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vtkDataArray.cxx
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vtkDataArray.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkDataArray.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 "vtkArrayDispatch.h"
#include "vtkAOSDataArrayTemplate.h" // For fast paths
#include "vtkDataArray.h"
#include "vtkDataArrayAccessor.h"
#include "vtkDataArrayPrivate.txx"
#include "vtkBitArray.h"
#include "vtkCharArray.h"
#include "vtkDoubleArray.h"
#include "vtkFloatArray.h"
#include "vtkGenericDataArray.h"
#include "vtkInformation.h"
#include "vtkInformationDoubleVectorKey.h"
#include "vtkInformationInformationVectorKey.h"
#include "vtkInformationStringKey.h"
#include "vtkInformationVector.h"
#include "vtkIdTypeArray.h"
#include "vtkIntArray.h"
#include "vtkIdList.h"
#include "vtkLookupTable.h"
#include "vtkLongArray.h"
#include "vtkMath.h"
#include "vtkSOADataArrayTemplate.h" // For fast paths
#include "vtkShortArray.h"
#include "vtkSignedCharArray.h"
#include "vtkTypeTraits.h"
#include "vtkUnsignedCharArray.h"
#include "vtkUnsignedIntArray.h"
#include "vtkUnsignedLongArray.h"
#include "vtkUnsignedShortArray.h"
#include <algorithm> // for min(), max()
namespace {
//--------Copy tuples from src to dest------------------------------------------
struct DeepCopyWorker
{
// AoS --> AoS same-type specialization:
template <typename ValueType>
void operator()(vtkAOSDataArrayTemplate<ValueType> *src,
vtkAOSDataArrayTemplate<ValueType> *dst)
{
std::copy(src->Begin(), src->End(), dst->Begin());
}
// SoA --> SoA same-type specialization:
template <typename ValueType>
void operator()(vtkSOADataArrayTemplate<ValueType> *src,
vtkSOADataArrayTemplate<ValueType> *dst)
{
vtkIdType numTuples = src->GetNumberOfTuples();
for (int comp; comp < src->GetNumberOfComponents(); ++comp)
{
ValueType *srcBegin = src->GetComponentArrayPointer(comp);
ValueType *srcEnd = srcBegin + numTuples;
ValueType *dstBegin = dst->GetComponentArrayPointer(comp);
std::copy(srcBegin, srcEnd, dstBegin);
}
}
// Generic implementation:
template <typename Array1T, typename Array2T>
void operator()(Array1T *src, Array2T *dst)
{
vtkDataArrayAccessor<Array1T> s(src);
vtkDataArrayAccessor<Array2T> d(dst);
typedef typename vtkDataArrayAccessor<Array2T>::APIType DestType;
vtkIdType tuples = src->GetNumberOfTuples();
int comps = src->GetNumberOfComponents();
for (vtkIdType t = 0; t < tuples; ++t)
{
for (int c = 0; c < comps; ++c)
{
d.Set(t, c, static_cast<DestType>(s.Get(t, c)));
}
}
}
};
//------------InterpolateTuple workers------------------------------------------
struct InterpolateMultiTupleWorker
{
vtkIdType DestTuple;
vtkIdType *TupleIds;
vtkIdType NumTuples;
double *Weights;
