Detailed Description

Class to display heat map data.

Public Types
enum	ColourScaling { NormalisedByViewExtent , NormalisedByWorldExtent , Clamped }
	Defining how the colour scheme values are interpreted relative to the kernel density values. More...

Public Member Functions
	TSLHeatMapDataLayer ()

void	setSampleRadius (unsigned char pixels)

void	setColourScaling (ColourScaling type, float clampedValue=0)

bool	loadSpecifiedData (unsigned int numEntries, double wgs84Latitudes, double wgs84Longitudes, float *weightings=0)

void *	operator new (size_t size)

void *	operator new (size_t size, char *filename, int line)

Public Member Functions inherited from TSLDataLayer
void	addDrawingCallback (TSLDataLayerDrawingCallback *drawingCallback)

bool	addFeatureRendering (const char *featureName, TSLFeatureID featureID)

bool	addLoader (TSLFileLoader loader, TSLLoaderAppCallback callback, void arg, TSLAllLoadedCallback allLoadedCallback=0, void *arg2=0)

bool	addPathList (const TSLPathList *path_list)

void	cancelFlashback ()

bool	clearFeatureRendering (const char *featureName, TSLFeatureID featureID)

TSLDataHandler *	createDataHandler (const char *config_file=0)

TSLHistoryVersion	currentVersion () const

TSLDataHandler *	dataHandler ()

const TSLDataHandler *	dataHandler () const

void	destroy ()

bool	entityIsVisible (const TSLEntity entity, const TSLDrawingSurface drawingSurface) const

const TSLFeatureClassList *	featureList () const

const TSLFeatureClassList *	featureList (const char *detailLayerName) const

bool	fileModificationTime (const char *filename, TSLTimeType &lastModificationTime)

TSLEntity *	findEntity (TSLTMC x, TSLTMC y, TSLTMC aperture, int depth, const char *featureName=0, int drawingSurfaceID=-1)

bool	findFile (const char *filename, TSLSimpleString &foundPath) const

void	flashbackToTimestamp (TSLHistoryTimestamp timestamp, TSLLayerArchiveCallback archiveCallback, void *arg=0)

void	flashbackToTimestamp (TSLHistoryTimestamp timestamp, TSLLayerArchiveTileCallback archiveTileCallback, void *arg=0)

void	flashbackToVersion (TSLHistoryVersion version, TSLLayerArchiveCallback archiveCallback, void *arg=0)

void	flashbackToVersion (TSLHistoryVersion version, TSLLayerArchiveTileCallback archiveTileCallback, void *arg=0)

bool	getActiveLayerName (const TSLEnvelope &extent, double screenResolution, TSLSimpleString &activeLayerName) const

TSLEntityIterator *	getEntityIterator (const char detailLayer, TSLSelector selector=NULL, TSLEnvelope *extent=NULL, bool splitOptimisedPrimitives=true)

bool	getFeatureRendering (const char featureName, TSLFeatureID featureID, TSLRenderingAttributeInt attribute, int result) const

bool	getFeatureRendering (const char featureName, TSLFeatureID featureID, TSLRenderingAttributeDouble attribute, double result) const

bool	getFeatureRendering (const char featureName, TSLFeatureID featureID, TSLRenderingAttributeBool attribute, bool result) const

bool	getFeatureRendering (const char featureName, TSLFeatureID featureID, TSLRenderingAttributes result) const

TSLFileLoader *	getLoader ()

bool	getMUExtent (double x1, double y1, double x2, double y2, int drawingSurfaceID=-1) const

bool	getTMCExtent (TSLTMC x1, TSLTMC y1, TSLTMC x2, TSLTMC y2, int drawingSurfaceID=-1) const

bool	getUUExtent (double x1, double y1, double x2, double y2, const TSLDrawingSurface *drawingSurface) const

bool	importHistory (TSLHistoryVersion mapVersion, TSLHistoryTimestamp timestamp, TSLHistoryImportSet *historySet)

bool	latLongToTMC (double latitude, double longitude, TSLTMC x, TSLTMC y, bool local=false) const

bool	latLongToTMC (int num, double latitudes, double longitudes, TSLTMC xs, TSLTMC ys, bool local=false) const

TSLDataLayerTypeEnum	layerType () const

bool	loadData (const char *filename)

bool	loadRendering (const char *filename)

void	notifyChanged (bool changed=true)

TSLMapQuery *	query (TSLTMC x1, TSLTMC y1, TSLTMC x2, TSLTMC y2, int depth=-1, const char *featureName=NULL, int drawingSurfaceID=-1) const

TSLMapQuery *	query (TSLTMC x1, TSLTMC y1, TSLTMC x2, TSLTMC y2, TSLSelector *selector, int drawingSurfaceID=-1) const

const TSLCoordinateSystem *	getCoordinateSystem () const

bool	queryVersionHistory (const TSLEnvelope &extent, TSLVersionHistorySet &history)

void	refreshFlashback ()

bool	removeData ()

void	releaseResources (int surfaceID)

bool	saveRendering (const char *filename, TSLMapLinkVersion ver=TSL_CURRENT_MAPLINK_VERSION)

bool	setCoordinateSystem (const TSLCoordinateSystem *coordinateSystem)

bool	setFeatureRendering (const char *featureName, TSLFeatureID featureID, TSLRenderingAttributeInt attribute, int value)

bool	setFeatureRendering (const char *featureName, TSLFeatureID featureID, TSLRenderingAttributeDouble attribute, double value)

bool	setFeatureRendering (const char *featureName, TSLFeatureID featureID, TSLRenderingAttributeBool attribute, bool value)

bool	setFeatureRendering (const char featureName, TSLFeatureID featureID, TSLRenderingAttributes value)

bool	TMCToLatLong (TSLTMC x, TSLTMC y, double latitude, double longitude, bool local=false, bool boundCheck=true) const

bool	TMCToLatLong (int num, TSLTMC xs, TSLTMC ys, double latitudes, double longitudes, bool local=false) const

const TSLVersionHistorySet *	versionHistory () const

Member Enumeration Documentation

◆ ColourScaling

enum TSLHeatMapDataLayer::ColourScaling

Defining how the colour scheme values are interpreted relative to the kernel density values.

Enumerator
NormalisedByViewExtent	The densest spot in the current view is used to normalise the values when mapping to colour scheme.
NormalisedByWorldExtent	Applies a consistent normalisation across the world, for a given resolution. The normalisation value is calculated once for a global resolution and then adjusted linearly when the display resolution changes.
Clamped	Uses the specified value. Any density value larger than this will be clamped to the hottest.

Constructor & Destructor Documentation

◆ TSLHeatMapDataLayer()

TSLHeatMapDataLayer::TSLHeatMapDataLayer ( )

Member Function Documentation

◆ loadSpecifiedData()

bool TSLHeatMapDataLayer::loadSpecifiedData	(	unsigned int	numEntries,
		double *	wgs84Latitudes,
		double *	wgs84Longitudes,
		float *	weightings = 0 )

This method is called to load specified data into the layer, replacing any existing data

Parameters

numEntries	The number of entries to load.
wgs84Latitudes	The array of WGS84 latitudes.
wgs84Longitudes	The array of WGS84 longitudes.
weightings	The array of WGS84 weightings.

◆ operator new() [1/2]

void * TSLHeatMapDataLayer::operator new ( size_t size )

Allocation override for API redirection.

◆ operator new() [2/2]

void * TSLHeatMapDataLayer::operator new	(	size_t	size,
		char *	filename,
		int	line )

When included in an MFC application in debug mode, the debug new expects this to be here. Override it and return the same as the normal one. The library must include it when compiled in release mode, since the user's application may be in debug mode.

◆ setColourScaling()

void TSLHeatMapDataLayer::setColourScaling	(	ColourScaling	type,
		float	clampedValue = 0 )

This method is called to set the colour scaling type and any clamp value. The default is NormalisedByView.

Parameters

type	The colour scaling type.
clampedValue	The clamp value.

◆ setSampleRadius()

void TSLHeatMapDataLayer::setSampleRadius ( unsigned char pixels )

This method is called to set the radius in pixels that a point will affect in the bitmap - larger values take longer to process. The impact of the value decreases linearly further way from the point. Default is defined by the m_defaultSampleRadius constant. 0 value is ignored.

Parameters

pixels The radius in pixels.

Detailed Description

Public Types

Public Member Functions

Member Enumeration Documentation

◆ ColourScaling

Constructor & Destructor Documentation

◆ TSLHeatMapDataLayer()

Member Function Documentation

◆ loadSpecifiedData()

◆ operator new() [1/2]

◆ operator new() [2/2]

◆ setColourScaling()

◆ setSampleRadius()