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vtkLagrangianBasicIntegrationModel.cxx
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vtkLagrangianBasicIntegrationModel.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkLagrangianBasicIntegrationModel.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkLagrangianBasicIntegrationModel.h"
#include "vtkBilinearQuadIntersection.h"
#include "vtkCellData.h"
#include "vtkDataArray.h"
#include "vtkDataObjectTypes.h"
#include "vtkDataSet.h"
#include "vtkDoubleArray.h"
#include "vtkFieldData.h"
#include "vtkGenericCell.h"
#include "vtkIntArray.h"
#include "vtkLagrangianParticle.h"
#include "vtkLagrangianParticleTracker.h"
#include "vtkLagrangianThreadedData.h"
#include "vtkLongLongArray.h"
#include "vtkMath.h"
#include "vtkNew.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkQuad.h"
#include "vtkSetGet.h"
#include "vtkSmartPointer.h"
#include "vtkStaticCellLocator.h"
#include "vtkStringArray.h"
#include "vtkUnsignedCharArray.h"
#include "vtkVector.h"
#include <cassert>
#include <mutex>
#include <set>
#include <sstream>
#include <vector>
#define USER_SURFACE_TYPE 100 // Minimal value for user defined surface type
//------------------------------------------------------------------------------
typedef std::vector<vtkSmartPointer<vtkAbstractCellLocator>> LocatorsTypeBase;
class vtkLocatorsType : public LocatorsTypeBase
{
};
typedef std::vector<vtkSmartPointer<vtkDataSet>> DataSetsTypeBase;
class vtkDataSetsType : public DataSetsTypeBase
{
};
typedef std::pair<unsigned int, vtkSmartPointer<vtkDataSet>> SurfaceItem;
typedef std::vector<SurfaceItem> SurfaceTypeBase;
class vtkSurfaceType : public SurfaceTypeBase
{
};
typedef std::pair<unsigned int, double> PassThroughItem;
typedef std::set<PassThroughItem> PassThroughSetType;
//------------------------------------------------------------------------------
vtkLagrangianBasicIntegrationModel::vtkLagrangianBasicIntegrationModel()
: Locator(nullptr)
, Tolerance(1.0e-8)
, NonPlanarQuadSupport(false)
, UseInitialIntegrationTime(false)
, Tracker(nullptr)
{
SurfaceArrayDescription surfaceTypeDescription;
surfaceTypeDescription.nComp = 1;
surfaceTypeDescription.type = VTK_INT;
surfaceTypeDescription.enumValues.emplace_back(SURFACE_TYPE_MODEL, "ModelDefined");
surfaceTypeDescription.enumValues.emplace_back(SURFACE_TYPE_TERM, "Terminate");
surfaceTypeDescription.enumValues.emplace_back(SURFACE_TYPE_BOUNCE, "Bounce");
surfaceTypeDescription.enumValues.emplace_back(SURFACE_TYPE_BREAK, "BreakUp");
surfaceTypeDescription.enumValues.emplace_back(SURFACE_TYPE_PASS, "PassThrough");
this->SurfaceArrayDescriptions["SurfaceType"] = surfaceTypeDescription;
this->SeedArrayNames->InsertNextValue("ParticleInitialVelocity");
this->SeedArrayComps->InsertNextValue(3);
this->SeedArrayTypes->InsertNextValue(VTK_DOUBLE);
this->SeedArrayNames->InsertNextValue("ParticleInitialIntegrationTime");
this->SeedArrayComps->InsertNextValue(1);
this->SeedArrayTypes->InsertNextValue(VTK_DOUBLE);
this->Locators = new vtkLocatorsType;
this->DataSets = new vtkDataSetsType;
this->Surfaces = new vtkSurfaceType;
this->SurfaceLocators = new vtkLocatorsType;
// Using a vtkStaticCellLocator by default
vtkNew<vtkStaticCellLocator> locator;
this->SetLocator(locator);
this->LocatorsBuilt = false;
}
//------------------------------------------------------------------------------
vtkLagrangianBasicIntegrationModel::~vtkLagrangianBasicIntegrationModel()
{
this->ClearDataSets();
this->ClearDataSets(true);
this->SetLocator(nullptr);
delete this->Locators;
delete this->DataSets;
delete this->Surfaces;
delete this->SurfaceLocators;
}
//------------------------------------------------------------------------------
void vtkLagrangianBasicIntegrationModel::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
if (this->Locator)
{
os << indent << "Locator: " << endl;
this->Locator->PrintSelf(os, indent.GetNextIndent());
}
else
{
os << indent << "Locator: " << this->Locator << endl;
}
os << indent << "WeightsSize: " << this->WeightsSize << endl;
os << indent << "Tolerance: " << this->Tolerance << endl;
}
//------------------------------------------------------------------------------
void vtkLagrangianBasicIntegrationModel::SetTracker(vtkLagrangianParticleTracker* tracker)
{
this->Tracker = tracker;
}
//------------------------------------------------------------------------------
void vtkLagrangianBasicIntegrationModel::AddDataSet(
vtkDataSet* dataset, bool surface, unsigned int surfaceFlatIndex)
{
// Sanity check
if (!dataset || dataset->GetNumberOfPoints() == 0 || dataset->GetNumberOfCells() == 0)
{
vtkErrorMacro(<< "Dataset is null or empty");
return;
}
if (!this->Locator)
{
vtkErrorMacro(<< "Locator is null");
return;
}
// There seems to be some kind of problem with the garbage collector
// and the referencing of datasets and locators.
// In order to avoid leaks we shallow copy the dataset.
// This could be removed once this problem is fixed.
vtkSmartPointer<vtkDataObject> dob;
dob.TakeReference(vtkDataObjectTypes::NewDataObject(dataset->GetDataObjectType()));
vtkDataSet* datasetCpy = vtkDataSet::SafeDownCast(dob);
datasetCpy->ShallowCopy(dataset);
// insert the dataset into DataSet vector
if (surface)
{
this->Surfaces->push_back(std::make_pair(surfaceFlatIndex, datasetCpy));
}
else
{
this->DataSets->push_back(datasetCpy);
}
// insert a locator into Locators vector, non-null only for vtkPointSet
vtkSmartPointer<vtkAbstractCellLocator> locator = nullptr;
if (dataset->IsA("vtkPointSet"))
{
if (surface)
{
locator.TakeReference(vtkStaticCellLocator::New());
}
else
{
locator.TakeReference(this->Locator->NewInstance());
}
locator->SetTolerance(this->LocatorTolerance);
locator->SetDataSet(datasetCpy);
locator->CacheCellBoundsOn();
locator->AutomaticOn();
locator->BuildLocator();
}
else
{
// for non-vtkPointSet vtkDataSet, we are using their internal locator
// It is required to do a findCell call before the threaded code
// so the locator is built first.
double x[3];
dataset->GetPoint(0, x);
vtkNew<vtkGenericCell> cell;
dataset->GetCell(0, cell);
int subId;
double pcoords[3];
std::vector<double> weights(dataset->GetMaxCellSize());
dataset->FindCell(x, nullptr, cell, 0, 0, subId, pcoords, weights.data());
}
// Add locator
if (surface)
{
this->SurfaceLocators->push_back(locator);
}
else
{
this->Locators->push_back(locator);
this->WeightsSize = std::max(this->WeightsSize, dataset->GetMaxCellSize());
}
}
//------------------------------------------------------------------------------
void vtkLagrangianBasicIntegrationModel::ClearDataSets(bool surface)
{
if (surface)
{
this->Surfaces->clear();
this->SurfaceLocators->clear();
}
else
{
this->DataSets->clear();
this->Locators->clear();
this->WeightsSize = 0;
}
}
//------------------------------------------------------------------------------
int vtkLagrangianBasicIntegrationModel::FunctionValues(double* x, double* f, void* userData)
{
// Sanity check
if (this->DataSets->empty())
{
vtkErrorMacro(<< "Please add a dataset to the integration model before integrating.");
return 0;
}
vtkLagrangianParticle* particle = static_cast<vtkLagrangianParticle*>(userData);
if (!particle)
{
vtkErrorMacro(<< "Could not recover vtkLagrangianParticle");
return 0;
}
vtkAbstractCellLocator* loc;
vtkDataSet* ds;
vtkIdType cellId;
double* weights;
if (this->FindInLocators(x, particle, ds, cellId, loc, weights))
{
// Evaluate integration model velocity field with the found cell
return this->FunctionValues(particle, ds, cellId, weights, x, f);
}
// Can't evaluate
return 0;
}
//------------------------------------------------------------------------------
void vtkLagrangianBasicIntegrationModel::SetLocator(vtkAbstractCellLocator* locator)
{
if (this->Locator != locator)
{
vtkAbstractCellLocator* temp = this->Locator;
this->Locator = locator;
if (this->Locator)
{
this->Locator->Register(this);
}
if (temp)
{
temp->UnRegister(this);
}
this->Modified();
this->LocatorsBuilt = false;
}
}
//------------------------------------------------------------------------------
vtkLagrangianParticle* vtkLagrangianBasicIntegrationModel::ComputeSurfaceInteraction(
vtkLagrangianParticle* particle, std::queue<vtkLagrangianParticle*>& particles,
unsigned int& surfaceFlatIndex, PassThroughParticlesType& passThroughParticles)
{
vtkDataSet* surface = nullptr;
double interFactor = 1.0;
vtkIdType cellId = -1;
int surfaceType = -1;
PassThroughSetType passThroughInterSet;
bool perforation;
do
{
passThroughInterSet.clear();
perforation = false;
for (size_t iDs = 0; iDs < this->Surfaces->size(); iDs++)
{
vtkAbstractCellLocator* loc = (*this->SurfaceLocators)[iDs];
vtkDataSet* tmpSurface = (*this->Surfaces)[iDs].second;
vtkGenericCell* cell = particle->GetThreadedData()->GenericCell;
vtkIdList* cellList = particle->GetThreadedData()->IdList;
cellList->Reset();
loc->FindCellsAlongLine(
particle->GetPosition(), particle->GetNextPosition(), this->Tolerance, cellList);
for (vtkIdType i = 0; i < cellList->GetNumberOfIds(); i++)
{
double tmpFactor;
double tmpPoint[3];
vtkIdType tmpCellId = cellList->GetId(i);
tmpSurface->GetCell(tmpCellId, cell);
if (this->IntersectWithLine(particle, cell->GetRepresentativeCell(),
particle->GetPosition(), particle->GetNextPosition(), this->Tolerance, tmpFactor,
tmpPoint) == 0)
{
// FindCellAlongsLines sometimes get false positives
continue;
}
if (tmpFactor < interFactor)
{
// Recover surface type for this cell
double surfaceTypeDbl;
// "SurfaceType" is at index 2
int surfaceIndex = 2;
vtkIdType surfaceTupleId = tmpCellId;
// When using field data surface type, tuple index is 0
int ret = this->GetFlowOrSurfaceDataFieldAssociation(surfaceIndex);
if (ret == -1)
{
vtkErrorMacro(<< "Surface Type is not correctly set in surface dataset");
return nullptr;
}
if (ret == vtkDataObject::FIELD_ASSOCIATION_NONE)
{
surfaceTupleId = 0;
}
if (!this->GetFlowOrSurfaceData(
particle, surfaceIndex, tmpSurface, surfaceTupleId, nullptr, &surfaceTypeDbl))
{
vtkErrorMacro(
<< "Surface Type is not set in surface dataset or"
" have incorrect number of components, cannot use surface interaction");
return nullptr;
}
int tmpSurfaceType = static_cast<int>(surfaceTypeDbl);
if (tmpSurfaceType == vtkLagrangianBasicIntegrationModel::SURFACE_TYPE_PASS)
{
// Pass Through Surface, store for later
passThroughInterSet.insert(std::make_pair((*this->Surfaces)[iDs].first, tmpFactor));
}
else
{
if (tmpSurface == particle->GetLastSurfaceDataSet() &&
tmpCellId == particle->GetLastSurfaceCellId())
{
perforation = this->CheckSurfacePerforation(particle, tmpSurface, tmpCellId);
if (perforation)
{
break;
}
continue;
}
// Interacting surface
interFactor = tmpFactor;
surface = tmpSurface;
surfaceFlatIndex = (*this->Surfaces)[iDs].first;
surfaceType = tmpSurfaceType;
cellId = tmpCellId;
}
}
}
}
} while (perforation);
PassThroughSetType::iterator it;
for (it = passThroughInterSet.begin(); it != passThroughInterSet.end(); ++it)
{
PassThroughItem item = *it;
// As one cas see in the test above, if a pass through surface intersects at the exact
// same location than the point computed using the intersection factor,
// we do not store the intersection.
// pass through are considered non prioritary, and do not intersects
// when at the exact the same place as the main intersection
if (item.second < interFactor)
{
vtkLagrangianParticle* clone = particle->CloneParticle();
clone->SetInteraction(vtkLagrangianParticle::SURFACE_INTERACTION_PASS);
this->InterpolateNextParticleVariables(clone, item.second);
passThroughParticles.push(std::make_pair(item.first, clone));
}
}
// Store surface cache (even nullptr one)
particle->SetLastSurfaceCell(surface, cellId);
bool recordInteraction = false;
vtkLagrangianParticle* interactionParticle = nullptr;
if (cellId != -1)
{
// There is an actual interaction
// Position next point onto surface
this->InterpolateNextParticleVariables(particle, interFactor, true);
interactionParticle = particle->CloneParticle();
switch (surfaceType)
{
case vtkLagrangianBasicIntegrationModel::SURFACE_TYPE_TERM:
recordInteraction = this->TerminateParticle(particle);
break;
case vtkLagrangianBasicIntegrationModel::SURFACE_TYPE_BOUNCE:
recordInteraction = this->BounceParticle(particle, surface, cellId);
break;
case vtkLagrangianBasicIntegrationModel::SURFACE_TYPE_BREAK:
recordInteraction = this->BreakParticle(particle, surface, cellId, particles);
break;
case vtkLagrangianBasicIntegrationModel::SURFACE_TYPE_PASS:
vtkErrorMacro(<< "Something went wrong with pass-through surface, "
"next results will be invalid.");
return nullptr;
default:
if (surfaceType != SURFACE_TYPE_MODEL && surfaceType < USER_SURFACE_TYPE)
{
vtkWarningMacro("Please do not use user defined surface type under "
<< USER_SURFACE_TYPE
<< " as they may be used in the future by the Lagrangian Particle Tracker");
}
recordInteraction =
this->InteractWithSurface(surfaceType, particle, surface, cellId, particles);
break;
}
interactionParticle->SetInteraction(particle->GetInteraction());
}
if (!recordInteraction)
{
delete interactionParticle;
interactionParticle = nullptr;
}
return interactionParticle;
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::TerminateParticle(vtkLagrangianParticle* particle)
{
particle->SetTermination(vtkLagrangianParticle::PARTICLE_TERMINATION_SURF_TERMINATED);
particle->SetInteraction(vtkLagrangianParticle::SURFACE_INTERACTION_TERMINATED);
return true;
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::BounceParticle(
vtkLagrangianParticle* particle, vtkDataSet* surface, vtkIdType cellId)
{
particle->SetInteraction(vtkLagrangianParticle::SURFACE_INTERACTION_BOUNCE);
// Recover surface normal
// Surface should have been computed already
assert(surface->GetCellData()->GetNormals() != nullptr);
double normal[3];
surface->GetCellData()->GetNormals()->GetTuple(cellId, normal);
// Change velocity for bouncing and set interaction point
double* nextVel = particle->GetNextVelocity();
double dot = vtkMath::Dot(normal, nextVel);
for (int i = 0; i < 3; i++)
{
nextVel[i] = nextVel[i] - 2 * dot * normal[i];
}
return true;
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::BreakParticle(vtkLagrangianParticle* particle,
vtkDataSet* surface, vtkIdType cellId, std::queue<vtkLagrangianParticle*>& particles)
{
// Terminate particle
particle->SetTermination(vtkLagrangianParticle::PARTICLE_TERMINATION_SURF_BREAK);
particle->SetInteraction(vtkLagrangianParticle::SURFACE_INTERACTION_BREAK);
// Recover surface normal
// Surface should have been computed already
assert(surface->GetCellData()->GetNormals() != nullptr);
double normal[3];
surface->GetCellData()->GetNormals()->GetTuple(cellId, normal);
// Create new particles
vtkLagrangianParticle* particle1 = particle->NewParticle(this->Tracker->GetNewParticleId());
vtkLagrangianParticle* particle2 = particle->NewParticle(this->Tracker->GetNewParticleId());
// Compute bounce for each new particle
double* nextVel = particle->GetNextVelocity();
double* part1Vel = particle1->GetVelocity();
double* part2Vel = particle2->GetVelocity();
double dot = vtkMath::Dot(normal, nextVel);
double cross[3];
vtkMath::Cross(normal, nextVel, cross);
double bounceNorm = vtkMath::Norm(nextVel);
for (int i = 0; i < 3; i++)
{
part1Vel[i] = nextVel[i] - 2 * dot * normal[i] + cross[i];
part2Vel[i] = nextVel[i] - 2 * dot * normal[i] - cross[i];
}
double part1Norm = vtkMath::Norm(part1Vel);
double part2Norm = vtkMath::Norm(part2Vel);
for (int i = 0; i < 3; i++)
{
if (part1Norm != 0.0)
{
part1Vel[i] = part1Vel[i] / part1Norm * bounceNorm;
}
if (part2Norm != 0.0)
{
part2Vel[i] = part2Vel[i] / part2Norm * bounceNorm;
}
}
// push new particle in queue
// Mutex Locked Area
std::lock_guard<std::mutex> guard(this->ParticleQueueMutex);
particles.push(particle1);
particles.push(particle2);
return true;
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::InteractWithSurface(int vtkNotUsed(surfaceType),
vtkLagrangianParticle* particle, vtkDataSet* vtkNotUsed(surface), vtkIdType vtkNotUsed(cellId),
std::queue<vtkLagrangianParticle*>& vtkNotUsed(particles))
{
return this->TerminateParticle(particle);
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::IntersectWithLine(vtkLagrangianParticle* particle,
vtkCell* cell, double p1[3], double p2[3], double tol, double& t, double x[3])
{
// Non planar quad support
if (this->NonPlanarQuadSupport)
{
vtkQuad* quad = vtkQuad::SafeDownCast(cell);
if (quad)
{
if (p1[0] == p2[0] && p1[1] == p2[1] && p1[2] == p2[2])
{
// the 2 points are the same, no intersection
return false;
}
// create 4 points and fill the bqi
vtkPoints* points = quad->GetPoints();
vtkBilinearQuadIntersection* bqi = particle->GetThreadedData()->BilinearQuadIntersection;
points->GetPoint(0, bqi->GetP00Data());
points->GetPoint(3, bqi->GetP01Data());
points->GetPoint(1, bqi->GetP10Data());
points->GetPoint(2, bqi->GetP11Data());
// Create the ray
vtkVector3d r(p1[0], p1[1], p1[2]); // origin of the ray
vtkVector3d q(p2[0] - p1[0], p2[1] - p1[1], p2[2] - p1[2]); // a ray direction
// the original t before q is normalised
double tOrig = q.Norm();
q.Normalize();
vtkVector3d uv; // variables returned
if (bqi->RayIntersection(r, q, uv)) // run intersection test
{
// we have an intersection
t = uv.GetZ() / tOrig;
if (t >= 0.0 && t <= 1.0)
{
// Recover intersection between p1 and p2
vtkVector3d intersec = bqi->ComputeCartesianCoordinates(uv.GetX(), uv.GetY());
x[0] = intersec.GetX();
x[1] = intersec.GetY();
x[2] = intersec.GetZ();
return true;
}
else
{
// intersection outside of p1p2
return false;
}
}
else
{
// no intersection
return false;
}
}
}
// Standard cell intersection
double pcoords[3];
int subId;
int ret = cell->IntersectWithLine(p1, p2, tol, t, x, pcoords, subId);
if (ret != 0)
{
return true;
}
else
{
return false;
}
}
//------------------------------------------------------------------------------
void vtkLagrangianBasicIntegrationModel::InterpolateNextParticleVariables(
vtkLagrangianParticle* particle, double interpolationFactor, bool forceInside)
{
if (forceInside)
{
// Reducing interpolationFactor to ensure we stay in domain
double magnitude = particle->GetPositionVectorMagnitude();
interpolationFactor *= (magnitude - this->Tolerance / interpolationFactor) / magnitude;
}
double* current = particle->GetEquationVariables();
double* next = particle->GetNextEquationVariables();
for (int i = 0; i < particle->GetNumberOfVariables(); i++)
{
next[i] = current[i] + (next[i] - current[i]) * interpolationFactor;
}
double& stepTime = particle->GetStepTimeRef();
stepTime *= interpolationFactor;
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::CheckSurfacePerforation(
vtkLagrangianParticle* particle, vtkDataSet* surface, vtkIdType cellId)
{
// Recover surface normal
// Surface should have been computed already
assert(surface->GetCellData()->GetNormals() != nullptr);
double normal[3];
surface->GetCellData()->GetNormals()->GetTuple(cellId, normal);
// Recover particle vector
double prevToCurr[3];
double currToNext[3];
for (int i = 0; i < 3; i++)
{
prevToCurr[i] = particle->GetPosition()[i] - particle->GetPrevPosition()[i];
currToNext[i] = particle->GetNextPosition()[i] - particle->GetPosition()[i];
}
// Check directions
double dot = vtkMath::Dot(normal, currToNext);
double prevDot = vtkMath::Dot(normal, prevToCurr);
double* nextVel = particle->GetNextVelocity();
double velDot = vtkMath::Dot(normal, nextVel);
if (dot == 0 || prevDot == 0 || prevDot * dot > 0)
{
// vector does not project on the same directions, perforation !
for (int i = 0; i < 3; i++)
{
// Simple perforation management via symmetry
currToNext[i] = currToNext[i] - 2 * dot * normal[i];
particle->GetNextPosition()[i] = particle->GetPosition()[i] + currToNext[i];
nextVel[i] = nextVel[i] - 2 * velDot * normal[i];
}
return true;
}
return false;
}
//------------------------------------------------------------------------------
void vtkLagrangianBasicIntegrationModel::SetInputArrayToProcess(
int idx, int port, int connection, int fieldAssociation, const char* name)
{
// Store the array metadata
vtkLagrangianBasicIntegrationModel::ArrayVal vals;
vals.val[0] = port;
vals.val[1] = connection;
vals.val[2] = fieldAssociation;
ArrayMapVal array = ArrayMapVal(vals, name);
this->InputArrays[idx] = array;
this->Modified();
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::FindInLocators(double* x, vtkLagrangianParticle* particle)
{
vtkIdType cellId;
vtkDataSet* dataset;
vtkAbstractCellLocator* loc;
double* weights;
return this->FindInLocators(x, particle, dataset, cellId, loc, weights);
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::FindInLocators(
double* x, vtkLagrangianParticle* particle, vtkDataSet*& dataset, vtkIdType& cellId)
{
vtkAbstractCellLocator* loc;
double* weights;
return this->FindInLocators(x, particle, dataset, cellId, loc, weights);
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::FindInLocators(double* x, vtkLagrangianParticle* particle,
vtkDataSet*& dataset, vtkIdType& cellId, vtkAbstractCellLocator*& loc, double*& weights)
{
// Sanity check
if (this->DataSets->empty())
{
return false;
}
vtkLagrangianThreadedData* data = particle->GetThreadedData();
vtkGenericCell* cell = data->GenericCell;
cellId = data->LastCellId;
double* lastPosition = data->LastCellPosition;
weights = &data->LastWeights[0];
if (data->LastDataSetIndex != -1)
{
loc = (*this->Locators)[data->LastDataSetIndex];
dataset = (*this->DataSets)[data->LastDataSetIndex];
// Check the last cell
if (cellId != -1)
{
// Check if previous call was the same
if (lastPosition[0] == x[0] && lastPosition[1] == x[1] && lastPosition[2] == x[2])
{
return true;
}
// If not, check if new position is in the same cell
double pcoords[3];
int subId;
double dist2;
dataset->GetCell(cellId, cell);
if (cell->EvaluatePosition(x, nullptr, subId, pcoords, dist2, weights) == 1)
{
std::copy(x, x + 3, data->LastCellPosition);
return true;
}
}
// Not in provided cell cache, try the whole dataset
cellId = this->FindInLocator(dataset, loc, x, cell, weights);
if (cellId != -1)
{
data->LastCellId = cellId;
std::copy(x, x + 3, data->LastCellPosition);
return true;
}
}
// No cache or Cache miss, try other datasets
for (size_t iDs = 0; iDs < this->DataSets->size(); iDs++)
{
loc = (*this->Locators)[iDs];
dataset = (*this->DataSets)[iDs];
if (static_cast<int>(iDs) != data->LastDataSetIndex)
{
cellId = this->FindInLocator(dataset, loc, x, cell, weights);
if (cellId != -1)
{
// Store the found cell for caching purpose
data->LastDataSetIndex = static_cast<int>(iDs);
data->LastCellId = cellId;
std::copy(x, x + 3, data->LastCellPosition);
return true;
}
}
}
data->LastCellId = -1;
loc = nullptr;
dataset = nullptr;
return false;
}
//------------------------------------------------------------------------------
vtkIdType vtkLagrangianBasicIntegrationModel::FindInLocator(vtkDataSet* dataSet,
vtkAbstractCellLocator* loc, double* x, vtkGenericCell* cell, double* weights)
{
double pcoords[3];
vtkIdType cellId;
if (loc)
{
// Use locator to find the cell containing x
cellId = loc->FindCell(x, this->Tolerance, cell, pcoords, weights);
}
else
{
// No locator, dataSet is vtkImageData or vtkRectilinearGrid,
// which does not require any cellToUse when calling FindCell.
int subId;
cellId = dataSet->FindCell(x, nullptr, cell, 0, this->Tolerance, subId, pcoords, weights);
}
// Ignore Ghost cells
if (cellId != -1 && dataSet->GetCellGhostArray() &&
dataSet->GetCellGhostArray()->GetValue(cellId) & vtkDataSetAttributes::DUPLICATECELL)
{
return -1;
}
return cellId;
}
//------------------------------------------------------------------------------
vtkAbstractArray* vtkLagrangianBasicIntegrationModel::GetSeedArray(
int idx, vtkLagrangianParticle* particle)
{
return this->GetSeedArray(idx, particle->GetSeedData());
}
//------------------------------------------------------------------------------
vtkAbstractArray* vtkLagrangianBasicIntegrationModel::GetSeedArray(int idx, vtkPointData* pointData)
{
// Check the provided index
if (this->InputArrays.count(idx) == 0)
{
vtkErrorMacro(<< "No arrays at index:" << idx);
return nullptr;
}
ArrayMapVal arrayIndexes = this->InputArrays[idx];
// Check port, should be 1 for Source
if (arrayIndexes.first.val[0] != 1)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " is not a particle data array");
return nullptr;
}
// Check connection, should be 0, no multiple connection
if (arrayIndexes.first.val[1] != 0)
{
vtkErrorMacro(<< "This filter does not support multiple connections by port");
return nullptr;
}
// Check field association
switch (arrayIndexes.first.val[2])
{
case vtkDataObject::FIELD_ASSOCIATION_POINTS:
{
// Recover array
vtkAbstractArray* array = pointData->GetAbstractArray(arrayIndexes.second.c_str());
if (!array)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " cannot be found, please check arrays.");
}
return array;
}
default:
vtkErrorMacro(<< "Only FIELD_ASSOCIATION_POINTS are supported in particle data input");
}
return nullptr;
}
//------------------------------------------------------------------------------
int vtkLagrangianBasicIntegrationModel::GetFlowOrSurfaceDataNumberOfComponents(
int idx, vtkDataSet* dataSet)
{
// Check index
if (this->InputArrays.count(idx) == 0)
{
vtkErrorMacro(<< "No arrays at index:" << idx);
return -1;
}
ArrayMapVal arrayIndexes = this->InputArrays[idx];
// Check port, should be 0 for Input or 2 for Surface
if (arrayIndexes.first.val[0] != 0 && arrayIndexes.first.val[0] != 2)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " is not a flow or surface data array");
return -1;
}
// Check connection, should be 0, no multiple connection supported
if (arrayIndexes.first.val[1] != 0)
{
vtkErrorMacro(<< "This filter does not support multiple connections by port");
return -1;
}
// Check dataset is present
if (!dataSet)
{
vtkErrorMacro(<< "Please provide a dataSet when calling this method "
"for input arrays coming from the flow or surface");
return -1;
}
// Check fieldAssociation
switch (arrayIndexes.first.val[2])
{
// Point needs interpolation
case vtkDataObject::FIELD_ASSOCIATION_POINTS:
{
vtkDataArray* array = dataSet->GetPointData()->GetArray(arrayIndexes.second.c_str());
if (!array)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " cannot be found, please check arrays.");
return -1;
}
return array->GetNumberOfComponents();
}
case vtkDataObject::FIELD_ASSOCIATION_CELLS:
{
vtkDataArray* array = dataSet->GetCellData()->GetArray(arrayIndexes.second.c_str());
if (!array)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " cannot be found, please check arrays.");
return -1;
}
return array->GetNumberOfComponents();
}
case vtkDataObject::FIELD_ASSOCIATION_NONE:
{
vtkDataArray* array = dataSet->GetFieldData()->GetArray(arrayIndexes.second.c_str());
if (!array)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " cannot be found, please check arrays.");
return false;
}
return array->GetNumberOfComponents();
}
default:
vtkErrorMacro(<< "Only FIELD_ASSOCIATION_POINTS and FIELD_ASSOCIATION_CELLS "
<< "are supported in this method");
}
return -1;
}
//------------------------------------------------------------------------------
bool vtkLagrangianBasicIntegrationModel::GetFlowOrSurfaceData(vtkLagrangianParticle* particle,
int idx, vtkDataSet* dataSet, vtkIdType tupleId, double* weights, double* data)
{
// Check index
if (this->InputArrays.count(idx) == 0)
{
vtkErrorMacro(<< "No arrays at index:" << idx);
return false;
}
ArrayMapVal arrayIndexes = this->InputArrays[idx];
// Check port, should be 0 for Input or 2 for Surface
if (arrayIndexes.first.val[0] != 0 && arrayIndexes.first.val[0] != 2)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " is not a flow or surface data array");
return false;
}
// Check connection, should be 0, no multiple connection supported
if (arrayIndexes.first.val[1] != 0)
{
vtkErrorMacro(<< "This filter does not support multiple connections by port");
return false;
}
// Check dataset is present
if (!dataSet)
{
vtkErrorMacro(<< "Please provide a dataSet when calling this method "
"for input arrays coming from the flow or surface");
return false;
}
// Check fieldAssociation
switch (arrayIndexes.first.val[2])
{
// Point needs interpolation
case vtkDataObject::FIELD_ASSOCIATION_POINTS:
{
if (!weights)
{
vtkErrorMacro(<< "This input array at idx " << idx << " named " << arrayIndexes.second
<< " is a PointData, yet no weights have been provided");
return false;
}