SoDragPointDragger.h

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/*=======================================================================
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 * ALL RIGHTS RESERVED
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**=======================================================================*/
/*=======================================================================
** Author      : Paul Isaacs (MMM yyyy)
** Modified by : Howard Look (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_DRAGPOINT_DRAGGER_
#define  _SO_DRAGPOINT_DRAGGER_
 
#include <Inventor/SbLinear.h>
#include <Inventor/SbBox.h>
#include <Inventor/draggers/SoDragger.h>
#include <Inventor/fields/SoSFVec3f.h>
#include <Inventor/sensors/SoSensor.h>
 
 
class SoFieldSensor;
 
//
//  Class: SoDragPointDragger
//
//  DragPoint dragger - allows user to move a single coordinate in
//  three dimensions.
//
 
class  SoDragPointDragger : public SoDragger
{
  SO_KIT_HEADER(SoDragPointDragger);
 
  SO_KIT_CATALOG_ENTRY_HEADER(noRotSep);
  SO_KIT_CATALOG_ENTRY_HEADER(xTranslatorSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(xTranslator);
  SO_KIT_CATALOG_ENTRY_HEADER(xyTranslatorSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(xyTranslator);
 
  SO_KIT_CATALOG_ENTRY_HEADER(rotXSep);
  SO_KIT_CATALOG_ENTRY_HEADER(rotX);
  SO_KIT_CATALOG_ENTRY_HEADER(xzTranslatorSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(xzTranslator);
 
  SO_KIT_CATALOG_ENTRY_HEADER(rotYSep);
  SO_KIT_CATALOG_ENTRY_HEADER(rotY);
  SO_KIT_CATALOG_ENTRY_HEADER(zTranslatorSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(zTranslator);
  SO_KIT_CATALOG_ENTRY_HEADER(yzTranslatorSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(yzTranslator);
 
  SO_KIT_CATALOG_ENTRY_HEADER(rotZSep);
  SO_KIT_CATALOG_ENTRY_HEADER(rotZ);
  SO_KIT_CATALOG_ENTRY_HEADER(yTranslatorSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(yTranslator);
 
  SO_KIT_CATALOG_ENTRY_HEADER(xFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(xFeedbackSep);
  SO_KIT_CATALOG_ENTRY_HEADER(xFeedbackTranslation);
  SO_KIT_CATALOG_ENTRY_HEADER(xFeedback);
 
  SO_KIT_CATALOG_ENTRY_HEADER(yFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(yFeedbackSep);
  SO_KIT_CATALOG_ENTRY_HEADER(yFeedbackTranslation);
  SO_KIT_CATALOG_ENTRY_HEADER(yFeedback);
 
  SO_KIT_CATALOG_ENTRY_HEADER(zFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(zFeedbackSep);
  SO_KIT_CATALOG_ENTRY_HEADER(zFeedbackTranslation);
  SO_KIT_CATALOG_ENTRY_HEADER(zFeedback);
 
  SO_KIT_CATALOG_ENTRY_HEADER(planeFeedbackSep);
  SO_KIT_CATALOG_ENTRY_HEADER(planeFeedbackTranslation);
  SO_KIT_CATALOG_ENTRY_HEADER(planeFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(yzFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(xzFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(xyFeedback);
 
 public:
  SoDragPointDragger();
 
  SoSFVec3f translation;
 
 public:
  void    setJumpLimit(float limit)   { jumpLimit = limit; }
  float   getJumpLimit() const        { return jumpLimit; }
 
  void showNextDraggerSet();
 
  enum DraggerSet {
    /*
     * X axis dragger set (x-line/yz-plane)
     */
    X_AXIS,
    /*
     * Y axis dragger set (y-line/xz-plane)
     */
    Y_AXIS,
    /*
     * Z axis dragger set (z-line/xy-plane)
     */
    Z_AXIS
  };
 
  void showDraggerSet( DraggerSet set );
 
 private:
  static void         initClass();    // initialize the class
  static void         exitClass();
 
 private:
 
  static void startCB( void *, SoDragger * );
  static void motionCB( void *, SoDragger * );
  static void finishCB( void *, SoDragger * );
 
  SoFieldSensor *fieldSensor;
  static void fieldSensorCB( void *, SoSensor * );
  static void valueChangedCB( void *, SoDragger * );
 
  static void metaKeyChangeCB( void *, SoDragger *);
 
  void        dragStart();
  void        drag();
  void        dragFinish();
    
  // 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();
 
  virtual ~SoDragPointDragger();
 
 private:
    
  SoDragger *currentDragger;
  SbVec3f    startLocalHitPt;
 
  SbBool          shftDown;  // used to keep track of if meta key is down.
 
  // The box defining the area where the feedback appears.
  // This box stays still in world space whil the dragger is moved.
  // But when the dragger gets too close to the edge, it jumps over
  // to define a new box.
  // Limit box in local space preserves size of box even when world
  // space coordinates are very large (small box dimensions could be
  // lost because of limited floating point precision).
  SbBox3f     limitBox;
  SbBox3f     localLimitBox;
    
  // when to jump
  float       jumpLimit;
 
  // sets the feedback geometry based on the level of
  // constraints
  void        setFeedbackGeometry();
 
  // checks the limit box and extends it if necessary
  void        checkBoxLimits();
 
  // Sets the offsetWorkLimit box and updates the feedback geometry 
  void  updateLimitBoxAndFeedback();
 
  static const char geomBuffer[];
 
  SoGetBoundingBoxAction* bba;
 
  //  Cached values to make updating feedback more efficient
  SoNode *oldXAxisNode;
  SoNode *oldYAxisNode;
  SoNode *oldZAxisNode;
 
};
 
#endif  /* _SO_DRAGPOINT_DRAGGER_ */