[3] | 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) 2000-2006 Torus Knot Software Ltd |
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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 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | #ifndef __ColourFaderAffector_H__ |
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| 30 | #define __ColourFaderAffector_H__ |
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| 31 | |
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| 32 | #include "OgreParticleFXPrerequisites.h" |
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| 33 | #include "OgreParticleAffector.h" |
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| 34 | #include "OgreStringInterface.h" |
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| 35 | |
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| 36 | namespace Ogre { |
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| 37 | |
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| 38 | |
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| 39 | /** This plugin subclass of ParticleAffector allows you to alter the colour of particles. |
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| 40 | @remarks |
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| 41 | This class supplies the ParticleAffector implementation required to modify the colour of |
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| 42 | particle in mid-flight. |
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| 43 | */ |
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| 44 | class _OgreParticleFXExport ColourFaderAffector : public ParticleAffector |
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| 45 | { |
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| 46 | public: |
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| 47 | |
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| 48 | /** Command object for red adjust (see ParamCommand).*/ |
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| 49 | class CmdRedAdjust : public ParamCommand |
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| 50 | { |
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| 51 | public: |
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| 52 | String doGet(const void* target) const; |
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| 53 | void doSet(void* target, const String& val); |
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| 54 | }; |
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| 55 | |
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| 56 | /** Command object for green adjust (see ParamCommand).*/ |
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| 57 | class CmdGreenAdjust : public ParamCommand |
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| 58 | { |
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| 59 | public: |
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| 60 | String doGet(const void* target) const; |
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| 61 | void doSet(void* target, const String& val); |
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| 62 | }; |
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| 63 | |
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| 64 | /** Command object for blue adjust (see ParamCommand).*/ |
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| 65 | class CmdBlueAdjust : public ParamCommand |
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| 66 | { |
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| 67 | public: |
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| 68 | String doGet(const void* target) const; |
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| 69 | void doSet(void* target, const String& val); |
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| 70 | }; |
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| 71 | |
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| 72 | /** Command object for alpha adjust (see ParamCommand).*/ |
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| 73 | class CmdAlphaAdjust : public ParamCommand |
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| 74 | { |
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| 75 | public: |
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| 76 | String doGet(const void* target) const; |
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| 77 | void doSet(void* target, const String& val); |
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| 78 | }; |
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| 79 | |
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| 80 | |
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| 81 | /** Default constructor. */ |
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| 82 | ColourFaderAffector(ParticleSystem* psys); |
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| 83 | |
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| 84 | /** See ParticleAffector. */ |
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| 85 | void _affectParticles(ParticleSystem* pSystem, Real timeElapsed); |
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| 86 | |
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| 87 | /** Sets the colour adjustment to be made per second to particles. |
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| 88 | @param red, green, blue, alpha |
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| 89 | Sets the adjustment to be made to each of the colour components per second. These |
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| 90 | values will be added to the colour of all particles every second, scaled over each frame |
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| 91 | for a smooth adjustment. |
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| 92 | */ |
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| 93 | void setAdjust(float red, float green, float blue, float alpha = 0.0); |
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| 94 | /** Sets the red adjustment to be made per second to particles. |
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| 95 | @param red |
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| 96 | The adjustment to be made to the colour component per second. This |
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| 97 | value will be added to the colour of all particles every second, scaled over each frame |
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| 98 | for a smooth adjustment. |
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| 99 | */ |
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| 100 | void setRedAdjust(float red); |
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| 101 | |
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| 102 | /** Gets the red adjustment to be made per second to particles. */ |
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| 103 | float getRedAdjust(void) const; |
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| 104 | |
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| 105 | /** Sets the green adjustment to be made per second to particles. |
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| 106 | @param green |
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| 107 | The adjustment to be made to the colour component per second. This |
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| 108 | value will be added to the colour of all particles every second, scaled over each frame |
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| 109 | for a smooth adjustment. |
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| 110 | */ |
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| 111 | void setGreenAdjust(float green); |
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| 112 | /** Gets the green adjustment to be made per second to particles. */ |
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| 113 | float getGreenAdjust(void) const; |
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| 114 | /** Sets the blue adjustment to be made per second to particles. |
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| 115 | @param blue |
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| 116 | The adjustment to be made to the colour component per second. This |
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| 117 | value will be added to the colour of all particles every second, scaled over each frame |
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| 118 | for a smooth adjustment. |
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| 119 | */ |
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| 120 | void setBlueAdjust(float blue); |
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| 121 | /** Gets the blue adjustment to be made per second to particles. */ |
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| 122 | float getBlueAdjust(void) const; |
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| 123 | |
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| 124 | /** Sets the alpha adjustment to be made per second to particles. |
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| 125 | @param alpha |
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| 126 | The adjustment to be made to the colour component per second. This |
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| 127 | value will be added to the colour of all particles every second, scaled over each frame |
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| 128 | for a smooth adjustment. |
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| 129 | */ |
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| 130 | void setAlphaAdjust(float alpha); |
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| 131 | /** Gets the alpha adjustment to be made per second to particles. */ |
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| 132 | float getAlphaAdjust(void) const; |
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| 133 | |
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| 134 | static CmdRedAdjust msRedCmd; |
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| 135 | static CmdGreenAdjust msGreenCmd; |
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| 136 | static CmdBlueAdjust msBlueCmd; |
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| 137 | static CmdAlphaAdjust msAlphaCmd; |
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| 138 | |
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| 139 | protected: |
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| 140 | float mRedAdj; |
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| 141 | float mGreenAdj; |
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| 142 | float mBlueAdj; |
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| 143 | float mAlphaAdj; |
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| 144 | |
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| 145 | /** Internal method for adjusting while clamping to [0,1] */ |
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| 146 | inline void applyAdjustWithClamp(float* pComponent, float adjust) |
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| 147 | { |
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| 148 | *pComponent += adjust; |
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| 149 | // Limit to 0 |
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| 150 | if (*pComponent < 0.0) |
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| 151 | { |
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| 152 | *pComponent = 0.0f; |
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| 153 | } |
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| 154 | // Limit to 1 |
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| 155 | else if (*pComponent > 1.0) |
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| 156 | { |
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| 157 | *pComponent = 1.0f; |
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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 | |
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| 164 | } |
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| 165 | |
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| 166 | |
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| 167 | #endif |
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| 168 | |
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