axmol/extensions/Particle3D/ParticleUniverse/ParticleAffectors/CCPUParticle3DVortexAffector.cpp

/****************************************************************************
 Copyright (c) 2014 Chukong Technologies Inc.
 
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#include "CCPUParticle3DVortexAffector.h"
#include "Particle3D/ParticleUniverse/CCPUParticleSystem3D.h"

NS_CC_BEGIN

// Constants
const Vec3 PUParticle3DVortexAffector::DEFAULT_ROTATION_VECTOR(0, 0, 0);
const float PUParticle3DVortexAffector::DEFAULT_ROTATION_SPEED = 1.0f;

//-----------------------------------------------------------------------
PUParticle3DVortexAffector::PUParticle3DVortexAffector(void) : 
    PUParticle3DAffector(),
    _rotationVector(DEFAULT_ROTATION_VECTOR)
{
    _dynRotationSpeed = new PUDynamicAttributeFixed();
    (static_cast<PUDynamicAttributeFixed*>(_dynRotationSpeed))->setValue(DEFAULT_ROTATION_SPEED);
}
//-----------------------------------------------------------------------
PUParticle3DVortexAffector::~PUParticle3DVortexAffector(void)
{
    if (_dynRotationSpeed)
    {
        CC_SAFE_DELETE(_dynRotationSpeed);
    }
}
//-----------------------------------------------------------------------
const Vec3& PUParticle3DVortexAffector::getRotationVector(void) const
{
    return _rotationVector;
}
//-----------------------------------------------------------------------
void PUParticle3DVortexAffector::setRotationVector(const Vec3& rotationVector)
{
    _rotationVector = rotationVector;
}
//-----------------------------------------------------------------------
PUDynamicAttribute* PUParticle3DVortexAffector::getRotationSpeed(void) const
{
    return _dynRotationSpeed;
}
//-----------------------------------------------------------------------
void PUParticle3DVortexAffector::setRotationSpeed(PUDynamicAttribute* dynRotationSpeed)
{
    if (_dynRotationSpeed)
        CC_SAFE_DELETE(_dynRotationSpeed);

    _dynRotationSpeed = dynRotationSpeed;
}
//-----------------------------------------------------------------------
float PUParticle3DVortexAffector::calculateRotationSpeed(void)
{
    return float(_dynamicAttributeHelper.calculate(_dynRotationSpeed, (static_cast<PUParticleSystem3D *>(_particleSystem))->getTimeElapsedSinceStart()));
}
//-----------------------------------------------------------------------

void PUParticle3DVortexAffector::updatePUAffector( PUParticle3D *particle, float deltaTime )
{
    //for (auto iter : _particleSystem->getParticles())
    {
        //PUParticle3D *particle = iter;
        // Explicitly check on 'freezed', because it passes the techniques' validation.
        if (particle->isFreezed())
            return;

        // Rotate position, direction and orientation (visible particle only) and compensate for the affector position
        // Also take the affect specialisation into account
        Mat4 rotMat;
        Mat4::createRotation(_rotation, &rotMat);
        Vec3 local = particle->position - _derivedPosition;
        particle->position = _derivedPosition + rotMat * local;
        particle->direction = rotMat * particle->direction;
        particle->orientation = _rotation * particle->orientation;
    }
}

void PUParticle3DVortexAffector::preUpdateAffector( float deltaTime )
{
    PUParticleSystem3D* sys = static_cast<PUParticleSystem3D *>(_particleSystem);

    if (sys)
    {
        Mat4 rotMat;
        Mat4::createRotation(sys->getDerivedOrientation(), &rotMat);
        _rotation.set(rotMat * _rotationVector, float(calculateRotationSpeed() * deltaTime));
    }
    else
    {
        _rotation.set(_rotationVector, float(calculateRotationSpeed() * deltaTime));
    }

    getDerivedPosition();
}

PUParticle3DVortexAffector* PUParticle3DVortexAffector::create()
{
    auto pvf = new PUParticle3DVortexAffector();
    pvf->autorelease();
    return pvf;
}

void PUParticle3DVortexAffector::copyAttributesTo( PUParticle3DAffector* affector )
{
    PUParticle3DAffector::copyAttributesTo(affector);

    PUParticle3DVortexAffector* vortexAffector = static_cast<PUParticle3DVortexAffector*>(affector);
    vortexAffector->_rotation = _rotation;
    vortexAffector->_rotationVector = _rotationVector;
    vortexAffector->setRotationSpeed(getRotationSpeed()->clone());
}

NS_CC_END