man SoIndexedNurbsCurve () - indexed NURBS curve shape node


SoIndexedNurbsCurve - indexed NURBS curve shape node


SoBase > SoFieldContainer > SoNode > SoShape > SoIndexedNurbsCurve


#include <Inventor/nodes/SoIndexedNurbsCurve.h> Fields from class SoIndexedNurbsCurve: c } c } numControlPoints

c } c } coordIndex

c } c } knotVector Methods from class SoIndexedNurbsCurve: c } c } SoIndexedNurbsCurve()

c } c } getClassTypeId() Methods from class SoNode: c } c } setOverride(SbBool state)

c } c } isOverride() const

c } c } copy(SbBool copyConnections = FALSE) const

c } c } affectsState() const

c } c } getByName(const SbName &name)

c } c } getByName(const SbName &name, SoNodeList &list) Methods from class SoFieldContainer: c } c } setToDefaults()

c } c } hasDefaultValues() const

c } c } fieldsAreEqual(const SoFieldContainer *fc) const

c } c } copyFieldValues(const SoFieldContainer *fc, SbBool copyConnections = FALSE)

c } c } set(const char *fieldDataString)

c } c } get(SbString &fieldDataString)

c } c } getFields(SoFieldList &resultList) const

c } c } getField(const SbName &fieldName) const

c } c } getFieldName(const SoField *field, SbName &fieldName) const

c } c } isNotifyEnabled() const

c } c } enableNotify(SbBool flag) Methods from class SoBase: c } c } ref()

c } c } unref() const

c } c } unrefNoDelete() const

c } c } touch()

c } c } getTypeId() const

c } c } isOfType(SoType type) const

c } c } setName(const SbName &name)

c } c } getName() const


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.


c } c } numControlPoints

Number of control points for the curve. c } c } coordIndex

Coordinate indices for the control points. c } c } knotVector

The knot vector for the curve. Values must be in non-decreasing order.


c } c } SoIndexedNurbsCurve()

Creates an indexed NURBS curve node with default settings. c } c } getClassTypeId()

Returns type identifier for this class.



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.


IndexedNurbsCurve {
numControlPoints	0
coordIndex	0
knotVector	0


SoNurbsCurve, SoIndexedNurbsSurface