Ellipse.cc File Reference

#include "Ellipse.h"
#include <cmath>
#include <iostream>

Go to the source code of this file.

Functions
qreal	length (const QPointF &vec)
QPointF	rotate90 (const QPointF &p)
qreal	sqrlength (const QPointF &vec)

Function Documentation

length()

qreal length ( const QPointF & vec )

inline

Definition at line 82 of file Ellipse.cc.

{
    return sqrt(vec.x() * vec.x() + vec.y() * vec.y());
}

rotate90()

QPointF rotate90 ( const QPointF & p )

inline

Definition at line 58 of file Ellipse.cc.

                                          {
    return QPointF(p.y(), -p.x());
}

References p.

sqrlength()

qreal sqrlength ( const QPointF & vec )

inline

Definition at line 78 of file Ellipse.cc.

{
    return vec.x() * vec.x() + vec.y() * vec.y();
}