gradientgenerator.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
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
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    The Mezzanine Engine is distributed in the hope that it will be useful,
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with The Mezzanine Engine.  If not, see <http://www.gnu.org/licenses/>.
*/
/* The original authors have included a copy of the license specified above in the
   'Docs' folder. See 'gpl.txt'
*/
/* We welcome the use of the Mezzanine engine to anyone, including companies who wish to
   Build professional software and charge for their product.

   However there are some practical restrictions, so if your project involves
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   Joseph Toppi - toppij@gmail.com
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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
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 -----------------------------------------------------------------------------
 */
#ifndef _graphicsproceduralgradientgenerator_h
#define _graphicsproceduralgradientgenerator_h

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

namespace Mezzanine
{
    namespace Graphics
    {
        namespace Procedural
        {
            ///////////////////////////////////////////////////////////////////////////////
            /// @brief Fills full image with given colour gradients.
            /// @details Each corner of the image has unique colour.
            ///////////////////////////////////////
            class MEZZ_LIB GradientGenerator : public TextureGenerator
            {
            protected:
                /// @internal
                /// @brief The colour of the top-left corner.
                ColourValue GenTopLeftColour;
                /// @internal
                /// @brief The colour of the top-right corner.
                ColourValue GenTopRightColour;
                /// @internal
                /// @brief The colour of the bottom-left corner.
                ColourValue GenBottomLeftColour;
                /// @internal
                /// @brief The colour of the bottom-right corner.
                ColourValue GenBottomRightColour;
            public:
                /// @brief Class constructor.
                GradientGenerator();
                /// @brief Class destructor.
                virtual ~GradientGenerator();

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

                /// @copydoc TextureGenerator::AddToTextureBuffer(TextureBuffer&) const
                virtual void AddToTextureBuffer(TextureBuffer& Buffer) const;
                /// @copydoc TextureGenerator::GetName() const
                virtual String GetName() const;

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

                /// @brief Sets the colour of the top-left corner.
                /// @param Colour The colour to be applied to the top-left corner of the generated image.
                /// @return Returns a reference to this.
                GradientGenerator& SetTopLeftColour(const ColourValue& Colour);
                /// @brief Sets the colour of the top-left corner.
                /// @param Red The Red component for the top-left corner colour.  Range: [0.0, 1.0].
                /// @param Green The Green component for the top-left corner colour.  Range: [0.0, 1.0].
                /// @param Blue The Blue component for the top-left corner colour.  Range: [0.0, 1.0].
                /// @param Alpha The Alpha component for the top-left corner colour.  Range: [0.0, 1.0].
                /// @return Returns a reference to this.
                GradientGenerator& SetTopLeftColour(const Real Red, const Real Green, const Real Blue, const Real Alpha = 1.0);
                /// @brief Sets the colour of the top-right corner.
                /// @param Colour The colour to be applied to the top-right corner of the generated image.
                /// @return Returns a reference to this.
                GradientGenerator& SetTopRightColour(const ColourValue& Colour);
                /// @brief Sets the colour of the top-right corner.
                /// @param Red The Red component for the top-right corner colour.  Range: [0.0, 1.0].
                /// @param Green The Green component for the top-right corner colour.  Range: [0.0, 1.0].
                /// @param Blue The Blue component for the top-right corner colour.  Range: [0.0, 1.0].
                /// @param Alpha The Alpha component for the top-right corner colour.  Range: [0.0, 1.0].
                /// @return Returns a reference to this.
                GradientGenerator& SetTopRightColour(const Real Red, const Real Green, const Real Blue, const Real Alpha = 1.0);
                /// @brief Sets the colour of the bottom-left corner.
                /// @param Colour The colour to be applied to the bottom-left corner of the generated image.
                /// @return Returns a reference to this.
                GradientGenerator& SetBottomLeftColour(const ColourValue& Colour);
                /// @brief Sets the colour of the bottom-left corner.
                /// @param Red The Red component for the bottom-left corner colour.  Range: [0.0, 1.0].
                /// @param Green The Green component for the bottom-left corner colour.  Range: [0.0, 1.0].
                /// @param Blue The Blue component for the bottom-left corner colour.  Range: [0.0, 1.0].
                /// @param Alpha The Alpha component for the bottom-left corner colour.  Range: [0.0, 1.0].
                /// @return Returns a reference to this.
                GradientGenerator& SetBottomLeftColour(const Real Red, const Real Green, const Real Blue, const Real Alpha = 1.0);
                /// @brief Sets the colour of the bottom-right corner.
                /// @param Colour The colour to be applied to the bottom-right corner of the generated image.
                /// @return Returns a reference to this.
                GradientGenerator& SetBottomRightColour(const ColourValue& Colour);
                /// @brief Sets the colour of the bottom-right corner.
                /// @param Red The Red component for the bottom-right corner colour.  Range: [0.0, 1.0].
                /// @param Green The Green component for the bottom-right corner colour.  Range: [0.0, 1.0].
                /// @param Blue The Blue component for the bottom-right corner colour.  Range: [0.0, 1.0].
                /// @param Alpha The Alpha component for the bottom-right corner colour.  Range: [0.0, 1.0].
                /// @return Returns a reference to this.
                GradientGenerator& SetBottomRightColour(const Real Red, const Real Green, const Real Blue, const Real Alpha = 1.0);
                /// @brief Sets the colours of the image corners.
                /// @param TopLeft The colour to be applied to the top-left corner of the generated image.
                /// @param TopRight The colour to be applied to the top-right corner of the generated image.
                /// @param BottomLeft The colour to be applied to the bottom-left corner of the generated image.
                /// @param BottomRight The colour to be applied to the bottom-right corner of the generated image.
                /// @return Returns a reference to this.
                GradientGenerator& SetColours(const ColourValue& TopLeft, const ColourValue& TopRight, const ColourValue& BottomLeft, const ColourValue& BottomRight);
            };//GradientGenerator
        }//Procedural
    }//Graphics
}//Mezzanine

#endif