Geom::Rotate Class Reference

Notionally an Geom::Matrix corresponding to rotation about the origin. More...

Public Member Functions
	Rotate (Coord const theta)
	Constructs a Rotate transformation corresponding to an angle. More...
	Rotate (Point const &p)
	Rotate (Coord const x, Coord const y)
Rotate	inverse () const
bool	operator!= (Rotate const &o) const
Rotate &	operator*= (Rotate const &b)
bool	operator== (Rotate const &o) const

Public Attributes
Point	vec

Detailed Description

Notionally an Geom::Matrix corresponding to rotation about the origin.

Behaves like Geom::Matrix for multiplication.

Constructor & Destructor Documentation

Geom::Rotate::Rotate ( Coord const  theta )

explicit

Constructs a Rotate transformation corresponding to an angle.

Parameters

theta

the rotation angle in radians about the origin

See also

Geom::Rotate_degrees

Angle direction in Inkscape code: If you use the traditional mathematics convention that y increases upwards, then positive angles are anticlockwise as per the mathematics convention. If you take the common non-mathematical convention that y increases downwards, then positive angles are clockwise, as is common outside of mathematics.

Geom::Rotate::Rotate ( Point const &  p )

explicit

Geom::Rotate::Rotate ( Coord const  x, Coord const  y  )

explicit

Member Function Documentation

Rotate Geom::Rotate::inverse

(

)

const

bool Geom::Rotate::operator!=

(

Rotate const &

o

)

const

Rotate& Geom::Rotate::operator*=

(

Rotate const &

b

)

bool Geom::Rotate::operator==

(

Rotate const &

o

)

const

Member Data Documentation

Point Geom::Rotate::vec