add .inp (gmsh/CalculiX/Abaqus) support

src/MeshIO.jl

@@ -17,6 +17,7 @@ include("io/2dm.jl")
 include("io/msh.jl")
 include("io/gts.jl")
 include("io/ifs.jl")
+include("io/inp.jl")
 
 """
     load(fn::File{MeshFormat}; pointtype=Point3f, uvtype=Vec2f,

src/io/inp.jl

@@ -0,0 +1,36 @@
+# read .inp files
+function load(fs::Stream{format"INP"}; facetype=GLTriangleFace, pointtype=Point3f)
+    #INP file format
+    io = stream(fs)
+
+    points = pointtype[]
+    faces = facetype[]
+    node_idx = Int[]
+
+    # read the first 3 lines if there is the "*heading" keyword
+    line = readline(io)
+    contains(line,"*heading") && (line = readline(io))
+    BlockType = contains(line,"*NODE") ? Val{:NodeBlock}() : Val{:DataBlock}()
+
+    # read the file
+    while !eof(io)
+        line = readline(io)
+        BlockType, line = parse_blocktype!(BlockType, io, line)
+        if BlockType == Val{:NodeBlock}()
+            push!(node_idx, parse(Int,split(line,",")[1])) # keep track of the node index of the inp file
+            push!(points, pointtype(parse.(eltype(pointtype),split(line,",")[2:4])))
+        elseif BlockType == Val{:ElementBlock}()
+            nodes = parse.(Int,split(line,",")[2:end])
+            push!(faces, TriangleFace{Int}(facetype([findfirst(==(node),node_idx) for node in nodes])...)) # parse the face
+        else
+            continue
+        end
+    end
+
+    return Mesh(points, faces)
+end
+function parse_blocktype!(block, io, line)
+    contains(line,"*NODE") && return block=Val{:NodeBlock}(),readline(io)
+    contains(line,"*ELEMENT") && return block=Val{:ElementBlock}(),readline(io)
+    return block, line
+end

src/precompile.jl

@@ -21,6 +21,7 @@ function _precompile_()
         @warnpcfail precompile(load, (File{format"PLY_BINARY",IOStream},))
         @warnpcfail precompile(load, (File{format"STL_ASCII",IOStream},))
         @warnpcfail precompile(load, (File{format"STL_BINARY",IOStream},))
+        @warnpcfail precompile(load, (File{format"INP",IOStream},))
     else
         @warnpcfail precompile(load, (File{format"2DM"},))
         @warnpcfail precompile(load, (File{format"MSH"},))
@@ -30,6 +31,7 @@ function _precompile_()
         @warnpcfail precompile(load, (File{format"PLY_BINARY"},))
         @warnpcfail precompile(load, (File{format"STL_ASCII"},))
         @warnpcfail precompile(load, (File{format"STL_BINARY"},))
+        @warnpcfail precompile(load, (File{format"INP"},))
     end
 
 end

test/runtests.jl

@@ -190,9 +190,8 @@ end
             msh2 = expand_faceviews(Mesh(msh))
             @test !(normals(msh2) isa FaceView)
             @test length(faces(msh2)) == 1
-            @test coordinates(coordinates(msh2)[faces(msh2)[1]]) == (Vec3f(0), Vec3f(0.062805, 0.591207, 0.902102), Vec3f(0.058382, 0.577691, 0.904429))
-            @test normals(msh2)[faces(msh2)[1]] == (Vec3f(0.9134, 0.104, 0.3934), Vec3f(0.8079, 0.4428, 0.3887), Vec3f(0.8943, 0.4474, 0.0))
-
+            @test all(coordinates(coordinates(msh2)[faces(msh2)[1]]) .==[Point3f(0), Point3f(0.062805, 0.591207, 0.902102), Point3f(0.058382, 0.577691, 0.904429)])
+            @test all(normals(msh2)[faces(msh2)[1]] .== [Vec3f(0.9134, 0.104, 0.3934), Vec3f(0.8079, 0.4428, 0.3887), Vec3f(0.8943, 0.4474, 0.0)])
             # test that save works with FaceViews
             mktempdir() do tmpdir
                 save(joinpath(tmpdir, "test.obj"), msh)
@@ -264,5 +263,14 @@ end
             @test material["diffuse map"] isa Dict{String, Any}
             @test material["diffuse map"]["filename"] == replace(joinpath(tf, "mini sponza/SP_LUK.JPG"), '\\' => '/')
         end
+
+        @testset "INP" begin
+            msh = load(joinpath(tf, "cube.inp"))
+
+            @test length(faces(msh)) == 24
+            @test length(coordinates(msh)) == 14
+            @test msh.views == []
+            @test test_face_indices(msh)
+        end
     end
 end

test/testfiles/cube.inp

@@ -0,0 +1,40 @@
+*NODE
+1, -0.5, -0.5, 0.5
+2, -0.5, -0.5, -0.5
+3, -0.5, 0.5, 0.5
+4, -0.5, 0.5, -0.5
+5, 0.5, -0.5, 0.5
+6, 0.5, -0.5, -0.5
+7, 0.5, 0.5, 0.5
+8, 0.5, 0.5, -0.5
+9, -0.5, 0.0, 0.0
+10, 0.5, 0.0, 0.0
+11, 0.0, -0.5, 0.0
+12, 0.0, 0.5, 0.0
+13, 0.0, 0.0, -0.5
+14, 0.0, 0.0, 0.5
+*ELEMENT, type=CPS3, ELSET=Surface1
+21, 2, 1, 9
+22, 1, 3, 9
+23, 4, 2, 9
+24, 3, 4, 9
+25, 6, 10, 5
+26, 5, 10, 7
+27, 8, 10, 6
+28, 7, 10, 8
+29, 1, 2, 11
+30, 5, 1, 11
+31, 2, 6, 11
+32, 6, 5, 11
+33, 3, 12, 4
+34, 7, 12, 3
+35, 4, 12, 8
+36, 8, 12, 7
+37, 2, 4, 13
+38, 6, 2, 13
+39, 4, 8, 13
+40, 8, 6, 13
+41, 1, 14, 3
+42, 5, 14, 1
+43, 3, 14, 7
+44, 7, 14, 5