InterpolateMultiTupleWorker(vtkIdType destTuple, vtkIdType *tupleIds,
vtkIdType numTuples, double *weights)
: DestTuple(destTuple), TupleIds(tupleIds), NumTuples(numTuples),
Weights(weights)
{}
template <typename Array1T, typename Array2T>
void operator()(Array1T *src, Array2T *dst)
{
vtkDataArrayAccessor<Array1T> s(src);
vtkDataArrayAccessor<Array2T> d(dst);
typedef typename vtkDataArrayAccessor<Array2T>::APIType DestType;
int numComp = src->GetNumberOfComponents();
for (int c = 0; c < numComp; ++c)
{
double val = 0.;
for (vtkIdType tupleId = 0; tupleId < this->NumTuples; ++tupleId)
{
vtkIdType t = this->TupleIds[tupleId];
double weight = this->Weights[tupleId];
val += weight * static_cast<double>(s.Get(t, c));
}
DestType valT;
vtkMath::RoundDoubleToIntegralIfNecessary(val, &valT);
d.Insert(this->DestTuple, c, valT);
}
}
};
struct InterpolateTupleWorker
{
vtkIdType SrcTuple1;
vtkIdType SrcTuple2;
vtkIdType DstTuple;
double Weight;
InterpolateTupleWorker(vtkIdType srcTuple1, vtkIdType srcTuple2,
vtkIdType dstTuple, double weight)
: SrcTuple1(srcTuple1), SrcTuple2(srcTuple2), DstTuple(dstTuple),
Weight(weight)
{}
template <typename Array1T, typename Array2T, typename Array3T>
void operator()(Array1T *src1, Array2T *src2, Array3T *dst)
{
vtkDataArrayAccessor<Array1T> s1(src1);
vtkDataArrayAccessor<Array2T> s2(src2);
vtkDataArrayAccessor<Array3T> d(dst);
typedef typename vtkDataArrayAccessor<Array3T>::APIType DestType;
const int numComps = dst->GetNumberOfComponents();
const double oneMinusT = 1. - this->Weight;
double val;
DestType valT;
for (int c = 0; c < numComps; ++c)
{
val = s1.Get(this->SrcTuple1, c) * oneMinusT +
s2.Get(this->SrcTuple2, c) * this->Weight;
vtkMath::RoundDoubleToIntegralIfNecessary(val, &valT);
d.Insert(this->DstTuple, c, valT);
}
}
};
//-----------------GetTuples (id list)------------------------------------------
struct GetTuplesFromListWorker
{
vtkIdList *Ids;
GetTuplesFromListWorker(vtkIdList *ids) : Ids(ids) {}
template <typename Array1T, typename Array2T>
void operator()(Array1T *src, Array2T *dst)
{
vtkDataArrayAccessor<Array1T> s(src);
vtkDataArrayAccessor<Array2T> d(dst);
typedef typename vtkDataArrayAccessor<Array2T>::APIType DestType;
int numComps = src->GetNumberOfComponents();
vtkIdType *srcTuple = this->Ids->GetPointer(0);
vtkIdType *srcTupleEnd = this->Ids->GetPointer(Ids->GetNumberOfIds());
vtkIdType dstTuple = 0;
while (srcTuple != srcTupleEnd)
{
for (int c = 0; c < numComps; ++c)
{
d.Set(dstTuple, c, static_cast<DestType>(s.Get(*srcTuple, c)));
}
++srcTuple;
++dstTuple;
}
}
};
//-----------------GetTuples (tuple range)--------------------------------------
struct GetTuplesRangeWorker
{
vtkIdType Start;
vtkIdType End; // Note that End is inclusive.
