noisegenerator.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.

    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'
*/
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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 _graphicsproceduralnoisegenerator_h
#define _graphicsproceduralnoisegenerator_h

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

namespace Mezzanine
{
    namespace Graphics
    {
        namespace Procedural
        {
            ///////////////////////////////////////////////////////////////////////////////
            /// @brief Fills full image with noise in a given colour.
            /// @details High quality noise with various noise algorithms.
            ///////////////////////////////////////
            class MEZZ_LIB NoiseGenerator : public TextureGenerator
            {
            public:
                /// @brief Convenience typedef for a container of generated noise.
                typedef std::vector<Real> NoiseField;
            protected:
                /// @internal
                /// @brief The colour of the noise to be generated.
                ColourValue GenColour;
                /// @internal
                /// @brief The seed to be used for the random number generator.
                Whole GenSeed;
                /// @internal
                /// @brief The type of noise generator to use when generating the image.
                Procedural::NoiseType NType;

                /// @internal
                /// @brief Converts all of the values in a NoiseField to a 0-1 range.
                /// @param ToNormalize The NoiseField to be converted.
                /// @param MinVal The minimum value generated in the provided field.
                /// @param MaxVal The maximum value generated in the provided field.
                void FitToRange(NoiseField& ToNormalize, const Real MinVal, const Real MaxVal) const;
                /// @internal
                /// @brief Generates a grid of perlin noise.
                /// @param X The width of the field to generate.
                /// @param Y The height of the field to generate.
                /// @return Returns a container of generated perlin noise.
                NoiseField GeneratePerlinNoiseField(const Whole X, const Whole Y) const;
                /// @internal
                /// @brief Generates a grid of white noise.
                /// @param X The width of the field to generate.
                /// @param Y The height of the field to generate.
                /// @return Returns a container of generated white noise.
                NoiseField GenerateWhiteNoiseField(const Whole X, const Whole Y) const;
            public:
                /// @brief Class constructor.
                NoiseGenerator();
                /// @brief Class destructor.
                virtual ~NoiseGenerator();

                ///////////////////////////////////////////////////////////////////////////////
                // 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 background.
                /// @param Colour The colour to be applied to the noise to be generated.
                /// @return Returns a reference to this.
                NoiseGenerator& SetColour(const ColourValue& Colour);
                /// @brief Set the colour of the background.
                /// @param Red The Red component for the background colour.  Range: [0.0, 1.0].
                /// @param Green The Green component for the background colour.  Range: [0.0, 1.0].
                /// @param Blue The Blue component for the background colour.  Range: [0.0, 1.0].
                /// @param Alpha The Alpha component for the background colour.  Range: [0.0, 1.0].
                /// @return Returns a reference to this.
                NoiseGenerator& SetColour(const Real Red, const Real Green, const Real Blue, const Real Alpha = 1.0);
                /// @brief Sets the seed for the "random" number generator.
                /// @param Seed The seed value for the random number generator.  Initial Value: 5120.
                /// @return Returns a reference to this.
                NoiseGenerator& SetSeed(const Whole Seed);
                /// @brief Set the type of noise generation.
                /// @param Type Type of noise generator.  Initial Value: NT_White.
                /// @return Returns a reference to this.
                NoiseGenerator& SetType(const Procedural::NoiseType Type);
            };//NoiseGenerator
        }//Procedural
    }//Graphics
}//Mezzanine

#endif