SoTrd.h

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//
// $Id$
//
/*-----------------------------Hepvis----------------------------------------*/
/*                                                                           */
/* Node:             SoTrd                                                   */
/* Description:      Represents the G4Trd Geant Geometry entity              */
/* Author:           Joe Boudreau Nov 11 1996                                */
/*                                                                           */
/*---------------------------------------------------------------------------*/
#ifndef HEPVis_SoTrd_h
#define HEPVis_SoTrd_h
 
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/fields/SoSFNode.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/nodes/SoShape.h>
 
class SoSFNode;
 
//! SoTrd - Inventor version of the G4Trd Geant Geometry entity
/*!
 * Node:            SoTrd
 * 
 * Description:     Inventor version of the G4Trd Geant Geometry entity
 * 
 * Author:      Joe Boudreau Nov 11 1996
 * 
 * A Trd is a trapezoid with the x and y dimensions varying along z
 *
 * Always use Inventor Fields. This allows Inventor to detect a change to
 * the data field and take the appropriate action; e.g., redraw the scene.
 *
 */
 
#define SoTrd Geant4_SoTrd
 
class SoTrd:public SoShape {
 
  //
  //! This is required
  //
  SO_NODE_HEADER(SoTrd);
 
public:
 
  //
  //! half-length of x, at -fDz
  //
  SoSFFloat fDx1;                  
 
  //
  //! half-length of x, at +fDz
  //
  SoSFFloat fDx2;
 
  //
  //! half-length of y, at -fDz
  //
  SoSFFloat fDy1;
 
  //
  //! half-length of y, at +fDz
  //
  SoSFFloat fDy2;
 
  //
  //! half-length along Z
  //
  SoSFFloat fDz;
 
  //
  //! Alternate rep - required
  //
  SoSFNode  alternateRep;
 
  //
  //! Constructor, required
  //
  SoTrd();
 
  //
  //! Class Initializer, required
  //
  static void initClass();
 
  //
  //! Generate AlternateRep, required.  Generating an alternate representation
  //! must be done upon users request.  It allows an Inventor program to read
  //! back the file without requiring *this* code to be dynamically linked. 
  //! If the users expects that *this* code will be dynamically linked, he
  //! need not invoke this method.  
  //
  virtual void generateAlternateRep();
 
  //
  //! We better be able to clear it, too!
  //
  virtual void clearAlternateRep();
 
protected:
 
  //
  //! compute bounding Box, required
  //
  virtual void computeBBox(SoAction *action, SbBox3f &box, SbVec3f &center );
 
  //
  //! Generate Primitives, required
  //
  virtual void generatePrimitives(SoAction *action);
 
  //
  //! GetChildList, required whenever the class has hidden children
  //
  virtual SoChildList *getChildren() const;
 
 
protected:
 
  //
  //! Destructor, required
  //
  virtual ~SoTrd();
 
private: 
 
  //
  //! Generate Children. Used to create the hidden children. Required whenever
  //! the node has hidden children.  
  //
  void generateChildren();  
 
  //
  //! Used to modify hidden children when a data field is changed. Required 
  //! whenever the class has hidden children. 
  //
  void updateChildren();
 
  //
  //! ChildList. Required whenever the class has hidden children.  
  //
  SoChildList *children;
};
 
#endif