Inheritance diagram for TSLGeodeticText:

[legend]

Detailed Description

Geodetic Text specific access methods.

This class represents the access methods that are specific to a geodetic text. They also allow setting of the various attributes.

The methods that take a wchar_t should be avoided on non-Windows platforms as the character conversion is platform and potentially compiler specific.

Rendering attributes can be set directly to this geometry using the inherited TSLEntityBase::setRendering method. This is called 'Entity Rendering'.

Rendering can be applied to a large range of geometry using 'Feature Rendering' which is set by the datalayer using TSLDataLayer::addFeatureRendering which creates a featureID. The featureID can then have attributes applied to it using TSLDataLayer::setFeatureRendering.

A featureID can be applied to geometry on creation, or it can be added later using TSLEntityBase::featureID.

Valid Rendering Attributes for TSLGeodeticText:

TSLRenderingAttributeTextColour
TSLRenderingAttributeTextFont
TSLRenderingAttributeTextSizeFactor
TSLRenderingAttributeTextSizeFactorUnits

The above is not a complete list, see TSLRenderingAttributeInt, TSLRenderingAttributeDouble and TSLRenderingAttributeBool for more details.

Known Limitations:

If points or lines pass through or near the poles or the edge of the map, the entity may be drawn incorrectly or even disappear.
If the coordinate system changes (e.g. a new map is loaded), geodetic entities will move themselves on the next draw to preserve lat/lon positions. However, if any TMC data of a geodetic entity are altered before a redraw but after a coord system change, the lat/lon data will be lost. The TMC data can be altered by move(), scale(), rotate() and translate(), and by any control point manipulation or insertion/removal of inners.
Geodetic entities do not fully "exist" until they are drawn, which means that their extents are not known until they are drawn. This can cause issues e.g. if a drawing surface has an undrawn geodetic entity, then its reset() method will zoom out a long way. This can also cause visual artefacts when manipulating interpolated entities; the entire drawing surface should always be redrawn when using them.
Geodetic entities can modify themselves when they are drawn (e.g. moving themselves, updating their envelopes, etc).
Layers containing Geodetic entities should not be shared between Drawing Surfaces.

Public Member Functions
TSLTMC	height () const

void	height (TSLTMC newValue)

TSLHorizontalAlignment	horizontalAlignment () const

void	horizontalAlignment (TSLHorizontalAlignment align)

const TSLCoord &	position () const

void	position (const TSLCoord &newPosition)

const char *	value () const

void	value (const char *newValue)

TSLVerticalAlignment	verticalAlignment () const

void	verticalAlignment (TSLVerticalAlignment align)

Public Member Functions inherited from TSLEntity
TSLCoord	centroid () const

TSLEntity *	clone () const

bool	contains (const TSLEntity *other) const

bool	crosses (const TSLEntity *other) const

void	alwaysMergeDifferences (bool _alwaysMergeDifferences)

TSLEntity *	difference (const TSLEntity *other) const

double	distance (const TSLCoord &point, bool useRenderedExtent=true, int drawingSurfaceID=-1) const

TSLEnvelope	envelope (int surfaceID=-1) const

bool	equals (const TSLEntity *other) const

TSLEntity *	intersection (const TSLEntity *other) const

bool	intersects (const TSLEntity *other) const

bool	intersects (const TSLEnvelope *envelope) const

bool	move (const TSLCoord &location, const TSLCoord &reference)

bool	overlaps (const TSLEntity *other) const

TSLEntitySet *	parent ()

const TSLEntitySet *	parent () const

void	renderLevel (int level)

int	renderLevel () const

bool	rotate (double angle, const TSLCoord *origin=NULL)

double	rotation () const

bool	rotation (double newValue)

bool	scale (double scaleParam, TSLCoord *origin=0)

bool	scaleXY (double scaleX, double scaleY, TSLCoord *origin=0)

double	squareDistance (const TSLCoord &point, bool useRenderedExtent=true, int drawingSurfaceID=-1) const

double	squareDistance (const TSLEntity *otherEntity) const

bool	touches (const TSLEntity *other) const

bool	translate (TSLTMC xoffset, TSLTMC yoffset)

TSLEntity *	unionWith (const TSLEntity *other) const

bool	within (const TSLEntity *other) const

TSLCoord	adjustedWeightedCentroid ()
	reserved for future use

TSLCoord	centreOfGravity ()
	reserved for future use

Public Member Functions inherited from TSLEntityBase
bool	addDataSet ()

bool	addDataSet (TSLDataHandler *toUseDataHandler)

bool	clearRenderingAttributes ()

TSLDataSet *	dataSet ()

const TSLDataSet *	dataSet () const

short	dataSourceID () const

void	dataSourceID (short dataSourceID)

bool	deleteDataSet ()

void	destroy ()

TSLEntityID	entityID () const

void	entityID (TSLEntityID value)

TSLFeatureID	featureID () const

void	featureID (TSLFeatureID newValue)

bool	getRendering (TSLRenderingAttributeInt attribute, int *result) const

bool	getRendering (TSLRenderingAttributeDouble attribute, double *result) const

bool	getRendering (TSLRenderingAttributeBool attribute, bool *result) const

bool	getRendering (TSLRenderingAttributes &result) const

TSL3DEntity *	is3DEntity ()

const TSL3DEntity *	is3DEntity () const

TSLEntity *	isEntity ()

const TSLEntity *	isEntity () const

bool	isOptimisedEntity () const

void	name (const char *newValue)

const char *	name () const

void	releaseResources (int surfaceID)

bool	setRendering (TSLRenderingAttributeInt attribute, int value)

bool	setRendering (TSLRenderingAttributeDouble attribute, double value)

bool	setRendering (TSLRenderingAttributeBool attribute, bool value)

bool	setRendering (const TSLRenderingAttributes &attributes)

void	sourceID (int value)

int	sourceID () const

TSLGeometryType	type () const

void	version (TSLVersion value)

TSLVersion	version () const

Static Public Member Functions
static TSLGeodeticText *	create (TSLFeatureID featureID, TSLTMC x, TSLTMC y, const char *value, TSLTMC height=100, TSLHorizontalAlignment xalign=TSLHorizontalAlignmentCentre, TSLVerticalAlignment yalign=TSLVerticalAlignmentMiddle, double rotation=0)

static const TSLGeodeticText *	isGeodeticText (const TSLEntity *entity)

static TSLGeodeticText *	isGeodeticText (TSLEntity *entity)

Static Public Member Functions inherited from TSLEntity
static TSLEntity *	createFromWKB (const unsigned char *wkb, unsigned int wkbLength, double TMCPerMU, double mapOffsetX=0.0, double mapOffsetY=0.0, bool multiAsEntitySet=false, double maxCurveAngle=0.0)

static TSLEntity *	createFromWKT (const char *wkt, double TMCPerMU, double mapOffsetX=0.0, double mapOffsetY=0.0, bool multiAsEntitySet=false, double maxCurveAngle=0.0)

Additional Inherited Members
Protected Member Functions inherited from TSLEntity
	~TSLEntity ()

Protected Member Functions inherited from TSLEntityBase
	~TSLEntityBase ()

Member Function Documentation

◆ create()

static TSLGeodeticText * TSLGeodeticText::create	(	TSLFeatureID	featureID,
		TSLTMC	x,
		TSLTMC	y,
		const char *	value,
		TSLTMC	height = 100,
		TSLHorizontalAlignment	xalign = TSLHorizontalAlignmentCentre,
		TSLVerticalAlignment	yalign = TSLVerticalAlignmentMiddle,
		double	rotation = 0 )

static

Creates a geodetic text object with the specified parameters.

This call should only be used for temporary entities. For example, this call may be used to create entities that are used in the spatial tests.

Parameters

featureID	ID of the feature code to assign to the entity. This is used when rendering map features if no specific attribute set has been created for the entity.
x	X coordinate of text position.
y	Y coordinate of text position.
value	Text string to be displayed.
height	Size of symbol in TMC units.
xalign	X alignment of text. This position of the text string is placed at the x coordinate.
yalign	Y alignment of text. This position of the text string is placed at the y coordinate.
rotation	Angle of rotation of text. Expressed in radians, +ve anti-clockwise from the +ve X axis.

Returns: NULL on error.

◆ height() [1/2]

TSLTMC TSLGeodeticText::height ( ) const

Query the size of the text.

◆ height() [2/2]

void TSLGeodeticText::height ( TSLTMC newValue )

Set the size of the text.

Parameters

newValue New size of text, in TMC units.

◆ horizontalAlignment() [1/2]

TSLHorizontalAlignment TSLGeodeticText::horizontalAlignment ( ) const

Query the horizontal alignment of the text.

◆ horizontalAlignment() [2/2]

void TSLGeodeticText::horizontalAlignment ( TSLHorizontalAlignment align )

Set the horizontal alignment of the geodetic text.

Parameters

align New alignment for the geodetic text.

◆ isGeodeticText() [1/2]

static const TSLGeodeticText * TSLGeodeticText::isGeodeticText ( const TSLEntity * entity )

static

Query whether the entity is geodetic text.

If this entity is geodetic text, returns an accessor, otherwise returns NULL.

When querying Optimised maps this query may return NULL.

Parameters

entity the entity to query

◆ isGeodeticText() [2/2]

static TSLGeodeticText * TSLGeodeticText::isGeodeticText ( TSLEntity * entity )

static

Query whether the entity is geodetic text.

If this entity is geodetic text, returns an accessor, otherwise returns NULL.

When querying Optimised maps this query may return NULL.

Parameters

entity the entity to query

◆ position() [1/2]

const TSLCoord & TSLGeodeticText::position ( ) const

Query the position of the geodetic text.

Returns a reference to the geodetic text position.

◆ position() [2/2]

void TSLGeodeticText::position ( const TSLCoord & newPosition )

Set the position of the geodetic text.

Parameters

newPosition New position for the geodetic text.

◆ value() [1/2]

const char * TSLGeodeticText::value ( ) const

Query the value of the geodetic text.

◆ value() [2/2]

void TSLGeodeticText::value ( const char * newValue )

Set the value of the geodetic text string.

Parameters

newValue New string to be displayed.

◆ verticalAlignment() [1/2]

TSLVerticalAlignment TSLGeodeticText::verticalAlignment ( ) const

Query the vertical alignment of the geodetic text.

◆ verticalAlignment() [2/2]

void TSLGeodeticText::verticalAlignment ( TSLVerticalAlignment align )

Set the vertical alignment of the geodetic text.

Parameters

align New alignment for the geodetic text.

Detailed Description

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Member Function Documentation

◆ create()

◆ height() [1/2]

◆ height() [2/2]

◆ horizontalAlignment() [1/2]

◆ horizontalAlignment() [2/2]

◆ isGeodeticText() [1/2]

◆ isGeodeticText() [2/2]

◆ position() [1/2]

◆ position() [2/2]

◆ value() [1/2]

◆ value() [2/2]

◆ verticalAlignment() [1/2]

◆ verticalAlignment() [2/2]