torusgenerator.h

// © Copyright 2010 - 2016 BlackTopp Studios Inc.
/* This file is part of The Mezzanine Engine.

    The Mezzanine Engine is free software: you can redistribute it and/or modify
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    GNU General Public License for more details.

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*/
/* The original authors have included a copy of the license specified above in the
   'Docs' folder. See 'gpl.txt'
*/
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/*
 -----------------------------------------------------------------------------
 This source file is part of ogre-procedural

 For the latest info, see http://code.google.com/p/ogre-procedural/

 Copyright (c) 2010-2013 Michael Broutin

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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 */
#ifndef _graphicsproceduraltorusgenerator_h
#define _graphicsproceduraltorusgenerator_h

#include "Graphics/Procedural/Mesh/meshgenerator.h"

namespace Mezzanine
{
    namespace Graphics
    {
        namespace Procedural
        {
            ///////////////////////////////////////////////////////////////////////////////
            /// @brief A generator class for a torus mesh.
            /// @details
            ///////////////////////////////////////
            class MEZZ_LIB TorusGenerator : public MeshGenerator<TorusGenerator>
            {
            protected:
                /// @internal
                /// @brief The radius of the primary ring of the torus.
                /// @remarks This radius does not encapsulate the complete AABB of the torus.  Add Toroidal radius to this value to get the full bounds.
                Real TorusPoloidalRadius;
                /// @internal
                /// @brief The radius of the secondary ring of the torus.
                /// @remarks This is the value for the "thickness" of the ring.
                Real TorusToroidalRadius;
                /// @internal
                /// @brief The resolution of the Poloidal ring.
                Whole NumPoloidalSeg;
                /// @internal
                /// @brief The resolution of the Toroidal ring.
                Whole NumToroidalSeg;
            public:
                /// @brief Class constructor.
                /// @param PoloidalRadius The radius of the primary ring of the torus.
                /// @param ToroidalRadius The radius of the secondary ring of the torus.
                /// @param PoloidalSeg The resolution of the primary ring of the torus.
                /// @param ToroidalSeg The resolution of the secondary ring of the torus.
                TorusGenerator(const Real PoloidalRadius, const Real ToroidalRadius, const Whole PoloidalSeg = 16, const Whole ToroidalSeg = 16);
                /// @brief Class destructor.
                virtual ~TorusGenerator();

                ///////////////////////////////////////////////////////////////////////////////
                // Utility

                /// @copydoc MeshGenerator::AddToTriangleBuffer(TriangleBuffer&) const
                virtual void AddToTriangleBuffer(TriangleBuffer& Buffer) const;

                ///////////////////////////////////////////////////////////////////////////////
                // Configuration

                /// @brief Sets the radius of the torus.
                /// @exception If the radius is set to 0 or less, a PARAMETERS_EXCEPTION will be thrown.
                /// @param PoloidalRadius The radius of the primary ring of the torus.
                /// @return Returns a reference to this.
                TorusGenerator& SetPoloidalRadius(const Real PoloidalRadius);
                /// @brief Sets the radius of the torus ring.  AKA it's thickness.
                /// @exception If the radius is set to 0 or less, a PARAMETERS_EXCEPTION will be thrown.
                /// @param ToroidalRadius The radius of the secondary ring of the torus.
                /// @return Returns a reference to this.
                TorusGenerator& SetToroidalRadius(const Real ToroidalRadius);

                /// @brief Sets the number of segments on the Poloidal ring.
                /// @exception If the number of segments is less than three, a PARAMETERS_EXCEPTION will be thrown.
                /// @param PoloidalSeg The resolution of the primary ring of the torus.
                /// @return Returns a reference to this.
                TorusGenerator& SetNumPoloidalSeg(const Whole PoloidalSeg);
                /// @brief Sets the number of segments along the guiding circle.
                /// @exception If the number of segments is less than three, a PARAMETERS_EXCEPTION will be thrown.
                /// @param ToroidalSegThe resolution of the secondary ring of the torus.
                /// @return Returns a reference to this.
                TorusGenerator& SetNumToroidalSeg(const Whole ToroidalSeg);
            };//TorusGenerator
        }//Procedural
    }//Graphics
}//Mezzanine

#endif