Add Leapmotion support for Apple build

- Add LEapmotion support in the CMake files
- fix a template syntax in DeviceHEader not compiling on mac
- add a missing #ifdef protection in Leapmotion

cmake/modules/FindLeapMotion.cmake

@@ -23,6 +23,9 @@ else (LEAPMOTION_LIBRARIES AND LEAPMOTION_INCLUDE_DIRS)
   if (WIN32)
     find_library(LEAPMOTION_LIBRARIES Leap.lib ${LEAPMOTION_ROOT_DIR}/lib/x86)
   endif (WIN32)
+  if (APPLE)
+    find_library(LEAPMOTION_LIBRARIES libLeap.dylib ${LEAPMOTION_ROOT_DIR}/lib)
+  endif (OSX)
  
   if (LEAPMOTION_INCLUDE_DIRS AND LEAPMOTION_LIBRARIES)
     set(LEAPMOTION_FOUND TRUE)

interface/CMakeLists.txt

@@ -214,6 +214,10 @@ endif (PRIOVR_FOUND AND NOT DISABLE_PRIOVR)
 if (LEAPMOTION_FOUND AND NOT DISABLE_LEAPMOTION)
     add_definitions(-DHAVE_LEAPMOTION)
     include_directories(SYSTEM "${LEAPMOTION_INCLUDE_DIRS}")
+
+    if (APPLE OR UNIX)
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -isystem ${LEAPMOTION_INCLUDE_DIRS}")
+    endif ()
     target_link_libraries(${TARGET_NAME} "${LEAPMOTION_LIBRARIES}")
 endif (LEAPMOTION_FOUND AND NOT DISABLE_LEAPMOTION)
 

interface/src/devices/DeviceTracker.cpp

@@ -12,7 +12,8 @@
 #include "DeviceTracker.h"
 
 // The singleton managing the connected devices
-DeviceTracker::Singleton DeviceTracker::Singleton::_singleton;
+//template <> DeviceTracker::Singleton DeviceTracker::Singleton::_singleton;
+//TemplateSingleton<DeviceTracker::SingletonData>::_singleton;
 
 int DeviceTracker::init() {
     return Singleton::get()->_devicesMap.size();

interface/src/devices/DeviceTracker.h

@@ -18,16 +18,11 @@
 //--------------------------------------------------------------------------------------
 // Singleton template class
 //--------------------------------------------------------------------------------------
-template < class T >
-class TemplateSingleton
-{
-    static TemplateSingleton< T > _singleton;
-    T* _one;
-
+template < typename T >
+class TemplateSingleton {
 public:
 
-    static T* get()
-    {
+    static T* get() {
         if ( !_singleton._one ) {
             _singleton._one = new T();
         }
@@ -38,14 +33,18 @@ public:
         _one(0)
         {
         }
-    ~TemplateSingleton()
-    {
+    ~TemplateSingleton() {
         if ( _one ) {
             delete _one;
             _one = 0;
         }
     }
+private:
+    static TemplateSingleton< T > _singleton;
+    T* _one;
 };
+template <typename T>
+TemplateSingleton<T> TemplateSingleton<T>::_singleton;
 
 /// Base class for device trackers.
 class DeviceTracker : public QObject {
@@ -78,8 +77,7 @@ protected:
 
 private:
 
-    struct SingletonData
-    {
+    struct SingletonData {
         typedef std::map< Name, int > Map;
         typedef std::vector< DeviceTracker* > Vector;
         Map     _devicesMap;

interface/src/devices/Leapmotion.cpp

@@ -323,8 +323,8 @@ void Leapmotion::update() {
 
     // Get the most recent frame and report some basic information
     const Leap::Frame frame = _controller.frame();
-    static _int64 lastFrame = -1;
-    _int64 newFrameNb = frame.id();
+    static int64_t lastFrame = -1;
+    int64_t newFrameNb = frame.id();
 
     if ( (lastFrame >= newFrameNb) )
         return;
@@ -460,7 +460,8 @@ void Leapmotion::update() {
 }
 
 void Leapmotion::reset() {
-   // By default we assume the _neckBase (in orb frame) is as high above the orb 
+#ifdef HAVE_LEAPMOTION
+    // By default we assume the _neckBase (in orb frame) is as high above the orb
     // as the "torso" is below it.
     _leapBasePos = glm::vec3(0, -LEAP_Y, LEAP_Z);
 
@@ -469,6 +470,7 @@ void Leapmotion::reset() {
     glm::vec3 zAxis = glm::normalize(glm::cross(xAxis, yAxis));
     xAxis = glm::normalize(glm::cross(yAxis, zAxis));
     _leapBaseOri = glm::inverse(glm::quat_cast(glm::mat3(xAxis, yAxis, zAxis)));
+#endif
 }
 
 void Leapmotion::updateEnabled() {