1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* -*-c++-*-
*
* OpenSceneGraph example, osghangglide.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef OSGGA_GliderMANIPULATOR
#define OSGGA_GliderMANIPULATOR 1
#include <osgGA/CameraManipulator>
#include <osg/Quat>
/**
GliderManipulator is a CameraManipulator which provides Glider simulator-like
updating of the camera position & orientation. By default, the left mouse
button accelerates, the right mouse button decelerates, and the middle mouse
button (or left and right simultaneously) stops dead.
*/
class GliderManipulator : public osgGA::CameraManipulator
{
public:
GliderManipulator();
virtual const char* className() const { return "Glider"; }
/** set the position of the matrix manipulator using a 4x4 Matrix.*/
virtual void setByMatrix(const osg::Matrixd& matrix);
/** set the position of the matrix manipulator using a 4x4 Matrix.*/
virtual void setByInverseMatrix(const osg::Matrixd& matrix) { setByMatrix(osg::Matrixd::inverse(matrix)); }
/** get the position of the manipulator as 4x4 Matrix.*/
virtual osg::Matrixd getMatrix() const;
/** get the position of the manipulator as a inverse matrix of the manipulator, typically used as a model view matrix.*/
virtual osg::Matrixd getInverseMatrix() const;
virtual void setNode(osg::Node*);
virtual const osg::Node* getNode() const;
virtual osg::Node* getNode();
virtual void home(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& us);
virtual void init(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& us);
virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& us);
/** Get the keyboard and mouse usage of this manipulator.*/
virtual void getUsage(osg::ApplicationUsage& usage) const;
enum YawControlMode {
YAW_AUTOMATICALLY_WHEN_BANKED,
NO_AUTOMATIC_YAW
};
/** Configure the Yaw control for the Glider model. */
void setYawControlMode(YawControlMode ycm) { _yawMode = ycm; }
protected:
virtual ~GliderManipulator();
/** Reset the internal GUIEvent stack.*/
void flushMouseEventStack();
/** Add the current mouse GUIEvent to internal stack.*/
void addMouseEvent(const osgGA::GUIEventAdapter& ea);
void computePosition(const osg::Vec3& eye,const osg::Vec3& lv,const osg::Vec3& up);
/** For the give mouse movement calculate the movement of the camera.
Return true is camera has moved and a redraw is required.*/
bool calcMovement();
// Internal event stack comprising last three mouse events.
osg::ref_ptr<const osgGA::GUIEventAdapter> _ga_t1;
osg::ref_ptr<const osgGA::GUIEventAdapter> _ga_t0;
osg::ref_ptr<osg::Node> _node;
float _modelScale;
float _velocity;
YawControlMode _yawMode;
osg::Vec3 _eye;
osg::Quat _rotation;
float _distance;
};
#endif
|
