geos::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 GeometryFactory *factory)
	Create a shape factory which will create shapes using the given GeometryFactory.
LineString *	createArc (double startAng, double endAng)
	Creates a elliptical arc, as a LineString.
Polygon *	createCircle ()
	Creates a circular Polygon.
Polygon *	createRectangle ()
	Creates a rectangular Polygon.
void	setBase (const 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 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::GeometricShapeFactory::GeometricShapeFactory (  const 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

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

Creates a elliptical arc, as a LineString. Returns: an elliptical arc

Polygon * geos::GeometricShapeFactory::createCircle (   )

Creates a circular Polygon. Returns: a circle

Polygon * geos::GeometricShapeFactory::createRectangle (   )

Creates a rectangular Polygon. Returns: a rectangular Polygon

void geos::GeometricShapeFactory::setBase (  const 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::GeometricShapeFactory::setCentre (  const 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::GeometricShapeFactory::setHeight (  double  height  )

Sets the height of the shape. Parameters: height  the height of the shape

void geos::GeometricShapeFactory::setNumPoints (  int  nNPts  )

Sets the total number of points in the created Geometry. Sets the total number of points in the created Geometry

void geos::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::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 files:

• util.h
• GeometricShapeFactory.cpp

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