DtVisualSignaturePropagator Class Reference

Signature propagator used in the visual sensor domain. More...

Inheritance diagram for DtVisualSignaturePropagator:

Public Member Functions
	DtVisualSignaturePropagator (const DtSignaturePropagatorDescriptor *desc, DtPhysicalWorld *physicalWorld)
	default constructor
virtual	~DtVisualSignaturePropagator ()
	destructor
virtual void	init ()
	Assigns myVisualPropagatorDescriptor by casting the result of descriptor().
virtual double	calculateApparentSignature (double absoluteSignature, const DtSignaturePropagatorArgs &args) const
	Takes the given absolute signature and applies to it the effects of the environmental visibility range as well as the terrain line of sight.
virtual double	calculateSmokeReductionFactor (double apparentSignature, const DtVector &databaseStartPoint, const DtVector &databaseEndPoint) const
	Will look for any smoke intersections between sensor and object If found will reduce the apparent signature further.
Public Member Functions inherited from DtStandardSignaturePropagator
	DtStandardSignaturePropagator (const DtSignaturePropagatorDescriptor *desc, DtPhysicalWorld *physicalWorld)
	default constructor
virtual	~DtStandardSignaturePropagator ()
	destructor
Public Member Functions inherited from DtSignaturePropagator
	DtSignaturePropagator (const DtSignaturePropagatorDescriptor *descriptor, DtPhysicalWorld *physicalWorld)
virtual	~DtSignaturePropagator ()
	destructor
virtual const DtSignaturePropagatorDescriptor *	descriptor () const
virtual const DtPhysicalWorld *	physicalWorld () const

Static Public Member Functions
static DtSignaturePropagator *	create (const DtSignaturePropagatorDescriptor *desc, DtPhysicalWorld *physicalWorld)
	Creates a new instance of this class, calls init() on it, and returns it.

Protected Member Functions
virtual bool	chordIntersectsPuff (const DtVector &geocStartPoint, const DtVector &geocEndPoint, const DtRwGaussianPuffData &puff, DtVector &intersectPoint, DtChord &intersectSegment) const
	Given a chord and a puff, determine the intersection.
Protected Member Functions inherited from DtStandardSignaturePropagator
virtual bool	getViewPoints (const DtSignaturePropagatorArgs &args, std::vector< DtVector > &points) const
	Gets the view points of the viewing object.
virtual bool	getTargetPoints (const DtSignaturePropagatorArgs &args, std::vector< DtVector > &points) const
	Gets the target points of the given object.
virtual void	getTargetPointsAtRange (const DtVector &viewerLoc, const DtVector &targetLoc, double range, bool clampToTerrain, double clampAlt, std::vector< DtVector > &points) const
	Fills the points vector with a collection of locations at the specified range from targetLoc.
virtual bool	viewerAndTargetOverlap (const DtSignaturePropagatorArgs &args) const
	Returns true if the footprints of the viewer and target overlap.
virtual double	getLinearEngineeringObjectsModifier (const DtSignaturePropagatorArgs &args) const
	Returns the signature modifier resulting from any linear engineering objects between the view point and the target point.
void	clampAltitudeToTerrain (const DtVector &targetObjectPosition, double clampAlt, DtVector &location) const
	Set point clampAlt m off ground if data is available - set to clampAlt m above target object's altitude otherwise.
bool	clampViewPoints (const DtVrfObject *object) const
	Returns true if viewpoints for this object should be clamped.

Protected Attributes
const DtVisualSignaturePropagatorDescriptor *	myVisualPropagatorDescriptor
Protected Attributes inherited from DtStandardSignaturePropagator
const DtStandardPropagatorDescriptor *	myStandardPropagatorDescriptor
DtManagedObjectListConstPtr	myEngineeringLineList
Protected Attributes inherited from DtSignaturePropagator
const DtSignaturePropagatorDescriptor *	myDescriptor
DtPhysicalWorld *	myPhysicalWorld

Private Member Functions
	DtVisualSignaturePropagator (const DtVisualSignaturePropagator &orig)
	copy constructor - not implemented
DtVisualSignaturePropagator &	operator= (const DtVisualSignaturePropagator &orig)
	assignment operator - not implemented

Additional Inherited Members
Static Protected Attributes inherited from DtSignaturePropagator
static DtSignaturePropagatorFactory *	theFactory

Detailed Description

Signature propagator used in the visual sensor domain.

This propagator returns an apparent signature based on the absolute signature * 1000 / distance in meters plus any enviromental effects. This means that an apparent signature of 1.0 is observed when the distance from the target in km equals the target's absolute signature. This signature may be degraded further due to the afore mentioned environmental effects like time of day or weather. It checks the DtEnvironmentalStateManager to get the current visibility. Any object beyond this visibility range will return an apparent signature of 0. Inside the visibility range the the object's apparent signature can be reduced further by the optional reduction factor which can be used to take into account low visibility and would make things on the edge of that visibility much harder to see. This propagator also checks for intersections with smoke objects which could further degrade the apparent signature of an object This propagator requires a DtVisualSignaturePropagatorDescriptor descriptor type.

Constructor & Destructor Documentation

DtVisualSignaturePropagator::DtVisualSignaturePropagator	(	const DtSignaturePropagatorDescriptor *	desc,
		DtPhysicalWorld *	physicalWorld
	)

default constructor

virtual DtVisualSignaturePropagator::~DtVisualSignaturePropagator ( )

virtual

destructor

DtVisualSignaturePropagator::DtVisualSignaturePropagator ( const DtVisualSignaturePropagator &  orig )

private

copy constructor - not implemented

Member Function Documentation

virtual void DtVisualSignaturePropagator::init ( )

virtual

Assigns myVisualPropagatorDescriptor by casting the result of descriptor().

Reimplemented from DtStandardSignaturePropagator.

Reimplemented in MySignaturePropagator.

virtual double DtVisualSignaturePropagator::calculateApparentSignature ( double  absoluteSignature, const DtSignaturePropagatorArgs &  args  ) const

virtual

Takes the given absolute signature and applies to it the effects of the environmental visibility range as well as the terrain line of sight.

If the DtPhysicalWorld::checkLineOfSightreports that there is no data available (i.e. it is still being paged in), 0 will be returned.

Reimplemented from DtStandardSignaturePropagator.

Reimplemented in MySignaturePropagator.

virtual double DtVisualSignaturePropagator::calculateSmokeReductionFactor ( double  apparentSignature, const DtVector &  databaseStartPoint, const DtVector &  databaseEndPoint  ) const

virtual

Will look for any smoke intersections between sensor and object If found will reduce the apparent signature further.

static DtSignaturePropagator* DtVisualSignaturePropagator::create ( const DtSignaturePropagatorDescriptor *  desc, DtPhysicalWorld *  physicalWorld  )

static

Creates a new instance of this class, calls init() on it, and returns it.

Reimplemented from DtStandardSignaturePropagator.

Reimplemented in MySignaturePropagator.

virtual bool DtVisualSignaturePropagator::chordIntersectsPuff ( const DtVector &  geocStartPoint, const DtVector &  geocEndPoint, const DtRwGaussianPuffData &  puff, DtVector &  intersectPoint, DtChord &  intersectSegment  ) const

protectedvirtual

Given a chord and a puff, determine the intersection.

DtVisualSignaturePropagator& DtVisualSignaturePropagator::operator= ( const DtVisualSignaturePropagator &  orig )

private

assignment operator - not implemented

Member Data Documentation

const DtVisualSignaturePropagatorDescriptor* DtVisualSignaturePropagator::myVisualPropagatorDescriptor

protected

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

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vrfobjcore/visualSignaturePropagator.h