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osg::FlyNavigator

osg::FlyNavigator Class Reference
[Navigators]

Navigator for simple fly model. See Fly Navigator for a description. More...

#include <OSGFlyNavigator.h>

Inheritance diagram for osg::FlyNavigator:

osg::WalkNavigator List of all members.

Public Member Functions

Constructors
* FlyNavigator ()
Destructors
*virtual ~FlyNavigator ()
Get
*Matrix & getMatrix (void)
Pnt3f & getFrom (void)
Pnt3f & getAt (void)
Vec3f & getUp (void)
Set
*void setFrom (Pnt3f new_from)
void setAt (Pnt3f new_at)
void setUp (Vec3f new_up)
void set (Pnt3f new_from, Pnt3f new_at, Vec3f new_up)
void set (Matrix new_matrix)
Flyer Transformations
*void rotate (Real32 deltaX, Real32 deltaY)
Real32 forward (Real32 step)
Real32 right (Real32 step)

Protected Attributes

Members
*Pnt3f _rFrom
Pnt3f _rAt
Vec3f _vUp
Matrix _tMatrix

Detailed Description

The FlyNavigator models a simple flying navigation model, see Fly Navigator for a description.

Definition at line 55 of file OSGFlyNavigator.h.

Constructor & Destructor Documentation

FlyNavigator::FlyNavigator (   ) 
 

Definition at line 83 of file OSGFlyNavigator.cpp.

References _rAt, _rFrom, _tMatrix, _vUp, osg::TransformationMatrix< ValueTypeT >::setIdentity(), and osg::VecStorage3< ValueTypeT >::setValues().

00084 {
00085     _rFrom  .setValues(0,0,0);
00086     _rAt    .setValues(0,0,1);
00087     _vUp    .setValues(0,1,0);
00088     _tMatrix.setIdentity();
00089 }

FlyNavigator::~FlyNavigator (   )  [virtual]
 

Definition at line 94 of file OSGFlyNavigator.cpp.

00095 {
00096 }

Member Function Documentation

Matrix & FlyNavigator::getMatrix (  void   ) 
 

Get the current transformation matrix.

Definition at line 102 of file OSGFlyNavigator.cpp.

References _rAt, _rFrom, _tMatrix, _vUp, and osg::MatrixLookAt().

Referenced by osg::Navigator::getMatrix().

00103 {
00104     MatrixLookAt(_tMatrix,_rFrom,_rAt,_vUp);
00105     return _tMatrix;
00106 }

Pnt3f & FlyNavigator::getFrom (  void   ) 
 

Get the from point.

Definition at line 110 of file OSGFlyNavigator.cpp.

References _rFrom.

Referenced by osg::Navigator::getFrom().

00111 {
00112     return _rFrom;
00113 }

Pnt3f & FlyNavigator::getAt (  void   ) 
 

Get the at point.

Definition at line 117 of file OSGFlyNavigator.cpp.

References _rAt.

Referenced by osg::Navigator::getAt().

00118 {
00119     return _rAt;
00120 }

Vec3f & FlyNavigator::getUp (  void   ) 
 

Get the up vector.

Definition at line 124 of file OSGFlyNavigator.cpp.

References _vUp.

Referenced by osg::Navigator::getUp().

00125 {
00126     return _vUp;
00127 }

void FlyNavigator::setFrom (  Pnt3f  new_from  ) 
 

Set the from point, the point where the viewer is (i.e the center of all transformations).

Definition at line 135 of file OSGFlyNavigator.cpp.

References _rFrom.

Referenced by osg::Navigator::setFrom().

00136 {
00137     _rFrom=new_from;
00138 }

void FlyNavigator::setAt (  Pnt3f  new_At  ) 
 

Sets the target point at which the viewer is looking.

Definition at line 142 of file OSGFlyNavigator.cpp.

References _rAt.

Referenced by osg::Navigator::setAt().

00143 {
00144     _rAt=new_At;
00145 }

void FlyNavigator::setUp (  Vec3f  new_up  ) 
 

Sets the up vector, i.e. the direction that point up on the screen.

Definition at line 149 of file OSGFlyNavigator.cpp.

References _vUp.

Referenced by osg::Navigator::setUp().

00150 {
00151     _vUp=new_up;
00152 }

void FlyNavigator::set (  Pnt3f  new_from,
Pnt3f  new_At,
Vec3f  new_up
) 
 

Set the position and the orientation at once.

Definition at line 156 of file OSGFlyNavigator.cpp.

References _rAt, _rFrom, and _vUp.

Referenced by osg::Navigator::set(), and set().

00157 {
00158     _rFrom=new_from;
00159     _rAt=new_At;
00160     _vUp=new_up;
00161 }

void FlyNavigator::set (  Matrix  new_matrix  ) 
 

Set the position and the orientation at once using a matrix.

Definition at line 165 of file OSGFlyNavigator.cpp.

References _rAt, _rFrom, _vUp, and set().

00166 {
00167     _rFrom= (Pnt3f) new_matrix[3];
00168     _rAt  = (Pnt3f)(new_matrix[3] - new_matrix[2]);
00169     _vUp  = (Vec3f) new_matrix[1];
00170     set(_rFrom, _rAt, _vUp);
00171 }

void FlyNavigator::rotate (  Real32  deltaX,
Real32  deltaY
) 
 

Rotate the viewer deltaX around the up axis and deltaY around the left/right axis. deltaX and deltaY should be between -Pi and Pi.

