#include <Ruler.h>

Public Member Functions
const QPointF &	point1 () const

const QPointF &	point2 () const

QPointF	project (const QPointF &)

	Ruler ()

void	setPoint1 (const QPointF &p)

void	setPoint2 (const QPointF &p)

	~Ruler ()

Private Attributes
QPointF	p1

QPointF	p2

Detailed Description

Definition at line 12 of file Ruler.h.

Constructor & Destructor Documentation

◆ Ruler()

Ruler::Ruler ( )

Definition at line 9 of file Ruler.cc.

             : p1(QPointF(10, 10)), p2(QPointF(100, 190))
{
}

◆ ~Ruler()

Ruler::~Ruler ( )

Definition at line 13 of file Ruler.cc.

14{

15}

Member Function Documentation

◆ point1()

const QPointF & Ruler::point1 ( ) const

Definition at line 31 of file Ruler.cc.

{
    return p1;
}

References p1.

◆ point2()

const QPointF & Ruler::point2 ( ) const

Definition at line 36 of file Ruler.cc.

{
    return p2;
}

References p2.

◆ project()

QPointF Ruler::project ( const QPointF & pt )

Definition at line 17 of file Ruler.cc.

{
    double x1 = p1.x();
    double y1 = p1.y();
    double x2 = p2.x();
    double y2 = p2.y();
    double a1 = (y2 - y1) / (x2 - x1);
    double b1 = y1 - x1 * a1;
    double a2 = (x2 - x1) / (y1 - y2);
    double b2 = pt.y() - a2 * pt.x();
    double xm = (b2 - b1) / (a1 - a2);
    return QPointF(xm, xm * a1 + b1);
}

References p1, and p2.

◆ setPoint1()

void Ruler::setPoint1 ( const QPointF & p )

inline

Definition at line 19 of file Ruler.h.

                                     {
        p1 = p;
    }

References p, and p1.

◆ setPoint2()

void Ruler::setPoint2 ( const QPointF & p )

inline

Definition at line 23 of file Ruler.h.

                                     {
        p2 = p;
    }

References p, and p2.

Member Data Documentation

◆ p1

QPointF Ruler::p1

private

Definition at line 27 of file Ruler.h.

◆ p2

QPointF Ruler::p2