126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
/****************************************************************************
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "stdneb.h"
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#include "particleLimitAffector.h"
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#include "particles/particleaffector.h"
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#include "particles/particle.h"
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namespace Particles
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{
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using namespace Math;
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__ImplementClass(Particles::LimitAffector, CPFCC::AFFECTOR_LIMIT, Particles::ParticleAffector);
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//-----------------------------------------------------------------------
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LimitAffector::LimitAffector(void) : ParticleAffector()
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, mSeparateAxis(false)
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{
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mName = "LimitAffector";
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mLimitX.SetScalar(0.0f);
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mLimitY.SetScalar(0.0f);
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mLimitZ.SetScalar(0.0f);
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mLimitValue.SetScalar(0.1f);
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//mColorMap
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}
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//-----------------------------------------------------------------------
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void LimitAffector::_affect(Particle* particle)
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{
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if(!GetEnable())
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return;
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if (particle)
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{
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float curTime = (particle->mTotalTimeToLive - particle->mTimeToLive)/particle->mTotalTimeToLive;
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//mAxisX
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float limitX = mLimitX.Calculate(curTime,particle->mRandom0);
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//mAxisY
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float limitY = mLimitY.Calculate(curTime,particle->mRandom1);
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//mAxisZ
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float limitZ = mLimitZ.Calculate(curTime,particle->mRandom2);
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//mDampen
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float _value = mLimitValue.Calculate(curTime,particle->mRandom3);
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Math::float3 velocity = particle->mDirection;
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if (mSeparateAxis)
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{
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Math::scalar length = velocity.length();
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length = LimitVelocity(length, limitX, _value);
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velocity.normalise();
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velocity = velocity * length;
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}
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else
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{
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velocity.x() = LimitVelocity(velocity.x(), limitX, _value);
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velocity.y() = LimitVelocity(velocity.y(), limitY, _value);
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velocity.z() = LimitVelocity(velocity.z(), limitZ, _value);
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}
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particle->mDirection = velocity;
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}
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}
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//------------------------------------------------------------------------
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float LimitAffector::LimitVelocity(float velocity, float _limit, float _value)
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{
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if(velocity > _limit)
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return _limit + (velocity - _limit)*(1.0f - _value);
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if(velocity < -_limit)
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return -_limit - (-_limit - velocity)*(1.0f - _value);
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return velocity;
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}
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//------------------------------------------------------------------------
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void LimitAffector::_preProcessParticles(void)
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{
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}
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//--------------------------------------------------------------------------------
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Math::MinMaxCurve* LimitAffector::getMinMaxCurve(ParticleCurveType axis)
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{
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switch(axis)
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{
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case Affector_LimitX:
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return &mLimitX;
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case Affector_LimitY:
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return &mLimitY;
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case Affector_LimitZ:
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return &mLimitZ;
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case Affector_LimitValue:
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return &mLimitValue;
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default:
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return Super::getMinMaxCurve(axis);
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}
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}
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}
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