axmol/extensions/Particle3D/PU/CCPUVortexAffector.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/

 Permission is hereby granted, free of charge, to any person obtaining a copy
 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,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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#include "CCPUVortexAffector.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_AX_BEGIN

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

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

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

void PUVortexAffector::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 PUVortexAffector::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();
}

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

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

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

NS_AX_END