GetTuplesRangeWorker(vtkIdType start, vtkIdType end)
: Start(start), End(end)
{}
template <typename Array1T, typename Array2T>
void operator()(Array1T *src, Array2T *dst)
{
vtkDataArrayAccessor<Array1T> s(src);
vtkDataArrayAccessor<Array2T> d(dst);
typedef typename vtkDataArrayAccessor<Array2T>::APIType DestType;
int numComps = src->GetNumberOfComponents();
for (vtkIdType srcT = this->Start, dstT = 0;
srcT <= this->End;
++srcT, ++dstT)
{
for (int c = 0; c < numComps; ++c)
{
d.Set(dstT, c, static_cast<DestType>(s.Get(srcT, c)));
}
}
}
};
//----------------SetTuple (from array)-----------------------------------------
struct SetTupleArrayWorker
{
vtkIdType SrcTuple;
vtkIdType DstTuple;
SetTupleArrayWorker(vtkIdType srcTuple, vtkIdType dstTuple)
: SrcTuple(srcTuple), DstTuple(dstTuple)
{}
template <typename SrcArrayT, typename DstArrayT>
void operator()(SrcArrayT *src, DstArrayT *dst)
{
vtkDataArrayAccessor<SrcArrayT> s(src);
vtkDataArrayAccessor<DstArrayT> d(dst);
typedef typename vtkDataArrayAccessor<DstArrayT>::APIType DestType;
int numComps = src->GetNumberOfComponents();
for (int c = 0; c < numComps; ++c)
{
d.Set(this->DstTuple, c, static_cast<DestType>(s.Get(this->SrcTuple, c)));
}
}
};
//----------------SetTuples (from array+vtkIdList)------------------------------
struct SetTuplesIdListWorker
{
vtkIdList *SrcTuples;
vtkIdList *DstTuples;
SetTuplesIdListWorker(vtkIdList *srcTuples, vtkIdList *dstTuples)
: SrcTuples(srcTuples), DstTuples(dstTuples)
{}
template <typename SrcArrayT, typename DstArrayT>
void operator()(SrcArrayT *src, DstArrayT *dst)
{
vtkDataArrayAccessor<SrcArrayT> s(src);
vtkDataArrayAccessor<DstArrayT> d(dst);
typedef typename vtkDataArrayAccessor<DstArrayT>::APIType DestType;
vtkIdType numTuples = this->SrcTuples->GetNumberOfIds();
int numComps = src->GetNumberOfComponents();
for (vtkIdType t = 0; t < numTuples; ++t)
{
vtkIdType srcT = this->SrcTuples->GetId(t);
vtkIdType dstT = this->DstTuples->GetId(t);
for (int c = 0; c < numComps; ++c)
{
d.Set(dstT, c, static_cast<DestType>(s.Get(srcT, c)));
}
}
}
};
//----------------SetTuples (from array+range)----------------------------------
struct SetTuplesRangeWorker
{
vtkIdType SrcStartTuple;
vtkIdType DstStartTuple;
vtkIdType NumTuples;
SetTuplesRangeWorker(vtkIdType srcStartTuple, vtkIdType dstStartTuple,
vtkIdType numTuples)
: SrcStartTuple(srcStartTuple), DstStartTuple(dstStartTuple),
NumTuples(numTuples)
{}
// Generic implementation. We perform the obvious optimizations for AOS/SOA
// in the derived class implementations.
template <typename SrcArrayT, typename DstArrayT>
void operator()(SrcArrayT *src, DstArrayT *dst)
{
vtkDataArrayAccessor<SrcArrayT> s(src);
vtkDataArrayAccessor<DstArrayT> d(dst);
typedef typename vtkDataArrayAccessor<DstArrayT>::APIType DestType;
int numComps = src->GetNumberOfComponents();
vtkIdType srcT = this->SrcStartTuple;
vtkIdType srcTEnd = srcT + this->NumTuples;
vtkIdType dstT = this->DstStartTuple;
while (srcT < srcTEnd)
{
for (int c = 0; c < numComps; ++c)
{
d.Set(dstT, c, static_cast<DestType>(s.Get(srcT, c)));
}
++srcT;
++dstT;
}
}
};
template<typename InfoType, typename KeyType>
bool hasValidKey(InfoType info, KeyType key,
vtkMTimeType mtime, double range[2] )
{
if ( info->Has( key ) )
{
if ( mtime <= info->GetMTime() )
{
info->Get( key, range );
return true;
}
}
return false;
}
template<typename InfoType, typename KeyType, typename ComponentKeyType>
bool hasValidKey(InfoType info, KeyType key, ComponentKeyType ckey,
vtkMTimeType mtime, double range[2], int comp )
{
if ( info->Has( key ) )
{
if ( mtime <= info->GetMTime() )
{
info->Get( key )->GetInformationObject(comp)->Get( ckey, range );
return true;
}
}
return false;
}
} // end anon namespace
vtkInformationKeyRestrictedMacro(vtkDataArray, COMPONENT_RANGE, DoubleVector, 2);
vtkInformationKeyRestrictedMacro(vtkDataArray, L2_NORM_RANGE, DoubleVector, 2);
vtkInformationKeyMacro(vtkDataArray, UNITS_LABEL, String);
//----------------------------------------------------------------------------
// Construct object with default tuple dimension (number of components) of 1.
