92 lines
3.3 KiB
C++
92 lines
3.3 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 "particleRandomiserAffector.h"
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#include "particles/particlesystem.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::RandomiserAffector, CPFCC::AFFECTOR_RANDOMISER, Particles::ParticleAffector);
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const Math::float3 RandomiserAffector::DEFAULT_MAX_DEVIATION = ConstDefine::FLOAT3_ZERO;
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const Math::scalar RandomiserAffector::DEFAULT_TIME_STEP = 0.2f;
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const bool RandomiserAffector::DEFAULT_RANDOM_DIRECTION = true;
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//-----------------------------------------------------------------------
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RandomiserAffector::RandomiserAffector(void) :
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ParticleAffector(),
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mMaxDeviationX(DEFAULT_MAX_DEVIATION.x()),
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mMaxDeviationY(DEFAULT_MAX_DEVIATION.y()),
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mMaxDeviationZ(DEFAULT_MAX_DEVIATION.z()),
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mTimeSinceLastUpdate(DEFAULT_TIME_STEP),
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mTimeStep(DEFAULT_TIME_STEP),
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mUpdate(true),
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mRandomDirection(DEFAULT_RANDOM_DIRECTION)
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{
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mName = "RandomiserAffector";
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}
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//-----------------------------------------------------------------------
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void RandomiserAffector::_preProcessParticles()
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{
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if (mParentSystem->GetEmitter())
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{
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mTimeSinceLastUpdate += (Math::scalar)mParentSystem->GetCurrentFrameTime();
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if (mTimeSinceLastUpdate > mTimeStep)
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{
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mTimeSinceLastUpdate -= mTimeStep;
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mUpdate = true;
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}
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}
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}
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//-----------------------------------------------------------------------
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void RandomiserAffector::_affect(Particle* particle)
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{
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if(!GetEnable())
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return;
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if (mUpdate)
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{
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if (mRandomDirection)
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{
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particle->mDirection += Math::float3(Math::n_rand(-mMaxDeviationX, mMaxDeviationX),
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Math::n_rand(-mMaxDeviationY, mMaxDeviationY),
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Math::n_rand(-mMaxDeviationZ, mMaxDeviationZ));
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}
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else
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{
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particle->mPosition += particle->mSize * Math::float3(Math::n_rand(-mMaxDeviationX, mMaxDeviationX),
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Math::n_rand(-mMaxDeviationY, mMaxDeviationY),
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Math::n_rand(-mMaxDeviationZ, mMaxDeviationZ));
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}
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}
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}
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//-----------------------------------------------------------------------
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void RandomiserAffector::_postProcessParticles()
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{
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mUpdate = false;
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}
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} |