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/*=========================================================================
Program: Visualization Toolkit
Module: vtkSMPMergePoints.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 "vtkSMPMergePoints.h"
#include "vtkPoints.h"
#include "vtkIdList.h"
#include "vtkObjectFactory.h"
#include "vtkFloatArray.h"
#include "vtkPointData.h"
//------------------------------------------------------------------------------
vtkStandardNewMacro(vtkSMPMergePoints)
//------------------------------------------------------------------------------
vtkSMPMergePoints::vtkSMPMergePoints()
{
}
//------------------------------------------------------------------------------
vtkSMPMergePoints::~vtkSMPMergePoints()
{
}
//------------------------------------------------------------------------------
void vtkSMPMergePoints::PrintSelf(ostream &os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//------------------------------------------------------------------------------
void vtkSMPMergePoints::InitializeMerge()
{
this->AtomicInsertionId = this->InsertionPointId;
}
//------------------------------------------------------------------------------
void vtkSMPMergePoints::Merge(vtkSMPMergePoints* locator,
vtkIdType idx,
vtkPointData* outPd,
vtkPointData* ptData,
vtkIdList* idList )
{
if ( !locator->HashTable[idx] )
{
return;
}
vtkIdType i;
vtkIdList *bucket, *oldIdToMerge;
vtkFloatArray* floatOldDataArray = 0;
if ( !(bucket = this->HashTable[idx]) )
{
this->HashTable[idx] = bucket = vtkIdList::New();
bucket->Allocate( this->NumberOfPointsPerBucket/2,
this->NumberOfPointsPerBucket/3 );
oldIdToMerge = locator->HashTable[idx];
oldIdToMerge->Register( this );
if ( this->Points->GetData()->GetDataType() == VTK_FLOAT )
{
floatOldDataArray = static_cast<vtkFloatArray*>( locator->Points->GetData() );
}
}
else
{
oldIdToMerge = vtkIdList::New();
int nbOfIds = bucket->GetNumberOfIds ();
int nbOfOldIds = locator->HashTable[idx]->GetNumberOfIds();
oldIdToMerge->Allocate( nbOfOldIds );
vtkDataArray *dataArray = this->Points->GetData();
vtkDataArray *oldDataArray = locator->Points->GetData();
vtkIdType *idArray = bucket->GetPointer(0);
vtkIdType *idOldArray = locator->HashTable[idx]->GetPointer(0);
bool found;
if (dataArray->GetDataType() == VTK_FLOAT)
{
vtkFloatArray* floatDataArray = static_cast<vtkFloatArray*>(dataArray);
floatOldDataArray = static_cast<vtkFloatArray*>(oldDataArray);
for ( int oldIdIdx = 0; oldIdIdx < nbOfOldIds; ++oldIdIdx )
{
found = false;
vtkIdType oldId = idOldArray[oldIdIdx];
float *x = floatOldDataArray->GetPointer(0) + 3*oldId;
float *pt;
for ( i=0; i < nbOfIds; i++ )
{
vtkIdType existingId = idArray[i];
pt = floatDataArray->GetPointer(0) + 3*existingId;
if ( x[0] == pt[0] && x[1] == pt[1] && x[2] == pt[2] )
{
// point is already in the list, return 0 and set the id parameter
found = true;
idList->SetId( oldId, existingId );
break;
}
}
if ( !found )
{
oldIdToMerge->InsertNextId( oldId );
}
}
}
else
{
for ( int oldIdIdx = 0; oldIdIdx < nbOfOldIds; ++oldIdIdx )
{
found = false;
vtkIdType oldId = idOldArray[oldIdIdx];
double *x = oldDataArray->GetTuple( oldId );
double *pt;
for ( i=0; i < nbOfIds; i++ )
{
vtkIdType existingId = idArray[i];
pt = dataArray->GetTuple( existingId );
if ( x[0] == pt[0] && x[1] == pt[1] && x[2] == pt[2] )
{
// point is already in the list, return 0 and set the id parameter
found = true;
idList->SetId( oldId, existingId );
break;
}
}
if ( !found )
{
oldIdToMerge->InsertNextId( oldId );
}
}
}
}
// points have to be added
vtkIdType NumberOfInsertions = oldIdToMerge->GetNumberOfIds();
vtkIdType first_id = (this->AtomicInsertionId += NumberOfInsertions);
bucket->Resize( bucket->GetNumberOfIds() + NumberOfInsertions );
for ( i = 0; i < NumberOfInsertions; ++i )
{
vtkIdType newId = first_id + i, oldId = oldIdToMerge->GetId( i );
idList->SetId( oldId, newId );
bucket->InsertNextId( newId );
if ( floatOldDataArray )
{
const float *pt = floatOldDataArray->GetPointer(0) + 3*oldId;
this->Points->SetPoint( newId, pt );
}
else
{
this->Points->SetPoint( newId, locator->Points->GetPoint( oldId ) );
}
outPd->SetTuple( newId, oldId, ptData );
}
oldIdToMerge->UnRegister( this );
}
//------------------------------------------------------------------------------
void vtkSMPMergePoints::FixSizeOfPointArray()
{
this->Points->SetNumberOfPoints(this->AtomicInsertionId);
}
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