SoIndexedNurbsCurve(3IV)
SoIndexedNurbsCurve - indexed NURBS curve shape node
As shipped in IRIX 6.5.22. Added in IRIX 6.5.22.
NAME SoIndexedNurbsCurve - indexed NURBS curve shape node INHERITS FROM SoBase > SoFieldContainer > SoNode > SoShape > SoIndexedNurbsCurve SYNOPSIS #include <Inventor/nodes/SoIndexedNurbsCurve.h> Fields from class SoIndexedNurbsCurve: SoSFInt32 numControlPoints SoMFInt32 coordIndex SoMFFloat knotVector Methods from class SoIndexedNurbsCurve: SoIndexedNurbsCurve() 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 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. SoMFFloat knotVector The knot vector for the curve. Values must be in non-decreasing order. METHODS SoIndexedNurbsCurve() Creates an indexed 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 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