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#include "vtkAMRInterpolatedVelocityField.h"
#include "vtkObjectFactory.h"
#include "vtkUniformGrid.h"
#include "vtkOverlappingAMR.h"
#include <cassert>
//----------------------------------------------------------------------------
namespace
{
bool Inside(double q[3], double gbounds[6])
{
if ((q[0] < gbounds[0]) || (q[0] > gbounds[1]) ||
(q[1] < gbounds[2]) || (q[1] > gbounds[3]) ||
(q[2] < gbounds[4]) || (q[2] > gbounds[5]))
{
return false;
}
else
{
return true;
}
}
bool FindInLevel(double q[3], vtkOverlappingAMR *amrds, int level, unsigned int& gridId)
{
for(unsigned int i = 0; i < amrds->GetNumberOfDataSets(level); i++ )
{
double gbounds[6];
amrds->GetBounds(level,i,gbounds);
bool inside = Inside(q,gbounds);
if(inside)
{
gridId = i;
return true;
}
}
return false;
}
};
bool vtkAMRInterpolatedVelocityField::FindGrid(double q[3],vtkOverlappingAMR *amrds,
unsigned int& level, unsigned int& gridId)
{
if (!FindInLevel(q, amrds, 0,gridId))
{
return false;
}
unsigned int maxLevels = amrds->GetNumberOfLevels();
for(level=0; level<maxLevels;level++)
{
unsigned int n;
unsigned int *children = amrds->GetChildren(level, gridId,n);
if (children == NULL)
{
break;
}
unsigned int i;
for (i = 0; i < n; i++)
{
double bb[6];
amrds->GetBounds(level+1, children[i],bb);
if(Inside(q,bb))
{
gridId = children[i];
break;
}
}
if(i>=n)
{
break;
}
}
return true;
}
vtkStandardNewMacro(vtkAMRInterpolatedVelocityField);
vtkAMRInterpolatedVelocityField::vtkAMRInterpolatedVelocityField()
{
this->Weights = new double[8];
this->AmrDataSet = NULL;
this->LastLevel= this->LastId=-1;
}
vtkAMRInterpolatedVelocityField::~vtkAMRInterpolatedVelocityField()
{
delete [] this->Weights;
this->Weights = NULL;
}
void vtkAMRInterpolatedVelocityField::PrintSelf( ostream & os, vtkIndent indent )
{
this->Superclass::PrintSelf( os, indent );
}
void vtkAMRInterpolatedVelocityField::SetAMRData(vtkOverlappingAMR* amrds)
{
this->AmrDataSet = amrds;
}
int vtkAMRInterpolatedVelocityField::FunctionValues( double * x, double * f )
{
if(this->LastDataSet &&
this->FunctionValues(this->LastDataSet,x,f))
{
return 1;
}
//Either we do not know which data set it is, or existing LastDataSet does not contain x
//In any case, set LastDataSet to NULL and try to find a new one
this->LastDataSet = NULL;
this->LastCellId = -1;
this->LastLevel = -1;
this->LastId = -1;
unsigned int level, gridId;
if(!FindGrid(x,this->AmrDataSet,level,gridId))
{
return 0;
}
this->LastLevel = level;
this->LastId = gridId;
vtkDataSet* ds = this->AmrDataSet->GetDataSet(level,gridId);
if(!ds)
{
return 0;
}
if(!this->FunctionValues(ds,x,f))
{
return 0;
}
this->LastDataSet = ds;
return 1;
}
bool vtkAMRInterpolatedVelocityField::SetLastDataSet(int level, int id)
{
this->LastLevel = level;
this->LastId = id;
this->LastDataSet = this->AmrDataSet->GetDataSet(level,id);
return this->LastDataSet!=NULL;
}
void vtkAMRInterpolatedVelocityField::SetLastCellId(vtkIdType, int )
{
vtkWarningMacro("Calling SetLastCellId has no effect")
}
bool vtkAMRInterpolatedVelocityField::GetLastDataSetLocation(unsigned int& level, unsigned int& id)
{
if(this->LastLevel<0)
{
return false;
}
level = static_cast<unsigned int>( this->LastLevel );
id = static_cast<unsigned int> ( this->LastId );
return true;
}
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