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MyEllipse Class Reference

List of all members.

Detailed Description

Oscillating ellipse

\[ x = (A + \widehat{A} \cos(2\pi t/T)) \cos(\xi) \]

\[ y = \frac{\sin(\xi)}{A + \widehat{A} \cos(2\pi t/T)} \]

Note that cross-sectional area is conserved.

Definition at line 49 of file osc_quarter_ellipse.cc.


Public Member Functions

 MyEllipse (const double &a, const double &a_hat, const double &period, Time *time_pt)
 Constructor: Pass initial x-half axis, amplitude of x-variation, period of oscillation and pointer to time object.
virtual ~MyEllipse ()
 Destructor: Empty.
void position (const Vector< double > &xi, Vector< double > &r) const
 Current position vector to material point at Lagrangian coordinate xi.
void position (const unsigned &t, const Vector< double > &xi, Vector< double > &r) const
 Parametrised position on object: r(xi). Evaluated at previous time level. t=0: current time; t>0: previous time level.

Private Attributes

double A
 x-half axis
double A_hat
 Amplitude of variation in x-half axis.
double T
 Period of oscillation.
Time * Time_pt
 Pointer to time object.

Constructor & Destructor Documentation

MyEllipse::MyEllipse ( const double &  a,
const double &  a_hat,
const double &  period,
Time *  time_pt 
) [inline]

Constructor: Pass initial x-half axis, amplitude of x-variation, period of oscillation and pointer to time object.

Definition at line 56 of file osc_quarter_ellipse.cc.

virtual MyEllipse::~MyEllipse (  )  [inline, virtual]

Destructor: Empty.

Definition at line 61 of file osc_quarter_ellipse.cc.


Member Function Documentation

void MyEllipse::position ( const unsigned &  t,
const Vector< double > &  xi,
Vector< double > &  r 
) const [inline]

Parametrised position on object: r(xi). Evaluated at previous time level. t=0: current time; t>0: previous time level.

Definition at line 79 of file osc_quarter_ellipse.cc.

References A, A_hat, T, and Time_pt.

void MyEllipse::position ( const Vector< double > &  xi,
Vector< double > &  r 
) const [inline]

Current position vector to material point at Lagrangian coordinate xi.

Definition at line 65 of file osc_quarter_ellipse.cc.

References A, A_hat, T, and Time_pt.


Member Data Documentation

double MyEllipse::A [private]

x-half axis

Definition at line 94 of file osc_quarter_ellipse.cc.

Referenced by position().

double MyEllipse::A_hat [private]

Amplitude of variation in x-half axis.

Definition at line 97 of file osc_quarter_ellipse.cc.

Referenced by position().

double MyEllipse::T [private]

Period of oscillation.

Definition at line 100 of file osc_quarter_ellipse.cc.

Referenced by position().

Time* MyEllipse::Time_pt [private]

Pointer to time object.

Definition at line 103 of file osc_quarter_ellipse.cc.

Referenced by position().


The documentation for this class was generated from the following file:
Generated on Mon Aug 10 11:34:05 2009 by  doxygen 1.4.7