source: GTP/trunk/Lib/Vis/Preprocessing/src/OcclusionQuery.h @ 2663

#ifndef _OcclusionQuery_H__
#define _OcclusionQuery_H__

#include <vector>


namespace GtpVisibilityPreprocessor { 

/** This class is an implementation for occlusion queries.
        @remark the class encapsulates occlusion query calls.
*/
class OcclusionQuery
{
public:
        
        OcclusionQuery();

        virtual ~OcclusionQuery();

        virtual bool ResultAvailable() const;
        virtual unsigned int GetQueryResult() const;
        virtual void BeginQuery();
        virtual void EndQuery();
        
        static void GenQueries(std::vector<OcclusionQuery *> &queries, int numQueries);

        unsigned int GetQueryId() const;


protected:

        OcclusionQuery(const unsigned int idx);
        
        unsigned int mId;
};

} // namespace 
#endif // OcclusionQuery_H