[692] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://www.ogre3d.org/
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| 6 |
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| 7 | Copyright (c) 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 | #ifndef __ColourFaderAffector_H__
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| 26 | #define __ColourFaderAffector_H__
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| 27 |
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| 28 | #include "OgreParticleFXPrerequisites.h"
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| 29 | #include "OgreParticleAffector.h"
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| 30 | #include "OgreStringInterface.h"
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| 31 |
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| 32 | namespace Ogre {
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| 33 |
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| 34 |
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| 35 | /** This plugin subclass of ParticleAffector allows you to alter the colour of particles.
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| 36 | @remarks
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| 37 | This class supplies the ParticleAffector implementation required to modify the colour of
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| 38 | particle in mid-flight.
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| 39 | */
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| 40 | class _OgreParticleFXExport ColourFaderAffector : public ParticleAffector
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| 41 | {
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| 42 | public:
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| 43 |
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| 44 | /** Command object for red adjust (see ParamCommand).*/
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| 45 | class CmdRedAdjust : public ParamCommand
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| 46 | {
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| 47 | public:
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| 48 | String doGet(const void* target) const;
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| 49 | void doSet(void* target, const String& val);
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| 50 | };
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| 51 |
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| 52 | /** Command object for green adjust (see ParamCommand).*/
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| 53 | class CmdGreenAdjust : public ParamCommand
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| 54 | {
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| 55 | public:
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| 56 | String doGet(const void* target) const;
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| 57 | void doSet(void* target, const String& val);
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| 58 | };
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| 59 |
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| 60 | /** Command object for blue adjust (see ParamCommand).*/
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| 61 | class CmdBlueAdjust : public ParamCommand
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| 62 | {
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| 63 | public:
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| 64 | String doGet(const void* target) const;
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| 65 | void doSet(void* target, const String& val);
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| 66 | };
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| 67 |
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| 68 | /** Command object for alpha adjust (see ParamCommand).*/
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| 69 | class CmdAlphaAdjust : public ParamCommand
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| 70 | {
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| 71 | public:
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| 72 | String doGet(const void* target) const;
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| 73 | void doSet(void* target, const String& val);
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| 74 | };
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| 75 |
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| 76 |
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| 77 | /** Default constructor. */
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| 78 | ColourFaderAffector(ParticleSystem* psys);
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| 79 |
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| 80 | /** See ParticleAffector. */
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| 81 | void _affectParticles(ParticleSystem* pSystem, Real timeElapsed);
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| 82 |
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| 83 | /** Sets the colour adjustment to be made per second to particles.
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| 84 | @param red, green, blue, alpha
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| 85 | Sets the adjustment to be made to each of the colour components per second. These
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| 86 | values will be added to the colour of all particles every second, scaled over each frame
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| 87 | for a smooth adjustment.
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| 88 | */
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| 89 | void setAdjust(float red, float green, float blue, float alpha = 0.0);
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| 90 | /** Sets the red adjustment to be made per second to particles.
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| 91 | @param red
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| 92 | The adjustment to be made to the colour component per second. This
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| 93 | value will be added to the colour of all particles every second, scaled over each frame
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| 94 | for a smooth adjustment.
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| 95 | */
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| 96 | void setRedAdjust(float red);
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| 97 |
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| 98 | /** Gets the red adjustment to be made per second to particles. */
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| 99 | float getRedAdjust(void) const;
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| 100 |
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| 101 | /** Sets the green adjustment to be made per second to particles.
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| 102 | @param green
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| 103 | The adjustment to be made to the colour component per second. This
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| 104 | value will be added to the colour of all particles every second, scaled over each frame
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| 105 | for a smooth adjustment.
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| 106 | */
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| 107 | void setGreenAdjust(float green);
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| 108 | /** Gets the green adjustment to be made per second to particles. */
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| 109 | float getGreenAdjust(void) const;
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| 110 | /** Sets the blue adjustment to be made per second to particles.
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| 111 | @param blue
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| 112 | The adjustment to be made to the colour component per second. This
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| 113 | value will be added to the colour of all particles every second, scaled over each frame
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| 114 | for a smooth adjustment.
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| 115 | */
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| 116 | void setBlueAdjust(float blue);
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| 117 | /** Gets the blue adjustment to be made per second to particles. */
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| 118 | float getBlueAdjust(void) const;
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| 119 |
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| 120 | /** Sets the alpha adjustment to be made per second to particles.
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| 121 | @param alpha
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| 122 | The adjustment to be made to the colour component per second. This
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| 123 | value will be added to the colour of all particles every second, scaled over each frame
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| 124 | for a smooth adjustment.
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| 125 | */
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| 126 | void setAlphaAdjust(float alpha);
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| 127 | /** Gets the alpha adjustment to be made per second to particles. */
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| 128 | float getAlphaAdjust(void) const;
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| 129 |
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| 130 | static CmdRedAdjust msRedCmd;
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| 131 | static CmdGreenAdjust msGreenCmd;
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| 132 | static CmdBlueAdjust msBlueCmd;
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| 133 | static CmdAlphaAdjust msAlphaCmd;
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| 134 |
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| 135 | protected:
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| 136 | float mRedAdj;
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| 137 | float mGreenAdj;
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| 138 | float mBlueAdj;
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| 139 | float mAlphaAdj;
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| 140 |
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| 141 | /** Internal method for adjusting while clamping to [0,1] */
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| 142 | inline void applyAdjustWithClamp(float* pComponent, float adjust)
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| 143 | {
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| 144 | *pComponent += adjust;
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| 145 | // Limit to 0
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| 146 | if (*pComponent < 0.0)
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| 147 | {
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| 148 | *pComponent = 0.0f;
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| 149 | }
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| 150 | // Limit to 1
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| 151 | else if (*pComponent > 1.0)
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| 152 | {
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| 153 | *pComponent = 1.0f;
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| 154 | }
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| 155 | }
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| 156 |
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| 157 | };
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| 158 |
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| 159 |
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| 160 | }
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| 161 |
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| 162 |
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| 163 | #endif
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| 164 |
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