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SoVRMLDragSensor.h
1 /**************************************************************************\
2 *
3 * This file is part of the Coin 3D visualization library.
4 * Copyright (C) by Kongsberg Oil & Gas Technologies.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * ("GPL") version 2 as published by the Free Software Foundation.
9 * See the file LICENSE.GPL at the root directory of this source
10 * distribution for additional information about the GNU GPL.
11 *
12 * For using Coin with software that can not be combined with the GNU
13 * GPL, and for taking advantage of the additional benefits of our
14 * support services, please contact Kongsberg Oil & Gas Technologies
15 * about acquiring a Coin Professional Edition License.
16 *
17 * See http://www.coin3d.org/ for more information.
18 *
19 * Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
20 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org
21 *
22 \**************************************************************************/
23
24 #ifndef COIN_SOVRMLDRAGSENSOR_H
25 #define COIN_SOVRMLDRAGSENSOR_H
26
27 #include <Inventor/nodes/SoSubNode.h>
28 #include <Inventor/VRMLnodes/SoVRMLSensor.h>
29 #include <Inventor/fields/SoSFVec3f.h>
30 #include <Inventor/SbVec2s.h>
31 #include <Inventor/SbVec2f.h>
32 #include <Inventor/SbMatrix.h>
33 #include <Inventor/SbViewVolume.h>
34
35 class SbMatrix;
36
37 class COIN_DLL_API SoVRMLDragSensor : public SoVRMLSensor {
38 typedef SoVRMLSensor inherited;
39
40 SO_NODE_ABSTRACT_HEADER(SoVRMLDragSensor);
41
42 public:
43 SoSFVec3f trackPoint_changed;
44 SoSFBool autoOffset;
45
46 // virtual void GLRender(SoGLRenderAction * action);
47 virtual void handleEvent(SoHandleEventAction * action);
48 static void initClass(void);
49
50 protected:
51
52 virtual SbBool dragStart(void) = 0;
53 virtual void drag(void) = 0;
54 virtual void dragFinish(void) = 0;
55
56 SoVRMLDragSensor(void);
57 virtual ~SoVRMLDragSensor();
58
59 const SbVec3f & getLocalStartingPoint(void) const;
60 const SbMatrix & getLocalToWorldMatrix(void) const;
61 const SbMatrix & getWorldToLocalMatrix(void) const;
62 const SbViewVolume & getViewVolume(void) const;
63 const SbVec2f & getNormalizedLocaterPosition(void) const;
64
65 private:
66 // FIXME: move to private class
67 SbVec3f hitpt;
68 SbMatrix obj2world;
69 SbMatrix world2obj;
70 SbVec2s mousepos;
71 SbVec2f normpos;
72 SbViewVolume viewvolume;
73 };
74
75 #endif // ! COIN_SOVRMLDRAGSENSOR_H

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