Phx::Terrain::HeightInterface Class Reference

An interface allowing repeated queries of height for a moving position. More...

#include <PhxTerrain.h>

List of all members.

Public Member Functions
virtual	position (const EcefVector &position)=0
EcefVector	position (void) const
double	slewRate (void) const
virtual void	slewRate (double rate)=0
virtual double	heightAgl (void) const =0
	Returns the height of the query position above ground level.
virtual double	heightMsl (void) const =0
	Returns the height of the query point above mean sea level.
virtual double	resolution (void) const
virtual void	resolution (double resolution)=0
Protected Member Functions
void	setPosition (const EcefVector &position)
void	setSlewRate (double rate)

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Detailed Description

An interface allowing repeated queries of height for a moving position.

The interface provides a maximum slew rate attribute that prevents the height from popping by more than a specified amount for each unit of time (simulated second). If the terrain is simplified or refined, the height of the surface may change, causing difficulties for some parts of the simulation. This interface interpolates gradually from the old height to the new height, allowing the client to view the terrain as gradually rising up or descending beneath them, rather than suddenly popping to a new location.

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Member Function Documentation

virtual double Phx::Terrain::HeightInterface::heightAgl (  void   )  const [pure virtual]

Returns the height of the query position above ground level. Ground level is the surface of the terrain geometry directly "beneath" the query position.

virtual double Phx::Terrain::HeightInterface::heightMsl (  void   )  const [pure virtual]

Returns the height of the query point above mean sea level. Presently, mean sea level is defined as the surface of the internal ellipsoid used by the terrain engine (i.e., the surface represented by terrain height of 0 everywhere).

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

• PhxTerrain.h

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