GuSeparatingAxes.h

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#ifndef GU_SEPARATINGAXES_H
#define GU_SEPARATINGAXES_H
 
#include "foundation/PxVec3.h"
#include "common/PxPhysXCommonConfig.h"
 
namespace physx
{
namespace Gu
{
    // PT: this is a number of axes. Multiply by sizeof(PxVec3) for size in bytes.
    #define SEP_AXIS_FIXED_MEMORY   256
 
    // This class holds a list of potential separating axes.
    // - the orientation is irrelevant so V and -V should be the same vector
    // - the scale is irrelevant so V and n*V should be the same vector
    // - a given separating axis should appear only once in the class
#if PX_VC 
    #pragma warning(push)
    #pragma warning( disable : 4251 ) // class needs to have dll-interface to be used by clients of class
#endif
    class PX_PHYSX_COMMON_API SeparatingAxes
    {
    public:
        PX_INLINE SeparatingAxes() : mNbAxes(0) {}
 
        bool addAxis(const PxVec3& axis);
 
        PX_FORCE_INLINE const PxVec3* getAxes() const
        {
            return mAxes;
        }
 
        PX_FORCE_INLINE PxU32 getNumAxes() const
        {
            return mNbAxes;
        }
 
        PX_FORCE_INLINE void reset()
        {
            mNbAxes = 0;
        }
 
    private:
        PxU32   mNbAxes;
        PxVec3  mAxes[SEP_AXIS_FIXED_MEMORY];
    };
#if PX_VC 
     #pragma warning(pop) 
#endif
 
    enum PxcSepAxisType
    {
        SA_NORMAL0,     // Normal of object 0
        SA_NORMAL1,     // Normal of object 1
        SA_EE           // Cross product of edges
    };
 
}
}
 
#endif