Report_Min_Z.hxx

// 
// Copyright (C) 2006 James M. Lawrence.  All rights reserved.
// 
// software: esve-1.0.3
// file: esve/components/dim4/Report_Min_Z.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_components_dim4_Report_Min_Z_hxx
#define esve_components_dim4_Report_Min_Z_hxx

#include <esve/components/dim3/Min_Z.hxx>
#include <esve/engine/dim4/Make_Frame.hxx>
#include <esve/types/quat.hxx>

namespace esve { namespace components { namespace dim4 {


template< typename T_Frame >
class Report_Min_Z
    : virtual public components::dim3::Min_Z,
      public T_Frame
{
private:
#if !defined(NDEBUG)
    template< class U > static void m_unused( const U & ) { }

    void m_requirements_1()
    {
        typedef typename T_Frame::Make_Frame_Parameter_Target Target ;
        typedef typename T_Frame::Make_Frame_Parameter_Frame Frame ;

        engine::dim4::Make_Frame<Target, Frame>* r =
            dynamic_cast<T_Frame*>(this) ;
        m_unused(r) ;
    }

    struct m_Requirements
    {
        m_Requirements()
        {
            typedef void (Report_Min_Z::*R)() ;
            R r = &Report_Min_Z::m_requirements_1 ;
            m_unused(r) ;
        }
    } m_requirements ;
#endif // !defined(NDEBUG)
    
    struct m_Find_Min
    {
        types::real min_z ;

        m_Find_Min( types::real min_z_ )
            : min_z(min_z_) { }

        void operator()( const types::quat & a )
        {
            if( a.z() < min_z )
            {
                min_z = a.z() ;
            }
        }
    } ;

    struct Private
    {
        types::real initial_min_z ;
        types::real min_z ;

        Private() ;
    } ;

    Report_Min_Z( const Report_Min_Z & ) ;
    Report_Min_Z & operator=( const Report_Min_Z & ) ;

    Private m ;

public:
    Report_Min_Z() ;

    template< typename T_Arg >
    Report_Min_Z( T_Arg & ) ;

    template< typename T_Arg >
    Report_Min_Z( const T_Arg & ) ;

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

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

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

    ~Report_Min_Z() ;

protected:
    void apply_transform() ;
} ;

}}} // namespace esve::components::dim4

#include <esve/components/dim4/Report_Min_Z.template.cxx>

#endif

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