FGGroundCallback Class Reference

Detailed Description

This class provides callback slots to get ground specific data.

The default implementation returns values for a ball formed earth with an adjustable terrain elevation.

Author

Mathias Froehlich

Definition at line 62 of file FGGroundCallback.h.

#include <FGGroundCallback.h>

Inheritance diagram for FGGroundCallback:

Public Member Functions
virtual double	GetAGLevel (const FGLocation &location, FGLocation &contact, FGColumnVector3 &normal, FGColumnVector3 &v, FGColumnVector3 &w) const
	Compute the altitude above ground.
virtual double	GetAGLevel (double t, const FGLocation &location, FGLocation &contact, FGColumnVector3 &normal, FGColumnVector3 &v, FGColumnVector3 &w) const =0
	Compute the altitude above ground.
virtual void	SetEllipse (double semimajor, double semiminor)
	Set the planet semimajor and semiminor axes.
virtual void	SetTerrainElevation (double h)
	Set the terrain elevation.
void	SetTime (double _time)
	Set the simulation time.

Protected Attributes
double	time

Constructor & Destructor Documentation

FGGroundCallback()

FGGroundCallback ( )

inline

Definition at line 66 of file FGGroundCallback.h.

: time(0.0) {}

~FGGroundCallback()

virtual ~FGGroundCallback ( )

inlinevirtual

Definition at line 67 of file FGGroundCallback.h.

{}

Member Function Documentation

GetAGLevel() [1/2]

virtual double GetAGLevel ( const FGLocation &  location, FGLocation &  contact, FGColumnVector3 &  normal, FGColumnVector3 &  v, FGColumnVector3 &  w  ) const

inlinevirtual

Compute the altitude above ground.

The altitude depends on location l.

Parameters

l	location
contact	Contact point location below the location l
normal	Normal vector at the contact point
v	Linear velocity at the contact point
w	Angular velocity at the contact point

Returns

altitude above ground

Definition at line 93 of file FGGroundCallback.h.

  { return GetAGLevel(time, location, contact, normal, v, w); }

GetAGLevel() [2/2]

virtual double GetAGLevel ( double  t, const FGLocation &  location, FGLocation &  contact, FGColumnVector3 &  normal, FGColumnVector3 &  v, FGColumnVector3 &  w  ) const

pure virtual

Compute the altitude above ground.

The altitude depends on time t and location l.

Parameters

t	simulation time
l	location
contact	Contact point location below the location l
normal	Normal vector at the contact point
v	Linear velocity at the contact point
w	Angular velocity at the contact point

Returns

altitude above ground

Implemented in FGDefaultGroundCallback.

SetEllipse()

virtual void SetEllipse ( double  semimajor, double  semiminor  )

inlinevirtual

Set the planet semimajor and semiminor axes.

Only needs to be implemented if JSBSim should be allowed to modify the planet dimensions.

Reimplemented in FGDefaultGroundCallback.

Definition at line 108 of file FGGroundCallback.h.

{}

SetTerrainElevation()

virtual void SetTerrainElevation ( double  h )

inlinevirtual

Set the terrain elevation.

Only needs to be implemented if JSBSim should be allowed to modify the local terrain radius (see the default implementation)

Reimplemented in FGDefaultGroundCallback.

Definition at line 102 of file FGGroundCallback.h.

{}

SetTime()

void SetTime ( double  _time )

inline

Set the simulation time.

The elapsed time can be used by the ground callback to assess the planet rotation or the movement of objects.

Parameters

_time

elapsed time in seconds since the simulation started.

Definition at line 115 of file FGGroundCallback.h.

{ time = _time; }

Member Data Documentation

time

double time

protected

Definition at line 118 of file FGGroundCallback.h.

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The documentation for this class was generated from the following file:

• FGGroundCallback.h