itkMeasurementVectorTraits.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkMeasurementVectorTraits_h
#define itkMeasurementVectorTraits_h
 
#include "itkVariableLengthVector.h"
#include "vnl/vnl_vector_fixed.h"
#include "itkRGBPixel.h"
#include "itkMatrix.h"
#include "itkVariableSizeMatrix.h"
#include "itkNumericTraits.h"
#include "itkNumericTraitsStdVector.h"
#include "itkSize.h"
#include <vector>
 
namespace itk
{
namespace Statistics
{
class MeasurementVectorTraits
{
public:
  using InstanceIdentifier = IdentifierType;
 
  using AbsoluteFrequencyType = InstanceIdentifier;
  using RelativeFrequencyType = NumericTraits<AbsoluteFrequencyType>::RealType;
  using TotalAbsoluteFrequencyType = NumericTraits<AbsoluteFrequencyType>::AccumulateType;
  using TotalRelativeFrequencyType = NumericTraits<RelativeFrequencyType>::AccumulateType;
 
  using MeasurementVectorLength = size_t;
 
  template <typename TVectorType>
  static bool
  IsResizable(const TVectorType &)
  {
    // Test whether the vector type is resizable or not
    //
    // If the default constructor creates a vector of
    // length zero, we assume that it is resizable,
    // otherwise that is a pretty useless measurement vector.
    const MeasurementVectorLength len = NumericTraits<TVectorType>::GetLength({});
 
    return (len == 0);
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2, unsigned int VLength2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> &,
         const FixedArray<TValue2, VLength2> &,
         const char * errMsg = "Length Mismatch")
  {
    if (VLength != VLength2)
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2, unsigned int VLength2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> *,
         const FixedArray<TValue2, VLength2> *,
         const char * errMsg = "Length Mismatch")
  {
    if (VLength != VLength2)
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, typename TValue2>
  static MeasurementVectorLength
  Assert(const Array<TValue1> & a, const Array<TValue2> & b, const char * errMsg = "Length Mismatch")
  {
    if (b.Size() != a.Size())
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, typename TValue2>
  static MeasurementVectorLength
  Assert(const Array<TValue1> * a, const Array<TValue2> * b, const char * errMsg = "Length Mismatch")
  {
    if (b->Size() != a->Size())
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, typename TValue2>
  static MeasurementVectorLength
  Assert(const VariableLengthVector<TValue1> & a,
         const VariableLengthVector<TValue2> & b,
         const char *                          errMsg = "Length Mismatch")
  {
    if (b.Size() != a.Size())
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, typename TValue2>
  static MeasurementVectorLength
  Assert(const VariableLengthVector<TValue1> * a,
         const VariableLengthVector<TValue2> * b,
         const char *                          errMsg = "Length Mismatch")
  {
    if (b->Size() != a->Size())
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, typename TValue2>
  static MeasurementVectorLength
  Assert(const std::vector<TValue1> & a, const std::vector<TValue2> & b, const char * errMsg = "Length Mismatch")
  {
    if (b.size() != a.size())
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, typename TValue2>
  static MeasurementVectorLength
  Assert(const std::vector<TValue1> * a, const std::vector<TValue2> * b, const char * errMsg = "Length Mismatch")
  {
    if (b->size() != a->size())
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> &, const Array<TValue2> & b, const char * errMsg = "Length Mismatch")
  {
    if (b.Size() == 0)
    {
      return VLength;
    }
    if (b.Size() != 0)
    {
      if (b.Size() != VLength)
      {
        itkGenericExceptionMacro(<< errMsg);
      }
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> *, const Array<TValue2> * b, const char * errMsg = "Length Mismatch")
  {
    if (b->Size() == 0)
    {
      return VLength;
    }
    else if (b->Size() != VLength)
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> &,
         const VariableLengthVector<TValue2> & b,
         const char *                          errMsg = "Length Mismatch")
  {
    if (b.Size() == 0)
    {
      return VLength;
    }
    if (b.Size() != 0)
    {
      if (b.Size() != VLength)
      {
        itkGenericExceptionMacro(<< errMsg);
      }
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> *,
         const VariableLengthVector<TValue2> * b,
         const char *                          errMsg = "Length Mismatch")
  {
    if (b->Size() == 0)
    {
      return VLength;
    }
    else if (b->Size() != VLength)
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> &, const std::vector<TValue2> & b, const char * errMsg = "Length Mismatch")
  {
    if (b.empty())
    {
      return VLength;
    }
    if (!b.empty())
    {
      if (b.size() != VLength)
      {
        itkGenericExceptionMacro(<< errMsg);
      }
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength, typename TValue2>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> *, const std::vector<TValue2> * b, const char * errMsg = "Length Mismatch")
  {
    if (b->size() == 0)
    {
      return VLength;
    }
    else if (b->size() != VLength)
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> &, const MeasurementVectorLength l, const char * errMsg = "Length Mismatch")
  {
    if (l == 0)
    {
      return VLength;
    }
    else if (l != VLength)
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue1, unsigned int VLength>
  static MeasurementVectorLength
  Assert(const FixedArray<TValue1, VLength> *, const MeasurementVectorLength l, const char * errMsg = "Length Mismatch")
  {
    if (l == 0)
    {
      return VLength;
    }
    else if (l != VLength)
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    return 0;
  }
 
