This subclass of IlvMapSegmentString is optimized to handle strings containing only IlvMapLinearSegment instances. More...

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

Inheritance diagram for IlvMapLineString:

Public Member Functions
	IlvMapLineString ()
	Initializes a new `IlvMapLineString` instance and sets the start point to (0, 0).

	IlvMapLineString (const IlvCoordinate &startPoint)
	Initializes a new `IlvMapLineString` instance of the class and specifies the first point of the string. More...

	IlvMapLineString (const IlvMapLineString &source)
	Initializes a new `IlvMapLineString` instance string 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 last segment. More...

virtual IlUInt	getHorizontalIntersectionCount (const IlvCoordinate &) const
	Returns the number of intersections between this segment and an horizontal half line. More...

const IlvMapLinearSegment *	getLinearSegment (IlUInt index) const
	Returns the linear segment at a given. More...

const IlvCoordinate &	getPoint (IlUInt index) const
	Returns the point at a given index in the string. More...

IlUInt	getPointCount () const
	Returns the number of points contained in the string. More...

virtual const IlvMapSegment *	getSegment (IlUInt) const
	Returns the segment at a given index. More...

virtual IlUInt	getSegmentCount () const
	Returns the number of segments contained in the string. More...

virtual const IlvCoordinate &	getStartPoint () const
	Returns the start point of the first segment, if it exists, otherwise, it returns an `IlvCoordinate` set to (0,0). More...

void	lineTo (const IlvCoordinate &end)
	Appends a new linear segment to the string. More...

virtual void	removeAll ()
	Removes all the segments in the string and sets the start point to (0,0).

virtual void	setEndPoint (const IlvCoordinate &)
	Sets the end point of the last segment if it exists. More...

virtual void	setStartPoint (const IlvCoordinate &)
	Sets the start point of the first segment. More...

Public Member Functions inherited from IlvMapSegmentString
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...

Additional Inherited Members
Static Public Member Functions inherited from IlvMapGeometry
static IlvClassInfo *	ClassInfo ()
	Returns the class info. More...

Protected Member Functions inherited from IlvMapSegmentString
	IlvMapSegmentString ()
	Initializes a new `IlvMapSegmentString` instance.

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 subclass of IlvMapSegmentString is optimized to handle strings containing only IlvMapLinearSegment instances.

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

See also: IlvMapCurveString.

Constructor & Destructor Documentation

§ IlvMapLineString() [1/2]

IlvMapLineString::IlvMapLineString ( const IlvCoordinate & startPoint )

Initializes a new IlvMapLineString instance of the class and specifies the first point of the string.

Parameters

startPoint The start point.

§ IlvMapLineString() [2/2]

IlvMapLineString::IlvMapLineString ( const IlvMapLineString & source )

Initializes a new IlvMapLineString instance string by copying an existing one.

Parameters

source The source line string.

Member Function Documentation

§ copy()

virtual IlvMapGeometry* IlvMapLineString::copy ( ) const

virtual

Returns a copy of the object.

Returns: An IlvMapGeometry that must be deleted by the user.

Implements IlvMapSegmentString.

§ getClassInfo()

virtual IlvClassInfo* IlvMapLineString::getClassInfo ( ) const

virtual

Returns the IlvClassInfo of the instance.

Returns: An IlvClassInfo that should not be modified nor deleted.

Implements IlvMapSegmentString.

§ getEndPoint()

virtual const IlvCoordinate& IlvMapLineString::getEndPoint ( ) const

virtual

Returns the end point of the last segment.

Returns: The end point. If there is no end point, the point (0, 0) is returned.

Implements IlvMapSegmentString.

§ getHorizontalIntersectionCount()

virtual IlUInt IlvMapLineString::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.

§ getLinearSegment()

const IlvMapLinearSegment* IlvMapLineString::getLinearSegment ( IlUInt index ) const

Returns the linear segment at a given.

Parameters

index The index of the segment to be retrieved. This must have a value between 0 and getSegmentCount() - 1.

Returns: An IlvMapLinearSegment object that should not be modified nor deleted by the user. The returned IlvMapSegment is volatile: it may be modified or deleted by the IlvMapSegmentString istelf after another call to this function, or after any modification.

§ getPoint()

const IlvCoordinate& IlvMapLineString::getPoint ( IlUInt index ) const

Returns the point at a given index in the string.

Parameters

index The index. It must take a value between 0 and getPointCount() - 1.

Returns: The point at location index in the string.

§ getPointCount()

IlUInt IlvMapLineString::getPointCount ( ) const

Returns the number of points contained in the string.

Returns: The number of points contained in the string.

§ getSegment()

virtual const IlvMapSegment* IlvMapLineString::getSegment ( IlUInt index ) const

virtual

Returns the segment at a given index.

Parameters

index The index of the segment to be retrieved. index must have a value between 0 and getSegmentCount()-1.

Returns: An IlvMapSegment object that should not be modified nor deleted by the user. The returned IlvMapSegment is volatile: it may be modified or deleted by the IlvMapSegmentString itself after an other call to this function, or after any modification.

Implements IlvMapSegmentString.

§ getSegmentCount()

virtual IlUInt IlvMapLineString::getSegmentCount ( ) const

virtual

Returns the number of segments contained in the string.

Returns: The number of segments.

Implements IlvMapSegmentString.

§ getStartPoint()

virtual const IlvCoordinate& IlvMapLineString::getStartPoint ( ) const

virtual

Returns the start point of the first segment, if it exists, otherwise, it returns an IlvCoordinate set to (0,0).

Returns: The start point.

Implements IlvMapSegmentString.

§ lineTo()

void IlvMapLineString::lineTo ( const IlvCoordinate & end )

Appends a new linear segment to the string.

Parameters

end	The coordinate of the end of the new segment.

§ setEndPoint()

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

virtual

Sets the end point of the last segment if it exists.

If the end point of the last segment does not exists, this method does nothing.

Parameters

end	The end point.

Implements IlvMapSegmentString.

§ setStartPoint()

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

virtual

Sets the start point of the first segment.

Parameters

start The start point.

Implements IlvMapSegmentString.

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

§ IlvMapLineString() [1/2]

§ IlvMapLineString() [2/2]

Member Function Documentation

§ copy()

§ getClassInfo()

§ getEndPoint()

§ getHorizontalIntersectionCount()

§ getLinearSegment()

§ getPoint()

§ getPointCount()

§ getSegment()

§ getSegmentCount()

§ getStartPoint()

§ lineTo()

§ setEndPoint()

§ setStartPoint()