GuCenterExtents.h

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#ifndef GU_CENTER_EXTENTS_H
#define GU_CENTER_EXTENTS_H
 
#include "foundation/PxUserAllocated.h"
#include "foundation/PxBounds3.h"
 
namespace physx
{
namespace Gu
{
    class CenterExtents : public physx::PxUserAllocated
    {
        public:
        PX_FORCE_INLINE             CenterExtents()                     {}
        PX_FORCE_INLINE             CenterExtents(const PxBounds3& b)   { mCenter = b.getCenter();  mExtents = b.getExtents();  }
        PX_FORCE_INLINE             ~CenterExtents()                    {}
 
        PX_FORCE_INLINE void        getMin(PxVec3& min)     const       { min = mCenter - mExtents;                 }
        PX_FORCE_INLINE void        getMax(PxVec3& max)     const       { max = mCenter + mExtents;                 }
 
        PX_FORCE_INLINE float       getMin(PxU32 axis)      const       { return mCenter[axis] - mExtents[axis];    }
        PX_FORCE_INLINE float       getMax(PxU32 axis)      const       { return mCenter[axis] + mExtents[axis];    }
 
        PX_FORCE_INLINE PxVec3      getMin()                const       { return mCenter - mExtents;                }
        PX_FORCE_INLINE PxVec3      getMax()                const       { return mCenter + mExtents;                }
 
        PX_FORCE_INLINE void        setMinMax(const PxVec3& min, const PxVec3& max)
                                    {
                                        mCenter = (max + min)*0.5f;
                                        mExtents = (max - min)*0.5f;
                                    }
 
        PX_FORCE_INLINE PxU32       isInside(const CenterExtents& box)  const
                                    {
                                        if(box.getMin(0)>getMin(0)) return 0;
                                        if(box.getMin(1)>getMin(1)) return 0;
                                        if(box.getMin(2)>getMin(2)) return 0;
                                        if(box.getMax(0)<getMax(0)) return 0;
                                        if(box.getMax(1)<getMax(1)) return 0;
                                        if(box.getMax(2)<getMax(2)) return 0;
                                        return 1;
                                    }
 
        PX_FORCE_INLINE void        setEmpty()
                                    {
                                        mExtents = PxVec3(-PX_MAX_BOUNDS_EXTENTS);
                                    }
 
        PX_FORCE_INLINE bool        isEmpty()   const
                                    {
                                        PX_ASSERT(isValid());
                                        return mExtents.x<0.0f;
                                    }
 
        PX_FORCE_INLINE bool        isFinite()  const
                                    {
                                        return mCenter.isFinite() && mExtents.isFinite();
                                    }
 
        PX_FORCE_INLINE bool        isValid()   const
                                    {
                                        const PxVec3& c = mCenter;
                                        const PxVec3& e = mExtents;
                                        return (c.isFinite() && e.isFinite() && (((e.x >= 0.0f) && (e.y >= 0.0f) && (e.z >= 0.0f)) ||
                                                                                ((e.x == -PX_MAX_BOUNDS_EXTENTS) &&
                                                                                (e.y == -PX_MAX_BOUNDS_EXTENTS) &&
                                                                                (e.z == -PX_MAX_BOUNDS_EXTENTS))));
                                    }
 
        PX_FORCE_INLINE PxBounds3   transformFast(const PxMat33& matrix)    const
                                    {
                                        PX_ASSERT(isValid());
                                        return PxBounds3::basisExtent(matrix * mCenter, matrix, mExtents);
                                    }
 
                        PxVec3      mCenter;
                        PxVec3      mExtents;
    };
 
    class CenterExtentsPadded : public CenterExtents
    {
    public:
        PX_FORCE_INLINE CenterExtentsPadded()   {}
        PX_FORCE_INLINE ~CenterExtentsPadded()  {}
        PxU32   padding;
    };
    PX_COMPILE_TIME_ASSERT(sizeof(CenterExtentsPadded) == 7*4);
 
}
 
}
 
#endif