# The name of our project is "GNURBS". CMakeLists files in this project can
# refer to the root source directory of the project as ${HELLO_SOURCE_DIR} and
# to the root binary directory of the project as ${HELLO_BINARY_DIR}.
cmake_minimum_required (VERSION 3.10 FATAL_ERROR)

if(DEFINED CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE} CACHE STRING "Choose build type")
else(DEFINED CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose build type")
endif(DEFINED CMAKE_BUILD_TYPE)

project(GNURBS)
option(GNURBS_ENABLE_TEST "Enable Testing-related binary targets" ON)
option(GNURBS_ENABLE_VTK_INTERFACE  "Enable VTK integration targets" ON)

add_subdirectory(nutil)
include_directories (${GNURBS_SOURCE_DIR}/nutil)
link_directories (${GNURBS_BINARY_DIR}/nutil)
add_subdirectory(api)
include_directories (${GNURBS_SOURCE_DIR}/api)
link_directories (${GNURBS_BINARY_DIR}/api)


if(GNURBS_ENABLE_VTK_INTERFACE)
# Find VTK
find_package(VTK REQUIRED)
if(NOT VTK_DIR)
message(FATAL_ERROR "Please set VTK_DIR.")
endif(NOT VTK_DIR)
include(${VTK_USE_FILE})
include_directories (${GNURBS_SOURCE_DIR}/vtk)
include_directories (${GNURBS_SOURCE_DIR}/nutil/vtkdisplay)
add_subdirectory(vtk)
link_directories (${GNURBS_BINARY_DIR}/vtk)
link_directories (${GNURBS_BINARY_DIR}/nutil/vtkdisplay)
endif(GNURBS_ENABLE_VTK_INTERFACE)
add_subdirectory(test)