vtkDataArray::vtkDataArray()
{
this->LookupTable = NULL;
this->FiniteInformation = NULL;
this->Range[0] = 0;
this->Range[1] = 0;
this->FiniteRange[0] = 0;
this->FiniteRange[1] = 0;
}
//----------------------------------------------------------------------------
vtkDataArray::~vtkDataArray()
{
if ( this->LookupTable )
{
this->LookupTable->Delete();
}
this->SetName(0);
this->SetFiniteInformation(NULL);
}
//----------------------------------------------------------------------------
void vtkDataArray::DeepCopy(vtkAbstractArray* aa)
{
if ( aa == NULL )
{
return;
}
vtkDataArray *da = vtkDataArray::FastDownCast(aa);
if (da == NULL)
{
vtkErrorMacro(<< "Input array is not a vtkDataArray ("
<< aa->GetClassName() << ")");
return;
}
this->DeepCopy(da);
}
//----------------------------------------------------------------------------
//Normally subclasses will do this when the input and output type of the
//DeepCopy are the same. When they are not the same, then we use the
//templated code below.
void vtkDataArray::DeepCopy(vtkDataArray *da)
{
// Match the behavior of the old AttributeData
if ( da == NULL )
{
return;
}
if ( this != da )
{
this->Superclass::DeepCopy( da ); // copy Information object
vtkIdType numTuples = da->GetNumberOfTuples();
int numComps = da->NumberOfComponents;
this->SetNumberOfComponents(numComps);
this->SetNumberOfTuples(numTuples);
DeepCopyWorker worker;
if (!vtkArrayDispatch::Dispatch2::Execute(da, this, worker))
{
// If dispatch fails, use fallback:
worker(da, this);
}
this->SetLookupTable(0);
if (da->LookupTable)
{
this->LookupTable = da->LookupTable->NewInstance();
this->LookupTable->DeepCopy(da->LookupTable);
}
}
this->Squeeze();
}
//------------------------------------------------------------------------------
void vtkDataArray::ShallowCopy(vtkDataArray *other)
{
// Deep copy by default. Subclasses may override this behavior.
this->DeepCopy(other);
}
//------------------------------------------------------------------------------
void vtkDataArray::SetTuple(vtkIdType dstTupleIdx, vtkIdType srcTupleIdx,
vtkAbstractArray *source)
{
vtkDataArray *srcDA = vtkDataArray::FastDownCast(source);
if (!srcDA)
{
vtkErrorMacro("Source array must be a vtkDataArray subclass (got "
<< source->GetClassName() << ").");
return;
}
if (!vtkDataTypesCompare(source->GetDataType(), this->GetDataType()))
{
vtkErrorMacro("Type mismatch: Source: " << source->GetDataTypeAsString()
<< " Dest: " << this->GetDataTypeAsString());
return;
}
if (source->GetNumberOfComponents() != this->GetNumberOfComponents())
{
vtkErrorMacro("Number of components do not match: Source: "
<< source->GetNumberOfComponents() << " Dest: "
<< this->GetNumberOfComponents());
return;
}
SetTupleArrayWorker worker(srcTupleIdx, dstTupleIdx);
if (!vtkArrayDispatch::Dispatch2SameValueType::Execute(srcDA, this, worker))
{
worker(srcDA, this);
}
}
//----------------------------------------------------------------------------
void vtkDataArray::SetTuple(vtkIdType i, const float *source)
{
for (int c = 0; c < this->NumberOfComponents; ++c)
{
this->SetComponent(i, c, static_cast<double>(source[c]));
}
}
