Ipelib
Public Member Functions | Public Attributes | Related Functions | List of all members
ipe::Linear Class Reference

#include <ipegeo.h>

Public Member Functions

 Linear ()
 
 Linear (Angle angle)
 
 Linear (double m11, double m21, double m12, double m22)
 
 Linear (String str)
 
Linear inverse () const
 
bool isIdentity () const
 
Vector operator* (const Vector &rhs) const
 
bool operator== (const Linear &rhs) const
 
double determinant () const
 

Public Attributes

double a [4]
 

Related Functions

(Note that these are not member functions.)

Streamoperator<< (Stream &stream, const Linear &rhs)
 
Vector operator* (const Vector &rhs) const
 
Linear operator* (const Linear &lhs, const Linear &rhs)
 

Detailed Description

Linear transformation in the plane (2x2 matrix).

Constructor & Destructor Documentation

ipe::Linear::Linear ( )
inline

Create identity matrix.

Referenced by ipe::Segment::snap().

Linear::Linear ( Angle  angle)
explicit

Create matrix representing a rotation by angle.

ipe::Linear::Linear ( double  m11,
double  m21,
double  m12,
double  m22 
)
inlineexplicit

Create linear matrix with given coefficients.

Linear::Linear ( String  str)
explicit

Parse string.

Member Function Documentation

Linear Linear::inverse ( ) const

Return inverse.

References a, and ipe::Matrix::Matrix().

Referenced by ipe::Arc::bbox().

bool ipe::Linear::isIdentity ( ) const
inline

Is this the identity matrix?

Vector ipe::Linear::operator* ( const Vector rhs) const
inline
bool ipe::Linear::operator== ( const Linear rhs) const
inline

Check for equality of two linear matrices.

References a.

double ipe::Linear::determinant ( ) const
inline

Return determinant of a linear matrix.

Friends And Related Function Documentation

Stream & operator<< ( Stream stream,
const Linear rhs 
)
related
Vector operator* ( const Vector rhs) const
related

Linear matrix times vector.

References ipe::Vector::x, and ipe::Vector::y.

Linear operator* ( const Linear lhs,
const Linear rhs 
)
related

Linear matrix multiplication.

References a.

Member Data Documentation

double ipe::Linear::a[4]

The documentation for this class was generated from the following files: