NAME

       SoTrackballManip -

       The SoTrackballManip wraps an SoTrackballDragger for convenience.

SYNOPSIS

       #include <Inventor/manips/SoTrackballManip.h>

       Inherits SoTransformManip.

   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.
       SoTrackballManip (void)

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

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

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

   Additional Inherited Members

Detailed Description

       The SoTrackballManip wraps an SoTrackballDragger for convenience.

       The manipulator class takes care of wrapping up the SoTrackballDragger in a simple and
       convenient API for the application programmer, making it automatically surround the
       geometry it influences and taking care of the book-keeping routines for it's interaction
       with the relevant fields of an SoTransformation node.

       Here's a dead simple, stand-alone example on how to set up an SoTrackballManip in a
       scenegraph:

       #include <Inventor/Qt/SoQt.h>
       #include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
       #include <Inventor/nodes/SoCone.h>
       #include <Inventor/nodes/SoSeparator.h>
       #include <Inventor/manips/SoTrackballManip.h>

       int
       main(int argc, char* argv[])
       {
         QWidget * mainwin = SoQt::init(argv[0]);

         SoSeparator * root = new SoSeparator;
         root->ref();

         SoTrackballManip * manip = new SoTrackballManip;
         root->addChild(manip);

         root->addChild(new SoCone);

         SoQtExaminerViewer * viewer = new SoQtExaminerViewer(mainwin);
         viewer->setSceneGraph(root);

         SoQt::show(mainwin);
         SoQt::mainLoop();

         root->unref();

         return 0;
       }

       Compile and hit 'ESC' to go into scenegraph interaction mode in the examinerviewer, then
       change the rotation of the cone by interacting with the dragger bands.

Constructor & Destructor Documentation

   SoTrackballManip::SoTrackballManip (void)
       Default constructor. Allocates an SoTrackballDragger and an SoSurroundScale node to
       surround the geometry within our part of the scenegraph.

   SoTrackballManip::~SoTrackballManip (void) [protected],  [virtual]
       Destructor.

Member Function Documentation

   SoType SoTrackballManip::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 SoTransformManip.

   const SoFieldData * SoTrackballManip::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 SoTransformManip.

Author

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