//----------------------------------------------------------------------------
void vtkDataArray::SetTuple(vtkIdType i, const double *source)
{
for (int c = 0; c < this->NumberOfComponents; ++c)
{
this->SetComponent(i, c, source[c]);
}
}
//----------------------------------------------------------------------------
void vtkDataArray::InsertTuple(vtkIdType dstTupleIdx, vtkIdType srcTupleIdx,
vtkAbstractArray *source)
{
vtkIdType newSize = (dstTupleIdx + 1) * this->NumberOfComponents;
if (this->Size < newSize)
{
if (!this->Resize(dstTupleIdx + 1))
{
vtkErrorMacro("Resize failed.");
return;
}
}
this->MaxId = std::max(this->MaxId, newSize - 1);
this->SetTuple(dstTupleIdx, srcTupleIdx, source);
}
//----------------------------------------------------------------------------
vtkIdType vtkDataArray::InsertNextTuple(vtkIdType srcTupleIdx,
vtkAbstractArray *source)
{
vtkIdType tupleIdx = this->GetNumberOfTuples();
this->InsertTuple(tupleIdx, srcTupleIdx, source);
return tupleIdx;
}
//----------------------------------------------------------------------------
void vtkDataArray::InsertTuples(vtkIdList *dstIds, vtkIdList *srcIds,
vtkAbstractArray *src)
{
if (dstIds->GetNumberOfIds() == 0)
{
return;
}
if (dstIds->GetNumberOfIds() != srcIds->GetNumberOfIds())
{
vtkErrorMacro("Mismatched number of tuples ids. Source: "
<< srcIds->GetNumberOfIds() << " Dest: "
<< dstIds->GetNumberOfIds());
return;
}
if (!vtkDataTypesCompare(src->GetDataType(), this->GetDataType()))
{
vtkErrorMacro("Data type mismatch: Source: " << src->GetDataTypeAsString()
<< " Dest: " << this->GetDataTypeAsString());
return;
}
if (src->GetNumberOfComponents() != this->GetNumberOfComponents())
{
vtkErrorMacro("Number of components do not match: Source: "
<< src->GetNumberOfComponents() << " Dest: "
<< this->GetNumberOfComponents());
return;
}
vtkDataArray *srcDA = vtkDataArray::FastDownCast(src);
if (!srcDA)
{
vtkErrorMacro("Source array must be a subclass of vtkDataArray. Got: "
<< src->GetClassName());
return;
}
vtkIdType maxSrcTupleId = srcIds->GetId(0);
vtkIdType maxDstTupleId = dstIds->GetId(0);
for (int i = 1; i < dstIds->GetNumberOfIds(); ++i)
{
maxSrcTupleId = std::max(maxSrcTupleId, srcIds->GetId(i));
maxDstTupleId = std::max(maxDstTupleId, dstIds->GetId(i));
}
if (maxSrcTupleId >= src->GetNumberOfTuples())
{
vtkErrorMacro("Source array too small, requested tuple at index "
<< maxSrcTupleId << ", but there are only "
<< src->GetNumberOfTuples() << " tuples in the array.");
return;
}
vtkIdType newSize = (maxDstTupleId + 1) * this->NumberOfComponents;
if (this->Size < newSize)
{
if (!this->Resize(maxDstTupleId + 1))
{
vtkErrorMacro("Resize failed.");
return;
}
}
this->MaxId = std::max(this->MaxId, newSize - 1);
SetTuplesIdListWorker worker(srcIds, dstIds);
if (!vtkArrayDispatch::Dispatch2SameValueType::Execute(srcDA, this, worker))
{
worker(srcDA, this);
}
}
//----------------------------------------------------------------------------
void vtkDataArray::InsertTuples(vtkIdType dstStart, vtkIdType n,
vtkIdType srcStart, vtkAbstractArray *src)
{
if (n == 0)
{
return;
}
if (!vtkDataTypesCompare(src->GetDataType(), this->GetDataType()))
{
