NAME

       SoVRMLPositionInterpolator -

       The SoVRMLPositionInterpolator class is used to interpolate 3D points.

       The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC
       14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the
       Consortium:

SYNOPSIS

       #include <Inventor/VRMLnodes/SoVRMLPositionInterpolator.h>

       Inherits SoVRMLInterpolator.

   Public Member Functions
       virtual SoType getTypeId (void) const
           Returns the type identification of an object derived from a class inheriting SoBase.
           This is used for run-time type checking and 'downward' casting.
       virtual const SoEngineOutputData * getOutputData (void) const
       SoVRMLPositionInterpolator (void)

   Static Public Member Functions
       static SoType getClassTypeId (void)
       static void * createInstance (void)
       static void initClass (void)

   Public Attributes
       SoMFVec3f keyValue
       SoEngineOutput value_changed

   Protected Member Functions
       virtual const SoFieldData * getFieldData (void) const
       virtual ~SoVRMLPositionInterpolator ()

   Static Protected Member Functions
       static const SoFieldData ** getFieldDataPtr (void)
       static const SoEngineOutputData ** getOutputDataPtr (void)

   Additional Inherited Members

Detailed Description

       The SoVRMLPositionInterpolator class is used to interpolate 3D points.

       The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC
       14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the
       Consortium:

       PositionInterpolator {
         eventIn      SFFloat set_fraction        # (-,)
         exposedField MFFloat key           []    # (-,)
         exposedField MFVec3f keyValue      []    # (-,)
         eventOut     SFVec3f value_changed
       }

       The PositionInterpolator node linearly interpolates among a list of 3D vectors. The
       keyValue field shall contain exactly as many values as in the key field. 4.6.8,
       Interpolator nodes (http://www.web3d.org/x3d/specifications/vrml/ISO-
       IEC-14772-VRML97/part1/concepts.html#4.6.8), contains a more detailed discussion of
       interpolators.

Constructor & Destructor Documentation

   SoVRMLPositionInterpolator::SoVRMLPositionInterpolator (void)
       Constructor.

   SoVRMLPositionInterpolator::~SoVRMLPositionInterpolator () [protected],  [virtual]
       Destructor.

Member Function Documentation

   SoType SoVRMLPositionInterpolator::getTypeId (void) const [virtual]
       Returns the type identification of an object derived from a class inheriting SoBase. This
       is used for run-time type checking and 'downward' casting. Usage example:

       void foo(SoNode * node)
       {
         if (node->getTypeId() == SoFile::getClassTypeId()) {
           SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
         }
       }

       For application programmers wanting to extend the library with new nodes, engines,
       nodekits, draggers or others: this method needs to be overridden in all subclasses. This
       is typically done as part of setting up the full type system for extension classes, which
       is usually accomplished by using the pre-defined macros available through for instance
       Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes),
       Inventor/engines/SoSubEngine.h (for engine classes) and so on.

       For more information on writing Coin extensions, see the class documentation of the
       toplevel superclasses for the various class groups.

       Reimplemented from SoVRMLInterpolator.

   const SoFieldData * SoVRMLPositionInterpolator::getFieldData (void) const [protected],
       [virtual]
       Returns a pointer to the class-wide field data storage object for this instance. If no
       fields are present, returns NULL.

       Reimplemented from SoVRMLInterpolator.

   const SoEngineOutputData * SoVRMLPositionInterpolator::getOutputData (void) const [virtual]
       This API member is considered internal to the library, as it is not likely to be of
       interest to the application programmer.

       Reimplemented from SoVRMLInterpolator.

Member Data Documentation

   SoMFVec3f SoVRMLPositionInterpolator::keyValue
       The keyValue vector.

   SoEngineOutput SoVRMLPositionInterpolator::value_changed
       The eventOut which is sent every time the interpolator has calculated a new value.

Author

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