RedCore/cocos2d/extensions/Particle3D/PU/CCPUAlignAffector.cpp

/****************************************************************************
 Copyright (C) 2013 Henry van Merode. All rights reserved.
 Copyright (c) 2015-2017 Chukong Technologies Inc.
 
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 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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#include "CCPUAlignAffector.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_CC_BEGIN

// Constants
const bool PUAlignAffector::DEFAULT_RESIZE = false;
    
//-----------------------------------------------------------------------
PUAlignAffector::PUAlignAffector() 
    : PUAffector()
    , _resize(DEFAULT_RESIZE)
{
}

PUAlignAffector::~PUAlignAffector()
{
}

bool PUAlignAffector::isResize() const
{
    return _resize;
}

void PUAlignAffector::setResize(bool resize)
{
    _resize = resize;
}

void PUAlignAffector::updatePUAffector( PUParticle3D *particle, float /*deltaTime*/ )
{
    //auto particles = _particleSystem->getParticles();
    //if (!particles.empty())
    {
        //PUParticle3D *preParticle = particles[0];
        //for (unsigned int i = 1; i < particles.size(); ++i)
        {
            //PUParticle3D *particle = particles[i];
            Vec3 diff = _previousParticle->position - particle->position;
            if (_resize)
            {
                particle->setOwnDimensions(particle->width, diff.length(), particle->depth);
            }
            diff.normalize();
            particle->orientation.x = diff.x;
            particle->orientation.y = diff.y;
            particle->orientation.z = diff.z;
            _previousParticle = particle;
        }
    }
}

void PUAlignAffector::firstParticleUpdate( PUParticle3D *particle, float /*deltaTime*/ )
{
    _previousParticle = particle;
}

PUAlignAffector* PUAlignAffector::create()
{
    auto paa = new (std::nothrow) PUAlignAffector();
    paa->autorelease();
    return paa;
}

void PUAlignAffector::copyAttributesTo( PUAffector* affector )
{
    PUAffector::copyAttributesTo(affector);

    PUAlignAffector* alignAffector = static_cast<PUAlignAffector*>(affector);
    alignAffector->_resize = _resize;
}

NS_CC_END