FbxNurbs Class Reference

This reference page is linked to from the following overview topics: Supported Scene Elements, FBX Node Attributes, List of Python Fbx classes.

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Detailed Description

A NURBS surface is a type of parametric geometry.

A NURBS surface is defined by the order, form, knot vector and control points in the U and V coordinates.

For more information on the meaning of form, knot vectors and control points, see the FbxNurbsCurve documentation. The same rules apply for the NURBS curves and NURBS surfaces, but NURBS surfaces have two dimensions (U and V).

Definition at line 31 of file fbxnurbs.h.

#include <fbxnurbs.h>

Inheritance diagram for FbxNurbs:

List of all members.

Public Types
enum	EErrorCode {   eNurbsTypeUnknown, eWrongNumberOfControlPoint, eWeightTooSmall, eUMultiplicityVectorError,   eVMultiplicityVectorError, eUKnotVectorError, eVKnotVectorError, eErrorCount }
Public Member Functions
virtual FbxNodeAttribute::EType	GetAttributeType () const
	Returns the FbxNodeAttribute::EType::eNurbs node attribute type.
void	Reset ()
	Resets the NURBS surface its default values.
virtual FbxObject &	Copy (const FbxObject &pObject)
	Copy an object content into this object.
Protected Member Functions
virtual void	Construct (const FbxNurbs *pFrom)
virtual void	Destruct (bool pRecursive)
	Optional destructor override, automatically called by default destructor.
Protected Attributes
FbxUInt	mUOrder
FbxUInt	mVOrder
int	mUCount
int	mVCount
int	mUStep
int	mVStep
EType	mUType
EType	mVType
double *	mUKnotVector
double *	mVKnotVector
int *	mUMultiplicityVector
int *	mVMultiplicityVector
ESurfaceMode	mSurfaceMode
bool	mApplyFlipUV
bool	mApplyFlipLinks
Friends
class	FbxGeometryConverter
NURBS surface Properties
enum	EType { ePeriodic, eClosed, eOpen }
	Node attribute types. More...
void	SetSurfaceMode (FbxGeometry::ESurfaceMode pMode)
	Sets the surface mode.
ESurfaceMode	GetSurfaceMode () const
	Returns the surface mode.
void	InitControlPoints (int pUCount, EType pUType, int pVCount, EType pVType)
	Allocates memory space for an array of control points as well as knot and multiplicity vectors.
int	GetUCount () const
	Returns the number of U-dimension control points.
int	GetVCount () const
	Returns the number of V-dimension control points.
EType	GetNurbsUType () const
	Returns the U-dimension NURBS type.
EType	GetNurbsVType () const
	Returns the V-dimension NURBS type.
int	GetUKnotCount () const
	Returns the number of elements in the U-dimension knot vector.
double *	GetUKnotVector () const
	Returns the U-dimension knot vector.
int	GetVKnotCount () const
	Returns the number of elements in the V-dimension knot vector.
double *	GetVKnotVector () const
	Returns the V-dimension knot vector.
int *	GetUMultiplicityVector () const
	Returns multiplicity of U-dimension control points.
int *	GetVMultiplicityVector () const
	Returns multiplicity of V-dimension control points.
void	SetOrder (FbxUInt pUOrder, FbxUInt pVOrder)
	Sets the order of the NURBS surface.
int	GetUOrder () const
	Returns the NURBS order in U dimension.
int	GetVOrder () const
	Returns the NURBS order in V dimension.
void	SetStep (int pUStep, int pVStep)
	Sets the NURBS step.
int	GetUStep () const
	Returns the number of divisions between adjacent control points in U dimension.
int	GetVStep () const
	Returns the number of divisions between adjacent control points in V dimension.
int	GetUSpanCount () const
	Calculates the number of surface spans in the U dimension.
int	GetVSpanCount () const
	Calculates the number of surface spans in the V dimension.
NURBS Export Flags
void	SetApplyFlipUV (bool pFlag)
	Sets the flag that induces UV flipping at export.
bool	GetApplyFlipUV () const
	Returns the flag that induces UV flipping at export.
void	SetApplyFlipLinks (bool pFlag)
	Sets the flag that induces link flipping at export.
bool	GetApplyFlipLinks () const
	Returns the flag that induces link flipping at export.
bool	GetApplyFlip () const
	Returns flip flags state.

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Member Enumeration Documentation

enum EType

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Node attribute types.

• eUnknown
• eNull
• eMarker
• eSkeleton
• eMesh
• eNurbs
• ePatch
• eCamera
• eCameraStereo,
• eCameraSwitcher
• eLight
• eOpticalReference
• eOpticalMarker
• eNurbsCurve
• eTrimNurbsSurface
• eBoundary
• eNurbsSurface
• eShape
• eLODGroup
• eSubDiv
• eCachedEffect
• eLine

Enumerator:

ePeriodic	Search for all occurrences
eClosed	Search for all occurrences
eOpen	Search for all occurrences

Reimplemented from FbxNodeAttribute.

