pal::FeaturePart Class Reference

Main class to handle feature. More...

#include <feature.h>

Inheritance diagram for pal::FeaturePart:

Public Member Functions
	FeaturePart (Feature *feat, const GEOSGeometry *geom)
	create a new generic feature
virtual	~FeaturePart ()
	Delete the feature.
int	setPositionForPoint (double x, double y, double scale, LabelPosition ***lPos, double delta_width, double angle)
	generate candidates for point feature Generate candidates for point features
int	setPositionOverPoint (double x, double y, double scale, LabelPosition ***lPos, double delta_width, double angle)
	generate one candidate over specified point
int	setPositionForLine (double scale, LabelPosition ***lPos, PointSet *mapShape, double delta_width)
	generate candidates for line feature Generate candidates for line features
LabelPosition *	curvedPlacementAtOffset (PointSet *path_positions, double *path_distances, int orientation, int index, double distance)
int	setPositionForLineCurved (LabelPosition ***lPos, PointSet *mapShape)
	Generate curved candidates for line features.
int	setPositionForPolygon (double scale, LabelPosition ***lPos, PointSet *mapShape, double delta_width)
	generate candidates for point feature Generate candidates for point features
Feature *	getFeature ()
	return the feature
const GEOSGeometry *	getGeometry () const
	return the geometry
Layer *	getLayer ()
	return the layer that feature belongs to
int	setPosition (double scale, LabelPosition ***lPos, double bbox_min[2], double bbox_max[2], PointSet *mapShape, RTree< LabelPosition *, double, 2, double > *candidates)
	generic method to generate candidates This method will call either setPositionFromPoint(), setPositionFromLine or setPositionFromPolygon
const char *	getUID ()
	get the unique id of the feature
void	print ()
	Print feature information Print feature unique id, geometry type, points, and holes on screen.
PalGeometry *	getUserGeometry ()
void	setLabelSize (double lx, double ly)
double	getLabelWidth () const
double	getLabelHeight () const
void	setLabelDistance (double dist)
double	getLabelDistance () const
void	setLabelInfo (LabelInfo *info)
bool	getFixedRotation ()
double	getLabelAngle ()
bool	getFixedPosition ()
bool	getAlwaysShow ()
int	getNumSelfObstacles () const
PointSet *	getSelfObstacle (int i)
bool	isConnected (FeaturePart *p2)
	check whether this part is connected with some other part
bool	mergeWithFeaturePart (FeaturePart *other)
	merge other (connected) part with this one and save the result in this part (other is unchanged).
void	addSizePenalty (int nbp, LabelPosition **lPos, double bbx[4], double bby[4])
Public Member Functions inherited from pal::PointSet
	PointSet ()
	PointSet (int nbPoints, double *x, double *y)
virtual	~PointSet ()
PointSet *	extractShape (int nbPtSh, int imin, int imax, int fps, int fpe, double fptx, double fpty)
PointSet *	createProblemSpecificPointSet (double bbmin[2], double bbmax[2], bool *inside)
CHullBox *	compute_chull_bbox ()
double	getDist (double px, double py, double *rx, double *ry)
	return the minimum distance bw this and the point (px,py)
void	getCentroid (double &px, double &py, bool forceInside=false)
int	getGeosType () const
void	getBoundingBox (double min[2], double max[2]) const
PointSet *	getHoleOf ()
	returns NULL if this isn't a hole.
int	getNumPoints () const
void	getPoint (double *d, double *ad, double dl, double *px, double *py)

Protected Member Functions
void	extractCoords (const GEOSGeometry *geom)
	read coordinates from a GEOS geom
void	removeDuplicatePoints ()
	find duplicate (or nearly duplicate points) and remove them.
Protected Member Functions inherited from pal::PointSet
	PointSet (double x, double y)
	PointSet (PointSet &ps)
void	deleteCoords ()

Protected Attributes
Feature *	f
int	nbHoles
PointSet **	holes
GEOSGeometry *	the_geom
bool	ownsGeom
Protected Attributes inherited from pal::PointSet
int	nbPoints
double *	x
double *	y
int *	cHull
int	cHullSize
int	type
PointSet *	holeOf
PointSet *	parent
double	xmin
double	xmax
double	ymin
double	ymax

Additional Inherited Members
Static Public Member Functions inherited from pal::PointSet
static void	splitPolygons (LinkedList< PointSet * > *shapes_toProcess, LinkedList< PointSet * > *shapes_final, double xrm, double yrm, char *uid)

Detailed Description

Main class to handle feature.

Constructor & Destructor Documentation

pal::FeaturePart::FeaturePart	(	Feature *	feat,
		const GEOSGeometry *	geom
	)

create a new generic feature

Parameters

feat	a pointer for a Feat which contains the spatial entites
geom	a pointer to a GEOS geometry

pal::FeaturePart::~FeaturePart ( )

virtual

Delete the feature.

Member Function Documentation

void pal::FeaturePart::addSizePenalty	(	int	nbp,
		LabelPosition **	lPos,
		double	bbx[4],
		double	bby[4]
	)

LabelPosition * pal::FeaturePart::curvedPlacementAtOffset	(	PointSet *	path_positions,
		double *	path_distances,
		int	orientation,
		int	index,
		double	distance
	)

void pal::FeaturePart::extractCoords ( const GEOSGeometry *  geom )

protected

read coordinates from a GEOS geom

bool pal::FeaturePart::getAlwaysShow ( )

inline

Feature* pal::FeaturePart::getFeature ( )

inline

return the feature

Returns

the feature

bool pal::FeaturePart::getFixedPosition ( )

inline

bool pal::FeaturePart::getFixedRotation ( )

inline

const GEOSGeometry* pal::FeaturePart::getGeometry ( ) const

inline

return the geometry

Returns

the geometry

double pal::FeaturePart::getLabelAngle ( )

inline

double pal::FeaturePart::getLabelDistance ( ) const

inline

double pal::FeaturePart::getLabelHeight ( ) const

inline

double pal::FeaturePart::getLabelWidth ( ) const

inline

Layer * pal::FeaturePart::getLayer

(

)

return the layer that feature belongs to

Returns

the layer of the feature

int pal::FeaturePart::getNumSelfObstacles ( ) const

inline

PointSet* pal::FeaturePart::getSelfObstacle ( int  i )

inline

const char * pal::FeaturePart::getUID

(

)

get the unique id of the feature

Returns

the feature unique identifier

PalGeometry* pal::FeaturePart::getUserGeometry ( )

inline

bool pal::FeaturePart::isConnected

(

FeaturePart *

p2

)

check whether this part is connected with some other part

bool pal::FeaturePart::mergeWithFeaturePart

(

FeaturePart *

other

)

merge other (connected) part with this one and save the result in this part (other is unchanged).

Return true on success, false if the feature wasn't modified

void pal::FeaturePart::print

(

)

Print feature information Print feature unique id, geometry type, points, and holes on screen.

void pal::FeaturePart::removeDuplicatePoints ( )

protected

find duplicate (or nearly duplicate points) and remove them.

Probably to avoid numerical errors in geometry algorithms.

void pal::FeaturePart::setLabelDistance ( double  dist )

inline

void pal::FeaturePart::setLabelInfo ( LabelInfo *  info )

inline

void pal::FeaturePart::setLabelSize ( double  lx, double  ly  )

inline

int pal::FeaturePart::setPosition	(	double	scale,
		LabelPosition ***	lPos,
		double	bbox_min[2],
		double	bbox_max[2],
		PointSet *	mapShape,
		RTree< LabelPosition *, double, 2, double > *	candidates
	)

generic method to generate candidates This method will call either setPositionFromPoint(), setPositionFromLine or setPositionFromPolygon

Parameters

scale	the map scale is 1:scale
lPos	pointer to candidates array in which candidates will be put
bbox_min	min values of the map extent
bbox_max	max values of the map extent
mapShape	generate candidates for this spatial entites
candidates	index for candidates

Returns

the number of candidates in *lPos

int pal::FeaturePart::setPositionForLine	(	double	scale,
		LabelPosition ***	lPos,
		PointSet *	mapShape,
		double	delta_width
	)

generate candidates for line feature Generate candidates for line features

Parameters

scale	map scale is 1:scale
lPos	pointer to an array of candidates, will be filled by generated candidates
mapShape	a pointer to the line
delta_width	delta width

Returns

the number of generated cadidates

int pal::FeaturePart::setPositionForLineCurved	(	LabelPosition ***	lPos,
		PointSet *	mapShape
	)

Generate curved candidates for line features.

int pal::FeaturePart::setPositionForPoint	(	double	x,
		double	y,
		double	scale,
		LabelPosition ***	lPos,
		double	delta_width,
		double	angle
	)

generate candidates for point feature Generate candidates for point features

Parameters

x	x coordinates of the point
y	y coordinates of the point
scale	map scale is 1:scale
lPos	pointer to an array of candidates, will be filled by generated candidates
delta_width	delta width
angle	orientation of the label

Returns

the number of generated cadidates

int pal::FeaturePart::setPositionForPolygon	(	double	scale,
		LabelPosition ***	lPos,
		PointSet *	mapShape,
		double	delta_width
	)

generate candidates for point feature Generate candidates for point features

Parameters

scale	map scale is 1:scale
lPos	pointer to an array of candidates, will be filled by generated candidates
mapShape	a pointer to the polygon
delta_width	delta width

Returns

the number of generated cadidates

int pal::FeaturePart::setPositionOverPoint	(	double	x,
		double	y,
		double	scale,
		LabelPosition ***	lPos,
		double	delta_width,
		double	angle
	)

generate one candidate over specified point

Member Data Documentation

Feature* pal::FeaturePart::f

protected

PointSet** pal::FeaturePart::holes

protected

int pal::FeaturePart::nbHoles

protected

bool pal::FeaturePart::ownsGeom

protected

GEOSGeometry* pal::FeaturePart::the_geom

protected

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

• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/pal/feature.h
• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/pal/feature.cpp