SoSpotLightManip.h

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/*=======================================================================
** Author      : SGI (MMM YYYY)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
//
// Description:
//      This file defines a manipulator for a spot light nodes.
//      It is subclassed from SoSpotLight.
//
 
 
#ifndef  _SO_SPOT_LIGHT_MANIP_
#define  _SO_SPOT_LIGHT_MANIP_
 
#include <Inventor/SbLinear.h>
#include <Inventor/draggers/SoDragger.h>
#include <Inventor/nodes/SoSpotLight.h>
#include <Inventor/sensors/SoFieldSensor.h>
 

class  SoSpotLightManip : public SoSpotLight
{
  SO_NODE_HEADER(SoSpotLightManip);
 
 public:
  SoSpotLightManip();

  SoDragger *getDragger();

  SbBool replaceNode( SoPath *p );
 

SbBool replaceManip(SoPath *p, SoSpotLight *newOne ) const;
 
 private:
 
  // These functions implement all actions for nodekits.
  // They first traverse the children, then use the SoSpotLight
  // version of the actions. They traverse first so that the light
  // will affect objects which follow it in the tree, but not the
  // dragger-child.
  virtual void doAction( SoAction *action );
  virtual void callback( SoCallbackAction *action );
  virtual void GLRender( SoGLRenderAction *action );
  virtual void getBoundingBox( SoGetBoundingBoxAction *action );
  virtual void getMatrix(SoGetMatrixAction *action );
  virtual void handleEvent( SoHandleEventAction *action );
  virtual void pick( SoPickAction *action );
  virtual void search( SoSearchAction *action );
  virtual void write( SoWriteAction *action );
 
 private:
 
  static void initClass();
  static void exitClass();
 
  virtual SoChildList *getChildren() const;
  virtual bool isGroup() { return true; }
 
  // Internal child management following inheritance of classes.
  virtual void internalRemoveChild( int index );
  virtual void internalRemoveChild( SoNode *child) { internalRemoveChild(internalFindChild(child)); }
  virtual void internalRemoveAllChildren();
  virtual void internalAddChild( SoNode *child );
  virtual int internalFindChild( const SoNode *child ) const;
  virtual void internalInsertChild( SoNode *child, int newChildIndex );
  virtual SoNode *internalGetChild( int index) const { return (*children)[index]; }
  virtual void internalReplaceChild( int index, SoNode *newChild);
  virtual void internalReplaceChild( SoNode *oldChild, SoNode *newChild) { internalReplaceChild(internalFindChild(oldChild),newChild); }
 
  // Redefines this to also copy the dragger
  virtual void        copyContents(const SoFieldContainer *fromFC,
                                   SbBool copyConnections);
 
 private:
 
  static void transferFieldValues( const SoSpotLight *from, 
                                   SoSpotLight *to);
 
  SoFieldSensor *locationFieldSensor;
  SoFieldSensor *directionFieldSensor;
  SoFieldSensor *angleFieldSensor;
  SoFieldSensor *colorFieldSensor;
  static void fieldSensorCB(void *, SoSensor *);
  static void valueChangedCB(void *,SoDragger *);
 
  void setDragger( SoDragger *newDragger );
 
  SoChildList *children;
  virtual SbBool readInstance(SoInput *in, unsigned short flags);
  virtual SbBool readChildren(SoInput *in);
 
  virtual ~SoSpotLightManip();
 
 private:
  int getNumChildren() const { return (children->getLength()); }
};    
 
#endif  /* _SO_SPOT_LIGHT_MANIP_ */