Feature: Read geometry information from t8code

Project.toml

@@ -92,7 +92,7 @@ StaticArrays = "1.5"
 StrideArrays = "0.1.26"
 StructArrays = "0.6.11"
 SummationByPartsOperators = "0.5.41"
-T8code = "0.4.3, 0.5"
+T8code = "0.5"
 TimerOutputs = "0.5.7"
 Triangulate = "2.2"
 TriplotBase = "0.1"

examples/t8code_2d_dgsem/elixir_advection_amr_unstructured_flag.jl

@@ -33,13 +33,8 @@ mapping_flag = Trixi.transfinite_mapping(faces)
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/63ff2ea224409e55ee8423b3a33e316a/raw/7db58af7446d1479753ae718930741c47a3b79b7/square_unstructured_2.inp",
                            joinpath(@__DIR__, "square_unstructured_2.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connecvity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(2))
-
-mesh = T8codeMesh(conn, polydeg = 3,
-                  mapping = mapping_flag,
+mesh = T8codeMesh(mesh_file, 2;
+                  mapping = mapping_flag, polydeg = 3,
                   initial_refinement_level = 1)
 
 semi = SemidiscretizationHyperbolic(mesh, equations, initial_condition, solver,

examples/t8code_2d_dgsem/elixir_advection_nonconforming_flag.jl

@@ -18,14 +18,14 @@ f3(s) = SVector(s, -1.0 + sin(0.5 * pi * s))
 f4(s) = SVector(s, 1.0 + sin(0.5 * pi * s))
 
 faces = (f1, f2, f3, f4)
-mapping = Trixi.transfinite_mapping(faces)
 
 # Create T8codeMesh with 3 x 2 trees and 6 x 4 elements,
 # approximate the geometry with a smaller polydeg for testing.
 trees_per_dimension = (3, 2)
 mesh = T8codeMesh(trees_per_dimension, polydeg = 3,
-                  mapping = mapping,
-                  initial_refinement_level = 1)
+                  faces = faces,
+                  initial_refinement_level = 1,
+                  periodicity = (true, true))
 
 # Note: This is actually a `p4est_quadrant_t` which is much bigger than the
 # following struct. But we only need the first three fields for our purpose.

examples/t8code_2d_dgsem/elixir_advection_unstructured_flag.jl

@@ -30,13 +30,8 @@ mapping_flag = Trixi.transfinite_mapping(faces)
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/63ff2ea224409e55ee8423b3a33e316a/raw/7db58af7446d1479753ae718930741c47a3b79b7/square_unstructured_2.inp",
                            joinpath(@__DIR__, "square_unstructured_2.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connecvity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(2))
-
-mesh = T8codeMesh(conn, polydeg = 3,
-                  mapping = mapping_flag,
+mesh = T8codeMesh(mesh_file, 2;
+                  mapping = mapping_flag, polydeg = 3,
                   initial_refinement_level = 2)
 
 # A semidiscretization collects data structures and functions for the spatial discretization.

examples/t8code_2d_dgsem/elixir_euler_free_stream.jl

@@ -32,12 +32,7 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/a075f8ec39a67fa9fad8f6f84342cbca/raw/a7206a02ed3a5d3cadacd8d9694ac154f9151db7/square_unstructured_1.inp",
                            joinpath(@__DIR__, "square_unstructured_1.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connecvity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(2))
-
-mesh = T8codeMesh(conn, polydeg = 3,
+mesh = T8codeMesh(mesh_file, 2; polydeg = 3,
                   mapping = mapping,
                   initial_refinement_level = 1)
 

examples/t8code_2d_dgsem/elixir_euler_source_terms_nonconforming_unstructured_flag.jl

@@ -32,12 +32,7 @@ mapping_flag = Trixi.transfinite_mapping(faces)
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/63ff2ea224409e55ee8423b3a33e316a/raw/7db58af7446d1479753ae718930741c47a3b79b7/square_unstructured_2.inp",
                            joinpath(@__DIR__, "square_unstructured_2.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connecvity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(2))
-
-mesh = T8codeMesh(conn, polydeg = 3,
+mesh = T8codeMesh(mesh_file, 2; polydeg = 3,
                   mapping = mapping_flag,
                   initial_refinement_level = 1)
 

examples/t8code_2d_dgsem/elixir_mhd_rotor.jl

@@ -70,12 +70,7 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/63ff2ea224409e55ee8423b3a33e316a/raw/7db58af7446d1479753ae718930741c47a3b79b7/square_unstructured_2.inp",
                            joinpath(@__DIR__, "square_unstructured_2.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connecvity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(2))
-
-mesh = T8codeMesh(conn, polydeg = 4,
+mesh = T8codeMesh(mesh_file, 2; polydeg = 4,
                   mapping = mapping_twist,
                   initial_refinement_level = 1)
 

