# Find OptiTrack
#
# This module defines
#  OptiTrack_FOUND
#  OptiTrack_INCLUDE_DIRS
#  OptiTrack_LIBRARIES
#
# Copyright (c) 2012 I-maginer
# 
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA, or go to
# http://www.gnu.org/copyleft/lesser.txt
#

# On a new cmake run, we do not need to be verbose
IF(OptiTrack_INCLUDE_DIR AND OptiTrack_LIBRARY)
	SET(OptiTrack_FIND_QUIETLY TRUE)
ENDIF()

# If OptiTrack_ROOT was defined in the environment, use it.
if (NOT OptiTrack_ROOT AND NOT $ENV{NP_CAMERASDK} STREQUAL "")
  set(OptiTrack_ROOT $ENV{NP_CAMERASDK})
endif()

# concat all the search paths
IF(OptiTrack_ROOT)
	SET(OptiTrack_INCLUDE_SEARCH_DIRS
	  ${OptiTrack_INCLUDE_SEARCH_DIRS}
	  ${OptiTrack_ROOT}/include
  )
  SET(OptiTrack_LIBRARY_SEARCH_DIRS 
    ${OptiTrack_LIBRARY_SEARCH_DIRS}
    ${OptiTrack_ROOT}/lib
  )
ENDIF()

# log message
IF (NOT OptiTrack_FIND_QUIETLY)
	MESSAGE(STATUS "Checking for Natural Point OptiTrack SDK")
ENDIF()

# Search for header files
FIND_PATH(OptiTrack_INCLUDE_DIR cameralibrary.h PATHS ${OptiTrack_INCLUDE_SEARCH_DIRS})

# Search for libraries files
if(WIN32 AND (WIN64 OR (CMAKE_SIZEOF_VOID_P EQUAL 8)))
  FIND_LIBRARY(OptiTrack_LIBRARY cameralibraryx64 PATHS ${OptiTrack_LIBRARY_SEARCH_DIRS})
else ()
  FIND_LIBRARY(OptiTrack_LIBRARY cameralibrary PATHS ${OptiTrack_LIBRARY_SEARCH_DIRS})  
endif ()

# Configure libraries
SET(OptiTrack_INCLUDE_DIRS ${OptiTrack_INCLUDE_DIR} CACHE STRING "Directory containing NaturalPoint OptiTrack SDK header files")
SET(OptiTrack_LIBRARIES ${OptiTrack_LIBRARY} CACHE STRING "NaturalPoint OptiTrack SDK libraries files")

# Hide those variables in GUI
SET(OptiTrack_INCLUDE_DIR ${OptiTrack_INCLUDE_DIR} CACHE INTERNAL "")
SET(OptiTrack_LIBRARY ${OptiTrack_LIBRARY} CACHE INTERNAL "")

IF(OptiTrack_INCLUDE_DIRS AND OptiTrack_LIBRARY)
	SET(OptiTrack_FOUND TRUE)
ENDIF()

# log find result
IF(OptiTrack_FOUND)
	IF(NOT OptiTrack_FIND_QUIETLY)
		MESSAGE(STATUS "  libraries: ${OptiTrack_LIBRARIES}")
		MESSAGE(STATUS "  includes: ${OptiTrack_INCLUDE_DIRS}")
	ENDIF()
ELSE(OptiTrack_FOUND)
	IF(NOT OptiTrack_LIBRARIES)
		MESSAGE(STATUS, "NaturalPoint OptiTrack SDK library files could not be found")
	ENDIF()
	IF(NOT OptiTrack_INCLUDE_DIRS)
		MESSAGE(STATUS "NaturalPoint OptiTrack SDK include files could not be found")
	ENDIF()
ENDIF(OptiTrack_FOUND)