Curve Class Reference

A Curve Geometry, implemented to fullfil OGC Spec. More...

#include <curve.h>

Inheritance diagram for Curve:

List of all members.

Public Slots
virtual void	setVisible (bool visible)
	if visible is true, the layer is made visible
Signals
void	geometryClicked (Geometry *geometry, QPoint point)
	This signal is emitted when a Geometry is clicked.
void	positionChanged (Geometry *geom)
	A Geometry emits this signal, when its position gets changed.
Public Member Functions
virtual QRectF	boundingBox ()=0
	returns the BoundingBox
bool	Equals (Geometry *geom)
bool	isVisible () const
	returns true if this Geometry is visible
QString	name () const
	returns the name of this Geometry
Geometry *	parentGeometry () const
	returns the parent Geometry of this Geometry
QPen *	pen () const
	returns the QPen which is used on drawing
void	setName (QString name)
	sets the name of the geometry
QString	toString ()
	returns a String representation of this Geometry

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Detailed Description

A Curve Geometry, implemented to fullfil OGC Spec.

The Curve class is used by LineString as parent class. This class could not be used directly.

From the OGC Candidate Implementation Specification: "A Curve is a 1-dimensional geometric object usually stored as a sequence of Points, with the subtype of Curve specifying the form of the interpolation between Points. This specification defines only one subclass of Curve, LineString, which uses a linear interpolation between Points."

Author:

Kai Winter <kaiwinter@gmx.de>

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Member Function Documentation

virtual QRectF boundingBox

(

)

[pure virtual, inherited]

returns the BoundingBox

The bounding box in world coordinates

Returns:

the BoundingBox

Implemented in LineString, and Point.

Referenced by Layer::addGeometry(), and Geometry::setVisible().

bool Equals

(

Geometry *

geom

)

[inherited]

returns true if the given Geometry is equal to this Geometry not implemented yet!

Parameters:

geom

The Geometry to be tested

Returns:

true if the given Geometry is equal to this

void geometryClicked	(	Geometry *	geometry,
		QPoint	point
	)			[signal, inherited]

This signal is emitted when a Geometry is clicked.

A Geometry is clickable, if the containing layer is clickable. The objects emits a signal if it gets clicked

Parameters:

	geometry	The clicked Geometry
	point	-unused-

Referenced by Point::Touches().

bool isVisible

(

)

const [inherited]

returns true if this Geometry is visible

Returns:

true if this Geometry is visible

Referenced by Point::Touches().

QString name

(

)

const [inherited]

returns the name of this Geometry

Returns:

the name of this Geometry

Geometry * parentGeometry

(

)

const [inherited]

returns the parent Geometry of this Geometry

A LineString is a composition of many Points. This methods returns the parent (the LineString) of a Point

Returns:

the parent Geometry of this Geometry

QPen * pen

(

)

const [inherited]

returns the QPen which is used on drawing

The pen is set depending on the Geometry. A CirclePoint for example takes one with the constructor.

Returns:

the QPen which is used for drawing

void positionChanged

(

Geometry *

geom

)

[signal, inherited]

A Geometry emits this signal, when its position gets changed.

Parameters:

geom

the Geometry

void setName

(

QString

name

)

[inherited]

sets the name of the geometry

Parameters:

name

the new name of the geometry

void setVisible

(

bool

visible

)

[virtual, slot, inherited]

if visible is true, the layer is made visible

Parameters:

visible

if the layer should be visible

Reimplemented in Point.

References Geometry::boundingBox().

QString toString

(

)

[inherited]

returns a String representation of this Geometry

not implemented yet!

Returns:

a String representation of this Geometry

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

• curve.h
• curve.cpp