SoDirectionalLightDragger.h

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/*=======================================================================
** Author      : Paul Isaacs (MMM yyyy)
** Modified by : David Mott (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
 
#ifndef  _SO_DIRECTIONAL_LIGHT_DRAGGER_
#define  _SO_DIRECTIONAL_LIGHT_DRAGGER_
 
#include <Inventor/SbLinear.h>
#include <Inventor/draggers/SoDragger.h>
#include <Inventor/fields/SoSFVec3f.h>
#include <Inventor/fields/SoSFRotation.h>
#include <Inventor/sensors/SoSensor.h>
 
class SoFieldSensor;
 
//
//  Class: SoDirectionalLightDragger
//
//  This changes the direction of directional lights.
//
 
class  SoDirectionalLightDragger : public SoDragger {
 
  SO_KIT_HEADER(SoDirectionalLightDragger);
 
  // This gives the dragger an overall material.  It is edited by lightManips
  // to make its dragger match the color of the light.  Any materials within 
  // other parts will override this one. 
  SO_KIT_CATALOG_ENTRY_HEADER(material);
 
  // The translator is kept under a separator along with a
  // rotation that is maintained as the inverse to the rotation of the
  // light. This means that using the rotator does not rotate the
  // coordinate system that we translate the base of the dragger in.
  SO_KIT_CATALOG_ENTRY_HEADER(translatorSep);
  SO_KIT_CATALOG_ENTRY_HEADER(translatorRotInv);
  SO_KIT_CATALOG_ENTRY_HEADER(translator);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator);
 
 public:
  SoDirectionalLightDragger();
 
  SoSFRotation rotation;
  SoSFVec3f    translation;
 
 private:
  static void         initClass();    // initialize the class
  static void         exitClass();
 
 private:
 
  SoFieldSensor *translFieldSensor;
  SoFieldSensor *rotFieldSensor;
  static void   fieldSensorCB( void *, SoSensor * );
  static void valueChangedCB( void *, SoDragger * );
 
  // detach/attach any sensors, callbacks, and/or field connections.
  // Also set geometry of childDraggers to be our default instead of their
  // regular default, using our resources.
  // Called by:            start/end of SoBaseKit::readInstance
  // and on new copy by:   start/end of SoBaseKit::copy.
  // Classes that redefine must call setUpConnections(TRUE,TRUE) 
  // at end of constructor.
  // Returns the state of the node when this was called.
  virtual SbBool setUpConnections( SbBool onOff, SbBool doItAlways = FALSE );
 
  virtual void setDefaultOnNonWritingFields();
 
  ~SoDirectionalLightDragger();
 
 private:
  static const char geomBuffer[];
};
 
#endif /* _SO_DIRECTIONAL_LIGHT_DRAGGER_ */