Reimplemented in osg::WalkNavigator.

Definition at line 178 of file OSGFlyNavigator.cpp.

References _rAt, _rFrom, _vUp, osg::VectorInterface< ValueTypeT, StorageInterfaceT >::crossThis(), osg::QuaternionBase< ValueTypeT >::getValue(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::normalize(), osg::TransformationMatrix< ValueTypeT >::setIdentity(), osg::TransformationMatrix< ValueTypeT >::setTranslate(), and osg::QuaternionBase< ValueTypeT >::setValueAsAxisRad().

Referenced by osg::Navigator::keyPress(), osg::Navigator::moveTo(), and osg::WalkNavigator::rotate().

00179 {
00180     // rotate around the up vector
00181     Matrix final,temp;
00182     Quaternion q;
00183 
00184     q.setValueAsAxisRad(_vUp,-deltaX);
00185     q.getValue(temp);
00186 
00187     final.setIdentity();
00188     final.setTranslate(_rFrom);
00189     final.mult(temp);
00190 
00191     temp.setIdentity();
00192     temp.setTranslate(-_rFrom[0],-_rFrom[1],-_rFrom[2]);
00193 
00194     final.mult(temp);
00195     final.multMatrixPnt(_rAt);
00196 
00197     // rotate around the side vector
00198     Vec3f lv = _rAt-_rFrom;
00199     lv.normalize();
00200 
00201     Vec3f sv = lv;
00202     sv.crossThis(_vUp);
00203     sv.normalize();
00204     q.setValueAsAxisRad(sv,-deltaY);
00205     q.getValue(temp);
00206 
00207     final.setIdentity();
00208     final.setTranslate(_rFrom);
00209     final.mult(temp);
00210 
00211     temp.setIdentity();
00212     temp.setTranslate(-_rFrom[0],-_rFrom[1],-_rFrom[2]);
00213 
00214     final.mult(temp);
00215     final.multMatrixPnt(_rAt);
00216 }

Real32 FlyNavigator::forward (  Real32  step  ) 
 

Flies forward, i.e. translation step units along the view vector.

Reimplemented in osg::WalkNavigator.

Definition at line 220 of file OSGFlyNavigator.cpp.

References _rAt, _rFrom, osg::TransformationMatrix< ValueTypeT >::multMatrixPnt(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::normalize(), osg::TransformationMatrix< ValueTypeT >::setIdentity(), and osg::TransformationMatrix< ValueTypeT >::setTranslate().

Referenced by osg::Navigator::buttonPress(), osg::Navigator::keyPress(), osg::Navigator::moveTo(), and osg::Navigator::setDistance().

00221 {
00222     Vec3f lv;
00223     lv = _rFrom-_rAt;
00224     lv.normalize();
00225     lv *= (step);
00226     Matrix transl;
00227     transl.setIdentity();
00228     transl.setTranslate(lv);
00229     transl.multMatrixPnt(_rAt);
00230     transl.multMatrixPnt(_rFrom);
00231     return 0.0;
00232 }

Real32 FlyNavigator::right (  Real32  step  ) 
 

Strafes to the right, i.e. translates along the side vector.

Reimplemented in osg::WalkNavigator.

Definition at line 236 of file OSGFlyNavigator.cpp.

References _rAt, _rFrom, _vUp, osg::VectorInterface< ValueTypeT, StorageInterfaceT >::crossThis(), osg::TransformationMatrix< ValueTypeT >::multMatrixPnt(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::normalize(), osg::TransformationMatrix< ValueTypeT >::setIdentity(), and osg::TransformationMatrix< ValueTypeT >::setTranslate().

Referenced by osg::Navigator::keyPress().

00237 {
00238     Vec3f sv;
00239     sv = _rFrom-_rAt;
00240     sv.crossThis(_vUp);
00241     sv.normalize();
00242     sv *= (step);
00243     Matrix transl;
00244     transl.setIdentity();
00245     transl.setTranslate(sv);
00246     transl.multMatrixPnt(_rAt);
00247     transl.multMatrixPnt(_rFrom);
00248     return 0.0;
00249 }

Member Data Documentation

osg::FlyNavigator::_rFrom [protected]
 

The from point, i.e. the viewer position.

Referenced by FlyNavigator(), osg::WalkNavigator::forward(), forward(), getFrom(), getMatrix(), osg::WalkNavigator::right(), right(), rotate(), set(), and setFrom().

osg::FlyNavigator::_rAt [protected]
 

The at point, i.e. the target position.

Referenced by FlyNavigator(), osg::WalkNavigator::forward(), forward(), getAt(), getMatrix(), osg::WalkNavigator::right(), right(), rotate(), set(), and setAt().

osg::FlyNavigator::_vUp [protected]
 

The up vector.

Referenced by FlyNavigator(), osg::WalkNavigator::forward(), getMatrix(), getUp(), osg::WalkNavigator::right(), right(), rotate(), set(), and setUp().

osg::FlyNavigator::_tMatrix [protected]
 

The transformation matrix for this navigator.

Referenced by FlyNavigator(), and getMatrix().

The documentation for this class was generated from the following files:
Generated on Thu Aug 25 04:23:50 2005 for OpenSG by  doxygen 1.4.3