vtkErrorMacro("Data type mismatch: Source: " << src->GetDataTypeAsString()
<< " Dest: " << this->GetDataTypeAsString());
return;
}
if (src->GetNumberOfComponents() != this->GetNumberOfComponents())
{
vtkErrorMacro("Number of components do not match: Source: "
<< src->GetNumberOfComponents() << " Dest: "
<< this->GetNumberOfComponents());
return;
}
vtkDataArray *srcDA = vtkDataArray::FastDownCast(src);
if (!srcDA)
{
vtkErrorMacro("Source array must be a subclass of vtkDataArray. Got: "
<< src->GetClassName());
return;
}
vtkIdType maxSrcTupleId = srcStart + n - 1;
vtkIdType maxDstTupleId = dstStart + n - 1;
if (maxSrcTupleId >= src->GetNumberOfTuples())
{
vtkErrorMacro("Source array too small, requested tuple at index "
<< maxSrcTupleId << ", but there are only "
<< src->GetNumberOfTuples() << " tuples in the array.");
return;
}
vtkIdType newSize = (maxDstTupleId + 1) * this->NumberOfComponents;
if (this->Size < newSize)
{
if (!this->Resize(maxDstTupleId + 1))
{
vtkErrorMacro("Resize failed.");
return;
}
}
this->MaxId = std::max(this->MaxId, newSize - 1);
SetTuplesRangeWorker worker(srcStart, dstStart, n);
if (!vtkArrayDispatch::Dispatch2SameValueType::Execute(srcDA, this, worker))
{
worker(srcDA, this);
}
}
//----------------------------------------------------------------------------
// These can be overridden for more efficiency
double vtkDataArray::GetComponent(vtkIdType tupleIdx, int compIdx)
{
double *tuple=new double[this->NumberOfComponents], c;
this->GetTuple(tupleIdx,tuple);
c = tuple[compIdx];
delete [] tuple;
return c;
}
//----------------------------------------------------------------------------
void vtkDataArray::SetComponent(vtkIdType tupleIdx, int compIdx, double value)
{
double *tuple=new double[this->NumberOfComponents];
if ( tupleIdx < this->GetNumberOfTuples() )
{
this->GetTuple(tupleIdx,tuple);
}
else
{
for (int k=0; k<this->NumberOfComponents; k++)
{
tuple[k] = 0.0;
}
}
tuple[compIdx] = value;
this->SetTuple(tupleIdx,tuple);
delete [] tuple;
}
//----------------------------------------------------------------------------
void vtkDataArray::InsertComponent(vtkIdType tupleIdx, int compIdx,
double value)
{
double *tuple=new double[this->NumberOfComponents];
if ( tupleIdx < this->GetNumberOfTuples() )
{
this->GetTuple(tupleIdx,tuple);
}
else
{
for (int k=0; k<this->NumberOfComponents; k++)
{
tuple[k] = 0.0;
}
}
tuple[compIdx] = value;
this->InsertTuple(tupleIdx,tuple);
delete [] tuple;
}
//----------------------------------------------------------------------------
void vtkDataArray::GetData(vtkIdType tupleMin, vtkIdType tupleMax, int compMin,
int compMax, vtkDoubleArray* data)
{
int i;
vtkIdType j;
int numComp=this->GetNumberOfComponents();
double *tuple=new double[numComp];
double *ptr=data->WritePointer(0,(tupleMax-tupleMin+1)*(compMax-compMin+1));
for (j=tupleMin; j <= tupleMax; j++)
{
this->GetTuple(j,tuple);
for (i=compMin; i <= compMax; i++)
{
*ptr++ = tuple[i];
}
}
delete [] tuple;
}
//----------------------------------------------------------------------------
// Interpolate array value from other array value given the
// indices and associated interpolation weights.
