Inventor/draggers/SoTransformerDragger.h

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/*=======================================================================
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/*=======================================================================
** Author      : Paul Isaacs (MMM yyyy)
**=======================================================================*/
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/


#ifndef  _SO_TRANSFORMER_DRAGGER_
#define  _SO_TRANSFORMER_DRAGGER_

#include <Inventor/SoLists.h>
#include <Inventor/draggers/SoDragger.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/fields/SoSFRotation.h>
#include <Inventor/fields/SoSFVec3f.h>
#include <Inventor/sensors/SoSensor.h>

class SbDict;
class SbPlaneProjector;
class SbLineProjector;
class SbSphereSectionProjector;
class SbCylinderPlaneProjector;
class SoFieldSensor;

//
//  Class: SoTransformerDragger
//
//  SoTransformerDragger - allows user to transform objects.
//

class  SoTransformerDragger : public SoDragger {

  SO_KIT_HEADER(SoTransformerDragger);

  SO_KIT_CATALOG_ENTRY_HEADER(overallStyle);

  // For making the dragger surround what lies above it.
  SO_KIT_CATALOG_ENTRY_HEADER(surroundScale);

  SO_KIT_CATALOG_ENTRY_HEADER(translatorSep);
  SO_KIT_CATALOG_ENTRY_HEADER(translator1Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(translator1LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(translator1);
  SO_KIT_CATALOG_ENTRY_HEADER(translator1Active);
  SO_KIT_CATALOG_ENTRY_HEADER(translator2Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(translator2LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(translator2);
  SO_KIT_CATALOG_ENTRY_HEADER(translator2Active);
  SO_KIT_CATALOG_ENTRY_HEADER(translator3Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(translator3LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(translator3);
  SO_KIT_CATALOG_ENTRY_HEADER(translator3Active);
  SO_KIT_CATALOG_ENTRY_HEADER(translator4Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(translator4LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(translator4);
  SO_KIT_CATALOG_ENTRY_HEADER(translator4Active);
  SO_KIT_CATALOG_ENTRY_HEADER(translator5Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(translator5LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(translator5);
  SO_KIT_CATALOG_ENTRY_HEADER(translator5Active);
  SO_KIT_CATALOG_ENTRY_HEADER(translator6Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(translator6LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(translator6);
  SO_KIT_CATALOG_ENTRY_HEADER(translator6Active);


  SO_KIT_CATALOG_ENTRY_HEADER(rotatorSep);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator1Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator1LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator1);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator1Active);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator2Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator2LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator2);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator2Active);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator3Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator3LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator3);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator3Active);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator4Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator4LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator4);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator4Active);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator5Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator5LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator5);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator5Active);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator6Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator6LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator6);
  SO_KIT_CATALOG_ENTRY_HEADER(rotator6Active);

  SO_KIT_CATALOG_ENTRY_HEADER(scaleSep);
  SO_KIT_CATALOG_ENTRY_HEADER(scale1Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale1LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale1);
  SO_KIT_CATALOG_ENTRY_HEADER(scale1Active);
  SO_KIT_CATALOG_ENTRY_HEADER(scale2Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale2LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale2);
  SO_KIT_CATALOG_ENTRY_HEADER(scale2Active);
  SO_KIT_CATALOG_ENTRY_HEADER(scale3Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale3LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale3);
  SO_KIT_CATALOG_ENTRY_HEADER(scale3Active);
  SO_KIT_CATALOG_ENTRY_HEADER(scale4Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale4LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale4);
  SO_KIT_CATALOG_ENTRY_HEADER(scale4Active);
  SO_KIT_CATALOG_ENTRY_HEADER(scale5Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale5LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale5);
  SO_KIT_CATALOG_ENTRY_HEADER(scale5Active);
  SO_KIT_CATALOG_ENTRY_HEADER(scale6Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale6LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale6);
  SO_KIT_CATALOG_ENTRY_HEADER(scale6Active);
  SO_KIT_CATALOG_ENTRY_HEADER(scale7Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale7LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale7);
  SO_KIT_CATALOG_ENTRY_HEADER(scale7Active);
  SO_KIT_CATALOG_ENTRY_HEADER(scale8Switch);
  SO_KIT_CATALOG_ENTRY_HEADER(scale8LocateGroup);
  SO_KIT_CATALOG_ENTRY_HEADER(scale8);
  SO_KIT_CATALOG_ENTRY_HEADER(scale8Active);

