CFluid::CFluid(unsigned int maxParticles, float restitution, float viscosity,
float stiffness, float dynamicFriction, float particleDistance) : _runOnGPU(false) {
// Obtenemos la sdk de physics y comprobamos que ha sido inicializada
_physxSDK = Physics::CServer::getSingletonPtr()->getPhysxSDK();
assert(_physxSDK && "No se ha inicializado physX");
// Obtenemos la escena de physx y comprobamos que ha sido inicializada
_scene = Physics::CServer::getSingletonPtr()->getActiveScene();
assert(_scene && "No existe una escena fisica");
// Creamos el fluido con los parametros pasados
createFluid(maxParticles, restitution, viscosity, stiffness, dynamicFriction, particleDistance);
createParticleBufferInfo(maxParticles);
// declare particle descriptor for creating new particles
PxParticleCreationData particleCreationData;
// Numero de particulas
particleCreationData.numParticles = maxParticles;
// La informacion sobre el array de particulas de momento lo hacemos temporal, ya que no lo vamos
// a necesitar en nigun otro sitio
particleCreationData.indexBuffer = PxStrideIterator<const PxU32>(_indexBuffer);
particleCreationData.positionBuffer = PxStrideIterator<const PxVec3>(_positionBuffer);
particleCreationData.velocityBuffer = PxStrideIterator<const PxVec3>(_velocityBuffer);
particleCreationData.restOffsetBuffer = PxStrideIterator<const PxF32>(_restOffsetBuffer);
particleCreationData.flagBuffer = PxStrideIterator<const PxU32>(_flagBuffer);
// create particles in *PxParticleSystem* ps
bool success = _fluid->createParticles(particleCreationData);
_fluid->releaseParticles();
} // CFluid
//Startup for the vortex sample, loads the backyard scene and creates a vortex
void SampleVortex::setup(NxScene *scene)
{
assert(scene);
m_scene = scene;
createFluid();
//Create a kinematic
NxActorDesc actorDesc;
NxBodyDesc bodyDesc;
bodyDesc.flags |= NX_BF_KINEMATIC;
bodyDesc.massSpaceInertia = NxVec3(1, 1, 1);
bodyDesc.mass = 1.0f;
actorDesc.body = &bodyDesc;
m_kinematicActor = scene->createActor(actorDesc);
m_forceFieldActor = m_kinematicActor;
//Create the force field for this sample, see code above
createVortexForceField(NxVec3(0, 3, 0), m_kinematicActor, scene);
}