  template <typename TValue>
  static MeasurementVectorLength
  Assert(const Array<TValue> & a, const MeasurementVectorLength l, const char * errMsg = "Length Mismatch")
  {
    if (((l != 0) && (a.Size() != l)) || (a.Size() == 0))
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    else if (l == 0)
    {
      return a.Size();
    }
    return 0;
  }
 
  template <typename TValue>
  static MeasurementVectorLength
  Assert(const Array<TValue> * a, const MeasurementVectorLength l, const char * errMsg = "Length Mismatch")
  {
    if (((l != 0) && (a->Size() != l)) || (a->Size() == 0))
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    else if (l == 0)
    {
      return a->Size();
    }
    return 0;
  }
 
  template <typename TValue>
  static MeasurementVectorLength
  Assert(const VariableLengthVector<TValue> & a,
         const MeasurementVectorLength        l,
         const char *                         errMsg = "Length Mismatch")
  {
    if (((l != 0) && (a.Size() != l)) || (a.Size() == 0))
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    else if (l == 0)
    {
      return a.Size();
    }
    return 0;
  }
 
  template <typename TValue>
  static MeasurementVectorLength
  Assert(const VariableLengthVector<TValue> * a,
         const MeasurementVectorLength        l,
         const char *                         errMsg = "Length Mismatch")
  {
    if (((l != 0) && (a->Size() != l)) || (a->Size() == 0))
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    else if (l == 0)
    {
      return a->Size();
    }
    return 0;
  }
 
  template <typename TValue>
  static MeasurementVectorLength
  Assert(const std::vector<TValue> & a, const MeasurementVectorLength l, const char * errMsg = "Length Mismatch")
  {
    if (((l != 0) && (a.size() != l)) || (a.empty()))
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    else if (l == 0)
    {
      return static_cast<MeasurementVectorLength>(a.size());
    }
    return 0;
  }
 
  template <typename TValue>
  static MeasurementVectorLength
  Assert(const std::vector<TValue> * a, const MeasurementVectorLength l, const char * errMsg = "Length Mismatch")
  {
    if (((l != 0) && (a->size() != l)) || (a->size() == 0))
    {
      itkGenericExceptionMacro(<< errMsg);
    }
    else if (l == 0)
    {
      return a->size();
    }
    return 0;
  }
 
  template <typename TArrayType>
  static void
  Assign(TArrayType & m, const TArrayType & v)
  {
    m = v;
  }
 
  template <typename TValue, unsigned int VLength>
  static void
  Assign(FixedArray<TValue, VLength> & m, const TValue & v)
  {
    m[0] = v;
  }
};
 
template <typename TMeasurementVector>
class MeasurementVectorTraitsTypes
{
public:
  using ValueType = typename TMeasurementVector::ValueType;
};
 
template <typename T>
class MeasurementVectorTraitsTypes<std::vector<T>>
{
public:
  using ValueType = T;
};
 
template <typename TPixelType>
class MeasurementVectorPixelTraits
{
public:
  /* type of the vector that matches this pixel type */
  using MeasurementVectorType = TPixelType;
};
 
 
template <>
class MeasurementVectorPixelTraits<char>
{
public:
  using MeasurementVectorType = FixedArray<char, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<unsigned char>
{
public:
  using MeasurementVectorType = FixedArray<unsigned char, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<signed char>
{
public:
  using MeasurementVectorType = FixedArray<signed char, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<unsigned short>
{
public:
  using MeasurementVectorType = FixedArray<unsigned short, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<short>
{
public:
  using MeasurementVectorType = FixedArray<short, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<unsigned int>
{
public:
  using MeasurementVectorType = FixedArray<unsigned int, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<int>
{
public:
  using MeasurementVectorType = FixedArray<int, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<unsigned long>
{
public:
  using MeasurementVectorType = FixedArray<unsigned long, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<long>
{
public:
  using MeasurementVectorType = FixedArray<long, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<unsigned long long>
{
public:
  using MeasurementVectorType = FixedArray<unsigned long long, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<long long>
{
public:
  using MeasurementVectorType = FixedArray<long long, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<float>
{
public:
  using MeasurementVectorType = FixedArray<float, 1>;
};
 
template <>
class MeasurementVectorPixelTraits<double>
{
public:
  using MeasurementVectorType = FixedArray<double, 1>;
};
 
 
} // namespace Statistics
} // namespace itk
 
#endif // itkMeasurementVectorTraits_h