feat (WIP): base VTK visualisation of Eulerian flow fields

vtk/src/CMakeLists.txt

@@ -0,0 +1,55 @@
+cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
+
+project(VtkBase)
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+find_package(VTK COMPONENTS 
+  CommonColor
+  CommonCore
+  CommonDataModel
+  FiltersGeneral
+  InteractionStyle
+  RenderingContextOpenGL2
+  RenderingCore
+  RenderingFreeType
+  RenderingGL2PSOpenGL2
+  RenderingOpenGL2
+    CommonColor
+    FiltersGeometry
+    RenderingCore)
+
+if (NOT VTK_FOUND)
+  message(FATAL_ERROR "VtkBase: Unable to find the VTK build folder.")
+endif()
+
+# netcdf setup
+find_package(netCDF REQUIRED)
+
+add_executable(VtkBase MACOSX_BUNDLE main.cpp )
+
+execute_process(
+    COMMAND nc-config --includedir
+    OUTPUT_VARIABLE NETCDF_INCLUDE_DIR
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+execute_process(
+    COMMAND ncxx4-config --libdir
+    OUTPUT_VARIABLE NETCDFCXX_LIB_DIR
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+target_include_directories(VtkBase PUBLIC ${netCDF_INCLUDE_DIR})
+
+find_library(NETCDF_LIB NAMES netcdf-cxx4 netcdf_c++4 PATHS ${NETCDFCXX_LIB_DIR} NO_DEFAULT_PATH)
+
+# Prevent a "command line is too long" failure in Windows.
+set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
+target_link_libraries(VtkBase ${NETCDF_LIB} ${VTK_LIBRARIES})
+
+# vtk_module_autoinit is needed
+vtk_module_autoinit(
+  TARGETS VtkBase
+  MODULES ${VTK_LIBRARIES}
+)