IlvMapLinearSegment Class Reference

This class defines a linear segment. More...

#include <ilviews/maps/geometry/geolineseg.h>

Inheritance diagram for IlvMapLinearSegment:

Public Member Functions
	IlvMapLinearSegment ()
	Initializes a new IlvMapLinearSegment instance.
	IlvMapLinearSegment (const IlvCoordinate &start, const IlvCoordinate &end)
	Initializes a new linear segment by specifying the start and end point. More...
	IlvMapLinearSegment (const IlvMapLinearSegment &source)
	Initializes a new linear segment by copying an existing one. More...
virtual IlvMapGeometry *	copy () const
	Returns a copy of the object. More...
virtual IlvClassInfo *	getClassInfo () const
	Returns the IlvClassInfo of the instance. More...
virtual const IlvCoordinate &	getEndPoint () const
	Returns the end point of the segment. More...
virtual IlUInt	getHorizontalIntersectionCount (const IlvCoordinate &) const
	Returns the number of intersections between this segment and an horizontal half line. More...
virtual const IlvCoordinate &	getStartPoint () const
	Returns the start point of the segment. More...
virtual const IlvMapGeometry *	getSubElement (IlUInt) const
	Returns a sub element of a collection geometry. More...
virtual IlUInt	getSubElementCount () const
	Returns the number of elements contained in the geometry if the geometry is a collection. More...
virtual IlBoolean	isCollection () const
	Checks if this geometry is a collection of other geometries. More...
virtual void	setEndPoint (const IlvCoordinate &)
	Sets the end point of the segment. More...
virtual void	setStartPoint (const IlvCoordinate &)
	Sets the start point of the segment. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvMapGeometry
static IlvClassInfo *	ClassInfo ()
	Returns the class info. More...
Protected Member Functions inherited from IlvMapSegment
	IlvMapSegment ()
	Initializes a new IlvMapSegment instance.
Protected Member Functions inherited from IlvMapCurve
	IlvMapCurve ()
	Initializes a new, empty, curve.
Protected Member Functions inherited from IlvMapGeometry
	IlvMapGeometry ()
	Constructor. More...

Detailed Description

This class defines a linear segment.

Library: ilvmaps
The instances of this class can be rendered by an IlvDefaultFeatureRenderer or by an IlvDefaultCurveRenderer.

Constructor & Destructor Documentation

IlvMapLinearSegment() [1/2]

IlvMapLinearSegment::IlvMapLinearSegment	(	const IlvCoordinate &	start,
		const IlvCoordinate &	end
	)

Initializes a new linear segment by specifying the start and end point.

Parameters

start	The start point.
end	The end point.

IlvMapLinearSegment() [2/2]

IlvMapLinearSegment::IlvMapLinearSegment

(

const IlvMapLinearSegment &

source

)

Initializes a new linear segment by copying an existing one.

Parameters

source

The source linear segment.

Member Function Documentation

copy()

virtual IlvMapGeometry* IlvMapLinearSegment::copy ( ) const

virtual

Returns a copy of the object.

Returns

An IlvMapGeometry that must be deleted by the user.

Implements IlvMapSegment.

getClassInfo()

virtual IlvClassInfo* IlvMapLinearSegment::getClassInfo ( ) const

virtual

Returns the IlvClassInfo of the instance.

Returns

An IlvClassInfo that should not be modified nor deleted.

Implements IlvMapCurve.

getEndPoint()

virtual const IlvCoordinate& IlvMapLinearSegment::getEndPoint ( ) const

virtual

Returns the end point of the segment.

Returns

The end point.

Implements IlvMapSegment.

getHorizontalIntersectionCount()

virtual IlUInt IlvMapLinearSegment::getHorizontalIntersectionCount ( const IlvCoordinate &  point ) const

virtual

Returns the number of intersections between this segment and an horizontal half line.

This function is used for point inclusion tests of IlvMapRing.

Parameters

point

The point at the right end of the horizontal half line.

Returns

The number of intersections between the point and this segment. Tangent intersections should be counted as: 1 if the point is on the segment, 2 if the point is not on the segment. If the point is on the segment where the tangent is not horizontal, the intersection should not be counted.

Implements IlvMapSegment.

getStartPoint()

virtual const IlvCoordinate& IlvMapLinearSegment::getStartPoint ( ) const

virtual

Returns the start point of the segment.

Returns

The start point.

Implements IlvMapSegment.

getSubElement()

virtual const IlvMapGeometry* IlvMapLinearSegment::getSubElement ( IlUInt  index ) const

virtual

Returns a sub element of a collection geometry.

Parameters

index

The index of the sub-geometry to be retrieved.

Returns

The sub element of index index if the geometry is a collection or 0 if it is not.

Implements IlvMapGeometry.

getSubElementCount()

virtual IlUInt IlvMapLinearSegment::getSubElementCount ( ) const

virtual

Returns the number of elements contained in the geometry if the geometry is a collection.

Returns

The number of elements contained in the geometry if the geometry is a collection. If it is not, this method returns 0.

Implements IlvMapGeometry.

isCollection()

virtual IlBoolean IlvMapLinearSegment::isCollection ( ) const

virtual

Checks if this geometry is a collection of other geometries.

The composite geometries predefined in Rogue Wave Views Maps are: IlvMapGeometryCollection, IlvMapMultiPoint, IlvMapSegmentString and its subclasses, IlvMapMultiCurve and IlvMapMultiArea.

Returns

IlTrue if the geometry is a collection of other geometries.

Implements IlvMapGeometry.

setEndPoint()

virtual void IlvMapLinearSegment::setEndPoint ( const IlvCoordinate &  end )

virtual

Sets the end point of the segment.

Parameters

end	The end point.

Implements IlvMapSegment.

setStartPoint()

virtual void IlvMapLinearSegment::setStartPoint ( const IlvCoordinate &  start )

virtual

Sets the start point of the segment.

Parameters

start

The start point.

Implements IlvMapSegment.