axmol/extensions/Particle3D/PU/CCPUVelocityMatchingAffector.cpp

/****************************************************************************
 Copyright (C) 2013 Henry van Merode. All rights reserved.
 Copyright (c) 2015-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

 https://axis-project.github.io/

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 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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 furnished to do so, subject to the following conditions:

 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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#include "CCPUVelocityMatchingAffector.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_AX_BEGIN
// Constants
const float PUVelocityMatchingAffector::DEFAULT_RADIUS = 100.0f;

//-----------------------------------------------------------------------
PUVelocityMatchingAffector::PUVelocityMatchingAffector() : PUAffector(), _radius(DEFAULT_RADIUS) {}

PUVelocityMatchingAffector::~PUVelocityMatchingAffector(void) {}

//-----------------------------------------------------------------------
float PUVelocityMatchingAffector::getRadius() const
{
    return _radius;
}
//-----------------------------------------------------------------------
void PUVelocityMatchingAffector::setRadius(float radius)
{
    _radius = radius;
}
////-----------------------------------------------------------------------
// void Particle3DVelocityMatchingAffector::_prepare(ParticleTechnique* particleTechnique)
//{
//	// Activate spatial hashing
//	particleTechnique->setSpatialHashingUsed(true);
// }
////-----------------------------------------------------------------------
// void Particle3DVelocityMatchingAffector::_unprepare(ParticleTechnique* particleTechnique)
//{
//	// Activate spatial hashing
//	particleTechnique->setSpatialHashingUsed(false);
// }
//-----------------------------------------------------------------------

void PUVelocityMatchingAffector::updatePUAffector(PUParticle3D* /*particle*/, float /*deltaTime*/)
{
    // for (auto&& iter : _particleSystem->getParticles())
    //{
    //     PUParticle3D *particle = iter;
    //	// Determine neighbouring particles.
    //	SpatialHashTable<Particle*>* hashtable = particleTechnique->getSpatialHashTable();
    //	if (hashtable)
    //	{
    //		SpatialHashTable<Particle*>::HashTableCell cell = hashtable->getCell(particle->position);
    //		if (cell.empty())
    //			return;

    //		unsigned int size = static_cast<unsigned int>(cell.size());
    //		Vec3 sumDirection;
    //		Vec3 diff;
    //		unsigned int count = 0;
    //		for (unsigned int i = 0; i < size; ++i)
    //		{
    //			Particle* p = cell[i];

    //			// Don't check if it is the same particle
    //			if (particle != p)
    //			{
    //				// Validate whether the neighbouring particle is within range
    //				diff = p->position - particle->position;
    //				if (diff.length() < _radius)
    //				{
    //					sumDirection += p->direction;
    //					count++;
    //				}
    //			}
    //		}

    //		// Adjust direction
    //		if (count > 0)
    //		{
    //			sumDirection = sumDirection / (float)count;
    //			particle->direction += (sumDirection - particle->direction) * deltaTime;
    //		}
    //	}
    //}
}

PUVelocityMatchingAffector* PUVelocityMatchingAffector::create()
{
    auto pvma = new PUVelocityMatchingAffector();
    pvma->autorelease();
    return pvma;
}

void PUVelocityMatchingAffector::copyAttributesTo(PUAffector* affector)
{
    PUAffector::copyAttributesTo(affector);
    PUVelocityMatchingAffector* velocityMatchingAffector = static_cast<PUVelocityMatchingAffector*>(affector);
    velocityMatchingAffector->_radius                    = _radius;
}

NS_AX_END