  SO_KIT_CATALOG_ENTRY_HEADER(axisFeedbackSep);
  SO_KIT_CATALOG_ENTRY_HEADER(axisFeedbackLocation);
  SO_KIT_CATALOG_ENTRY_HEADER(xAxisFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(xAxisFeedbackActive);
  SO_KIT_CATALOG_ENTRY_HEADER(xAxisFeedbackSelect);
  SO_KIT_CATALOG_ENTRY_HEADER(xCrosshairFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(yAxisFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(yAxisFeedbackActive);
  SO_KIT_CATALOG_ENTRY_HEADER(yAxisFeedbackSelect);
  SO_KIT_CATALOG_ENTRY_HEADER(yCrosshairFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(zAxisFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(zAxisFeedbackActive);
  SO_KIT_CATALOG_ENTRY_HEADER(zAxisFeedbackSelect);
  SO_KIT_CATALOG_ENTRY_HEADER(zCrosshairFeedback);

  SO_KIT_CATALOG_ENTRY_HEADER(translateBoxFeedbackSep);
  SO_KIT_CATALOG_ENTRY_HEADER(translateBoxFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(translateBoxFeedbackRotation);
  SO_KIT_CATALOG_ENTRY_HEADER(translateBoxFeedback);

  SO_KIT_CATALOG_ENTRY_HEADER(scaleBoxFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(scaleBoxFeedback);

  SO_KIT_CATALOG_ENTRY_HEADER(posXWallFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(posXWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(posXRoundWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(posYWallFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(posYWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(posYRoundWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(posZWallFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(posZWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(posZRoundWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(negXWallFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(negXWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(negXRoundWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(negYWallFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(negYWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(negYRoundWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(negZWallFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(negZWallFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(negZRoundWallFeedback);

  SO_KIT_CATALOG_ENTRY_HEADER(radialFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(radialFeedback);

  SO_KIT_CATALOG_ENTRY_HEADER(circleFeedbackSep);
  SO_KIT_CATALOG_ENTRY_HEADER(circleFeedbackTransformSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(circleFeedbackAntiSquish);
  SO_KIT_CATALOG_ENTRY_HEADER(circleFeedbackTransform);
  SO_KIT_CATALOG_ENTRY_HEADER(xCircleFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(xCircleFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(yCircleFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(yCircleFeedback);
  SO_KIT_CATALOG_ENTRY_HEADER(zCircleFeedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(zCircleFeedback);


 public:
  SoTransformerDragger();

  SoSFRotation    rotation;
  SoSFVec3f       translation;
  SoSFVec3f       scaleFactor;
  SoSFFloat       minDiscRotDot;

  void unsquishKnobs();

  SbBool isLocateHighlighting() { return locateHighlightOn; }
  void setLocateHighlighting( SbBool onOff );

  static void setColinearThreshold(int newVal);
  static int getColinearThreshold();

 private:

  // These convert points and directions from the space of the unit
  // box to world space. Can be useful during callbacks.
  SbVec3f getBoxPointInWorldSpace( const SbVec3f &pointOnUnitBox );
  SbVec3f getBoxDirInWorldSpace( const SbVec3f &dirOnUnitBox );
  SbVec3f getWorldPointInBoxSpace( const SbVec3f &pointInWorldSpace );
  SbVec2f getWorldPointInPixelSpace( const SbVec3f &thePoint );

  // Callbacks would like to know this sometimes.
  // It's the location in bbox space of the point about which the 
  // transformer is rotating or scaling.  It's different depending on 
  // which part is picked (determined by getCurrentState()) and
  // which modifier keys are down.
  SbVec3f getInteractiveCenterInBoxSpace() 
    { return interactiveCenterInBoxSpace; }

 private:
  static void         initClass();    // initialize the class
  static void exitClass();

  enum State
  { INACTIVE, 
    RIT_X_ROTATE,  TOP_Y_ROTATE,  FNT_Z_ROTATE, 
    LFT_X_ROTATE,  BOT_Y_ROTATE,  BAK_Z_ROTATE, 

    PX_PY_PZ_3D_SCALE, PX_PY_NZ_3D_SCALE, PX_NY_PZ_3D_SCALE, 
    PX_NY_NZ_3D_SCALE, NX_PY_PZ_3D_SCALE, NX_PY_NZ_3D_SCALE, 
    NX_NY_PZ_3D_SCALE, NX_NY_NZ_3D_SCALE, 

    RIT_TRANSLATE,  TOP_TRANSLATE,  FNT_TRANSLATE,
    LFT_TRANSLATE,  BOT_TRANSLATE,  BAK_TRANSLATE };

  State getCurrentState() { return currentState; }

 private:

