Seed points using a grid. More...

#include <LimitPolygonSeeder.h>

Inheritance diagram for Isis::LimitPolygonSeeder:

Collaboration diagram for Isis::LimitPolygonSeeder:

Public Member Functions
	LimitPolygonSeeder (Pvl &pvl)
	Construct a LimitPolygonSeeder algorithm.

virtual	~LimitPolygonSeeder ()
	Destructor.

std::vector< geos::geom::Point * >	Seed (const geos::geom::MultiPolygon *mp)
	Seed a polygon with points.

virtual PvlGroup	PluginParameters (QString grpName)
	Plugin parameters.

double	MinimumThickness ()
	Return the minimum allowed thickness of the polygon.

double	MinimumArea ()
	Return the minimum allowed area of the polygon.

QString	Algorithm () const
	The name of the algorithm, read from the Name Keyword in the PolygonSeeder Pvl passed into the constructor.

Pvl	InvalidInput ()
	This method returns a copy of the Pvl passed in by the constructor (from a def file probably) minus what was used.

Protected Member Functions
virtual void	Parse (Pvl &pvl)
	Parse the LimitPolygonSeeder spicific parameters from the PVL.

QString	StandardTests (const geos::geom::MultiPolygon multiPoly, const geos::geom::Envelope polyBoundBox)
	Check the polygon to see if it meets standard criteria.

Protected Attributes
Pvl *	invalidInput
	The Pvl passed in by the constructor minus what was used.

Private Member Functions
geos::geom::Geometry *	GetMultiPolygon (double dMinX, double dMinY, double dMaxX, double dMaxY, const geos::geom::MultiPolygon &orig)
	This method returns the overlap between the x/y range specified and the "orig" polygon.

Private Attributes
int	p_majorAxisPts
	Number of points to place on major axis.

int	p_minorAxisPts
	Number of points to place on minor axis.

Detailed Description

Seed points using a grid.

This class seeds the polygons with Control Points by creating a grid centered on the polygon. For each grid square, if it contains any overlap, a box is then created within the grid square, surrounding the valid data. The point checked is the center of this box, and if this point is within the overlap polygon then this point is returned, otherwise the grid square does not have a point.

Author: 2008-04-21 Steven Lambright

History:

2008-08-18 Christopher Austin - Upgraded to geos3.0.0

2008-11-12 Steven Lambright - Fixed documentation

2008-11-25 Steven Lambright - Added error checking

2008-12-23 Steven Lambright - Fixed problem with finding points in polygons that caused this algorithm to miss some.

2009-08-05 Travis Addair - Encapsulated group creation for seed definition group

2010-04-15 Eric Hyer - Now updates parent's invalidInput variable

2010-04-20 Christopher Austin - adapted for generic/unitless seeding

Definition at line 62 of file LimitPolygonSeeder.h.

Constructor & Destructor Documentation

Isis::LimitPolygonSeeder::LimitPolygonSeeder ( Pvl & pvl )

Construct a LimitPolygonSeeder algorithm.

Parameters

pvl	A Pvl object that contains a valid polygon point seeding definition

Definition at line 46 of file LimitPolygonSeeder.cpp.

References Parse().

virtual Isis::LimitPolygonSeeder::~LimitPolygonSeeder ( )

inlinevirtual

Destructor.

Definition at line 67 of file LimitPolygonSeeder.h.

Member Function Documentation

QString Isis::PolygonSeeder::Algorithm ( ) const

inherited

The name of the algorithm, read from the Name Keyword in the PolygonSeeder Pvl passed into the constructor.

Returns: QString The value of the Name Keyword in the Pvl.

Definition at line 166 of file PolygonSeeder.cpp.

References Isis::PolygonSeeder::p_algorithmName.

Referenced by PluginParameters(), Isis::GridPolygonSeeder::PluginParameters(), and Isis::StripPolygonSeeder::PluginParameters().

geos::geom::Geometry * Isis::LimitPolygonSeeder::GetMultiPolygon	(	double	dMinX,
		double	dMinY,
		double	dMaxX,
		double	dMaxY,
		const geos::geom::MultiPolygon &	orig
	)

private

This method returns the overlap between the x/y range specified and the "orig" polygon.

This is used to get polygons that represent the overlap polygons in individual grid squares.

Parameters

dMinX	Left side of rectangle
dMinY	Bottom side of rectangle
dMaxX	Right side of rectangle
dMaxY	Top side of the rectangle
orig	Multiplygon to intersect the square with

Returns: geos::geom::Geometry* The portion of "orig" that intersects the square

Definition at line 137 of file LimitPolygonSeeder.cpp.

Referenced by Seed().

Pvl Isis::PolygonSeeder::InvalidInput ( )

inherited

This method returns a copy of the Pvl passed in by the constructor (from a def file probably) minus what was used.

Returns: Pvl A copy of this pvl minus what was used.

Definition at line 225 of file PolygonSeeder.cpp.

References Isis::PolygonSeeder::invalidInput.

double Isis::PolygonSeeder::MinimumArea ( )

inherited

Return the minimum allowed area of the polygon.

This value is set from the "MinimumArea" keyword in the PVL. The seeding algorithm will not seed polygons that have an area less than this.

Returns: double The value for the minimum area allowed.

Definition at line 189 of file PolygonSeeder.cpp.

References Isis::PolygonSeeder::p_minimumArea.

Referenced by PluginParameters(), Isis::StripPolygonSeeder::PluginParameters(), Isis::GridPolygonSeeder::PluginParameters(), and Isis::PolygonSeeder::StandardTests().

double Isis::PolygonSeeder::MinimumThickness ( )

inherited

Return the minimum allowed thickness of the polygon.

This value is set from the "MinimumThickness" keyword in the PVL. The seeding algorithm will not seed polygons that have a thickness ratio less than this

Returns: double The value for the minimum thickness allowed.

Definition at line 177 of file PolygonSeeder.cpp.

References Isis::PolygonSeeder::p_minimumThickness.

Referenced by PluginParameters(), Isis::StripPolygonSeeder::PluginParameters(), Isis::GridPolygonSeeder::PluginParameters(), Isis::GridPolygonSeeder::SeedSubGrid(), and Isis::PolygonSeeder::StandardTests().

void Isis::LimitPolygonSeeder::Parse ( Pvl & pvl )

protectedvirtual

Parse the LimitPolygonSeeder spicific parameters from the PVL.

Parameters

pvl	The PVL object containing the control parameters for this polygon seeder.

Reimplemented from Isis::PolygonSeeder.

Definition at line 160 of file LimitPolygonSeeder.cpp.

References _FILEINFO_, Isis::PvlContainer::deleteKeyword(), Isis::PvlContainer::fileName(), Isis::PvlObject::findGroup(), Isis::PvlContainer::hasKeyword(), Isis::PolygonSeeder::invalidInput, p_majorAxisPts, p_minorAxisPts, Isis::PolygonSeeder::Parse(), Isis::PvlObject::Traverse, and Isis::IException::User.

Referenced by LimitPolygonSeeder().

PvlGroup Isis::LimitPolygonSeeder::PluginParameters ( QString grpName )

virtual

Plugin parameters.

This method will add the PvlKeyword values for algorithm name, minimum thickness, and minimum area of this object to a PvlGroup with the name that is passed in.

Parameters

grpName A string containing the PvlGroup name.

Returns: PvlGroup The PvlGroup with the appropriate parameters added.

Reimplemented from Isis::PolygonSeeder.

Definition at line 214 of file LimitPolygonSeeder.cpp.

References Isis::PvlContainer::addKeyword(), Isis::PolygonSeeder::Algorithm(), Isis::PolygonSeeder::MinimumArea(), Isis::PolygonSeeder::MinimumThickness(), p_majorAxisPts, p_minorAxisPts, and Isis::toString().

std::vector< geos::geom::Point * > Isis::LimitPolygonSeeder::Seed ( const geos::geom::MultiPolygon * multiPoly )

virtual

Seed a polygon with points.

Seed the supplied polygon with points in a staggered pattern. The spacing is determined by the PVL group "PolygonSeederAlgorithm"

Parameters

lonLatPoly geos::MultiPolygon The polygon to be seeded with points.

Returns: std::vector<geos::Point*> A vector of points which have been seeded into the polygon. The caller assumes responsibility for deleteing these.

Implements Isis::PolygonSeeder.

Definition at line 63 of file LimitPolygonSeeder.cpp.

References GetMultiPolygon(), p_majorAxisPts, p_minorAxisPts, and Isis::PolygonSeeder::StandardTests().

QString Isis::PolygonSeeder::StandardTests	(	const geos::geom::MultiPolygon *	xymp,
		const geos::geom::Envelope *	xyBoundBox
	)

protectedinherited

Check the polygon to see if it meets standard criteria.

Parameters

xymp	The multipoly containing the coordinates in x/y units instead of lon/lat
xyBoundBox	The bounding box of the multipoly

Returns: QString A string with an appropriate message to throw if a test was unsuccessful or an empty string if all tests passed.

Definition at line 140 of file PolygonSeeder.cpp.

References Isis::PolygonSeeder::MinimumArea(), Isis::PolygonSeeder::MinimumThickness(), and Isis::toString().

Referenced by Seed(), Isis::StripPolygonSeeder::Seed(), and Isis::GridPolygonSeeder::SeedSubGrid().

Member Data Documentation

Pvl* Isis::PolygonSeeder::invalidInput

protectedinherited

The Pvl passed in by the constructor minus what

was used.

Definition at line 93 of file PolygonSeeder.h.

Referenced by Isis::PolygonSeeder::InvalidInput(), Parse(), Isis::StripPolygonSeeder::Parse(), Isis::GridPolygonSeeder::Parse(), Isis::PolygonSeeder::Parse(), Isis::PolygonSeeder::PolygonSeeder(), and Isis::PolygonSeeder::~PolygonSeeder().

int Isis::LimitPolygonSeeder::p_majorAxisPts

private

Number of points to place on major axis.

Definition at line 80 of file LimitPolygonSeeder.h.

Referenced by Parse(), PluginParameters(), and Seed().

int Isis::LimitPolygonSeeder::p_minorAxisPts

private

Number of points to place on minor axis.

Definition at line 81 of file LimitPolygonSeeder.h.

Referenced by Parse(), PluginParameters(), and Seed().

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

src/base/objs/LimitPolygonSeeder/LimitPolygonSeeder.h
src/base/objs/LimitPolygonSeeder/LimitPolygonSeeder.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation