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       SoIndexedNurbsSurface — indexed NURBS surface shape node


       SoBase > SoFieldContainer > SoNode > SoShape > SoIndexedNurbsSurface


       #include <Inventor/nodes/SoIndexedNurbsSurface.h>

          Fields from class SoIndexedNurbsSurface:

     SoSFInt32           numUControlPoints
     SoSFInt32           numVControlPoints
     SoMFInt32           coordIndex
     SoMFFloat           uKnotVector
     SoMFFloat           vKnotVector
     SoSFInt32           numSControlPoints
     SoSFInt32           numTControlPoints
     SoMFInt32           textureCoordIndex
     SoMFFloat           sKnotVector
     SoMFFloat           tKnotVector

          Methods from class SoIndexedNurbsSurface:

     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 =
     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


       This shape node represents a NURBS surface based on  the  knot  vectors  and  the  control
       points  that  you  specify.  The uKnotVector and vKnotVector fields specify floating-point
       arrays of values; the values are the coordinates of the knot points in  the  surface,  and
       you  must  enter them in non-decreasing order. The numUControlPoints and numVControlPoints
       fields specify the number of control  points  the  surface  will  have  in  the  U  and  V
       parametric  directions,  and  will  use  the current coordinates that are indexed from the
       coordIndex field.

       You can get a surface of minimum order (2) in the U or V directions by specifying two more
       knots than control points in that direction and having at least two control points in that
       direction. This surface would appear creased in one direction.

       You can get a surface of maximum order (8) in the U or V directions  by  specifying  eight
       more  knots than control points in that direction and having at least eight control points
       in that direction.

       The control points of  the  NURBS  surface  are  transformed  by  the  current  cumulative
       transformation.   The surface is drawn with the current light model and drawing style. The
       coordinates, normals, and texture coordinates of a surface are generated,  so  you  cannot
       bind explicit normals or texture coordinates to a NURBS surface. The first material in the
       state is applied to the entire surface.

       The surface is trimmed according to the currently defined profiles curves.

       When default texture coordinates are applied to a NURBS surface, the edges of the  texture
       square  are stretched to fit the surface. The axes of the texture are called S and T; S is
       horizontal and T is vertical. The axes of the NURBS surface are  called  U  and  V;  U  is
       horizontal  and V is vertical. You can also define texture coordinates explicitly with the
       S,T location point, the knot vectors, and the current texture coordinates.


     SoSFInt32           numUControlPoints
     SoSFInt32           numVControlPoints
          Number of control points in the U and V directions.

     SoMFInt32           coordIndex
          Coordinate indices.

     SoMFFloat           uKnotVector
     SoMFFloat           vKnotVector
          The knot vectors in the U and V directions.

     SoSFInt32           numSControlPoints
     SoSFInt32           numTControlPoints
          Number of control points in the S and T directions.

     SoMFInt32           textureCoordIndex
          Texture coordinate indices.

     SoMFFloat           sKnotVector
     SoMFFloat           tKnotVector
          The knot vectors in the S and T directions.


          Creates an indexed NURBS surface node with default settings.

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


          Draws the surface based on the current coordinates, material, and so on.

          Picks the surface based on the current coordinates and transformation.

          Computes the bounding box that encloses all control points  of  the  surface  with  the
          current  transformation  applied to them. Sets the center to the average of the control

          If any triangle callbacks are registered with the action, they will be invoked for each
          successive triangle approximating the surface.


       IndexedNurbsSurface {
          numUControlPoints  0
          numVControlPoints  0
          numSControlPoints  0
          numTControlPoints  0
          coordIndex         0
          uKnotVector        0
          vKnotVector        0
          sKnotVector        0
          tKnotVector        0
          textureCoordIndex  -1


       SoIndexedNurbsCurve, SoNurbsSurface, SoProfile