OgreColourFaderAffector2.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2011 Torus Knot Software Ltd

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 __ColourFaderAffector2_H__
#define __ColourFaderAffector2_H__

#include "OgreParticleFXPrerequisites.h"
#include "OgreParticleAffector.h"
#include "OgreStringInterface.h"

namespace Ogre {


    class _OgreParticleFXExport ColourFaderAffector2 : public ParticleAffector
    {
    public:

        class CmdRedAdjust1 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdGreenAdjust1 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdBlueAdjust1 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdAlphaAdjust1 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdRedAdjust2 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdGreenAdjust2 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdBlueAdjust2 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdAlphaAdjust2 : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };

        class CmdStateChange : public ParamCommand
        {
        public:
            String doGet(const void* target) const;
            void doSet(void* target, const String& val);
        };


        ColourFaderAffector2(ParticleSystem* psys);

        void _affectParticles(ParticleSystem* pSystem, Real timeElapsed);

        void setAdjust1(float red, float green, float blue, float alpha = 0.0);
        void setAdjust2(float red, float green, float blue, float alpha = 0.0);
        void setRedAdjust1(float red);
        void setRedAdjust2(float red);

        float getRedAdjust1(void) const;
        float getRedAdjust2(void) const;

        void setGreenAdjust1(float green);
        void setGreenAdjust2(float green);
        float getGreenAdjust1(void) const;
        float getGreenAdjust2(void) const;
        void setBlueAdjust1(float blue);
        void setBlueAdjust2(float blue);
        float getBlueAdjust1(void) const;
        float getBlueAdjust2(void) const;

        void setAlphaAdjust1(float alpha);
        void setAlphaAdjust2(float alpha);
        float getAlphaAdjust1(void) const;
        float getAlphaAdjust2(void) const;


        void setStateChange(Real NewValue );
        Real getStateChange(void) const;

        static CmdRedAdjust1 msRedCmd1;
        static CmdRedAdjust2 msRedCmd2;
        static CmdGreenAdjust1 msGreenCmd1;
        static CmdGreenAdjust2 msGreenCmd2;
        static CmdBlueAdjust1 msBlueCmd1;
        static CmdBlueAdjust2 msBlueCmd2;
        static CmdAlphaAdjust1 msAlphaCmd1;
        static CmdAlphaAdjust2 msAlphaCmd2;
        static CmdStateChange msStateCmd;

    protected:
        float mRedAdj1, mRedAdj2;
        float mGreenAdj1,  mGreenAdj2;
        float mBlueAdj1, mBlueAdj2;
        float mAlphaAdj1, mAlphaAdj2;
        Real StateChangeVal;

        inline void applyAdjustWithClamp(float* pComponent, float adjust)
        {
            *pComponent += adjust;
            // Limit to 0
            if (*pComponent < 0.0)
            {
                *pComponent = 0.0f;
            }
            // Limit to 1
            else if (*pComponent > 1.0)
            {
                *pComponent = 1.0f;
            }
        }

    };


}


#endif