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SoVRMLDragSensor.h

00001 /**************************************************************************\
00002  *
00003  *  This file is part of the Coin 3D visualization library.
00004  *  Copyright (C) 1998-2007 by Systems in Motion.  All rights reserved.
00005  *
00006  *  This library is free software; you can redistribute it and/or
00007  *  modify it under the terms of the GNU General Public License
00008  *  ("GPL") version 2 as published by the Free Software Foundation.
00009  *  See the file LICENSE.GPL at the root directory of this source
00010  *  distribution for additional information about the GNU GPL.
00011  *
00012  *  For using Coin with software that can not be combined with the GNU
00013  *  GPL, and for taking advantage of the additional benefits of our
00014  *  support services, please contact Systems in Motion about acquiring
00015  *  a Coin Professional Edition License.
00016  *
00017  *  See http://www.coin3d.org/ for more information.
00018  *
00019  *  Systems in Motion, Postboks 1283, Pirsenteret, 7462 Trondheim, NORWAY.
00020  *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
00021  *
00022 \**************************************************************************/
00023 
00024 #ifndef COIN_SOVRMLDRAGSENSOR_H
00025 #define COIN_SOVRMLDRAGSENSOR_H
00026 
00027 #include <Inventor/nodes/SoSubNode.h>
00028 #include <Inventor/VRMLnodes/SoVRMLSensor.h>
00029 #include <Inventor/fields/SoSFVec3f.h>
00030 #include <Inventor/SbVec2s.h>
00031 #include <Inventor/SbVec2f.h>
00032 #include <Inventor/SbMatrix.h>
00033 #include <Inventor/SbViewVolume.h>
00034 
00035 class SbMatrix;
00036 
00037 class COIN_DLL_API SoVRMLDragSensor : public SoVRMLSensor {
00038   typedef SoVRMLSensor inherited;
00039 
00040   SO_NODE_ABSTRACT_HEADER(SoVRMLDragSensor);
00041 
00042 public:
00043   SoSFVec3f trackPoint_changed;
00044   SoSFBool autoOffset;
00045 
00046   //  virtual void GLRender(SoGLRenderAction * action);
00047   virtual void handleEvent(SoHandleEventAction * action);
00048   static void initClass(void);
00049 
00050 protected:
00051   
00052   virtual SbBool dragStart(void) = 0;
00053   virtual void drag(void) = 0;
00054   virtual void dragFinish(void) = 0;
00055 
00056   SoVRMLDragSensor(void);
00057   virtual ~SoVRMLDragSensor();
00058 
00059   const SbVec3f & getLocalStartingPoint(void) const;
00060   const SbMatrix & getLocalToWorldMatrix(void) const;
00061   const SbMatrix & getWorldToLocalMatrix(void) const;
00062   const SbViewVolume & getViewVolume(void) const;
00063   const SbVec2f & getNormalizedLocaterPosition(void) const;
00064 
00065 private:
00066   // FIXME: move to private class
00067   SbVec3f hitpt;
00068   SbMatrix obj2world;
00069   SbMatrix world2obj;
00070   SbVec2s mousepos;
00071   SbVec2f normpos;
00072   SbViewVolume viewvolume;
00073 };
00074 
00075 #endif // ! COIN_SOVRMLDRAGSENSOR_H

Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.

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