Add tetrahedral grid

.github/workflows/check-builds.yml

@@ -1,8 +1,7 @@
 # GitHub action workflow that checks the build process on multiple platforms.
 #
 # The workflow builds the code (without MPI and without MakeUp)
-# using GCC on Ubuntu and using Clang on macOS, in two different jobs.
-# Other compiler/platform combinations can be added if the need arises.
+# using various compilers and operating systems, in different jobs.
 # The workflow fails if there are any build errors and/or warnings.
 #
 name: Check builds
@@ -86,3 +85,30 @@ jobs:
     - name: Build
       shell: cmd
       run: cd release && cmake --build . -j 2
+
+  # Intel on Ubuntu
+  check_build_intel:
+    # job name, displayed in the action log
+    name: Build using Intel oneAPI on Ubuntu
+    # run this job on the Github-provided runner with a recent Ubuntu version
+    runs-on: ubuntu-22.04
+    # steps that make up this job
+    steps:
+    # checkout using a recent version of the checkout action
+    - name: Checkout
+      uses: actions/checkout@v3
+    # add Intel oneAPI to apt repository
+    - name: add oneAPI to apt
+      run: |
+        wget -O- https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB | gpg --dearmor | sudo tee /usr/share/keyrings/oneapi-archive-keyring.gpg > /dev/null
+        echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https://apt.repos.intel.com/oneapi all main" | sudo tee /etc/apt/sources.list.d/oneAPI.list
+        sudo apt update
+    # install Intel oneAPI
+    - name: install oneAPI
+      run: sudo apt install intel-oneapi-compiler-dpcpp-cpp
+    # configure the build files through CMake
+    - name: Configure
+      run: cmake -B release -DCMAKE_C_COMPILER=/opt/intel/oneapi/compiler/latest/bin/icx -DCMAKE_CXX_COMPILER=/opt/intel/oneapi/compiler/latest/bin/icpx -DCMAKE_BUILD_TYPE:STRING=Release -DWARNINGS_AS_ERRORS:BOOL=ON -DBUILD_DOX_STYLE:BOOL=ON -DBUILD_SMILE_SHAPES:BOOL=ON -DBUILD_SMILE_TOOL:BOOL=ON -L
+    # perform the actual build (Ubuntu runners have 2 cores)
+    - name: Build
+      run: make -C release -j 2

SKIRT/CMakeLists.txt

@@ -10,6 +10,7 @@
 # add all relevant subdirectories; each subdirectory defines a single target
 add_subdirectory(fitsio)
 add_subdirectory(voro)
+add_subdirectory(tetgen)
 add_subdirectory(mpi)
 add_subdirectory(utils)
 add_subdirectory(core)

SKIRT/core/CMakeLists.txt

@@ -22,8 +22,9 @@ target_link_libraries(${TARGET} schema fundamentals)
 include_directories(../../SMILE/schema ../../SMILE/fundamentals)
 
 # add SKIRT library dependencies
-target_link_libraries(${TARGET} fitsio voro mpi utils)
+target_link_libraries(${TARGET} fitsio voro mpi utils tetgen)
 include_directories(../fitsio ../voro ../mpi ../utils)
+include_directories(SYSTEM ../tetgen)  # suppress warnings in tetgen header
 
 # adjust C++ compiler flags to our needs
 include("../../SMILE/build/CompilerFlags.cmake")

SKIRT/core/SimulationItemRegistry.cpp

@@ -256,6 +256,7 @@
 #include "TTauriDiskGeometry.hpp"
 #include "TemperatureProbe.hpp"
 #include "TemperatureWavelengthCellLibrary.hpp"
+#include "TetraMeshSpatialGrid.hpp"
 #include "ThemisDustMix.hpp"
 #include "ToddlersSED.hpp"
 #include "ToddlersSEDFamily.hpp"
@@ -494,6 +495,7 @@ SimulationItemRegistry::SimulationItemRegistry(string version, string format)
     ItemRegistry::add<FileTreeSpatialGrid>();
     ItemRegistry::add<AdaptiveMeshSpatialGrid>();
     ItemRegistry::add<VoronoiMeshSpatialGrid>();
+    ItemRegistry::add<TetraMeshSpatialGrid>();
 
     // spatial grid policies
     ItemRegistry::add<TreePolicy>();