// This method assumes that the two arrays are of the same time.
void vtkDataArray::InterpolateTuple(vtkIdType dstTupleIdx, vtkIdList *tupleIds,
vtkAbstractArray* source, double* weights)
{
if (!vtkDataTypesCompare(this->GetDataType(), source->GetDataType()))
{
vtkErrorMacro("Cannot interpolate arrays of different type.");
return;
}
vtkDataArray *da = vtkDataArray::FastDownCast(source);
if (!da)
{
vtkErrorMacro(<<"Source array is not a vtkDataArray.");
return;
}
int numComps = this->GetNumberOfComponents();
if (da->GetNumberOfComponents() != numComps)
{
vtkErrorMacro("Number of components do not match: Source: "
<< source->GetNumberOfComponents() << " Dest: "
<< this->GetNumberOfComponents());
return;
}
vtkIdType numIds=tupleIds->GetNumberOfIds();
vtkIdType *ids=tupleIds->GetPointer(0);
bool fallback = da->GetDataType() == VTK_BIT ||
this->GetDataType() == VTK_BIT;
if (!fallback)
{
InterpolateMultiTupleWorker worker(dstTupleIdx, ids, numIds, weights);
// Use fallback if dispatch fails.
fallback = !vtkArrayDispatch::Dispatch2SameValueType::Execute(da, this,
worker);
}
// Fallback to a separate implementation that checks vtkDataArray::GetDataType
// rather than relying on API types, since we'll need to round differently
// depending on type, and the API type for vtkDataArray is always double.
if (fallback)
{
bool doRound = !(this->GetDataType() == VTK_FLOAT ||
this->GetDataType() == VTK_DOUBLE);
double typeMin = this->GetDataTypeMin();
double typeMax = this->GetDataTypeMax();
for (int c = 0; c < numComps; ++c)
{
double val = 0.;
for (vtkIdType j = 0; j < numIds; ++j)
{
val += weights[j] * da->GetComponent(ids[j], c);
}
// Clamp to data type range:
val = std::max(val, typeMin);
val = std::min(val, typeMax);
// Round for floating point types:
if (doRound)
{
val = std::floor((val >= 0.) ? (val + 0.5) : (val - 0.5));
}
this->InsertComponent(dstTupleIdx, c, val);
}
}
}
//----------------------------------------------------------------------------
// Interpolate value from the two values, p1 and p2, and an
// interpolation factor, t. The interpolation factor ranges from (0,1),
// with t=0 located at p1. This method assumes that the three arrays are of
// the same type. p1 is value at index id1 in fromArray1, while, p2 is
// value at index id2 in fromArray2.
void vtkDataArray::InterpolateTuple(vtkIdType dstTuple,
vtkIdType srcTuple1, vtkAbstractArray* source1,
vtkIdType srcTuple2, vtkAbstractArray* source2, double t)
{
int type = this->GetDataType();
if (!vtkDataTypesCompare(type, source1->GetDataType()) ||
!vtkDataTypesCompare(type, source2->GetDataType()))
{
vtkErrorMacro("All arrays to InterpolateValue must be of same type.");
return;
}
if (srcTuple1 >= source1->GetNumberOfTuples())
{
vtkErrorMacro("Tuple 1 out of range for provided array. "
"Requested tuple: " << srcTuple1 << " "
"Tuples: " << source1->GetNumberOfTuples());
return;
}
if (srcTuple2 >= source2->GetNumberOfTuples())
{
vtkErrorMacro("Tuple 2 out of range for provided array. "
"Requested tuple: " << srcTuple2 << " "
"Tuples: " << source2->GetNumberOfTuples());
return;
}
vtkDataArray *src1DA = vtkDataArray::FastDownCast(source1);
vtkDataArray *src2DA = vtkDataArray::FastDownCast(source2);
if (!src1DA || !src2DA)
{
vtkErrorMacro("Both arrays must be vtkDataArray subclasses.");
return;
}
bool fallback = type == VTK_BIT;
if (!fallback)
{
InterpolateTupleWorker worker(srcTuple1, srcTuple2, dstTuple, t);
// Use fallback if dispatch fails:
fallback = !vtkArrayDispatch::Dispatch3SameValueType::Execute(
src1DA, src2DA, this, worker);
}
// Fallback to a separate implementation that checks vtkDataArray::GetDataType
// rather than relying on API types, since we'll need to round differently
// depending on type, and the API type for vtkDataArray is always double.
