'\"! tbl | mmdoc
'\"macro stdmacro
.ie n \{\
.   ds Cr \fB
.   ds Cb \fB
.\}
.el \{\
.   ds Cr \f7
.   ds Cb \f8
.\}
.TH SoNurbsCurve(3IV)
.SH NAME
SoNurbsCurve \(em NURBS curve shape node 
.SH INHERITS FROM
SoBase > SoFieldContainer > SoNode > SoShape > SoNurbsCurve
.SH SYNOPSIS
.ps -1
\*(Cr#include <Inventor/nodes/SoNurbsCurve.h>
.sp
.in 1i
\f1Fields from class SoNurbsCurve:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSoSFInt32
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbnumControlPoints
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSoMFFloat
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbknotVector
.sp
.in 1i
\f1Methods from class SoNurbsCurve:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Cr
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbSoNurbsCurve\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic SoType
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetClassTypeId\*(Cr()
.sp
.in 1i
\f1Methods from class SoNode:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetOverride\*(Cr(SbBool state)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbisOverride\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSoNode *
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbcopy\*(Cr(SbBool copyConnections = FALSE) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbaffectsState\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic SoNode *
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetByName\*(Cr(const SbName &name)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic int
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetByName\*(Cr(const SbName &name, SoNodeList &list)
.sp
.in 1i
\f1Methods from class SoFieldContainer:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetToDefaults\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbhasDefaultValues\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbfieldsAreEqual\*(Cr(const SoFieldContainer *fc) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbcopyFieldValues\*(Cr(const SoFieldContainer *fc, SbBool copyConnections = FALSE)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbset\*(Cr(const char *fieldDataString)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbget\*(Cr(SbString &fieldDataString)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual int
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetFields\*(Cr(SoFieldList &resultList) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SoField *
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetField\*(Cr(const SbName &fieldName) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetFieldName\*(Cr(const SoField *field, SbName &fieldName) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbisNotifyEnabled\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbenableNotify\*(Cr(SbBool flag)
.sp
.in 1i
\f1Methods from class SoBase:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbref\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbunref\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbunrefNoDelete\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbtouch\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SoType
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetTypeId\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbisOfType\*(Cr(SoType type) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual void
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetName\*(Cr(const SbName &name)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SbName
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetName\*(Cr() const
.sp
.SH DESCRIPTION
This class represents a NURBS curve, based on the knot vector and the control points that you specify. The \*(CbknotVector\f1 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 order. The curve will use the first \*(CbnumControlPoints\f1 values in the current coordinates as control points. 
.sp
If you specify \f2n\f1 knots, you can specify up to \f2n-8\f1 control points.
\&The number of knots minus the number of control points is known as the order of the curve. A NURBS curve can have an order of up to 8. 
.sp
The control points of the curve are transformed by the current transformation
\&matrix. The curve is drawn with the current lighting model and drawing style (drawing style \*(CrFILLED\f1 is treated as \*(CrLINES\f1). The coordinates, normals, and texture coordinates of a NURBS curve are generated, so you cannot
\&bind explicit normals or texture coordinates to a NURBS curve. 
.sp
The approximation of the curve by line segments is affected by the current complexity value. 
.SH FIELDS
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSoSFInt32
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbnumControlPoints
.br
.in 1i
\f1Number of control points. 
.sp
.in 0.5i
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSoMFFloat
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbknotVector
.br
.in 1i
\f1The knot vector. 
.sp
.in 0.5i
.SH METHODS
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Cr
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbSoNurbsCurve\*(Cr()
.br
.in 1i
\f1Creates a NURBS curve node with default settings. 
.sp
.in 0.5i
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic SoType
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetClassTypeId\*(Cr()
.br
.in 1i
\f1Returns type identifier for this class. 
.sp
.in 0.5i
.SH ACTION BEHAVIOR
\*(CbSoGLRenderAction
.br
.in 1i
\f1Draws the curve based on the current coordinates, material, and so on. 
.sp
.in 0.5i
\*(CbSoRayPickAction
.br
.in 1i
\f1Picks the curve based on the current coordinates and transformation. 
.sp
.in 0.5i
\*(CbSoGetBoundingBoxAction
.br
.in 1i
\f1Computes the bounding box that encloses all control points of the curve with the current transformation applied to them. Sets the center to the average of the control points. 
.sp
.in 0.5i
\*(CbSoCallbackAction
.br
.in 1i
\f1If any line segment callbacks are registered with the action, they will be invoked for each successive segment approximating the curve. 
.sp
.in 0.5i
.SH FILE FORMAT/DEFAULTS
.nf
\*(CrNurbsCurve {
.in 1i
.ta 18m
numControlPoints	0
knotVector	0
.in 0.5i
}
.SH SEE ALSO
\*(CbSoIndexedNurbsCurve, SoNurbsSurface