A basic line class including stroke width (thickness). More...

#include <Shapes.h>

Public Member Functions
	Line (const QLineF &line=QLineF(), float thickness=1)
	Initializes a new instance of the Line class. More...

	Line (const Polygon &poly)

	Line (const cv::Point p1, const cv::Point p2, float thickness=1)

	Line (const Vector2D &p1, const Vector2D &p2, float thickness=1)

	Line (double p1x, double p1y, double p2x, double p2y, float thickness=1)

bool	isEmpty () const
	Determines whether this instance is empty. More...

void	sortEndpoints (bool horizontal=true)

void	setLine (const QLineF &line, float thickness=1)
	Sets the line. More...

void	setThickness (float thickness)

float	thickness () const
	Returns the stroke width of the line. More...

double	squaredLength () const

double	length () const
	Returns the line length. More...

double	weightedLength (const Vector2D &orVec) const
	Returns the orientation weighed length. Hence, if orVec is parallel to the line, the length is 0. If it is orthogonal, the line length is returned. More...

double	angle () const
	Returns the line angle. More...

double	minDistance (const Line &l) const
	Returns the minimum distance of the line endings of line l to the line endings of the current line instance. More...

void	translate (cv::Point offset)

void	scale (double s)

double	distance (const Vector2D &p) const
	Returns the minimal distance of point p to the current line instance. More...

double	horizontalOverlap (const Line &l) const

double	horizontalDistance (const Line &l, double threshold=20) const

double	verticalOverlap (const Line &l) const

double	verticalDistance (const Line &l, double threshold=20) const

Line	merge (const Line &l) const
	Merges the specified line l with the current line instance. More...

Line	mergeFit (const Line &l) const

Line	gapLine (const Line &l) const
	Calculates the gap line between line l and the current line instance. More...

double	diffAngle (const Line &l) const
	The angle difference of line l and the current line instance. More...

bool	within (const Vector2D &p) const
	Calculated if point p is within the current line instance. More...

Line	moved (const Vector2D &mVec) const
	Returns a line moved by the vector mVec. More...

Vector2D	p1 () const
	Returns the start point. More...

Vector2D	p2 () const
	Returns the end point. More...

Vector2D	center () const

QLineF	qLine () const
	Returns the line information. More...

QPolygonF	toPoly () const

bool	isHorizontal (double mAngleTresh=0.5) const
	Determines whether the specified m angle tresh is horizontal. More...

bool	isVertical (double mAngleTresh=0.5) const

bool	isColinear (const Line &line, double threshold=20) const

bool	isClose (const Line &line, double threshold=20) const

bool	intersects (const Line &line, QLineF::IntersectType t=QLineF::BoundedIntersection) const

Vector2D	intersection (const Line &line, QLineF::IntersectType t=QLineF::BoundedIntersection) const
	Returns the intersection point of both lines. This function returns an empty vector if the lines do not intersect within the bounds More...

Vector2D	intersectionUnrestricted (const Line &line) const

Vector2D	vector () const
	Returns the line's orientation vector. More...

void	draw (QPainter &p) const

Line	extendBorder (const Rect &box) const
	Extends the line until the borders of the box. More...

Static Public Member Functions
static bool	lessX1 (const Line &l1, const Line &l2)

static bool	lessY1 (const Line &l1, const Line &l2)

Protected Member Functions
cv::Mat	toMat (const Line &l) const

Protected Attributes
QLineF	mLine

float	mThickness = 1

Detailed Description

A basic line class including stroke width (thickness).

Constructor & Destructor Documentation

rdf::Line::Line	(	const QLineF &	line = `QLineF()`,
		float	thickness = `1`
	)

Initializes a new instance of the Line class.

Parameters

line	The line.
thickness	The stroke width.

rdf::Line::Line ( const Polygon & poly )

rdf::Line::Line	(	const cv::Point	p1,
		const cv::Point	p2,
		float	thickness = `1`
	)

rdf::Line::Line	(	const Vector2D &	p1,
		const Vector2D &	p2,
		float	thickness = `1`
	)

rdf::Line::Line	(	double	p1x,
		double	p1y,
		double	p2x,
		double	p2y,
		float	thickness = `1`
	)

Member Function Documentation

double rdf::Line::angle ( ) const

Returns the line angle.

Returns: The line angle [-pi,+pi] in radians.

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Vector2D rdf::Line::center ( ) const

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double rdf::Line::diffAngle ( const Line & l ) const

The angle difference of line l and the current line instance.

Parameters

l	The line l.

Returns: The angle difference in rad.

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double rdf::Line::distance ( const Vector2D & p ) const

Returns the minimal distance of point p to the current line instance.

