NxCurve.h

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#ifndef NX_CURVE_H
#define NX_CURVE_H

#include "NxApex.h"
#include "NxParameterized.h"

namespace physx
{
namespace apex
{

PX_PUSH_PACK_DEFAULT

template <typename T>
struct NxVec2T
{
    NxVec2T(T _x = T(), T _y = T()) : x(_x), y(_y) { }

    T x, y;

    T& operator[](physx::PxU32 ndx)
    {
        PX_ASSERT(ndx < 2);
        return ((T*)&x)[ndx];
    }
};

// Some useful typedefs
typedef NxVec2T<physx::PxF32> NxVec2R;

class NxCurve
{
public:
    virtual ~NxCurve() {}

    virtual physx::PxF32 evaluate(physx::PxF32 x) const = 0;

    virtual physx::PxU32 addControlPoint(const NxVec2R& controlPoint) = 0;

    virtual void addControlPoints(::NxParameterized::Interface* param, ::NxParameterized::Handle& hPoints) = 0;

    virtual bool calculateControlPoints(physx::PxF32 x, NxVec2R& outXPoints, NxVec2R& outYPoints) const = 0;

    virtual physx::PxU32 calculateFollowingControlPoint(physx::PxF32 xValue) const = 0;

    virtual const NxVec2R* getControlPoints(physx::PxU32& outCount) const = 0;
};

PX_POP_PACK

}
} // namespace apex

#endif // NX_CURVE_H