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#ifndef SEEN_NR_POINT_H
#define SEEN_NR_POINT_H
/** \file
* Cartesian point class.
*/
//#include <math.h>
//#include <stdexcept>
#include <iostream>
//#include <iomanip>
#include <libnr/nr-coord.h>
#include <libnr/nr-dim2.h>
//#include "round.h"
#include "decimal-round.h"
/// A NRPoint consists of x and y coodinates.
/// \todo
/// This class appears to be obsoleted out in favour of NR::Point.
struct NRPoint {
NR::Coord x, y;
};
namespace NR {
class Matrix;
/// Cartesian point.
class Point {
public:
inline Point()
{ _pt[X] = _pt[Y] = 0; }
inline Point(Coord x, Coord y) {
_pt[X] = x;
_pt[Y] = y;
}
inline Point(NRPoint const &p) {
_pt[X] = p.x;
_pt[Y] = p.y;
}
inline Point(Point const &p) {
for (unsigned i = 0; i < 2; ++i) {
_pt[i] = p._pt[i];
}
}
inline Point &operator=(Point const &p) {
for (unsigned i = 0; i < 2; ++i) {
_pt[i] = p._pt[i];
}
return *this;
}
inline Coord operator[](unsigned i) const {
return _pt[i];
}
inline Coord &operator[](unsigned i) {
return _pt[i];
}
Coord operator[](Dim2 d) const throw() { return _pt[d]; }
Coord &operator[](Dim2 d) throw() { return _pt[d]; }
/** Return a point like this point but rotated -90 degrees.
(If the y axis grows downwards and the x axis grows to the
right, then this is 90 degrees counter-clockwise.)
**/
Point ccw() const {
return Point(_pt[Y], -_pt[X]);
}
/** Return a point like this point but rotated +90 degrees.
(If the y axis grows downwards and the x axis grows to the
right, then this is 90 degrees clockwise.)
**/
Point cw() const {
return Point(-_pt[Y], _pt[X]);
}
/**
\brief A function to lower the precision of the point
\param places The number of decimal places that should be in
the final number.
*/
inline void round (int places = 0) {
_pt[X] = (Coord)(Inkscape::decimal_round((double)_pt[X], places));
_pt[Y] = (Coord)(Inkscape::decimal_round((double)_pt[Y], places));
return;
}
void normalize();
inline Point &operator+=(Point const &o) {
for ( unsigned i = 0 ; i < 2 ; ++i ) {
_pt[i] += o._pt[i];
}
return *this;
}
inline Point &operator-=(Point const &o) {
for ( unsigned i = 0 ; i < 2 ; ++i ) {
_pt[i] -= o._pt[i];
}
return *this;
}
inline Point &operator/=(double const s) {
for ( unsigned i = 0 ; i < 2 ; ++i ) {
_pt[i] /= s;
}
return *this;
}
inline Point &operator*=(double const s) {
for ( unsigned i = 0 ; i < 2 ; ++i ) {
_pt[i] *= s;
}
return *this;
}
Point &operator*=(Matrix const &m);
inline int operator == (const Point &in_pnt) {
return ((_pt[X] == in_pnt[X]) && (_pt[Y] == in_pnt[Y]));
}
friend inline std::ostream &operator<< (std::ostream &out_file, const NR::Point &in_pnt);
private:
Coord _pt[2];
};
/** A function to print out the Point. It just prints out the coords
on the given output stream */
inline std::ostream &operator<< (std::ostream &out_file, const NR::Point &in_pnt) {
out_file << "X: " << in_pnt[X] << " Y: " << in_pnt[Y];
return out_file;
}
} /* namespace NR */
#endif /* !SEEN_NR_POINT_H */
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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