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#include <houghline.h>

Inheritance diagram for HoughLine:

Public Types

- Public Types inherited from QLineF
enum  IntersectionType

Public Member Functions

 HoughLine (double theta, double r, int width, int height, int score)
bool DistancePointLine (const QPointF &point, QPointF &intersection, double &distance)
double getR () const
int getScore () const
double getTheta () const
IntersectResult Intersect (const HoughLine &other_line, QPointF &intersection)
void Offset (const int offsetX, const int offsetY)
bool operator< (const HoughLine &other) const
HoughLineoperator= (const HoughLine &other)
void printHoughLine ()
QPointF RotatePoint (int x1, double r, double theta, int width, int height)
void setTheta (const double theta)
- Public Member Functions inherited from QLineF
 QLineF (const QLine &line)
 QLineF (const QPointF &p1, const QPointF &p2)
 QLineF (qreal x1, qreal y1, qreal x2, qreal y2)
qreal angle () const const
qreal angleTo (const QLineF &line) const const
QPointF center () const const
qreal dx () const const
qreal dy () const const
IntersectionType intersects (const QLineF &line, QPointF *intersectionPoint) const const
bool isNull () const const
qreal length () const const
QLineF normalVector () const const
bool operator!= (const QLineF &line) const const
QDataStreamoperator<< (QDataStream &stream, const QLineF &line)
bool operator== (const QLineF &line) const const
QDataStreamoperator>> (QDataStream &stream, QLineF &line)
QPointF p1 () const const
QPointF p2 () const const
QPointF pointAt (qreal t) const const
void setAngle (qreal angle)
void setLength (qreal length)
void setLine (qreal x1, qreal y1, qreal x2, qreal y2)
void setP1 (const QPointF &p1)
void setP2 (const QPointF &p2)
void setPoints (const QPointF &p1, const QPointF &p2)
QLine toLine () const const
void translate (const QPointF &offset)
void translate (qreal dx, qreal dy)
QLineF translated (const QPointF &offset) const const
QLineF translated (qreal dx, qreal dy) const const
QLineF unitVector () const const
qreal x1 () const const
qreal x2 () const const
qreal y1 () const const
qreal y2 () const const

Static Public Member Functions

static bool compareByScore (const HoughLine *line1, const HoughLine *line2)
static bool compareByTheta (const HoughLine *line1, const HoughLine *line2)
static void getSortedTopThreeLines (QVector< HoughLine * > &houghLines, QVector< HoughLine * > &top3Lines)
- Static Public Member Functions inherited from QLineF
QLineF fromPolar (qreal length, qreal angle)

Additional Inherited Members

- Public Attributes inherited from QLineF
typedef IntersectType

Detailed Description

Line representation for HoughTransform Based on the java implementation found on http://vase.essex.ac.uk/software/HoughTransform.

Patrick Molenaar

Definition at line 22 of file houghline.h.

Member Enumeration Documentation

◆ IntersectResult

enum HoughLine::IntersectResult

Definition at line 25 of file houghline.h.

Constructor & Destructor Documentation

◆ HoughLine()

HoughLine::HoughLine ( double theta,
double r,
int width,
int height,
int score )

Initialises the hough line.

Definition at line 16 of file houghline.cpp.

Member Function Documentation

◆ compareByScore()

bool HoughLine::compareByScore ( const HoughLine * line1,
const HoughLine * line2 )

Definition at line 72 of file houghline.cpp.

◆ compareByTheta()

bool HoughLine::compareByTheta ( const HoughLine * line1,
const HoughLine * line2 )

Definition at line 77 of file houghline.cpp.

◆ DistancePointLine()

bool HoughLine::DistancePointLine ( const QPointF & point,
QPointF & intersection,
double & distance )

Definition at line 134 of file houghline.cpp.

◆ getR()

double HoughLine::getR ( ) const

Definition at line 57 of file houghline.cpp.

◆ getScore()

int HoughLine::getScore ( ) const

Definition at line 52 of file houghline.cpp.

◆ getSortedTopThreeLines()

void HoughLine::getSortedTopThreeLines ( QVector< HoughLine * > & houghLines,
QVector< HoughLine * > & top3Lines )

Definition at line 160 of file houghline.cpp.

◆ getTheta()

double HoughLine::getTheta ( ) const

Definition at line 62 of file houghline.cpp.

◆ Intersect()

HoughLine::IntersectResult HoughLine::Intersect ( const HoughLine & other_line,
QPointF & intersection )

Sources for intersection and distance calculations came from http://paulbourke.net/geometry/pointlineplane/ Also check https://doc.qt.io/archives/qt-4.8/qlinef.html for more line methods.

Definition at line 94 of file houghline.cpp.

◆ Offset()

void HoughLine::Offset ( const int offsetX,
const int offsetY )

Definition at line 154 of file houghline.cpp.

◆ operator<()

bool HoughLine::operator< ( const HoughLine & other) const

Definition at line 52 of file houghline.h.

◆ operator=()

HoughLine & HoughLine::operator= ( const HoughLine & other)

Definition at line 42 of file houghline.h.

◆ printHoughLine()

void HoughLine::printHoughLine ( )

Definition at line 82 of file houghline.cpp.

◆ RotatePoint()

QPointF HoughLine::RotatePoint ( int x1,
double r,
double theta,
int width,
int height )

Definition at line 27 of file houghline.cpp.

◆ setTheta()

void HoughLine::setTheta ( const double theta)

Definition at line 67 of file houghline.cpp.

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