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osg::WalkNavigator

osg::WalkNavigator Class Reference
[Navigators]

WalkNavigator class.

#include <OSGWalkNavigator.h>

Inheritance diagram for osg::WalkNavigator:

osg::FlyNavigator List of all members.

Public Member Functions

Constructors
* WalkNavigator ()
Destructors
* ~WalkNavigator ()
Set
*void setGround (NodePtr &new_ground)
void setWorld (NodePtr &new_world)
void setGroundDistance (Real32 groundDistance)
void setMinWallDistance (Real32 wallDistance)
void setPersonDimensions (Real32 height, Real32 width, Real32 fatness)
Walker Transformations
*void rotate (Real32 deltaX, Real32 deltaY)
Real32 forward (Real32 step)
Real32 right (Real32 step)
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)

Protected Attributes

Members
*Pnt3f _rFrom
Pnt3f _rAt
Vec3f _vUp
Matrix _tMatrix

Private Attributes

Members
*NodePtr _ground
NodePtr _world
Real32 _groundDistance
Real32 _wallDistance
Real32 _height
Real32 _width
Real32 _fatness
IntersectAction * _act

Detailed Description

Definition at line 50 of file OSGWalkNavigator.h.

Constructor & Destructor Documentation

WalkNavigator::WalkNavigator (   ) 
 

Constructor

Definition at line 63 of file OSGWalkNavigator.cpp.

References _act, and osg::IntersectAction::create().

00063                             : FlyNavigator(),
00064     _ground(NullFC),
00065     _world(NullFC),
00066     _groundDistance(0.75),
00067     _wallDistance(0.1),
00068     _height(0.85),
00069     _width(0.5),
00070     _fatness(0.5)
00071 {
00072     _act = IntersectAction::create();
00073 }

WalkNavigator::~WalkNavigator (   ) 
 

Destructor

Definition at line 80 of file OSGWalkNavigator.cpp.

References _act.

00081 {
00082     delete _act;
00083 }

Member Function Documentation

void WalkNavigator::setGround (  NodePtr &  new_ground  ) 
 

Definition at line 92 of file OSGWalkNavigator.cpp.

References _ground.

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

00093 {
00094     _ground=new_ground;
00095 }

void WalkNavigator::setWorld (  NodePtr &  new_world  ) 
 

Definition at line 97 of file OSGWalkNavigator.cpp.

References _world.

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

00098 {
00099     _world=new_world;
00100 }

void WalkNavigator::setGroundDistance (  Real32  groundDistance  ) 
 

Definition at line 102 of file OSGWalkNavigator.cpp.

References _groundDistance.

00103 {
00104     _groundDistance=groundDistance;
00105 }

void WalkNavigator::setMinWallDistance (  Real32  wallDistance  ) 
 

Definition at line 107 of file OSGWalkNavigator.cpp.

References _wallDistance.

00108 {
00109     _wallDistance=wallDistance;
00110 }

void WalkNavigator::setPersonDimensions (  Real32  height,
Real32  width,
Real32  fatness
) 
 

Definition at line 112 of file OSGWalkNavigator.cpp.

References _fatness, _height, and _width.

00113 {
00114     _height  = height;
00115     _width   = width;
00116     _fatness = fatness;
00117 }

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

makes a rotation

Reimplemented from osg::FlyNavigator.

Definition at line 124 of file OSGWalkNavigator.cpp.

References osg::FlyNavigator::rotate().

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

00125 {
00126     FlyNavigator::rotate(deltaX, deltaY);
00127 }

Real32 WalkNavigator::forward (  Real32  step  ) 
 

"walks" forward

Reimplemented from osg::FlyNavigator.

Definition at line 132 of file OSGWalkNavigator.cpp.

References _act, _fatness, _ground, _groundDistance, _height, osg::FlyNavigator::_rAt, osg::FlyNavigator::_rFrom, osg::FlyNavigator::_vUp, _wallDistance, _world, osg::Action::apply(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::crossThis(), osg::IntersectAction::didHit(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::dot(), osg::IntersectAction::getHitT(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::normalize(), osg::IntersectAction::setLine(), and osg::Line::setValue().

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

00133 {
00134     Vec3f lv = _rFrom - _rAt;
00135     lv.normalize();
00136 
00137     Vec3f upn = _vUp;
00138     upn.normalize();
00139 
00140     Vec3f mv = lv - upn.dot(lv)*upn;
00141     mv.normalize();
00142 
00143     //side vector symbolizes shoulders
00144     Vec3f sv = mv;
00145     sv.crossThis(upn);
00146     sv.normalize();
00147 
00148     Pnt3f rFrom = _rFrom + step*mv;
00149     Pnt3f rAt = _rAt + step*mv;
00150 
00151     Real32 dist;
00152     Line line(rFrom, -upn);
00153 
00154     //keep the walker at a constant distance from the ground
00155     _act->setLine(line);
00156     _act->apply(_ground);
00157 
00158     if (_act->didHit()) {
00159         dist = _act->getHitT();
00160         if (dist >= _height) {
00161             rFrom = rFrom + (_groundDistance-dist+_height)*upn;
00162             rAt = rAt + (_groundDistance-dist+_height)*upn;
00163         }
00164         else return 0.0;    //can't jump so high
00165     }
00166 
00167     //finally check if the move is correct or not
00168 
00169     line.setValue(_rFrom, mv);
00170     _act->setLine(line);
00171     _act->apply(_world);
00172 
00173     if (_act->didHit()) {
00174         dist = _act->getHitT();
00175         if (dist <= (rFrom-_rFrom).length()+_fatness+_wallDistance)
00176             return 0.0;     //running against a wall
00177     }
00178 
00179     //move was ok, store new values
00180     _rFrom = rFrom;
00181     _rAt = rAt;
00182     return step;
00183 }

Real32 WalkNavigator::right (  Real32  step  ) 
 

turns the viewer right or left

Reimplemented from osg::FlyNavigator.

Definition at line 188 of file OSGWalkNavigator.cpp.

References _act, _fatness, _ground, _groundDistance, _height, osg::FlyNavigator::_rAt, osg::FlyNavigator::_rFrom, osg::FlyNavigator::_vUp, _wallDistance, _world, osg::Action::apply(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::crossThis(), osg::IntersectAction::didHit(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::dot(), osg::IntersectAction::getHitT(), osg::VectorInterface< ValueTypeT, StorageInterfaceT >::normalize(), osg::IntersectAction::setLine(), and osg::Line::setValue().

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

00189 {
00190 //    Int16 sign = (step >= 0) ? -1 : 1;
00191 //    Real32 angle = 0.19634954f;
00192 //
00193 //    //rotate around the up vector
00194 //    FlyNavigator::rotate(sign*angle, 0);
00195 //    return step;
00196 
00197     Vec3f lv = _rFrom - _rAt;
00198     lv.normalize();
00199 
00200     Vec3f upn = _vUp;
00201     upn.normalize();
00202 
00203     Vec3f mv = lv - upn.dot(lv)*upn;
00204     mv.normalize();
00205 
00206     //side vector symbolizes shoulders
00207     Vec3f sv = mv;
00208     sv.crossThis(upn);
00209     sv.normalize();
00210 
00211     Pnt3f rFrom = _rFrom + step*sv;
00212     Pnt3f rAt = _rAt + step*sv;
00213 
00214     Real32 dist;
00215     Line line(rFrom, -upn);
00216 
00217     //keep the walker at a constant distance from the ground
00218     _act->setLine(line);
00219     _act->apply(_ground);
00220 
00221     if (_act->didHit()) {
00222         dist = _act->getHitT();
00223         if (dist >= _height) {
00224             rFrom = rFrom + (_groundDistance-dist+_height)*upn;
00225             rAt = rAt + (_groundDistance-dist+_height)*upn;
00226         }
00227         else return 0.0;    //can't jump so high
00228     }
00229 
00230     //finally check if the move is correct or not
00231 
00232     line.setValue(_rFrom, sv);
00233     _act->setLine(line);
00234     _act->apply(_world);
00235 
00236     if (_act->didHit()) {
00237         dist = _act->getHitT();
00238         if (dist <= (rFrom-_rFrom).length()+_fatness+_wallDistance)
00239             return 0.0;     //running against a wall
00240     }
00241 
00242     //move was ok, store new values
00243     _rFrom = rFrom;
00244     _rAt = rAt;
00245     return step;
00246 }

Matrix & FlyNavigator::getMatrix (  void   )  [inherited]
 

Get the current transformation matrix.