examples/t8code_3d_dgsem/elixir_advection_amr_unstructured_curved.jl

@@ -50,12 +50,7 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/b8df0033798e4926dec515fc045e8c2c/raw/b9254cde1d1fb64b6acc8416bc5ccdd77a240227/cube_unstructured_2.inp",
                            joinpath(@__DIR__, "cube_unstructured_2.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connectivity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(3))
-
-mesh = T8codeMesh(conn, polydeg = 2,
+mesh = T8codeMesh(mesh_file, 3; polydeg = 2,
                   mapping = mapping,
                   initial_refinement_level = 1)
 

examples/t8code_3d_dgsem/elixir_advection_unstructured_curved.jl

@@ -47,12 +47,7 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/d45c8ac1e248618885fa7cc31a50ab40/raw/37fba24890ab37cfa49c39eae98b44faf4502882/cube_unstructured_1.inp",
                            joinpath(@__DIR__, "cube_unstructured_1.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connectivity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(3))
-
-mesh = T8codeMesh(conn, polydeg = 3,
+mesh = T8codeMesh(mesh_file, 3; polydeg = 3,
                   mapping = mapping,
                   initial_refinement_level = 2)
 

examples/t8code_3d_dgsem/elixir_euler_ec.jl

@@ -47,12 +47,7 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/b8df0033798e4926dec515fc045e8c2c/raw/b9254cde1d1fb64b6acc8416bc5ccdd77a240227/cube_unstructured_2.inp",
                            joinpath(@__DIR__, "cube_unstructured_2.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connectivity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(3))
-
-mesh = T8codeMesh(conn, polydeg = 5,
+mesh = T8codeMesh(mesh_file, 3; polydeg = 5,
                   mapping = mapping,
                   initial_refinement_level = 0)
 

examples/t8code_3d_dgsem/elixir_euler_free_stream.jl

@@ -48,12 +48,7 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/d45c8ac1e248618885fa7cc31a50ab40/raw/37fba24890ab37cfa49c39eae98b44faf4502882/cube_unstructured_1.inp",
                            joinpath(@__DIR__, "cube_unstructured_1.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connectivity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(3))
-
-mesh = T8codeMesh(conn, polydeg = 2,
+mesh = T8codeMesh(mesh_file, 3; polydeg = 2,
                   mapping = mapping,
                   initial_refinement_level = 0)
 

examples/t8code_3d_dgsem/elixir_euler_free_stream_extruded.jl

@@ -37,12 +37,7 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/b8df0033798e4926dec515fc045e8c2c/raw/b9254cde1d1fb64b6acc8416bc5ccdd77a240227/cube_unstructured_2.inp",
                            joinpath(@__DIR__, "cube_unstructured_2.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connecvity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(3))
-
-mesh = T8codeMesh(conn, polydeg = 3,
+mesh = T8codeMesh(mesh_file, 3; polydeg = 3,
                   mapping = mapping,
                   initial_refinement_level = 0)
 

examples/t8code_3d_dgsem/elixir_euler_source_terms_nonconforming_unstructured_curved.jl

@@ -50,13 +50,8 @@ end
 mesh_file = Trixi.download("https://gist.githubusercontent.com/efaulhaber/d45c8ac1e248618885fa7cc31a50ab40/raw/37fba24890ab37cfa49c39eae98b44faf4502882/cube_unstructured_1.inp",
                            joinpath(@__DIR__, "cube_unstructured_1.inp"))
 
-# INP mesh files are only support by p4est. Hence, we
-# create a p4est connecvity object first from which
-# we can create a t8code mesh.
-conn = Trixi.read_inp_p4est(mesh_file, Val(3))
-
 # Mesh polydeg of 2 (half the solver polydeg) to ensure FSP (see above).
-mesh = T8codeMesh(conn, polydeg = 2,
+mesh = T8codeMesh(mesh_file, 3; polydeg = 2,
                   mapping = mapping,
                   initial_refinement_level = 0)
 

src/Trixi.jl

@@ -289,6 +289,8 @@ export PlotData1D, PlotData2D, ScalarPlotData2D, getmesh, adapt_to_mesh_level!,
        adapt_to_mesh_level,
        iplot, iplot!
 
