//-------------------------------------------------------------------------

//

//  File: OpenGLTorusParametricValues.cpp

//

//  Abstract: C++ class that implements methods for manipulating

//            parametric values.

//

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//-------------------------------------------------------------------------

//------------------------------------------------------------------------

#include "OpenGLTorusParametricValues.hpp"

//------------------------------------------------------------------------

//------------------------------------------------------------------------

#include <cmath>

//------------------------------------------------------------------------

//------------------------------------------------------------------------

#pragma mark -- Manipulating Parametric Values --

//------------------------------------------------------------------------

Parameter::Parameter( )

{

    theta.parameter = 0.0;

    theta.cosine    = 0.0;

    theta.sine      = 0.0;

} // Default Constructor

//------------------------------------------------------------------------

Parameter::Parameter(   const GLdouble theParameter, 

                        const GLdouble theCosineValue, 

                        const GLdouble theSineValue )

{

    theta.parameter = theParameter;

    theta.cosine    = theCosineValue;

    theta.sine      = theSineValue;

} // Constructor

//------------------------------------------------------------------------

GLdouble Parameter::parameter( ) const

{

    return theta.parameter;

} // Parameter::parameter

//------------------------------------------------------------------------

GLdouble Parameter::cos( ) const

{

    return theta.cosine;

} // Parameter::cos

//------------------------------------------------------------------------

GLdouble Parameter::sin( ) const

{

    return theta.sine;

} // Parameter::sin

//------------------------------------------------------------------------

Parameter Parameter::operator+=( const GLdouble theDelta )

{

    theta.parameter += theDelta;

    theta.cosine     = std::cos( theta.parameter );

    theta.sine       = std::sin( theta.parameter );

    return *this;

} // Parameter::operator+=

//------------------------------------------------------------------------

//------------------------------------------------------------------------