geos::util::GeometricShapeFactory Class Reference

Computes various kinds of common geometric shapes. Allows various ways of specifying the location and extent of the shapes, as well as number of line segments used to form them. More...

#include <geos.h>

List of all members.

Public Member Functions
	GeometricShapeFactory (const geom::GeometryFactory *factory)
	Create a shape factory which will create shapes using the given GeometryFactory.
geom::LineString *	createArc (double startAng, double endAng)
	Creates a elliptical arc, as a LineString.
geom::Polygon *	createCircle ()
	Creates a circular Polygon.
geom::Polygon *	createRectangle ()
	Creates a rectangular Polygon.
void	setBase (const geom::Coordinate &base)
	Sets the location of the shape by specifying the base coordinate (which in most cases is the * lower left point of the envelope containing the shape).
void	setCentre (const geom::Coordinate &centre)
	Sets the location of the shape by specifying the centre of the shape's bounding box.
void	setHeight (double height)
	Sets the height of the shape.
void	setNumPoints (int nNPts)
	Sets the total number of points in the created Geometry.
void	setSize (double size)
	Sets the size of the extent of the shape in both x and y directions.
void	setWidth (double width)
	Sets the width of the shape.

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Detailed Description

Computes various kinds of common geometric shapes. Allows various ways of specifying the location and extent of the shapes, as well as number of line segments used to form them.

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Constructor & Destructor Documentation

geos::util::GeometricShapeFactory::GeometricShapeFactory

(

const geom::GeometryFactory *

factory

)

Create a shape factory which will create shapes using the given GeometryFactory.

Parameters:

factory

the factory to use. You need to keep the factory alive for the whole GeometricShapeFactory life time.

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Member Function Documentation

geom::LineString* geos::util::GeometricShapeFactory::createArc	(	double	startAng,
		double	endAng
	)

Creates a elliptical arc, as a LineString.

Returns:

an elliptical arc

geom::Polygon* geos::util::GeometricShapeFactory::createCircle

(

)

Creates a circular Polygon.

Returns:

a circle

geom::Polygon* geos::util::GeometricShapeFactory::createRectangle

(

)

Creates a rectangular Polygon.

Returns:

a rectangular Polygon

void geos::util::GeometricShapeFactory::setBase

(

const geom::Coordinate &

base

)

Sets the location of the shape by specifying the base coordinate (which in most cases is the * lower left point of the envelope containing the shape).

Parameters:

base

the base coordinate of the shape

void geos::util::GeometricShapeFactory::setCentre

(

const geom::Coordinate &

centre

)

Sets the location of the shape by specifying the centre of the shape's bounding box.

Parameters:

centre

the centre coordinate of the shape

void geos::util::GeometricShapeFactory::setHeight

(

double

height

)

Sets the height of the shape.

Parameters:

height

the height of the shape

void geos::util::GeometricShapeFactory::setSize

(

double

size

)

Sets the size of the extent of the shape in both x and y directions.

Parameters:

size

the size of the shape's extent

void geos::util::GeometricShapeFactory::setWidth

(

double

width

)

Sets the width of the shape.

Parameters:

width

the width of the shape

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

• GeometricShapeFactory.h