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SoNurbsCurve(3IV)()					   SoNurbsCurve(3IV)()

NAME
       SoNurbsCurve -- NURBS curve shape node

INHERITS FROM
       SoBase >	SoFieldContainer > SoNode > SoShape > SoNurbsCurve

SYNOPSIS
       #include	<Inventor/nodes/SoNurbsCurve.h>

	  Fields from class SoNurbsCurve:

     SoSFInt32		 numControlPoints
     SoMFFloat		 knotVector

	  Methods from class SoNurbsCurve:

			 SoNurbsCurve()
     static SoType	 getClassTypeId()

	  Methods from class SoNode:

     void		 setOverride(SbBool state)
     SbBool		 isOverride() const
     SoNode *		 copy(SbBool copyConnections = FALSE) const
     virtual SbBool	 affectsState()	const
     static SoNode *	 getByName(const SbName	&name)
     static int		 getByName(const SbName	&name, SoNodeList &list)

	  Methods from class SoFieldContainer:

     void		 setToDefaults()
     SbBool		 hasDefaultValues() const
     SbBool		 fieldsAreEqual(const SoFieldContainer *fc) const
     void		 copyFieldValues(const	SoFieldContainer  *fc,	SbBool
			      copyConnections =	FALSE)
     SbBool		 set(const char	*fieldDataString)
     void		 get(SbString &fieldDataString)
     virtual int	 getFields(SoFieldList &resultList) const
     virtual SoField *	 getField(const	SbName &fieldName) const
     SbBool		 getFieldName(const SoField *field, SbName &fieldName)
			      const
     SbBool		 isNotifyEnabled() const
     SbBool		 enableNotify(SbBool flag)

	  Methods from class SoBase:

     void		 ref()
     void		 unref() const
     void		 unrefNoDelete() const
     void		 touch()
     virtual SoType	 getTypeId() const
     SbBool		 isOfType(SoType type) const
     virtual void	 setName(const SbName &name)
     virtual SbName	 getName() const

DESCRIPTION
       This  class  represents a NURBS curve, based on the knot	vector and the
       control points that you	specify.  The  knotVector  field  specifies  a
       floating-point  array  of values; the values are	the coordinates	of the
       knot points in the curve, and you must enter them in non-decreasing or-
       der.  The  curve	will use the first numControlPoints values in the cur-
       rent coordinates	as control points.

       If you specify n	knots, you can specify up to n-8 control points.   The
       number  of knots	minus the number of control points is known as the or-
       der of the curve. A NURBS curve can have	an order of up to 8.

       The control points of the curve are transformed by the  current	trans-
       formation  matrix.  The	curve is drawn with the	current	lighting model
       and drawing style (drawing style	FILLED is treated as LINES). The coor-
       dinates,	 normals,  and texture coordinates of a	NURBS curve are	gener-
       ated, so	you cannot bind	explicit normals or texture coordinates	 to  a
       NURBS curve.

       The approximation of the	curve by line segments is affected by the cur-
       rent complexity value.

FIELDS
     SoSFInt32		 numControlPoints
	  Number of control points.

     SoMFFloat		 knotVector
	  The knot vector.

METHODS
			 SoNurbsCurve()
	  Creates a NURBS curve	node with default settings.

     static SoType	 getClassTypeId()
	  Returns type identifier for this class.

ACTION BEHAVIOR
       SoGLRenderAction
	  Draws	the curve based	on the current coordinates, material,  and  so
	  on.

     SoRayPickAction
	  Picks	the curve based	on the current coordinates and transformation.

     SoGetBoundingBoxAction
	  Computes  the	 bounding  box that encloses all control points	of the
	  curve	with the current transformation	applied	to them. Sets the cen-
	  ter to the average of	the control points.

     SoCallbackAction
	  If  any  line	segment	callbacks are registered with the action, they
	  will be invoked for each successive segment approximating the	curve.

FILE FORMAT/DEFAULTS
       NurbsCurve {
	  numControlPoints  0
	  knotVector	    0
     }

SEE ALSO
       SoIndexedNurbsCurve, SoNurbsSurface

							   SoNurbsCurve(3IV)()

NAME | INHERITS FROM | SYNOPSIS | DESCRIPTION | FIELDS | METHODS | ACTION BEHAVIOR | FILE FORMAT/DEFAULTS | SEE ALSO

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