fbxnurbscurve.h

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/****************************************************************************************
 
   Copyright (C) 2012 Autodesk, Inc.
   All rights reserved.
 
   Use of this software is subject to the terms of the Autodesk license agreement
   provided at the time of installation or download, or which otherwise accompanies
   this software in either electronic or hard copy form.
 
****************************************************************************************/

#ifndef _FBXSDK_SCENE_GEOMETRY_NURBS_CURVE_H_
#define _FBXSDK_SCENE_GEOMETRY_NURBS_CURVE_H_

#include <fbxsdk/fbxsdk_def.h>

#include <fbxsdk/scene/geometry/fbxgeometry.h>
#include <fbxsdk/scene/geometry/fbxline.h>

#include <fbxsdk/fbxsdk_nsbegin.h>

class FBXSDK_DLL FbxNurbsCurve : public FbxGeometry 
{
    FBXSDK_OBJECT_DECLARE(FbxNurbsCurve,FbxGeometry);

public:
    virtual FbxNodeAttribute::EType GetAttributeType() const;

    enum EDimension
    {
        e2D = 2,
        e3D
    };

    enum EType
    {
        eOpen,
        eClosed,
        ePeriodic
    }; 

    void InitControlPoints( int pCount, EType pVType );

    inline double* GetKnotVector() const { return mKnotVector; }

    int GetKnotCount() const;

    inline void SetOrder( int pOrder ) { mOrder = pOrder; }

    inline int GetOrder() const { return mOrder; }

    inline void SetStep( int pStep ) { mStep = pStep; }

    inline int GetStep() const { return mStep; }

    inline void SetDimension( EDimension pDimension ) { mDimension = pDimension; }

    inline EDimension GetDimension() const { return mDimension; }

    bool IsRational(); 

    int GetSpanCount() const;

    inline EType GetType() const { return mNurbsType; }

    inline bool IsPolyline() const { return ( GetOrder() == 2 ); }

    bool IsBezier() const;

    int TessellateCurve(FbxArray<FbxVector4>& pPointArray, int pStep = 16);

    FbxLine* TessellateCurve(int pStep = 16);

//
//  WARNING!
//
//  Anything beyond these lines may not be documented accurately and is 
//  subject to change without notice.
//
#ifndef DOXYGEN_SHOULD_SKIP_THIS

    virtual FbxObject& Copy(const FbxObject& pObject);

    bool FullMultiplicity() const;

    // Error identifiers, these are only used internally.
    enum EErrorCode
    {
        eNurbsCurveTypeUnknown,
        eWeightTooSmall,
        eKnotVectorError,
        eWrongNumberOfControlPoint,
        eErrorCount
    };

protected:
    FbxNurbsCurve(FbxManager& pManager, char const* pName);
    
    void Reset();

    virtual void Destruct(bool pRecursive, bool pDependents);

public:
    //To maintain compatibility
    bool mIsRational;

private:
    double* mKnotVector;
    EType mNurbsType;
    int mOrder;
    EDimension mDimension; 
    //To tessellate curve, it denotes the evaluation frequency between two neighbor knots.
    int mStep;
#endif
};

#include <fbxsdk/fbxsdk_nsend.h>

#endif /* _FBXSDK_SCENE_GEOMETRY_NURBS_CURVE_H_ */