Work around apparent OSG 3.2.0 normal binding bug.

[simgear.git] / simgear / scene / util / SGPickCallback.hxx

diff --git a/simgear/scene/util/SGPickCallback.hxx b/simgear/scene/util/SGPickCallback.hxx
index a8bf82cbe80de676371f2d9b403f0c3b299f9c23..c41bce7233e8878e3510a5e64cd7c4c16601f1ea 100644 (file)
--- a/simgear/scene/util/SGPickCallback.hxx
+++ b/simgear/scene/util/SGPickCallback.hxx
@@ -22,26 +22,92 @@
 #ifndef SG_SCENE_PICKCALLBACK_HXX
 #define SG_SCENE_PICKCALLBACK_HXX
 
+#include <osg/Vec2d>
+   
 #include <simgear/structure/SGReferenced.hxx>
 #include <simgear/structure/SGSharedPtr.hxx>
 #include <simgear/math/SGMath.hxx>
 
+namespace osgGA { class GUIEventAdapter; }
+
 // Used to implement scenery interaction.
 // The interface is still under development
 class SGPickCallback : public SGReferenced {
 public:
+  enum Priority {
+    PriorityGUI = 0,
+    PriorityPanel = 1,
+    PriorityOther = 2,
+    PriorityScenery = 3
+  };
+
   struct Info {
     SGVec3d wgs84;
     SGVec3d local;
+    SGVec2d uv;
   };
 
+  SGPickCallback(Priority priority = PriorityOther) :
+    _priority(priority)
+  { }
+
   virtual ~SGPickCallback() {}
-  virtual bool buttonPressed(int button, const Info& info)
+
+  // TODO maybe better provide a single callback to handle all events
+  virtual bool buttonPressed( int button,
+                              const osgGA::GUIEventAdapter& ea,
+                              const Info& info )
   { return false; }
-  virtual void update(double dt)
+  
+  virtual void update(double dt, int keyModState)
+  { }
+
+  /**
+   * @param info    Can be null if no info is available (eg. mouse not over 3d
+   *                object anymore)
+   */
+  virtual void buttonReleased( int keyModState,
+                               const osgGA::GUIEventAdapter& ea,
+                               const Info* info )
   { }
-  virtual void buttonReleased(void)
+
+  /**
+   * @param info    Can be null if no info is available (eg. mouse not over 3d
+   *                object anymore)
+   */
+  virtual void mouseMoved( const osgGA::GUIEventAdapter& ea,
+                           const Info* info )
+  { }
+
+  /**
+   * The mouse is not hovering anymore over the element.
+   */
+  virtual void mouseLeave(const osg::Vec2d& windowPos)
   { }
+
+  virtual bool hover( const osg::Vec2d& windowPos,
+                      const Info& info )
+  {  return false; }
+
+  virtual Priority getPriority() const
+  { return _priority; }
+  
+  /**
+   * retrieve the name of the cursor to user when hovering this pickable
+   * object. Mapping is undefined, since SimGear doesn't know about cursors.
+   */
+  virtual std::string getCursor() const
+  { return std::string(); }
+
+  /**
+   * Whether the uv coordinates of the picking action should be calculated upon
+   * an intersection.
+   */
+  virtual bool needsUV() const
+  { return false; }
+
+private:
+  Priority _priority;
 };
 
 struct SGSceneryPick {