Transform.hxx

// 
// Copyright (C) 2006 James M. Lawrence.  All rights reserved.
// 
// software: esve-1.0.3
// file: esve/engine/dim3/impl/Transform.hxx
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. The origin of this software must not be misrepresented; you must
//    not claim that you wrote the original software.  If you use this
//    software in a product, an acknowledgment in the product 
//    documentation would be appreciated but is not required.
// 
// 3. Altered source versions must be plainly marked as such, and must
//    not be misrepresented as being the original software.
// 
// 4. The name of the author may not be used to endorse or promote
//    products derived from this software without specific prior written
//    permission.
// 
// THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY,
// AND WITH NO CLAIM AS TO ITS SUITABILITY FOR ANY PURPOSE.  IN NO EVENT
// SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM WHATSOEVER MADE IN CONNECTION
// TO THIS SOFTWARE.
// 
#ifndef esve_engine_dim3_impl_Transform_hxx
#define esve_engine_dim3_impl_Transform_hxx

#include <esve/engine/dim3/Transform.hxx>
#include <esve/base/dim3/Transform.hxx>
#include <esve/types/quat.hxx>
#include <esve/types/pure.hxx>

namespace esve { namespace engine { namespace dim3 { namespace impl {


class Transform
    : virtual public dim3::Transform
{
private:
    typedef
    base::dim3::Transform<types::real>
    m_Transform ;

    m_Transform m ;

public:
    Transform()
        : dim3::Transform(),
          m() { }

    Transform( const types::quat & rotation,
               const types::pure & translation = types::pure(),
               types::real scaling = types::real(1) )
        : dim3::Transform(),
          m(rotation,
            translation,
            scaling) { }

    Transform( const Transform & a )
        : dim3::Transform(),
          m(a.m) { }

    Transform( const dim3::Transform & a )
        : dim3::Transform(),
          m(a.rotation(),
            a.translation(),
            a.scaling()) { }

    Transform & operator=( const Transform & a )
    {
        m = a.m ;
        return *this ;
    }

    Transform & operator=( const dim3::Transform & a )
    {
        m.rotation(a.rotation()) ;
        m.translation(a.translation()) ;
        m.scaling(a.scaling()) ;
        return *this ;
    }

    const types::quat & rotation() const
    {
        return m.rotation() ;
    }

    void rotation( const types::quat & a )
    {
        m.rotation(a) ;
    }

    const types::pure & translation() const
    {
        return m.translation() ;
    }

    void translation( const types::pure & a )
    {
        m.translation(a) ;
    }

    types::real scaling() const
    {
        return m.scaling() ;
    }

    void scaling( types::real a )
    {
        m.scaling(a) ;
    }

    void left_act( const Transform & a )
    {
        m.left_act(a.m) ;
    }

    void left_act( const dim3::Transform & a )
    {
        m.left_act(m_Transform(a.rotation(),
                               a.translation(),
                               a.scaling())) ;
    }

    void right_act( const Transform & a )
    {
        m.right_act(a.m) ;
    }

    void right_act( const dim3::Transform & a )
    {
        m.right_act(m_Transform(a.rotation(),
                                a.translation(),
                                a.scaling())) ;
    }

    void act( const Transform & action,
              const Transform & basis )
    {
        m.act(action.m, basis.m) ;
    }

    void act( const dim3::Transform & action,
              const dim3::Transform & basis )
    {
        m.act(m_Transform(action.rotation(),
                          action.translation(),
                          action.scaling()),
              m_Transform(basis.rotation(),
                          basis.translation(),
                          basis.scaling())) ;
    }

    void rotate( types::real angle,
                 const types::pure & axis,
                 const dim3::Transform & basis = IDENTITY ) ;

    void translate( const types::pure & dt,
                    const dim3::Transform & basis = IDENTITY ) ;

    void scalate( types::real ds,
                  const dim3::Transform & basis = IDENTITY ) ;

    void assign( const Transform & a )
    {
        m = a.m ;
    }

    void assign( const dim3::Transform & a )
    {
        rotation(a.rotation()) ;
        translation(a.translation()) ;
        scaling(a.scaling()) ;
    }

    void identity()
    {
        m.identity() ;
    }

    void invert()
    {
        m.invert() ;
    }

    void normalize()
    {
        m.normalize() ;
    }

    bool operator==( const Transform & a ) const
    {
        return m.operator==(a.m) ;
    }

    bool operator==( const dim3::Transform & a ) const
    {
        return m.operator==(m_Transform(a.rotation(),
                                        a.translation(),
                                        a.scaling())) ;
    }
    
    bool operator!=( const Transform & a ) const
    {
        return m.operator!=(a.m) ;
    }

    bool operator!=( const dim3::Transform & a ) const
    {
        return m.operator!=(m_Transform(a.rotation(),
                                        a.translation(),
                                        a.scaling())) ;
    }

    ~Transform() { }
} ;

}}}} // namespace esve::engine::dim3::impl

#endif

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