source: GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/include/OgrePlatformQueryManager.h @ 2255

#ifndef _PlatformQueryManager_H__
#define _PlatformQueryManager_H__

#include "VisibilityInfo.h"
#include "QueryManager.h"
#include "HierarchyInterface.h"

namespace Ogre {
  
/**
        Class which implements the QueryManager for Ogre scene queries.
*/
class __declspec(dllexport) PlatformQueryManager: public GtpVisibility::QueryManager
{
public:
    /** Constructor taking a hierarchy interface as an argument. This allows to operate
            on different hierarchy types, while reusing the implementation of the query methods.
    */
        PlatformQueryManager(GtpVisibility::HierarchyInterface *hierarchyInterface, 
                                 Viewport *vp, 
                                                 int queryModes);
    
    /** 
        Uses the specified point to execute the visibility query in all directions. 
        @sa ComputeCameraVisibility()
    */
    void ComputeFromPointVisibility(const Vector3 &point,
                                                                        GtpVisibility::NodeInfoContainer *visibleNodes,
                                                                        GtpVisibility::MeshInfoContainer *visibleGeometry,
                                                                        GtpVisibility::PatchInfoContainer *visiblePatches,
                                                                        const bool relativeVisibility,
                                                                        const bool approximateVisibility);
  
        void ComputeCameraVisibility(const Camera &camera,
                                                                 GtpVisibility::NodeInfoContainer *visibleNodes,
                                                                 GtpVisibility::MeshInfoContainer *visibleGeometry,
                                                                 GtpVisibility::PatchInfoContainer *visiblePatches,
                                                                 const bool relativeVisibility,
                                                                 const bool approximateVisibility);
  
        bool ShootRay(const Ray &ray, std::vector<Mesh *> *visibleMeshes, bool isGlobalLine = false);  

        /** Sets a viewport for rendering.
        */
        void SetViewport(Viewport *vp);

protected:
#ifdef ITEM_BUFFER
        void CollectItemBufferResults(
                                GtpVisibility::MeshInfoContainer *visibleGeometry,
                                GtpVisibility::PatchInfoContainer *visiblePatches);

        void InitItemBuffer(GtpVisibility::MeshInfoContainer *visibleGeometry,
                                                GtpVisibility::PatchInfoContainer *visiblePatches);
#endif // ITEM_BUFFER

        Viewport *mViewport;
        
        bool mWasInitialised;
};

} // namespace Ogre

#endif // PlatformQueryManager