LibBoard::Point Struct Reference

#include <Board/Point.h>

Public Member Functions
	Point ()
	Point (const Point &other)
	Point (double xc, double yc)
Point &	rotate (double angle)
void	get (double &xout, double &yout) const
Point	rotated (double angle) const
Point &	rotate (double angle, const Point &center)
Point	rotated (double angle, const Point &center) const
Point &	operator+= (const Point &other)
Point &	operator-= (const Point &other)
Point &	operator*= (double s)
Point &	operator/= (double s)
Point	operator- ()
double	norm () const

Data Fields
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.

Constructor & Destructor Documentation

LibBoard::Point::Point ( )

inline

Point constructor.

Definition at line 36 of file Point.h.

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

:x(0.0),y(0.0) { } 

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

inline

Point constructor.

Parameters

other

point to copy

Definition at line 43 of file Point.h.

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

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 51 of file Point.h.

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

Member Function Documentation

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 96 of file Point.h.

References x, and y.

Referenced by LibBoard::Dot::rotate(), LibBoard::Line::rotate(), LibBoard::Line::rotated(), and LibBoard::Arrow::rotated().

{
  xout = x;
  yout = y;
}

double LibBoard::Point::norm ( ) const

inline

Definition at line 214 of file Point.h.

Referenced by LibBoard::Rectangle::flushCairo(), LibBoard::Rectangle::flushSVG(), and LibBoard::Text::rotate().

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

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

inline

Definition at line 155 of file Point.h.

{
  x *= s;
  y *= s;
  return *this;
}

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

inline

Definition at line 139 of file Point.h.

References x, and y.

{
  x += other.x;
  y += other.y;
  return *this;
}

Point LibBoard::Point::operator- ( )

inline

Definition at line 219 of file Point.h.

References Point().

{
  return Point( -x, -y );
}

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

inline

Definition at line 147 of file Point.h.

References x, and y.

{
  x -= other.x;
  y -= other.y;
  return *this;
}

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

inline

Definition at line 163 of file Point.h.

{
  x /= s;
  y /= s;
  return *this;
}

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 183 of file Point.h.

References x, and y.

Referenced by rotate(), LibBoard::Dot::rotate(), LibBoard::Line::rotate(), LibBoard::Circle::rotate(), LibBoard::Text::rotate(), LibBoard::Line::rotated(), and LibBoard::Arrow::rotated().

{
  double newx = cos( angle ) * Point::x - sin( angle ) * Point::y; 
  double newy = sin( angle ) * Point::x + cos( angle ) * Point::y;
  x = newx;
  y = newy;
  return *this;
}

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

inline

Definition at line 199 of file Point.h.

References rotate().

{
  (*this) -= center;
  (*this).rotate( angle );
  (*this) += center;
  return *this;
}

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 193 of file Point.h.

References Point().

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

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

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

inline

Definition at line 208 of file Point.h.

References Point().

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

Field Documentation

double LibBoard::Point::x

The point's first coordinate

Definition at line 29 of file Point.h.

Referenced by LibBoard::Ellipse::boundingBox(), LibBoard::Text::boundingBox(), LibBoard::Board::drawTriangle(), LibBoard::Board::fillGouraudTriangle(), LibBoard::Board::fillTriangle(), LibBoard::Ellipse::flushCairo(), LibBoard::Circle::flushCairo(), LibBoard::Arc::flushCairo(), LibBoard::Ellipse::flushFIG(), LibBoard::Text::flushFIG(), LibBoard::GouraudTriangle::flushPostscript(), LibBoard::Ellipse::flushPostscript(), LibBoard::Arc::flushPostscript(), LibBoard::Text::flushPostscript(), LibBoard::GouraudTriangle::flushSVG(), LibBoard::Ellipse::flushSVG(), LibBoard::Circle::flushSVG(), LibBoard::Arc::flushSVG(), LibBoard::Text::flushSVG(), LibBoard::Ellipse::flushTikZ(), LibBoard::Circle::flushTikZ(), LibBoard::Arc::flushTikZ(), LibBoard::Text::flushTikZ(), get(), LibBoard::operator!=(), LibBoard::operator*(), LibBoard::operator+(), operator+=(), LibBoard::operator-(), operator-=(), LibBoard::operator/(), LibBoard::operator==(), rotate(), LibBoard::Ellipse::rotate(), LibBoard::Text::rotate(), LibBoard::ShapeList::scale(), LibBoard::Board::scale(), LibBoard::Path::scale(), LibBoard::Group::scale(), LibBoard::Line::scale(), LibBoard::Line::scaled(), LibBoard::Arrow::scaled(), and LibBoard::Board::State::unit().

double LibBoard::Point::y

The point's second coordinate

Definition at line 30 of file Point.h.

Referenced by LibBoard::Ellipse::boundingBox(), LibBoard::Text::boundingBox(), LibBoard::Board::drawTriangle(), LibBoard::Board::fillGouraudTriangle(), LibBoard::Board::fillTriangle(), LibBoard::Ellipse::flushCairo(), LibBoard::Circle::flushCairo(), LibBoard::Arc::flushCairo(), LibBoard::Ellipse::flushFIG(), LibBoard::Text::flushFIG(), LibBoard::GouraudTriangle::flushPostscript(), LibBoard::Ellipse::flushPostscript(), LibBoard::Arc::flushPostscript(), LibBoard::Text::flushPostscript(), LibBoard::GouraudTriangle::flushSVG(), LibBoard::Ellipse::flushSVG(), LibBoard::Circle::flushSVG(), LibBoard::Arc::flushSVG(), LibBoard::Text::flushSVG(), LibBoard::Ellipse::flushTikZ(), LibBoard::Circle::flushTikZ(), LibBoard::Arc::flushTikZ(), LibBoard::Text::flushTikZ(), get(), LibBoard::operator!=(), LibBoard::operator*(), LibBoard::operator+(), operator+=(), LibBoard::operator-(), operator-=(), LibBoard::operator/(), LibBoard::operator==(), rotate(), LibBoard::Ellipse::rotate(), LibBoard::Text::rotate(), LibBoard::ShapeList::scale(), LibBoard::Board::scale(), LibBoard::Path::scale(), LibBoard::Group::scale(), LibBoard::Line::scale(), LibBoard::Line::scaled(), LibBoard::Arrow::scaled(), and LibBoard::Board::State::unit().

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

• Point.h