Definition at line 102 of file OSGFlyNavigator.cpp.

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

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

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

Pnt3f & FlyNavigator::getFrom (  void   )  [inherited]
 

Get the from point.

Definition at line 110 of file OSGFlyNavigator.cpp.

References osg::FlyNavigator::_rFrom.

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

00111 {
00112     return _rFrom;
00113 }

Pnt3f & FlyNavigator::getAt (  void   )  [inherited]
 

Get the at point.

Definition at line 117 of file OSGFlyNavigator.cpp.

References osg::FlyNavigator::_rAt.

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

00118 {
00119     return _rAt;
00120 }

Vec3f & FlyNavigator::getUp (  void   )  [inherited]
 

Get the up vector.

Definition at line 124 of file OSGFlyNavigator.cpp.

References osg::FlyNavigator::_vUp.

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

00125 {
00126     return _vUp;
00127 }

void FlyNavigator::setFrom (  Pnt3f  new_from  )  [inherited]
 

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 osg::FlyNavigator::_rFrom.

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

00136 {
00137     _rFrom=new_from;
00138 }

void FlyNavigator::setAt (  Pnt3f  new_At  )  [inherited]
 

Sets the target point at which the viewer is looking.

Definition at line 142 of file OSGFlyNavigator.cpp.

References osg::FlyNavigator::_rAt.

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

00143 {
00144     _rAt=new_At;
00145 }

void FlyNavigator::setUp (  Vec3f  new_up  )  [inherited]
 

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

Definition at line 149 of file OSGFlyNavigator.cpp.

References osg::FlyNavigator::_vUp.

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

00150 {
00151     _vUp=new_up;
00152 }

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

Set the position and the orientation at once.

Definition at line 156 of file OSGFlyNavigator.cpp.

References osg::FlyNavigator::_rAt, osg::FlyNavigator::_rFrom, and osg::FlyNavigator::_vUp.

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

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

void FlyNavigator::set (  Matrix  new_matrix  )  [inherited]
 

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

Definition at line 165 of file OSGFlyNavigator.cpp.

References osg::FlyNavigator::_rAt, osg::FlyNavigator::_rFrom, osg::FlyNavigator::_vUp, and osg::FlyNavigator::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 }

Member Data Documentation

* NodePtr osg::WalkNavigator::_ground [private]
 

Definition at line 101 of file OSGWalkNavigator.h.

Referenced by forward(), right(), and setGround().

NodePtr osg::WalkNavigator::_world [private]
 

Definition at line 102 of file OSGWalkNavigator.h.

Referenced by forward(), right(), and setWorld().

Real32 osg::WalkNavigator::_groundDistance [private]
 

Definition at line 104 of file OSGWalkNavigator.h.

Referenced by forward(), right(), and setGroundDistance().

Real32 osg::WalkNavigator::_wallDistance [private]
 

Definition at line 105 of file OSGWalkNavigator.h.

Referenced by forward(), right(), and setMinWallDistance().

Real32 osg::WalkNavigator::_height [private]
 

Definition at line 106 of file OSGWalkNavigator.h.

Referenced by forward(), right(), and setPersonDimensions().

Real32 osg::WalkNavigator::_width [private]
 

Definition at line 107 of file OSGWalkNavigator.h.

Referenced by setPersonDimensions().

Real32 osg::WalkNavigator::_fatness [private]
 

Definition at line 108 of file OSGWalkNavigator.h.

Referenced by forward(), right(), and setPersonDimensions().

IntersectAction* osg::WalkNavigator::_act [private]
 

Definition at line 110 of file OSGWalkNavigator.h.

Referenced by forward(), right(), WalkNavigator(), and ~WalkNavigator().

osg::FlyNavigator::_rFrom [protected, inherited]
 

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

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

osg::FlyNavigator::_rAt [protected, inherited]
 

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

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

osg::FlyNavigator::_vUp [protected, inherited]
 

The up vector.

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

osg::FlyNavigator::_tMatrix [protected, inherited]
 

The transformation matrix for this navigator.

Referenced by osg::FlyNavigator::FlyNavigator(), and osg::FlyNavigator::getMatrix().

The documentation for this class was generated from the following files:
Generated on Thu Aug 25 04:27:45 2005 for OpenSG by  doxygen 1.4.3