  // Callbacks for drag start, motion, and finish
  static void startCB( void *, SoDragger * );
  static void motionCB( void *, SoDragger * );
  static void finishCB( void *, SoDragger * );
    
  SoFieldSensor *translFieldSensor;
  SoFieldSensor *scaleFieldSensor;
  SoFieldSensor *rotateFieldSensor;
  static void   fieldSensorCB( void *, SoSensor * );
  static void valueChangedCB( void *, SoDragger * );

  // Callbacks for pressing and releasing the meta keys
  static void metaKeyChangeCB( void *, SoDragger *);

  // These really do the work during startCB, motionCB, and finishCB
  void        dragStart();
  void        drag();
  void        dragFinish();

  // Sets switch values for all parts in the scale, rotate, and translate
  // assemblies.
  void setAllPartSwitches( int     scaleAssemblyWhich,
                           int    rotateAssemblyWhich,
                           int translateAssemblyWhich );

  // detach/attach any sensors, callbacks, and/or field connections.
  // 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 ~SoTransformerDragger();

  // Finds all SoAntiSquish nodes in subgraph and puts them in list.
  void updateAntiSquishList();
  // Tells all nodes in the antiSquishList to recalculate next time through.
  SoNodeList antiSquishList;

  int    getMouseGestureDirection(SbBool xAllowed, SbBool yAllowed, 
                                  SbBool zAllowed);

  static int getIgnoreAxis(SbVec2f axis[3][2], SbBool xAllowed, 
                           SbBool yAllowed, SbBool zAllowed );

  static void makeMinorAxisPerpendicularIfColinear( SbVec2f origin, 
                                                    SbVec2f axisEnds[3][2], int indexA, int indexB );

  static SbBool isColinear(SbVec2f a1[2], SbVec2f a2[2], int pixels);

 private:

  State               currentState;     
  int                 currentDir;   // Used for 1-D operations,
  // this variable records the current
  // axis being used.
  // when doing 1-D rot, can rotate as disc (like spinning a turntable) or 
  // cylinder (like rolling a rolling pin). This flag says which.
  SbBool              rotatingAsDisc;

  SbPlaneProjector           *planeProj;
  SbLineProjector            *lineProj;
  SbSphereSectionProjector   *sphereProj;
  SbCylinderPlaneProjector   *cylProj;

  State           restartState;   // used by meta callback. 
  SbVec3f         worldRestartPt; // used during interaction

  SbMatrix prevMotionMatrix; // used during rotate interaction
  SbVec3f  prevWorldHitPt;   // used during rotate and translate interaction
  SbVec3f  interactiveCenterInBoxSpace; // used during rotations.

  // used to reset prevWorldHitPt after initializing the cylinder projector.
  // Need to store during rotateInit() since SoDragger provides no method 
  // to retrieve.
  SbVec2f  startNormalizedLocaterPosition; 

  SbBool          altDown, ctlDown, shftDown;  // used to keep track of
  // which meta keys were down.
  SbBool constraining; // Depends on state of shftDown and which part picked.

  // functions which do all the work
  void        setHighlights();
  void        setFeedback();
  void        setFeedbackForTranslate();
  void        setFeedbackForScale();
  void        setFeedbackForRotate();

  State               getStateFromPick();
  SbBool              translateInit();
  SbBool              rotateInit();
  SbBool              scaleInit();

  SbBool              translateDrag();
  SbBool              scaleDrag();

  SbBool              rotateDrag();
  SbBool              rotateConstrainedDrag();
  SbBool              rotateConstrainedDiscDrag();
  SbBool              rotateConstrainedCylindricalDrag();

  void initSphereProjector();
  void initDiscProjector();
  void initCylinderProjector();

  SbBool getShouldRotateAsDisc();
  int getConstrainedRotationAxis();

  // character strings from which the shared geometry is read
  static const char geomBuffer[];            

  void setAllDefaultParts();

  SbBool locateHighlightOn;

  static int colinearThreshold;

  // These subroutines construct the catalog. They normally would just
  // sit in the constructor, but the compiler doesn't like such huge
  // methods so we broke it up into small chunks.
  void makeCatalog();
  void makeTranslaterCatalogParts();
  void makeRotaterCatalogParts();
  void makeScalerCatalogParts();
  void makeAxisFeedbackCatalogParts();
  void makeBoxFeedbackCatalogParts();
  void makeWallFeedbackCatalogParts();
  void makeRadialFeedbackCatalogParts();
  void makeCircleFeedbackCatalogParts();

};

#endif /* _SO_TRANSFORMER_DRAGGER_ */

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Open Inventor Toolkit reference manual, generated on 15 Mar 2023
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