OpenPaperOpt/RayTag.h

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#ifndef RAYTAG_H
#define RAYTAG_H

#include <float.h>


#define FLT_QNAN   0xffc00000

namespace p3d{

        class RayTag {

        public:

                RayTag()        {Reset();}

                void Reset()    {rayNo=0;SetNohit();}
                void SetNohit() {*(int*)&t=FLT_QNAN;}
                int  IsNoHit()  {return _isnan(t);}

                int   rayNo;
                float t;     //nan->NoHit
        };
}
#endif