TAPsTriangle.cpp

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/******************************************************************************
TAPsTriangle.cpp

Triangle class is a class for 3D Triangle composed of three Vector3<T> as their 
vertices. 

Example:
          2-------1
           \      |
            \     |
             \    |
              \   |
               \  |
                \ |
                 \|
                  0

SUKITTI PUNAK   (03/11/2006)
UPDATE          (03/15/2006)
******************************************************************************/
#include "TAPsTriangle.hpp"
// Using Inclusion Model (i.e. definitions are included in declarations)
//                       (this name.cpp is included in name.hpp)
// Each friend is defined directly inside its declaration.

BEGIN_NAMESPACE_TAPs
//=============================================================================
// Constructors and Destructor
//-----------------------------------------------------------------------------
template <typename T>
Triangle<T>::Triangle ( Vector3<T> V0, Vector3<T> V1, Vector3<T> V2 )
{
    m_vVertex[0] = V0;
    m_vVertex[1] = V1;
    m_vVertex[2] = V2;
}
//-----------------------------------------------------------------------------
template <typename T>
Triangle<T>::Triangle ( const T[3] V0, const T[3] V1, const T[3] V2 )
{
    m_vVertex[0].SetXYZ( V0[0], V0[1], V0[2] );
    m_vVertex[1].SetXYZ( V1[0], V1[1], V1[2] );
    m_vVertex[2].SetXYZ( V2[0], V2[1], V2[2] );
}
//-----------------------------------------------------------------------------
template <typename T>
Triangle<T>::Triangle ( T V0x, T V0y, T V0z, 
                        T V1x, T V1y, T V1z, 
                        T V2x, T V2y, T V2z )
{
    m_vVertex[0].SetXYZ( V0x, V0y, V0z );
    m_vVertex[1].SetXYZ( V1x, V1y, V1z );
    m_vVertex[2].SetXYZ( V2x, V2y, V2z );
}
//-----------------------------------------------------------------------------
template <typename T>
Triangle<T>::Triangle ( const Triangle<T> & tri )
{
    m_vVertex[0] = tri.m_vVertex[0];
    m_vVertex[1] = tri.m_vVertex[1];
    m_vVertex[2] = tri.m_vVertex[2];
}
//-----------------------------------------------------------------------------
template <typename T>
Triangle<T>::~Triangle ()
{}
//-----------------------------------------------------------------------------
//=============================================================================
// Fn(s) for Normal
//-----------------------------------------------------------------------------
template <typename T>
inline Vector3<T> Triangle<T>::CalNormal () const
{
    return ( V1-V0 ).Cross( V2-V0 );
}
//-----------------------------------------------------------------------------
//=============================================================================
// Assignment (Conversion) Operator
//-----------------------------------------------------------------------------
template <typename T>
inline Triangle<T> & Triangle<T>::operator= ( Triangle<T> const & tri )
{   
    m_vVertex[0] = tri.m_vVertex[0];
    m_vVertex[1] = tri.m_vVertex[1];
    m_vVertex[2] = tri.m_vVertex[2];
    return *this;
}
//-----------------------------------------------------------------------------
//=============================================================================
END_NAMESPACE_TAPs
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