Parameters

p	The point p.

Returns: The distance of point p.

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void rdf::Line::draw ( QPainter & p ) const

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Line rdf::Line::extendBorder ( const Rect & box ) const

Extends the line until the borders of the box.

Parameters

box	the 'cropping' box.

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Line rdf::Line::gapLine ( const Line & l ) const

Calculates the gap line between line l and the current line instance.

Parameters

l	The line l to which a gap line is calculated.

Returns: The gap line.

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double rdf::Line::horizontalDistance	(	const Line &	l,
		double	threshold = `20`
	)		const

double rdf::Line::horizontalOverlap ( const Line & l ) const

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Vector2D rdf::Line::intersection	(	const Line &	line,
		QLineF::IntersectType	t = `QLineF::BoundedIntersection`
	)		const

Returns the intersection point of both lines. This function returns an empty vector if the lines do not intersect within the bounds

Parameters

line	Another line.

Returns: The line intersection.

Vector2D rdf::Line::intersectionUnrestricted ( const Line & line ) const

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bool rdf::Line::intersects	(	const Line &	line,
		QLineF::IntersectType	t = `QLineF::BoundedIntersection`
	)		const

bool rdf::Line::isClose	(	const Line &	line,
		double	threshold = `20`
	)		const

bool rdf::Line::isColinear	(	const Line &	line,
		double	threshold = `20`
	)		const

bool rdf::Line::isEmpty ( ) const

Determines whether this instance is empty.

Returns: True if no line is set

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bool rdf::Line::isHorizontal ( double mAngleTresh = 0.5 ) const

Determines whether the specified m angle tresh is horizontal.

Parameters

mAngleTresh The m angle tresh.

Returns: true if the specified m angle tresh is horizontal; otherwise, false.

bool rdf::Line::isVertical ( double mAngleTresh = 0.5 ) const

double rdf::Line::length ( ) const

Returns the line length.

Returns: The line length.

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bool rdf::Line::lessX1	(	const Line &	l1,
		const Line &	l2
	)

static

bool rdf::Line::lessY1	(	const Line &	l1,
		const Line &	l2
	)

static

Line rdf::Line::merge ( const Line & l ) const

Merges the specified line l with the current line instance.

Parameters

l	The line to merge.

Returns: The merged line.

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Line rdf::Line::mergeFit ( const Line & l ) const

double rdf::Line::minDistance ( const Line & l ) const

Returns the minimum distance of the line endings of line l to the line endings of the current line instance.

Parameters

l	The line l to which the minimum distance is computed.

Returns: The minimum distance.

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Line rdf::Line::moved ( const Vector2D & mVec ) const

Returns a line moved by the vector mVec.

Parameters

mVec	Move vector.

Returns

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Vector2D rdf::Line::p1 ( ) const

Returns the start point.

Returns: The start point.

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Vector2D rdf::Line::p2 ( ) const

Returns the end point.

Returns: The end point.

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QLineF rdf::Line::qLine ( ) const

Returns the line information.

Returns: The line.

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void rdf::Line::scale ( double s )

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void rdf::Line::setLine	(	const QLineF &	line,
		float	thickness = `1`
	)

Sets the line.

Parameters

line	The line.
thickness	The stroke width.

void rdf::Line::setThickness ( float thickness )

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void rdf::Line::sortEndpoints ( bool horizontal = true )

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double rdf::Line::squaredLength ( ) const

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float rdf::Line::thickness ( ) const

Returns the stroke width of the line.

Returns: The stroke width.

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cv::Mat rdf::Line::toMat ( const Line & l ) const

protected

QPolygonF rdf::Line::toPoly ( ) const

void rdf::Line::translate ( cv::Point offset )

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Vector2D rdf::Line::vector ( ) const

Returns the line's orientation vector.

Returns

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double rdf::Line::verticalDistance	(	const Line &	l,
		double	threshold = `20`
	)		const

double rdf::Line::verticalOverlap ( const Line & l ) const

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double rdf::Line::weightedLength ( const Vector2D & orVec ) const

Returns the orientation weighed length. Hence, if orVec is parallel to the line, the length is 0. If it is orthogonal, the line length is returned.

Parameters

orVec An orientation vector.

Returns: The length weighed by the orientation

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bool rdf::Line::within ( const Vector2D & p ) const

Calculated if point p is within the current line instance.

Parameters

p	The point p to be checked.

Returns: True if p is within the current line instance.

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Member Data Documentation

QLineF rdf::Line::mLine

protected

float rdf::Line::mThickness = 1

protected

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

src/Core/Shapes.h
src/Core/Shapes.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation