DGtal 1.3.0
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LibBoard::Point Struct Reference

Struct representing a 2D point. More...

#include <Board/Point.h>

## Public Member Functions

Point ()

Point (const Point &other)

Pointoperator= (const Point &other)=default

Point (double xc, double yc)

Pointrotate (double angle)

void get (double &xout, double &yout) const

Point rotated (double angle) const

Pointrotate (double angle, const Point &center)

Point rotated (double angle, const Point &center) const

Pointoperator+= (const Point &other)

Pointoperator-= (const Point &other)

Pointoperator*= (double s)

Pointoperator/= (double s)

Point operator- ()

double norm () const

double x

double y

## Detailed Description

Struct representing a 2D point.

The Point structure.

Examples
geometry/curves/exampleAlphaThickSegmentTgtCover.cpp, and geometry/curves/greedyAlphaThickDecomposition.cpp.

Definition at line 27 of file Point.h.

## ◆ Point() [1/3]

 LibBoard::Point::Point ( )
inline

Point constructor.

Definition at line 36 of file Point.h.

36:x(0.0),y(0.0) { }
double y
Definition: Point.h:30
double x
Definition: Point.h:29

Referenced by operator-(), and rotated().

## ◆ Point() [2/3]

 LibBoard::Point::Point ( const Point & other )
inline

Point constructor.

Parameters
 other point to copy

Definition at line 43 of file Point.h.

43:x(other.x),y(other.y) { }

## ◆ Point() [3/3]

 LibBoard::Point::Point ( double xc, double yc )
inline

Point constructor.

Parameters
 xc The point's first coordinate. yc The point's second coordinate.

Definition at line 58 of file Point.h.

58:x(xc),y(yc) { }

## ◆ get()

 void LibBoard::Point::get ( double & xout, double & yout ) const
inline

Get the values of the x and y values.

Parameters
 xout Reference to the x to be set. yout Reference to the y to be set.

Definition at line 103 of file Point.h.

104{
105 xout = x;
106 yout = y;
107}

References x, and y.

## ◆ norm()

 double LibBoard::Point::norm ( ) const
inline

Definition at line 221 of file Point.h.

222{
223 return sqrt( x*x + y*y );
224}

Referenced by LibBoard::Text::rotate().

## ◆ operator*=()

 Point & LibBoard::Point::operator*= ( double s )
inline

Definition at line 162 of file Point.h.

163{
164 x *= s;
165 y *= s;
166 return *this;
167}

## ◆ operator+=()

 Point & LibBoard::Point::operator+= ( const Point & other )
inline

Definition at line 146 of file Point.h.

147{
148 x += other.x;
149 y += other.y;
150 return *this;
151}

References x, and y.

## ◆ operator-()

 Point LibBoard::Point::operator- ( )
inline

Definition at line 226 of file Point.h.

227{
228 return Point( -x, -y );
229}

References Point().

## ◆ operator-=()

 Point & LibBoard::Point::operator-= ( const Point & other )
inline

Definition at line 154 of file Point.h.

155{
156 x -= other.x;
157 y -= other.y;
158 return *this;
159}

References x, and y.

## ◆ operator/=()

 Point & LibBoard::Point::operator/= ( double s )
inline

Definition at line 170 of file Point.h.

171{
172 x /= s;
173 y /= s;
174 return *this;
175}

## ◆ operator=()

 Point & LibBoard::Point::operator= ( const Point & other )
default

Default assignment operator.

Parameters
 other point to copy.

## ◆ rotate() [1/2]

 Point & LibBoard::Point::rotate ( double angle )
inline

Rotate the point with a given angle around the origin (0,0)

Parameters
 angle The rotation angle.

Definition at line 190 of file Point.h.

191{
192 double newx = cos( angle ) * Point::x - sin( angle ) * Point::y;
193 double newy = sin( angle ) * Point::x + cos( angle ) * Point::y;
194 x = newx;
195 y = newy;
196 return *this;
197}

## ◆ rotate() [2/2]

 Point & LibBoard::Point::rotate ( double angle, const Point & center )
inline

Definition at line 206 of file Point.h.

207{
208 (*this) -= center;
209 (*this).rotate( angle );
210 (*this) += center;
211 return *this;
212}
Point center(const std::vector< Point > &points)

## ◆ rotated() [1/2]

 Point LibBoard::Point::rotated ( double angle ) const
inline

Rotate the point with a given angle around the origin (0,0)

Parameters
 angle The rotation angle.
Returns
The rotated point.

Definition at line 200 of file Point.h.

201{
202 return Point(*this).rotate( angle );
203}

References Point().

Referenced by LibBoard::Ellipse::rotate().

## ◆ rotated() [2/2]

 Point LibBoard::Point::rotated ( double angle, const Point & center ) const
inline

Definition at line 215 of file Point.h.

216{
217 return Point(*this).rotate( angle, center );
218}

References Point().

## ◆ y

The documentation for this struct was generated from the following file: