Allow for TetGen v3

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changes
 
+## v2.7.0 October 10, 2026
+- Allow for TetGen.jl version 3. Consult the [TetGen.jl README](https://github.com/JuliaGeometry/TetGen.jl/blob/master/README.md) for
+  information on the different versions the upstream C++ TetGen code and its Julia binary package TetGen_jll.jl.
+
 ## v2.6.0 June 24, 2025
 
 - Fixed `minangle` parameter forwarding to TetGen

Project.toml

@@ -1,7 +1,7 @@
 name = "SimplexGridFactory"
 uuid = "57bfcd06-606e-45d6-baf4-4ba06da0efd5"
+version = "2.7.0"
 authors = ["Juergen Fuhrmann <juergen.fuhrmann@wias-berlin.de>", "Patrick Jaap <patrick.jaap@wias-berlin.de>"]
-version = "2.6.1"
 
 [deps]
 DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
@@ -26,6 +26,6 @@ GridVisualize = "1.7.0"
 LinearAlgebra = "1.9"
 MeshIO = "0.4, 0.5"
 Printf = "1.6"
-TetGen = "1.5,2"
+TetGen = "1.5,2,3"
 Triangulate = "2.3.1, 3"
 julia = "1.9"

test/Project.toml

@@ -9,4 +9,5 @@ LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 TetGen = "c5d3f3f7-f850-59f6-8a2e-ffc6dc1317ea"
+TetGen_jll = "b47fdcd6-d2c1-58e9-bbba-c1cee8d8c179"
 Triangulate = "f7e6ffb2-c36d-4f8f-a77e-16e897189344"

test/runtests.jl

@@ -8,7 +8,7 @@ using ExtendableGrids
 using CairoMakie
 using GridVisualize
 using Triangulate
-using TetGen
+using TetGen, TetGen_jll
 using LinearAlgebra
 
 
@@ -47,7 +47,7 @@ CairoMakie.activate!(; visible = false)
 # Generated point numbers depend on floating point operations,
 # so we don't insist in exact matches
 function testgrid(grid::ExtendableGrid, testdata)
-    return all(isapprox.((num_nodes(grid), num_cells(grid), num_bfaces(grid)), testdata, rtol = 0.1))
+    return all(isapprox.((num_nodes(grid), num_cells(grid), num_bfaces(grid)), testdata, rtol = 0.2))
 end
 testgrid(builder::SimplexGridBuilder, testdata) = testgrid(simplexgrid(builder), testdata)
 
@@ -91,6 +91,7 @@ testgrid(builder::SimplexGridBuilder, testdata) = testgrid(simplexgrid(builder),
 
         grid = simplexgrid(points, cells, cellregions, bfaces, bfaceregions)
     end
+
     @test testgrid(test_ctriangulateio(), (177, 319, 33))
 
     function test_triangulateio()
@@ -225,11 +226,18 @@ end
         grid = simplexgrid(SimplexGridFactory.TetGenType, TetGen, tio; kwargs...)
     end
 
-    @test testgrid(test_simplecube(), (109, 286, 198))
-    @test testgrid(test_simplecube(; flags = "pAaqQD"), (109, 286, 198))
-    @test testgrid(test_simplecube(; maxvolume = 0.05), (50, 68, 96))
+    if pkgversion(TetGen_jll) < v"1.6.0"
+        @test testgrid(test_simplecube(), (109, 286, 198))
+        @test testgrid(test_simplecube(; flags = "pAaqQD"), (109, 286, 198))
+        @test testgrid(test_simplecube(; maxvolume = 0.05), (50, 68, 96))
+        @test testgrid(test_simplecube(; unsuitable = test_tetunsuitable), (242, 1095, 198))
+    else
+        @test testgrid(test_simplecube(), (63, 192, 96))
+        @test testgrid(test_simplecube(; flags = "pAaqQD"), (63, 192, 96))
+        @test testgrid(test_simplecube(; maxvolume = 0.05), (14, 24, 24))
+        @test testgrid(test_simplecube(; unsuitable = test_tetunsuitable), (167, 788, 110))
 
-    @test testgrid(test_simplecube(; unsuitable = test_tetunsuitable), (242, 1095, 198))
+    end
 end
 
 @testset "SimplexGridBuilder 3d" begin
@@ -269,7 +277,11 @@ end
     end
 
     @test SimplexGridFactory.tetgenio(test_buildercube0()) isa RawTetGenIO
-    @test testgrid(test_buildercube(; unsuitable = test_tetunsuitable), (242, 1095, 198))
+    if pkgversion(TetGen_jll) < v"1.6.0"
+        @test testgrid(test_buildercube(; unsuitable = test_tetunsuitable), (242, 1095, 198))
+    else
+        @test testgrid(test_buildercube(; unsuitable = test_tetunsuitable), (167, 788, 110))
+    end
 end
 
 @testset "examples2d.jl" begin
@@ -286,10 +298,17 @@ end;
 
 @testset "examples3d.jl" begin
     include("../examples/examples3d.jl")
-    @test testgrid(tetrahedralization_of_cube(), (718, 2456, 1094))
-    @test testgrid(tet_cube_with_primitives(), (5658, 27324, 6888))
-    @test testgrid(glue_3d(), (29832, 173202, 13200))
-    @test testgrid(stl_3d(), (5979, 20640, 9818))
+    if pkgversion(TetGen_jll) < v"1.6.0"
+        @test testgrid(tetrahedralization_of_cube(), (718, 2456, 1094))
+        @test testgrid(tet_cube_with_primitives(), (5658, 27324, 6888))
+        @test testgrid(glue_3d(), (29832, 173202, 13200))
+        @test testgrid(stl_3d(), (5979, 20640, 9818))
+    else
+        @test testgrid(tetrahedralization_of_cube(), (417, 1755, 484))
+        @test testgrid(tet_cube_with_primitives(), (4186, 21037, 3830))
+        @test testgrid(glue_3d(), (29832, 173202, 13200))
+        @test testgrid(stl_3d(), (2869, 10116, 4584))
+    end
 end;
 
 # @testset "    PlutoGridFactory.jl" begin
@@ -387,8 +406,13 @@ end;
     end
     @test testgrid(prim2d(), (106, 179, 50))
     @test testgrid(prim2d_lineto(), (24, 30, 16))
-    @test testgrid(prim3d(), (591, 2872, 822))
-    @test testgrid(prim3d_moveto(), (207, 564, 368))
+    if pkgversion(TetGen_jll) < v"1.6.0"
+        @test testgrid(prim3d(), (591, 2872, 822))
+        @test testgrid(prim3d_moveto(), (207, 564, 368))
+    else
+        @test testgrid(prim3d(), (509, 2705, 652))
+        @test testgrid(prim3d_moveto(), (137, 446, 214))
+    end
 end
 
 @testset "builderplot" begin