if (fallback)
{
bool doRound = !(this->GetDataType() == VTK_FLOAT ||
this->GetDataType() == VTK_DOUBLE);
double typeMin = this->GetDataTypeMin();
double typeMax = this->GetDataTypeMax();
int numComp = source1->GetNumberOfComponents();
double in1;
double in2;
double out;
for (int c = 0; c < numComp; c++)
{
in1 = src1DA->GetComponent(srcTuple1, c);
in2 = src2DA->GetComponent(srcTuple2, c);
out = in1 + t * (in2 - in1);
// Clamp to datatype range:
out = std::max(out, typeMin);
out = std::min(out, typeMax);
// Round if needed:
if (doRound)
{
out = std::floor((out >= 0.) ? (out + 0.5) : (out - 0.5));
}
this->InsertComponent(dstTuple, c, out);
}
}
}
//----------------------------------------------------------------------------
void vtkDataArray::CreateDefaultLookupTable()
{
if ( this->LookupTable )
{
this->LookupTable->UnRegister(this);
}
this->LookupTable = vtkLookupTable::New();
// make sure it is built
// otherwise problems with InsertScalar trying to map through
// non built lut
this->LookupTable->Build();
}
//----------------------------------------------------------------------------
void vtkDataArray::SetLookupTable(vtkLookupTable* lut)
{
if ( this->LookupTable != lut )
{
if ( this->LookupTable )
{
this->LookupTable->UnRegister(this);
}
this->LookupTable = lut;
if ( this->LookupTable )
{
this->LookupTable->Register(this);
}
this->Modified();
}
}
//----------------------------------------------------------------------------
double* vtkDataArray::GetTupleN(vtkIdType i, int n)
{
int numComp = this->GetNumberOfComponents();
if (numComp != n)
{
vtkErrorMacro("The number of components do not match the number requested: "
<< numComp << " != " << n);
}
return this->GetTuple(i);
}
//----------------------------------------------------------------------------
double vtkDataArray::GetTuple1(vtkIdType i)
{
int numComp = this->GetNumberOfComponents();
if (numComp != 1)
{
vtkErrorMacro("The number of components do not match the number requested: "
<< numComp << " != 1");
}
return *(this->GetTuple(i));
}
//----------------------------------------------------------------------------
double* vtkDataArray::GetTuple2(vtkIdType i)
{
return this->GetTupleN(i, 2);
}
//----------------------------------------------------------------------------
double* vtkDataArray::GetTuple3(vtkIdType i)
{
return this->GetTupleN(i, 3);
}
//----------------------------------------------------------------------------
double* vtkDataArray::GetTuple4(vtkIdType i)
{
return this->GetTupleN(i, 4);
}
//----------------------------------------------------------------------------
double* vtkDataArray::GetTuple6(vtkIdType i)
{
return this->GetTupleN(i, 6);
}
//----------------------------------------------------------------------------
double* vtkDataArray::GetTuple9(vtkIdType i)
{
return this->GetTupleN(i, 9);
}
//----------------------------------------------------------------------------
void vtkDataArray::SetTuple1(vtkIdType i, double value)
{
int numComp = this->GetNumberOfComponents();
if (numComp != 1)