[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 | #include "OgreColourInterpolatorAffector.h"
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| 26 | #include "OgreParticleSystem.h"
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| 27 | #include "OgreStringConverter.h"
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| 28 | #include "OgreParticle.h"
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| 29 |
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| 30 |
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| 31 | namespace Ogre {
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| 32 |
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| 33 | // init statics
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| 34 | ColourInterpolatorAffector::CmdColourAdjust ColourInterpolatorAffector::msColourCmd[MAX_STAGES];
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| 35 | ColourInterpolatorAffector::CmdTimeAdjust ColourInterpolatorAffector::msTimeCmd[MAX_STAGES];
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| 36 |
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| 37 | //-----------------------------------------------------------------------
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| 38 | ColourInterpolatorAffector::ColourInterpolatorAffector(ParticleSystem* psys)
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| 39 | : ParticleAffector(psys)
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| 40 | {
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| 41 | for (int i=0;i<MAX_STAGES;i++)
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| 42 | {
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| 43 | // set default colour to transparent grey, transparent since we might not want to display the particle here
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| 44 | // grey because when a colour component is 0.5f the maximum difference to another colour component is 0.5f
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| 45 | mColourAdj[i] = ColourValue(0.5f, 0.5f, 0.5f, 0.0f);
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| 46 | mTimeAdj[i] = 1.0f;
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| 47 | }
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| 48 |
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| 49 | mType = "ColourInterpolator";
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| 50 |
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| 51 | // Init parameters
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| 52 | if (createParamDictionary("ColourInterpolatorAffector"))
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| 53 | {
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| 54 | ParamDictionary* dict = getParamDictionary();
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| 55 |
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| 56 | for (int i=0;i<MAX_STAGES;i++)
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| 57 | {
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| 58 | msColourCmd[i].mIndex = i;
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| 59 | msTimeCmd[i].mIndex = i;
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| 60 |
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| 61 | StringUtil::StrStreamType stage;
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| 62 | stage << i;
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| 63 | String colour_title = String("colour") + stage.str();
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| 64 | String time_title = String("time") + stage.str();
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| 65 | String colour_descr = String("Stage ") + stage.str() + String(" colour.");
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| 66 | String time_descr = String("Stage ") + stage.str() + String(" time.");
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| 67 |
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| 68 | dict->addParameter(ParameterDef(colour_title, colour_descr, PT_COLOURVALUE), &msColourCmd[i]);
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| 69 | dict->addParameter(ParameterDef(time_title, time_descr, PT_REAL), &msTimeCmd[i]);
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| 70 | }
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| 71 | }
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| 72 | }
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| 73 | //-----------------------------------------------------------------------
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| 74 | void ColourInterpolatorAffector::_affectParticles(ParticleSystem* pSystem, Real timeElapsed)
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| 75 | {
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| 76 | Particle* p;
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| 77 | ParticleIterator pi = pSystem->_getIterator();
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| 78 |
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| 79 |
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| 80 | while (!pi.end())
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| 81 | {
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| 82 | p = pi.getNext();
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| 83 | const Real life_time = p->totalTimeToLive;
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| 84 | Real particle_time = 1.0f - (p->timeToLive / life_time);
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| 85 |
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| 86 | if (particle_time <= mTimeAdj[0])
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| 87 | {
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| 88 | p->colour = mColourAdj[0];
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| 89 | } else
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| 90 | if (particle_time >= mTimeAdj[MAX_STAGES - 1])
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| 91 | {
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| 92 | p->colour = mColourAdj[MAX_STAGES-1];
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| 93 | } else
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| 94 | {
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| 95 | for (int i=0;i<MAX_STAGES-1;i++)
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| 96 | {
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| 97 | if (particle_time >= mTimeAdj[i] && particle_time < mTimeAdj[i + 1])
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| 98 | {
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| 99 | particle_time -= mTimeAdj[i];
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| 100 | particle_time /= (mTimeAdj[i+1]-mTimeAdj[i]);
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| 101 | p->colour.r = ((mColourAdj[i+1].r * particle_time) + (mColourAdj[i].r * (1.0f - particle_time)));
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| 102 | p->colour.g = ((mColourAdj[i+1].g * particle_time) + (mColourAdj[i].g * (1.0f - particle_time)));
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| 103 | p->colour.b = ((mColourAdj[i+1].b * particle_time) + (mColourAdj[i].b * (1.0f - particle_time)));
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| 104 | p->colour.a = ((mColourAdj[i+1].a * particle_time) + (mColourAdj[i].a * (1.0f - particle_time)));
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| 105 | break;
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| 106 | }
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| 107 | }
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| 108 | }
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | //-----------------------------------------------------------------------
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| 113 | void ColourInterpolatorAffector::setColourAdjust(size_t index, ColourValue colour)
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| 114 | {
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| 115 | mColourAdj[index] = colour;
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| 116 | }
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| 117 | //-----------------------------------------------------------------------
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| 118 | ColourValue ColourInterpolatorAffector::getColourAdjust(size_t index) const
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| 119 | {
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| 120 | return mColourAdj[index];
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| 121 | }
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| 122 |
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| 123 |
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| 124 | //-----------------------------------------------------------------------
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| 125 | void ColourInterpolatorAffector::setTimeAdjust(size_t index, Real time)
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| 126 | {
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| 127 | mTimeAdj[index] = time;
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| 128 | }
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| 129 | //-----------------------------------------------------------------------
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| 130 | Real ColourInterpolatorAffector::getTimeAdjust(size_t index) const
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| 131 | {
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| 132 | return mTimeAdj[index];
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| 133 | }
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| 134 |
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| 135 |
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| 136 | //-----------------------------------------------------------------------
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| 137 | //-----------------------------------------------------------------------
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| 138 | //-----------------------------------------------------------------------
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| 139 | // Command objects
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| 140 | //-----------------------------------------------------------------------
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| 141 | //-----------------------------------------------------------------------
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| 142 | String ColourInterpolatorAffector::CmdColourAdjust::doGet(const void* target) const
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| 143 | {
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| 144 | return StringConverter::toString(
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| 145 | static_cast<const ColourInterpolatorAffector*>(target)->getColourAdjust(mIndex) );
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| 146 | }
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| 147 | void ColourInterpolatorAffector::CmdColourAdjust::doSet(void* target, const String& val)
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| 148 | {
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| 149 | static_cast<ColourInterpolatorAffector*>(target)->setColourAdjust(mIndex,
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| 150 | StringConverter::parseColourValue(val));
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| 151 | }
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| 152 | //-----------------------------------------------------------------------
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| 153 | String ColourInterpolatorAffector::CmdTimeAdjust::doGet(const void* target) const
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| 154 | {
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| 155 | return StringConverter::toString(
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| 156 | static_cast<const ColourInterpolatorAffector*>(target)->getTimeAdjust(mIndex) );
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| 157 | }
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| 158 | void ColourInterpolatorAffector::CmdTimeAdjust::doSet(void* target, const String& val)
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| 159 | {
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| 160 | static_cast<ColourInterpolatorAffector*>(target)->setTimeAdjust(mIndex,
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| 161 | StringConverter::parseReal(val));
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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 |
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