NxFluidEmitter* CreateFluidEmitter(const NxReal dimX, const NxReal dimY)
{
fluid = CreateFluid();
assert(fluid);
NxQuat q;
q.fromAngleAxis(90,NxVec3(1,0,0));
NxMat34 mat;
mat.M.fromQuat(q);
mat.t = NxVec3(0,4.5,0);
// Create emitter
NxFluidEmitterDesc emitterDesc;
emitterDesc.setToDefault();
emitterDesc.frameShape = NULL;
emitterDesc.dimensionX = dimX;
emitterDesc.dimensionY = dimY;
emitterDesc.relPose = mat;
emitterDesc.rate = 100;
emitterDesc.randomAngle = 0.0f;
emitterDesc.randomPos = NxVec3(0.0f,0.0f,0.0f);
emitterDesc.fluidVelocityMagnitude = 2.5f;
emitterDesc.repulsionCoefficient = 0.02f;
emitterDesc.maxParticles = 0;
emitterDesc.particleLifetime = 0.0f;
emitterDesc.type = NX_FE_CONSTANT_PRESSURE;
emitterDesc.shape = NX_FE_ELLIPSE;
return fluid->createEmitter(emitterDesc);
}
pFluidEmitter*pFluid::createEmitter(const pFluidEmitterDesc& desc)
{
NxFluidEmitterDesc eDesc ;
eDesc.setToDefault();
pFactory::Instance()->copyToEmitterDesc(eDesc,desc);
int valid = eDesc.isValid();
if (!valid)
{
xLogger::xLog(XL_START,ELOGERROR,E_LI_MANAGER,"Emitter Description not Valid !");
return NULL;
}
CK3dEntity*entityReference = (CK3dEntity*)ctx()->GetObject(desc.entityReference);
if (!entityReference)
{
xLogger::xLog(XL_START,ELOGERROR,E_LI_MANAGER,"You must set a reference object ID in .referenceEntity");
return NULL;
}
eDesc.relPose.M.id();
eDesc.relPose.M.rotX(-NxHalfPiF32);
eDesc.relPose.t = NxVec3(0,1.1f,0);
////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////
NxFluidEmitter *emitter = getFluid()->createEmitter(eDesc);
if (!emitter)
return NULL;
pFluidEmitter * result = new pFluidEmitter();
result->setEmitter(emitter);
result->setFluid(this);
result->setEntityReference(entityReference->GetID());
VxVector pos;
if (desc.frameShape)
{
desc.frameShape->GetPosition(&pos);
}
emitter->setGlobalPosition(getFrom(pos));
emitter->userData = result;
//////////////////////////////////////////////////////////////////////////
//
// Render Settings :
//
pFluidRenderSettings *rSettings = new pFluidRenderSettings(ctx(),desc.entityReference,"pFluidEmitter");
rSettings->setToDefault();
rSettings->setEmitter(result);
return result;
}
void SampleVortex::createFluid()
{
static NxVec3 ParticleBuffer[10000];
// Set structure to pass particles, and receive them after every simulation step
NxParticleData particles;
//particles.maxParticles = gParticleBufferCap;
particles.numParticlesPtr = &m_ParticleBufferSize;
particles.bufferPos = &ParticleBuffer[0].x;
particles.bufferPosByteStride = sizeof(NxVec3);
// Create a fluid descriptor
NxFluidDesc fluidDesc;
fluidDesc.maxParticles = 5000;
fluidDesc.kernelRadiusMultiplier = 1.2;
fluidDesc.restParticlesPerMeter = 10;
fluidDesc.motionLimitMultiplier = 3.6;
fluidDesc.packetSizeMultiplier = 16;
fluidDesc.collisionDistanceMultiplier = 0.12;
fluidDesc.stiffness = 20;
fluidDesc.viscosity = 6;
fluidDesc.restDensity = 50;
fluidDesc.damping = 0;
fluidDesc.restitutionForStaticShapes = 0.4;
fluidDesc.dynamicFrictionForStaticShapes= 0.03;
fluidDesc.simulationMethod = NX_F_SPH; //NX_F_NO_PARTICLE_INTERACTION;
fluidDesc.flags &= ~NX_FF_HARDWARE;
fluidDesc.initialParticleData = particles;
fluidDesc.particlesWriteData = particles;
NxFluid* fluid = m_scene->createFluid(fluidDesc);
assert(fluid != NULL);
//Setup structure which wraps the buffers for particle creation.
ParticleSDK* newParticles = new ParticleSDK[5000];
NxParticleData newParticleData;
newParticleData.numParticlesPtr = new NxU32;
newParticleData.bufferPos = &newParticles[0].position.x;
newParticleData.bufferPosByteStride = sizeof(ParticleSDK);
newParticleData.bufferVel = &newParticles[0].velocity.x;
newParticleData.bufferVelByteStride = sizeof(ParticleSDK);
newParticleData.bufferLife = &newParticles[0].lifetime;
newParticleData.bufferLifeByteStride = sizeof(ParticleSDK);
fluid->setParticlesWriteData(newParticleData);
// create Emitter
NxFluidEmitterDesc emitterDesc;
emitterDesc.dimensionX = 0.05;
emitterDesc.dimensionY = 0.05;
emitterDesc.shape = NX_FE_ELLIPSE;
emitterDesc.maxParticles = 5000;
emitterDesc.type = NX_FE_CONSTANT_FLOW_RATE;
emitterDesc.randomPos = NxVec3(0.05f, 0.05f, 0.05f);
emitterDesc.randomAngle = 0.481710941f;
emitterDesc.fluidVelocityMagnitude = 5;
emitterDesc.rate = 50;
emitterDesc.particleLifetime = 7;
emitterDesc.repulsionCoefficient = 1;
emitterDesc.flags = NX_FEF_VISUALIZATION | NX_FEF_ADD_BODY_VELOCITY | NX_FEF_ENABLED;
assert(emitterDesc.isValid());
NxFluidEmitter* emitter = fluid->createEmitter(emitterDesc);
assert(emitter);
}
