ellipsemodifier.h

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

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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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 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 */
#ifndef _graphicsproceduralellipsemodifier_h
#define _graphicsproceduralellipsemodifier_h

#include "Graphics/Procedural/Texture/texturemodifier.h"

namespace Mezzanine
{
    namespace Graphics
    {
        namespace Procedural
        {
            ///////////////////////////////////////////////////////////////////////////////
            /// @brief A modifier that draws a simple coloured ellipse onto the texture.
            /// @details
            ///////////////////////////////////////
            class MEZZ_LIB EllipseModifier : public TextureModifier
            {
            protected:
                /// @internal
                /// @brief The colour of the ellipse to apply to the texture.
                ColourValue FillColour;
                /// @internal
                /// @brief The left edge of the ellipse in relative coordinates.
                Real PositionXRel;
                /// @internal
                /// @brief The top edge of the ellipse in relative coordinates.
                Real PositionYRel;
                /// @internal
                /// @brief The horizontal radius of the ellipse in relative coordinates.
                Real RadiusXRel;
                /// @internal
                /// @brief The vertical radius of the ellipse in relative coordinates.
                Real RadiusYRel;
                /// @internal
                /// @brief The left edge adjustment of the ellipse after relative coordinates are calculated.
                Integer PositionXAdj;
                /// @internal
                /// @brief The top edge adjustment of the ellipse after relative coordinates are calculated.
                Integer PositionYAdj;
                /// @internal
                /// @brief The horizontal radius adjustment of the ellipse after relative coordinates are calculated.
                Integer RadiusXAdj;
                /// @internal
                /// @brief The vertical radius adjustment of the ellipse after relative coordinates are calculated.
                Integer RadiusYAdj;

                /// @internal
                /// @brief Convenience method for placing a pixel for the ellipse.
                /// @param XPos The position on the X axis to place the pixel.
                /// @param YPos The position on the Y axis to place the pixel.
                /// @param Buffer A reference to the buffer being worked on.
                void PutPixel(const Integer XPos, const Integer YPos, TextureBuffer& Buffer);
            public:
                /// @brief Blank constructor.
                EllipseModifier();
                /// @brief Class destructor.
                virtual ~EllipseModifier();

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

                /// @copydoc TextureModifier::Modify(TextureBuffer&)
                virtual void Modify(TextureBuffer& Buffer);
                /// @copydoc TextureModifier::GetName() const
                virtual String GetName() const;

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

                /// @brief Sets the colour of the ellipse to be generated.
                /// @param Colour The colour of the ellipse to generate.  Initial Value: 1.0, 1.0, 1.0, 1.0.
                /// @return Returns a reference to this.
                EllipseModifier& SetColour(const ColourValue& Colour);
                /// @brief Sets the colour of the ellipse to be generated.
                /// @param Red The Red component for the colour of the ellipse to generate.  Initial Value: 1.0.
                /// @param Green The Green component for the colour of the ellipse to generate.  Initial Value: 1.0.
                /// @param Blue The Blue component for the colour of the ellipse to generate.  Initial Value: 1.0.
                /// @param Alpha The Alpha component for the colour of the ellipse to generate.  Initial Value: 1.0.
                /// @return Returns a reference to this.
                EllipseModifier& SetColour(const Real Red, const Real Green, const Real Blue, const Real Alpha = 1.0);
                /// @brief Sets the colour of the ellipse to be generated.
                /// @param Red The Red component for the colour of the ellipse to generate.  Initial Value: 255.
                /// @param Green The Green component for the colour of the ellipse to generate.  Initial Value: 255.
                /// @param Blue The Blue component for the colour of the ellipse to generate.  Initial Value: 255.
                /// @param Alpha The Alpha component for the colour of the ellipse to generate.  Initial Value: 255.
                /// @return Returns a reference to this.
                EllipseModifier& SetColour(const UInt8 Red, const UInt8 Green, const UInt8 Blue, const UInt8 Alpha);

                /// @brief Sets the relative position and radius of this ellipse..
                /// @param XPosition The left edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param YPosition The top edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param XRadius The horizontal radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param YRadius The vertical radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @return Returns a reference to this.
                EllipseModifier& SetEllipse(const Real XPosition, const Real YPosition, const Real XRadius, const Real YRadius);
                /// @brief Sets the offsets for the position and radius of this ellipse.
                /// @param XPosition The left edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param YPosition The top edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param XRadius The horizontal radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param YRadius The vertical radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetEllipse(const Integer XPosition, const Integer YPosition, const Integer XRadius, const Integer YRadius);
                /// @brief Sets the relative and offset values for the ellipse.
                /// @param XPositionRel The left edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param YPositionRel The top edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param XRadiusRel The horizontal radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param YRadiusRel The vertical radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param XPositionAdj The left edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param YPositionAdj The top edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param XRadiusAdj The horizontal radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param YRadiusAdj The vertical radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetEllipse(const Real XPositionRel, const Real YPositionRel, const Real XRadiusRel, const Real YRadiusRel, const Integer XPositionAdj, const Integer YPositionAdj, const Integer XRadiusAdj, const Integer YRadiusAdj);

                /// @brief Sets the relative and offset values for the ellipse position.
                /// @param XPositionRel The left edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param YPositionRel The top edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param XPositionAdj The left edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param YPositionAdj The top edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetPosition(const Real XPositionRel, const Real YPositionRel, const Integer XPositionAdj, const Integer YPositionAdj);
                /// @brief Sets the relative and offset values for the ellipse radius.
                /// @param XRadiusRel The horizontal radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param YRadiusRel The vertical radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @param XRadiusAdj The horizontal radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @param YRadiusAdj The vertical radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetRadius(const Real XRadiusRel, const Real YRadiusRel, const Integer XRadiusAdj, const Integer YRadiusAdj);

                /// @brief Sets the relative component of the left edge.
                /// @param X The left edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @return Returns a reference to this.
                EllipseModifier& SetXPositionRel(const Real X);
                /// @brief Sets the relative component of the top edge.
                /// @param Y The top edge of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @return Returns a reference to this.
                EllipseModifier& SetYPositionRel(const Real Y);
                /// @brief Sets the relative component of the horizontal radius.
                /// @param X The horizontal radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @return Returns a reference to this.
                EllipseModifier& SetXRadiusRel(const Real X);
                /// @brief Sets the relative component of the vertical radius.
                /// @param Y The vertical radius of the ellipse in relative coordinates.  Initial Value: 0.5.
                /// @return Returns a reference to this.
                EllipseModifier& SetYRadiusRel(const Real Y);
                /// @brief Sets the absolute component of the left edge.
                /// @param X The left edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetXPositionAdj(const Integer X);
                /// @brief Sets the absolute component of the top edge.
                /// @param Y The top edge adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetYPositionAdj(const Integer Y);
                /// @brief Sets the absolute component for the horizontal radius.
                /// @param X The horizontal radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetXRadiusAdj(const Integer X);
                /// @brief Sets the absolute component for the vertical radius.
                /// @param Y The vertical radius adjustment of the ellipse after relative coordinates are calculated.  Initial Value: 0.
                /// @return Returns a reference to this.
                EllipseModifier& SetYRadiusAdj(const Integer Y);
            };//EllipseModifier
        }//Procedural
    }//Graphics
}//Mezzanine

#endif