Definition at line 62 of file fbxnurbs.h.

    {
        ePeriodic,
        eClosed,
        eOpen
    };

enum EErrorCode

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Enumerator:

eNurbsTypeUnknown	Search for all occurrences
eWrongNumberOfControlPoint	Search for all occurrences
eWeightTooSmall	Search for all occurrences
eUMultiplicityVectorError	Search for all occurrences
eVMultiplicityVectorError	Search for all occurrences
eUKnotVectorError	Search for all occurrences
eVKnotVectorError	Search for all occurrences
eErrorCount	Search for all occurrences

Definition at line 219 of file fbxnurbs.h.

    {
        eNurbsTypeUnknown,
        eWrongNumberOfControlPoint,
        eWeightTooSmall,
        eUMultiplicityVectorError,
        eVMultiplicityVectorError,
        eUKnotVectorError,
        eVKnotVectorError,
        eErrorCount
    };

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Member Function Documentation

virtual FbxNodeAttribute::EType GetAttributeType

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)

const [virtual]

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Returns the FbxNodeAttribute::EType::eNurbs node attribute type.

Reimplemented from FbxGeometry.

void Reset

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Resets the NURBS surface its default values.

void SetSurfaceMode

(

FbxGeometry::ESurfaceMode

pMode

)

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Sets the surface mode.

Parameters:

pMode

Surface mode identifier (see class FbxGeometry)

ESurfaceMode GetSurfaceMode

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)

const [inline]

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Returns the surface mode.

Returns:

The surface mode identifier that is currently set.

Definition at line 55 of file fbxnurbs.h.

{return mSurfaceMode;}

void InitControlPoints	(	int	pUCount,
		EType	pUType,
		int	pVCount,
		EType	pVType
	)

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Allocates memory space for an array of control points as well as knot and multiplicity vectors.

Parameters:

pUCount	Number of U-dimension control points.
pUType	U-dimension NURBS type.
pVCount	Number of V-dimension control points.
pVType	V-dimension NURBS type.

Remarks:

Always call this function after FbxNurbs::SetOrder().

int GetUCount

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)

const [inline]

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Returns the number of U-dimension control points.

Returns:

Number of U-dimension control points.

Definition at line 82 of file fbxnurbs.h.

{return mUCount;}

int GetVCount

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)

const [inline]

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Returns the number of V-dimension control points.

Returns:

Number of V-dimension control points.

Definition at line 87 of file fbxnurbs.h.

{return mVCount;}

EType GetNurbsUType

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)

const [inline]

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Returns the U-dimension NURBS type.

Returns:

NURBS type identifier.

Definition at line 92 of file fbxnurbs.h.

{return mUType;}

EType GetNurbsVType

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)

const [inline]

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Returns the V-dimension NURBS type.

Returns:

NURBS type identifier.

Definition at line 97 of file fbxnurbs.h.

{return mVType;}

int GetUKnotCount

(

)

const

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Returns the number of elements in the U-dimension knot vector.

See FbxNurbsCurve for more information.

Returns:

The number of elements in the U-dimension knot vector.

double* GetUKnotVector

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)

const

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Returns the U-dimension knot vector.

Returns:

Pointer to the U-dimension knot vector.

int GetVKnotCount

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)

const

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Returns the number of elements in the V-dimension knot vector.

See FbxNurbsCurve for more information.

Returns:

The number of elements in the V-dimension knot vector.

double* GetVKnotVector

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const

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Returns the V-dimension knot vector.

Returns:

Pointer to the V-dimension knot vector.

int* GetUMultiplicityVector

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)

const

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Returns multiplicity of U-dimension control points.

Returns:

Pointer to the array of multiplicity values.

Remarks:

The length of this vector is equal to the U count. Its elements are set to 1 by default.

int* GetVMultiplicityVector

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)

const

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Returns multiplicity of V-dimension control points.

Returns:

Pointer to the array of multiplicity values.

Remarks:

The length of this vector is equal to the V count. Its elements are set to 1 by default.

void SetOrder	(	FbxUInt	pUOrder,
		FbxUInt	pVOrder
	)

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Sets the order of the NURBS surface.

Parameters:

pUOrder	NURBS order in U dimension.
pVOrder	NURBS order in V dimension.

int GetUOrder

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const [inline]

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Returns the NURBS order in U dimension.

Returns:

NURBS order in U dimension.

Definition at line 142 of file fbxnurbs.h.

{return mUOrder;}

int GetVOrder

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const [inline]

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Returns the NURBS order in V dimension.

Returns:

NURBS order in V dimension.

Definition at line 147 of file fbxnurbs.h.

{return mVOrder;}

void SetStep	(	int	pUStep,
		int	pVStep
	)

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Sets the NURBS step.

The step value is the number of divisions between adjacent control points.

Parameters:

pUStep	Steps in U dimension.
pVStep	Steps in V dimension.

int GetUStep

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)

const [inline]

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Returns the number of divisions between adjacent control points in U dimension.

Returns:

Steps in U dimension.

Definition at line 159 of file fbxnurbs.h.

{return mUStep;}

int GetVStep

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)

const [inline]

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Returns the number of divisions between adjacent control points in V dimension.

Returns:

Steps in V dimension.

Definition at line 164 of file fbxnurbs.h.

{return mVStep;}

int GetUSpanCount

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)

const

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Calculates the number of surface spans in the U dimension.

See FbxNurbsCurve::GetSpanCount() for more information.

Returns:

The number of spans in the U dimension if the surface has been initialized. If the spans have not been initialized, returns -1.

int GetVSpanCount

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)

const

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Calculates the number of surface spans in the V dimension.

See FbxNurbsCurve::GetSpanCount() for more information.

Returns:

The number of spans in the V dimension if the surface has been initialized. If the spans have not been initialized, returns -1.

void SetApplyFlipUV

(

bool

pFlag

)

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Sets the flag that induces UV flipping at export.

Parameters:

pFlag

If true, UV flipping occurs.

bool GetApplyFlipUV

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)

const

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Returns the flag that induces UV flipping at export.

Returns:

The current state of the UV flip flag.

void SetApplyFlipLinks

(

bool

pFlag

)

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Sets the flag that induces link flipping at export.

Parameters:

pFlag

If true, the links control points indices are flipped.

bool GetApplyFlipLinks

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const

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Returns the flag that induces link flipping at export.

Returns:

The current state of the link flip flag.

bool GetApplyFlip

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)

const [inline]

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Returns flip flags state.

Returns:

True if we need to flip either the UV or the links.

Definition at line 210 of file fbxnurbs.h.

{ return GetApplyFlipUV() || GetApplyFlipLinks(); }

virtual FbxObject& Copy

(

const FbxObject &

pObject

)

[virtual]

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Copy an object content into this object.

Parameters:

pObject

The source object to copy data from.

Returns:

Returns the destination object being modified by the source.

Remarks:

This function replace the assignment operator (operator=). It will copy all property values and the name. Connections are NOT copied.

Reimplemented from FbxGeometry.

virtual void Construct

(

const FbxNurbs *

pFrom

)

[protected, virtual]

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virtual void Destruct

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bool

pRecursive

)

[protected, virtual]

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Optional destructor override, automatically called by default destructor.

Parameters:

pRecursive

If true, children objects should be destroyed as well.

Remarks:

In case it is decided to override this function, do not forget to call ParentClass::Destruct(pResursive) at the end.

Reimplemented from FbxGeometry.

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Friends And Related Function Documentation

friend class FbxGeometryConverter [friend]

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Definition at line 254 of file fbxnurbs.h.

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Member Data Documentation

FbxUInt mUOrder [protected]

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Definition at line 237 of file fbxnurbs.h.

FbxUInt mVOrder [protected]

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Definition at line 237 of file fbxnurbs.h.

int mUCount [protected]

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Definition at line 238 of file fbxnurbs.h.

int mVCount [protected]

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Definition at line 238 of file fbxnurbs.h.

int mUStep [protected]

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Definition at line 239 of file fbxnurbs.h.

int mVStep [protected]

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Definition at line 239 of file fbxnurbs.h.

EType mUType [protected]

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Definition at line 240 of file fbxnurbs.h.

EType mVType [protected]

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Definition at line 240 of file fbxnurbs.h.

double* mUKnotVector [protected]

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Definition at line 242 of file fbxnurbs.h.

double* mVKnotVector [protected]

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Definition at line 243 of file fbxnurbs.h.

int* mUMultiplicityVector [protected]

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Definition at line 245 of file fbxnurbs.h.

int* mVMultiplicityVector [protected]

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Definition at line 246 of file fbxnurbs.h.

ESurfaceMode mSurfaceMode [protected]

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Definition at line 248 of file fbxnurbs.h.

bool mApplyFlipUV [protected]

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Definition at line 251 of file fbxnurbs.h.

bool mApplyFlipLinks [protected]

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Definition at line 252 of file fbxnurbs.h.

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The documentation for this class was generated from the following file:

• fbxsdk/scene/geometry/fbxnurbs.h