mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-09-19 17:58:53 +00:00
Jukka Aho
127 lines
4.5 KiB
Julia
127 lines
4.5 KiB
Julia
# This file is a part of JuliaFEM.
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# License is MIT: see https://github.com/JuliaFEM/JuliaFEM.jl/blob/master/LICENSE.md
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using LightXML
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# element codes: http://www.paraview.org/pipermail/paraview/2013-July/028859.html
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# > from ./VTK/ThirdParty/xdmf2/vtkxdmf2/libsrc/XdmfTopology.h
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# >
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# > // Topologies
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# > #define XDMF_NOTOPOLOGY 0x0
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# > #define XDMF_POLYVERTEX 0x1
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# > #define XDMF_POLYLINE 0x2
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# > #define XDMF_POLYGON 0x3
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# > #define XDMF_TRI 0x4
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# > #define XDMF_QUAD 0x5
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# > #define XDMF_TET 0x6
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# > #define XDMF_PYRAMID 0x7
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# > #define XDMF_WEDGE 0x8
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# > #define XDMF_HEX 0x9
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# > #define XDMF_EDGE_3 0x0022
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# > #define XDMF_TRI_6 0x0024
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# > #define XDMF_QUAD_8 0x0025
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# > #define XDMF_QUAD_9 0x0023
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# > #define XDMF_TET_10 0x0026
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# > #define XDMF_PYRAMID_13 0x0027
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# > #define XDMF_WEDGE_15 0x0028
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# > #define XDMF_WEDGE_18 0x0029
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# > #define XDMF_HEX_20 0x0030
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# > #define XDMF_HEX_24 0x0031
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# > #define XDMF_HEX_27 0x0032
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# > #define XDMF_MIXED 0x0070
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# > #define XDMF_2DSMESH 0x0100
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# > #define XDMF_2DRECTMESH 0x0101
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# > #define XDMF_2DCORECTMESH 0x0102
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# > #define XDMF_3DSMESH 0x1100
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# > #define XDMF_3DRECTMESH 0x1101
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# > #define XDMF_3DCORECTMESH 0x1102
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global eltypes = Dict{Symbol, Int}(
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:Tri3 => 0x4,
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:Quad4 => 0x5,
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:Tet4 => 0x6,
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:Hex8 => 0x9,
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:Tet10 => 0x0026)
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function xdmf_new_model(xdmf_version="2.1")
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xdoc = XMLDocument()
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xroot = create_root(xdoc, "Xdmf")
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set_attribute(xroot, "xmlns:xi", "http://www.w3.org/2001/XInclude")
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set_attribute(xroot, "Version", xdmf_version)
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domain = new_child(xroot, "Domain")
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return xdoc, domain
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end
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function xdmf_new_temporal_collection(model)
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temporal_collection = new_child(model, "Grid")
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set_attribute(temporal_collection, "CollectionType", "Temporal")
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set_attribute(temporal_collection, "GridType", "Collection")
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set_attribute(temporal_collection, "Name", "Collection")
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# geometry = new_child(temporal_collection, "Geometry")
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# set_attribute(geometry, "Type", "None")
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# topology = new_child(temporal_collection, "Topology")
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# set_attribute(topology, "Dimensions", "0")
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# set_attribute(topology, "Type", "NoTopology")
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return temporal_collection
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end
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function xdmf_new_grid(temporal_collection; time=0)
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grid = new_child(temporal_collection, "Grid")
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set_attribute(grid, "Name", "Grid")
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time_ = new_child(grid, "Time")
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set_attribute(time_, "Value", time)
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return grid
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end
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function xdmf_new_mesh!(grid, nodes, elements)
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# 1. write nodes
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geometry = new_child(grid, "Geometry")
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set_attribute(geometry, "Type", "XYZ")
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dataitem = new_child(geometry, "DataItem")
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set_attribute(dataitem, "DataType", "Float")
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ndim = sum([length(node) for node in nodes])
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info("XDFM: ndim = $ndim")
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set_attribute(dataitem, "Dimensions", "$ndim")
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set_attribute(dataitem, "Format", "XML")
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set_attribute(dataitem, "Precision", 8)
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s = join([join(node, " ") for node in round(nodes, 5)], "\n")
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add_text(dataitem, "\n"*s*"\n")
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# 2. write elements
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topology = new_child(grid, "Topology")
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eldim = sum([length(element[2]) for element in elements]) + length(elements)
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set_attribute(topology, "TopologyType", "Mixed")
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set_attribute(topology, "NumberOfElements", length(elements))
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dataitem = new_child(topology, "DataItem")
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set_attribute(dataitem, "Format", "XML")
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set_attribute(dataitem, "DataType", "Int")
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set_attribute(dataitem, "Dimensions", "$eldim")
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# set_attribute(dataitem, "Precision", 8)
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# note: id numbers start from 0 in Xdmf
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s = join([join([eltypes[eltype]; connectivity-1], " ") for (eltype, connectivity) in elements], "\n")
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add_text(dataitem, "\n"*s*"\n")
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end
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""" Write Vector field to nodes. """
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function xdmf_new_nodal_field!(grid, name, data)
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attribute = new_child(grid, "Attribute")
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set_attribute(attribute, "Center", "Node")
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set_attribute(attribute, "Name", name)
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set_attribute(attribute, "Type", "Vector")
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dataitem = new_child(attribute, "DataItem")
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set_attribute(dataitem, "DataType", "Float")
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ndim = sum([length(d) for d in data])
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set_attribute(dataitem, "Dimensions", "$ndim")
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set_attribute(dataitem, "Format", "XML")
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set_attribute(dataitem, "Precision", 8)
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s = join([join(d, " ") for d in round(data, 5)], "\n")
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add_text(dataitem, "\n"*s*"\n")
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end
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function xdmf_save_model(xdoc, filename)
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save_file(xdoc, filename)
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end
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