Add nanogui as external project

CMakeLists.txt

@@ -245,6 +245,7 @@ include(cmakemodules/script_libdc1394.cmake REQUIRED)   # Check for libdc1394-2
 include(cmakemodules/script_liblas.cmake REQUIRED)      # Check for the LAS LiDAR format library
 include(cmakemodules/script_libtclap.cmake REQUIRED)    # Check for system libtclap
 include(cmakemodules/script_matlab.cmake REQUIRED)      # Support for Matlab MEX functions generation
+include(cmakemodules/script_nanogui.cmake REQUIRED)     # Check for nanogui
 include(cmakemodules/script_national_instruments.cmake REQUIRED)  # NI C library
 include(cmakemodules/script_nite2.cmake REQUIRED)       # Check for NITE2 library
 include(cmakemodules/script_octomap.cmake REQUIRED)     # Check for the octomap library

cmakemodules/script_nanogui.cmake

@@ -0,0 +1,54 @@
+# Declares external project: nanogui
+#  https://github.com/wjakob/nanogui
+# ===================================================
+set(CMAKE_MRPT_HAS_NANOGUI 0)
+set(CMAKE_MRPT_HAS_NANOGUI_SYSTEM 0)
+
+set(EMBEDDED_NANOGUI_DIR "${MRPT_BINARY_DIR}/otherlibs/nanogui")
+
+set(BUILD_NANOGUI ON CACHE BOOL "Build an embedded version of nanogui (OpenGL GUIs)")
+if (BUILD_NANOGUI)
+	include(ExternalProject)
+
+	set(nanogui_PREFIX "${MRPT_BINARY_DIR}/otherlibs/nanogui")
+	set(nanogui_INSTALL_DIR "${MRPT_BINARY_DIR}/otherlibs/nanogui/install")
+	set(nanogui_CMAKE_ARGS
+		-DCMAKE_INSTALL_PREFIX=${nanogui_INSTALL_DIR}
+		-DNANOGUI_BUILD_PYTHON=OFF
+		-DNANOGUI_BUILD_EXAMPLE=OFF
+		-DCMAKE_LIBRARY_OUTPUT_PATH=${MRPT_BINARY_DIR}/lib
+		-DLIBRARY_OUTPUT_PATH=${MRPT_BINARY_DIR}/lib
+		-DCMAKE_RUNTIME_OUTPUT_DIRECTORY=${MRPT_BINARY_DIR}/bin
+		-DRUNTIME_OUTPUT_DIRECTORY=${MRPT_BINARY_DIR}/bin
+		-DCMAKE_DEBUG_POSTFIX=${CMAKE_DEBUG_POSTFIX}
+	)
+
+	# download from GH
+	ExternalProject_Add(EP_nanogui
+		PREFIX ${nanogui_PREFIX}
+		GIT_REPOSITORY https://github.com/wjakob/nanogui.git
+		GIT_SUBMODULES ext/eigen ext/glfw ext/nanovg # ext/pybind
+		INSTALL_DIR ${nanogui_INSTALL_DIR}
+		CMAKE_ARGS ${nanogui_CMAKE_ARGS}
+	)
+	set(CMAKE_MRPT_HAS_NANOGUI 1)
+	set(CMAKE_MRPT_HAS_NANOGUI_SYSTEM 0)
+endif()
+
+if (CMAKE_MRPT_HAS_ASSIMP)
+	if (NOT "${ASSIMP_LIBRARY_DIRS}" STREQUAL "")
+		link_directories("${ASSIMP_LIBRARY_DIRS}")
+	endif()
+
+	mark_as_advanced(ASSIMP_DIR)
+
+	if ($ENV{VERBOSE})
+		message(STATUS "Assimp:")
+		message(STATUS " ASSIMP_INCLUDE_DIRS: ${ASSIMP_INCLUDE_DIRS}")
+		message(STATUS " ASSIMP_CXX_FLAGS: ${ASSIMP_CXX_FLAGS}")
+		message(STATUS " ASSIMP_LINK_FLAGS: ${ASSIMP_LINK_FLAGS}")
+		message(STATUS " ASSIMP_LIBRARIES: ${ASSIMP_LIBRARIES}")
+		message(STATUS " ASSIMP_LIBRARY_DIRS: ${ASSIMP_LIBRARY_DIRS}")
+		message(STATUS " ASSIMP_VERSION: ${ASSIMP_VERSION}")
+	endif ($ENV{VERBOSE})
+endif (CMAKE_MRPT_HAS_ASSIMP)

cmakemodules/script_show_final_summary.cmake

@@ -141,8 +141,9 @@ SHOW_CONFIG_LINE_SYSTEM("yamlcpp (YAML file format)          " CMAKE_MRPT_HAS_YA
 message(STATUS  "")
 
 message(STATUS " ______________________ GUI LIBRARIES ______________________")
-SHOW_CONFIG_LINE       ("wxWidgets                           " CMAKE_MRPT_HAS_WXWIDGETS)
+SHOW_CONFIG_LINE       ("nanogui (OpenGL GUI)                " CMAKE_MRPT_HAS_NANOGUI)
 SHOW_CONFIG_LINE       ("Qt5                                 " CMAKE_MRPT_HAS_Qt5)
+SHOW_CONFIG_LINE       ("wxWidgets                           " CMAKE_MRPT_HAS_WXWIDGETS)
 message(STATUS  "")
 
 message(STATUS " _______________________ WRAPPERS/BINDINGS ______________________")

parse-files/config.h.in

@@ -78,6 +78,9 @@ ${CMAKE_MRPT_BUILD_SHARED_LIB}
 
 #define MRPT_HAS_Qt5              ${CMAKE_MRPT_HAS_Qt5}
 
+#define MRPT_HAS_NANOGUI          ${CMAKE_MRPT_HAS_NANOGUI}
+#define MRPT_HAS_NANOGUI_SYSTEM   ${CMAKE_MRPT_HAS_NANOGUI_SYSTEM}
+
 /** Has MRPT libjpeg? And whether it's in the system (Linux) or built-in (Windows, some rare cases in Linux). */
 #define MRPT_HAS_JPEG             ${CMAKE_MRPT_HAS_JPEG}
 #define MRPT_HAS_JPEG_SYSTEM      ${CMAKE_MRPT_HAS_JPEG_SYSTEM}