x1, 0.D0, 0.D0 /))
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END SELECT
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END DO
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!Skip comments
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READ(10, *)
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READ(10, *)
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!Reads total number of elements (no nodes)
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READ(10, *) totalNumElem
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!conts edges and volume elements
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self%numEdges = 0
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DO e = 1, totalNumElem
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READ(10, *) eTemp, elemType
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SELECT CASE(self%geometry)
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CASE("3DCart")
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!Element type 2 is triangle in gmsh
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IF (elemType == 2) self%numEdges = e
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CASE("2DCyl","2DCart")
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!Element type 1 is segment in Gmsh
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IF (elemType == 1) self%numEdges = e
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CASE("1DRad","1DCart")
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!Element type 15 is physical point in Gmsh
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IF (elemType == 15) self%numEdges = e
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END SELECT
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END DO
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!Substract the number of edges to the total number of elements
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!to obtain the number of volume elements
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self%numVols = TotalnumElem - self%numEdges
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!Allocates arrays
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ALLOCATE(self%edges(1:self%numEdges))
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ALLOCATE(self%vols(1:self%numVols))
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!Go back to the beggining to read elements
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DO e=1, totalNumElem
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BACKSPACE(10)
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END DO
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!Reads edges
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DO e=1, self%numEdges
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!Reads the edge according to the geometry
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SELECT CASE(self%geometry)
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CASE("3DCart")
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READ(10, *) n, elemType, eTemp, boundaryType
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BACKSPACE(10)
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!Associate boundary condition procedure.
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bt = getBoundaryID(boundaryType)
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SELECT CASE(elemType)
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CASE(2)
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!Triangular surface
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ALLOCATE(p(1:3))
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READ(10, *) n, elemType, eTemp, boundaryType, eTemp, p(1:3)
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ALLOCATE(meshEdge3DCartTria:: self%edges(e)%obj)
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CALL self%edges(e)%obj%init(n, p(1:3), bt, boundaryType)
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DEALLOCATE(p)
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END SELECT
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CASE("2DCyl")
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ALLOCATE(p(1:2))
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READ(10,*) n, elemType, eTemp, boundaryType, eTemp, p(1:2)
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!Associate boundary condition procedure.
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bt = getBoundaryId(boundaryType)
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ALLOCATE(meshEdge2DCyl:: self%edges(e)%obj)
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CALL self%edges(e)%obj%init(n, p(1:2), bt, boundaryType)
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DEALLOCATE(p)
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CASE("2DCart")
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ALLOCATE(p(1:2))
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READ(10,*) n, elemType, eTemp, boundaryType, eTemp, p(1:2)
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!Associate boundary condition procedure.
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bt = getBoundaryId(boundaryType)
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ALLOCATE(meshEdge2DCart:: self%edges(e)%obj)
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CALL self%edges(e)%obj%init(n, p(1:2), bt, boundaryType)
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DEALLOCATE(p)
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CASE("1DRad")
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ALLOCATE(p(1:1))
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READ(10, *) n, elemType, eTemp, boundaryType, eTemp, p(1)
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!Associate boundary condition
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bt = getBoundaryId(boundaryType)
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ALLOCATE(meshEdge1DRad:: self%edges(e)%obj)
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CALL self%edges(e)%obj%init(n, p(1:1), bt, boundaryType)
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DEALLOCATE(p)
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CASE("1DCart")
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ALLOCATE(p(1:1))
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READ(10, *) n, elemType, eTemp, boundaryType, eTemp, p(1)
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!Associate boundary condition
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bt = getBoundaryId(boundaryType)
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ALLOCATE(meshEdge1DCart:: self%edges(e)%obj)
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CALL self%edges(e)%obj%init(n, p(1:1), bt, boundaryType)
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DEALLOCATE(p)
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END SELECT
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END DO
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!Read and initialize volumes
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DO e = 1, self%numVols
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!Reads the volume according to the geometry
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SELECT CASE(self%geometry)
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CASE("3DCart")
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READ(10, *) n, elemType
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BACKSPACE(10)
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SELECT CASE(elemType)
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CASE(4)
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!Tetrahedron element
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ALLOCATE(p(1:4))
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READ(10, *) n, elemType, eTemp, eTemp, eTemp, p(1:4)
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ALLOCATE(meshVol3DCartTetra:: self%vols(e)%obj)
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CALL self%vols(e)%obj%init(n - self%numEdges, p(1:4))
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END SELECT
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DEALLOCATE(p)
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CASE("2DCyl")
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READ(10,*) n, elemType
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BACKSPACE(10)
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SELECT CASE(elemType)
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CASE (2)
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!Triangular element
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ALLOCATE(p(1:3))
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READ(10,*) n, elemType, eTemp, eTemp, eTemp, p(1:3)
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ALLOCATE(meshVol2DCylTria:: self%vols(e)%obj)
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CALL self%vols(e)%obj%init(n - self%numEdges, p(1:3))
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CASE (3)
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!Quadrilateral element
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ALLOCATE(p(1:4))
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READ(10,*) n, elemType, eTemp, eTemp, eTemp, p(1:4)
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ALLOCATE(meshVol2DCylQuad:: self%vols(e)%obj)
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CALL self%vols(e)%obj%init(n - self%numEdges, p(1:4))
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END SELECT
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DEALLOCATE(p)
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CASE("2DCart")
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READ(10,*) n, elemType
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BACKSPACE(10)
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SELECT CASE(elemType)
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CASE (2)
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!Triangular element
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ALLOCATE(p(1:3))
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READ(10,*) n, elemType, eTemp, eTemp, eTemp, p(1:3)
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ALLOCATE(meshVol2DCartTria:: self%vols(e)%obj)
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CALL self%vols(e)%obj%init(n - self%numEdges, p(1:3))
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CASE (3)
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!Quadrilateral element
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ALLOCATE(p(1:4))
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READ(10,*) n, elemType, eTemp, eTemp, eTemp, p(1:4)
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ALLOCATE(meshVol2DCartQuad:: self%vols(e)%obj)
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CALL self%vols(e)%obj%init(n - self%numEdges, p(1:4))
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END SELECT
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DEALLOCATE(p)
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CASE("1DRad")
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ALLOCATE(p(1:2))
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READ(10, *) n, elemType, eTemp, eTemp, eTemp, p(1:2)
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ALLOCATE(meshVol1DRadSegm:: self%vols(e)%obj)
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CALL self%vols(e)%obj%init(n - self%numEdges, p(1:2))
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DEALLOCATE(p)
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CASE("1DCart")
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ALLOCATE(p(1:2))
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READ(10, *) n, elemType, eTemp, eTemp, eTemp, p(1:2)
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ALLOCATE(meshVol1DCartSegm:: self%vols(e)%obj)
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CALL self%vols(e)%obj%init(n - self%numEdges, p(1:2))
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DEALLOCATE(p)
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END SELECT
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END DO
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END SUBROUTINE readGmsh2
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END MODULE moduleMeshInputGmsh2
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