+export GmshFile, AbaqusFile
+
 function __init__()
     init_mpi()
 

src/auxiliary/auxiliary.jl

@@ -370,4 +370,14 @@ function download(src_url, file_path)
 
     return file_path
 end
+
+abstract type MeshFile{NDIMS} end
+
+struct GmshFile{NDIMS} <: MeshFile{NDIMS}
+    path::String
+end
+
+struct AbaqusFile{NDIMS} <: MeshFile{NDIMS}
+    path::String
+end
 end # @muladd

src/meshes/p4est_mesh.jl

@@ -387,12 +387,44 @@ function P4estMesh{NDIMS}(meshfile::String;
                             p4est_partition_allow_for_coarsening)
 end
 
+# Wrapper for `p4est_connectivity_from_hohqmesh_abaqus`. The latter is used
+# by `T8codeMesh`, too.
+function p4est_mesh_from_hohqmesh_abaqus(meshfile, initial_refinement_level,
+                                         n_dimensions, RealT)
+    connectivity, tree_node_coordinates, nodes, boundary_names = p4est_connectivity_from_hohqmesh_abaqus(meshfile,
+                                                                                                         initial_refinement_level,
+                                                                                                         n_dimensions,
+                                                                                                         RealT)
+
+    p4est = new_p4est(connectivity, initial_refinement_level)
+
+    return p4est, tree_node_coordinates, nodes, boundary_names
+end
+
+# Wrapper for `p4est_connectivity_from_standard_abaqus`. The latter is used
+# by `T8codeMesh`, too.
+function p4est_mesh_from_standard_abaqus(meshfile, mapping, polydeg,
+                                         initial_refinement_level, n_dimensions, RealT,
+                                         boundary_symbols)
+    connectivity, tree_node_coordinates, nodes, boundary_names = p4est_connectivity_from_standard_abaqus(meshfile,
+                                                                                                         mapping,
+                                                                                                         polydeg,
+                                                                                                         initial_refinement_level,
+                                                                                                         n_dimensions,
+                                                                                                         RealT,
+                                                                                                         boundary_symbols)
+
+    p4est = new_p4est(connectivity, initial_refinement_level)
+
+    return p4est, tree_node_coordinates, nodes, boundary_names
+end
+
 # Create the mesh connectivity, mapped node coordinates within each tree, reference nodes in [-1,1]
 # and a list of boundary names for the `P4estMesh`. High-order boundary curve information as well as
 # the boundary names on each tree are provided by the `meshfile` created by
 # [`HOHQMesh.jl`](https://github.com/trixi-framework/HOHQMesh.jl).
-function p4est_mesh_from_hohqmesh_abaqus(meshfile, initial_refinement_level,
-                                         n_dimensions, RealT)
+function p4est_connectivity_from_hohqmesh_abaqus(meshfile, initial_refinement_level,
+                                                 n_dimensions, RealT)
     # Create the mesh connectivity using `p4est`
     connectivity = read_inp_p4est(meshfile, Val(n_dimensions))
     connectivity_pw = PointerWrapper(connectivity)
@@ -440,18 +472,17 @@ function p4est_mesh_from_hohqmesh_abaqus(meshfile, initial_refinement_level,
         file_idx += 1
     end
 
-    p4est = new_p4est(connectivity, initial_refinement_level)
-
-    return p4est, tree_node_coordinates, nodes, boundary_names
+    return connectivity, tree_node_coordinates, nodes, boundary_names
 end
 
 # Create the mesh connectivity, mapped node coordinates within each tree, reference nodes in [-1,1]
 # and a list of boundary names for the `P4estMesh`. The tree node coordinates are computed according to
 # the `mapping` passed to this function using polynomial interpolants of degree `polydeg`. All boundary
 # names are given the name `:all`.
-function p4est_mesh_from_standard_abaqus(meshfile, mapping, polydeg,
-                                         initial_refinement_level, n_dimensions, RealT,
-                                         boundary_symbols)
+function p4est_connectivity_from_standard_abaqus(meshfile, mapping, polydeg,
+                                                 initial_refinement_level, n_dimensions,
+                                                 RealT,
+                                                 boundary_symbols)
     # Create the mesh connectivity using `p4est`
     connectivity = read_inp_p4est(meshfile, Val(n_dimensions))
     connectivity_pw = PointerWrapper(connectivity)
@@ -474,8 +505,6 @@ function p4est_mesh_from_standard_abaqus(meshfile, mapping, polydeg,
     calc_tree_node_coordinates!(tree_node_coordinates, nodes, mapping, vertices,
                                 tree_to_vertex)
 
-    p4est = new_p4est(connectivity, initial_refinement_level)
-
     if boundary_symbols === nothing
         # There's no simple and generic way to distinguish boundaries without any information given.
         # Name all of them :all.
@@ -495,7 +524,7 @@ function p4est_mesh_from_standard_abaqus(meshfile, mapping, polydeg,
                                            Val(n_dimensions))
     end
 
-    return p4est, tree_node_coordinates, nodes, boundary_names
+    return connectivity, tree_node_coordinates, nodes, boundary_names
 end
 
 function parse_elements(meshfile, n_trees, n_dims)