SoIndexedNurbsCurve(3IV)NAMESoIndexedNurbsCurve (SoIndCurve) - indexed NURBS curve shape node
INHERITS FROM
SoBase > SoFieldContainer > SoNode > SoShape > SoIndexedNurbsCurveSYNOPSIS
#include <Inventor_c/nodes/SoIndexedNurbsCurve.h>
typedef SoIndexedNurbsCurve SoIndCurve
Fields from class SoIndexedNurbsCurve:
SoSFInt32 numControlPoints
SoMFInt32 coordIndex
SoMFFloat knotVector
Functions from class SoIndexedNurbsCurve:
SoIndexedNurbsCurve * SoIndCurveCreate()
SoType SoIndCurveGetClassTypeId()
Functions from class SoNode:
void SoIndCurveSetOverride(SoIndCurve *this, SbBool state)
SbBool SoIndCurveIsOverride(const SoIndCurve *this)
SoNode * SoIndCurveCopy(const SoIndCurve *this, SbBool
copyConnections = FALSE)
SbBool SoIndCurveAffectsState(const SoIndCurve *this)
SoNode * SoIndCurveGetByName(const char *name)
int SoIndCurveGetByNameList(const char *name, SoNodeList
*list)
Functions from class SoFieldContainer:
void SoIndCurveSetToDflts(SoIndCurve *this)
SbBool SoIndCurveHasDfltVals(const SoIndCurve *this)
SbBool SoIndCurveFldsAreEq(const SoIndCurve *this, const
SoFieldContainer *fc)
void SoIndCurveCopyFieldVals(SoIndCurve *this, const
SoFieldContainer *fc, SbBool copyConnections =
FALSE)
SbBool SoIndCurveSet(SoIndCurve *this, const char
*fieldDataString)
void SoIndCurveGet(SoIndCurve *this, SbString
*fieldDataString)
int SoIndCurveGetFields(const SoIndCurve *this,
SoFieldList *resultList)
SoField * SoIndCurveGetField(const SoIndCurve *this, const char
*fieldName)
SbBool SoIndCurveGetFieldName(const SoIndCurve *this, const
SoField *field, SbName *fieldName)
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SbBool SoIndCurveIsNotifyEnabled(const SoIndCurve *this)
SbBool SoIndCurveEnableNotify(SoIndCurve *this, SbBool flag)
Functions from class SoBase:
void SoIndCurveRef(SoIndCurve *this)
void SoIndCurveUnref(const SoIndCurve *this)
void SoIndCurveUnrefNoDelete(const SoIndCurve *this)
void SoIndCurveTouch(SoIndCurve *this)
SoType SoIndCurveGetTypeId(const SoIndCurve *this)
SbBool SoIndCurveIsOfType(const SoIndCurve *this, SoType
type)
void SoIndCurveSetName(SoIndCurve *this, const char *name)
SbName SoIndCurveGetName(const SoIndCurve *this)
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
order. The numControlPoints field specifies the number of control points
the curve will have and will use the current coordinates that are indexed
from the coordIndex field.
You can get a curve of minimum order (2) by specifying two more knots
than control points and having at least two control points. This curve
would be a set of line segments connecting the control points together.
You can get a curve of maximum order (8) by specifying 8 more knots than
control points and having at least 8 control points. In this curve, each
control point would have influence on a larger portion of the curve than
with curves of lesser order.
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 FILLED is treated as LINES). 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.
The approximation of the curve by line segments is affected by the
current complexity value.
FIELDS
SoSFInt32 numControlPoints
Number of control points for the curve.
SoMFInt32 coordIndex
Coordinate indices for the control points.
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SoMFFloat knotVector
The knot vector for the curve. Values must be in non-decreasing
order.
FUNCTIONSSoIndexedNurbsCurve * SoIndCurveCreate()
Creates an indexed NURBS curve node with default settings.
SoType SoIndCurveGetClassTypeId()
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
center 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
IndexedNurbsCurve {
numControlPoints 0
coordIndex 0
knotVector 0
}
SEE ALSO
SoNurbsCurve, SoIndexedNurbsSurface
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